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zlog @ 5de0ce76

-Subproject commit 5de0ce7607ae70a8a654f6fb050a5d25d96a6728

zlog/src/LICENSE

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zlog/src/README.md

+# zlog
+
+zlog is a reliable, high-performance, thread safe, flexible, clear-model, pure C logging library.
+
+Actually, in the C world there was NO good logging library for applications like logback in java or log4cxx in c++.
+Using printf can work, but can not be redirected or reformatted easily. syslog is slow and is designed for system use.
+So I wrote zlog.
+It is faster, safer and more powerful than log4c. So it can be widely used.
+
+## 1. Install
+
+Downloads: <https://github.com/HardySimpson/zlog/releases>
+
+```bash
+tar -zxvf zlog-latest-stable.tar.gz
+cd zlog-latest-stable/
+make 
+sudo make install
+```
+
+Or
+
+```bash
+make PREFIX=/usr/local/
+sudo make PREFIX=/usr/local/ install
+```
+
+PREFIX indicates the installation destination for zlog. After installation, refresh your dynamic linker to make sure
+your program can find zlog library.
+
+```bash
+$ sudo vi /etc/ld.so.conf
+/usr/local/lib
+$ sudo ldconfig
+```
+
+Before running a real program, make sure libzlog.so is in the directory where the system's dynamic lib loader can find
+it. The command metioned above are for linux. Other systems will need a similar set of actions.
+
+## 2. Configuration file
+
+There are 3 important concepts in zlog: categories, formats and rules.
+
+Categories specify different kinds of log entries. In the zlog source code, category is a `zlog_category_t *` variable.
+In your program, different categories for the log entries will distinguish them from each other.
+
+Formats describe log patterns, such as: with or without time stamp, source file, source line.
+
+Rules consist of category, level, output file (or other channel) and format. In brief, if the category string in a rule
+in the configuration file equals the name of a category variable in the source, then they match. Still there is complex
+match range of category. Rule decouples variable conditions. For example, log4j must specify a level for each logger(or
+inherit from father logger). That's not convenient when each grade of logger has its own level for output(child logger
+output at the level of debug, when father logger output at the level of error)
+
+Now create a configuration file. The function zlog_init takes the files path as its only argument.
+
+```bash
+$ cat /etc/zlog.conf
+
+[formats]
+simple = "%m%n"
+[rules]
+my_cat.DEBUG    >stdout; simple
+```
+
+In the configuration file log messages in the category `my_cat` and a level of DEBUG or higher are output to standard
+output, with the format of simple `%m - usermessage %n - newline`. If you want to direct out to a file and limit the
+files maximum size, use this configuration
+
+```config
+my_cat.DEBUG            "/var/log/aa.log", 1M; simple
+```
+
+## 3. Using zlog API in C source file
+
+### 3.1 Sample code
+
+```bash
+$ vi test_hello.c
+
+#include <stdio.h> 
+
+#include "zlog.h"
+
+int main(int argc, char** argv)
+{
+    int rc;
+    zlog_category_t *c;
+
+    rc = zlog_init("/etc/zlog.conf");
+    if (rc) {
+    printf("init failed\n");
+    return -1;
+    }
+
+    c = zlog_get_category("my_cat");
+    if (!c) {
+    printf("get cat fail\n");
+    zlog_fini();
+    return -2;
+    }
+
+    zlog_info(c, "hello, zlog");
+
+    zlog_fini();
+
+    return 0;
+}
+```
+
+### 3.2 Compile, and run it
+
+```bash
+$ cc -c -o test_hello.o test_hello.c -I/usr/local/include
+$ cc -o test_hello test_hello.o -L/usr/local/lib -lzlog -lpthread
+$ ./test_hello
+hello, zlog
+```
+
+## 4. Advanced Usage
+
+* syslog model, better than log4j model
+* log format customization
+* multiple output destinations including static file path, dynamic file path, stdout, stderr, syslog, user-defined
+  output
+* runtime manually or automatically refresh configure(safely)
+* high-performance, 250'000 logs/second on my laptop, about 1000 times faster than syslog(3) with rsyslogd
+* user-defined log level
+* thread-safe and process-safe log file rotation
+* microsecond accuracy
+* dzlog, a default category log API for easy use
+* MDC, a log4j style key-value map
+* self debuggable, can output zlog's self debug&error log at runtime
+* No external dependencies, just based on a POSIX system and a C99 compliant vsnprintf.
+
+## 5. Reference
+
+* Homepage: <http://hardysimpson.github.io/zlog>
+* Downloads: <https://github.com/HardySimpson/zlog/releases>
+* Author's Email: <HardySimpson1984@gmail.com>
+* Auto tools version: <https://github.com/bmanojlovic/zlog>
+* CMake verion: <https://github.com/lisongmin/zlog>
+* Windows version: <https://github.com/lopsd07/WinZlog>

zlog/src/buf.c

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <pthread.h>
+#include <errno.h>
+#include <stdint.h>
+
+#include "zc_defs.h"
+#include "buf.h"
+/*******************************************************************************/
+/* Author's Note
+ * This buf.c is base on C99, that is, if buffer size is not enough,
+ * the return value of vsnprintf(3) is a number tell how many character should
+ * be output.  vsnprintf in glibc 2.1 conforms to C99 , but glibc 2.0 doesn't.
+ * see manpage of vsnprintf(3) on you platform for more detail.
+
+ * So, what should you do if you want to using zlog on the platform that doesn't
+ * conform C99? My Answer is, crack zlog with a portable C99-vsnprintf, like this
+ * http://sourceforge.net/projects/ctrio/
+ * http://www.jhweiss.de/software/snprintf.html
+ * If you can see this note, you can fix it yourself? Aren't you? ^_^
+
+ * Oh, I put the snprintf in C99 standard here,
+ * vsnprintf is the same on return value.
+
+       7.19.6.5  The snprintf function
+
+       Synopsis
+
+       [#1]
+
+               #include <stdio.h>
+               int snprintf(char * restrict s, size_t n,
+                       const char * restrict format, ...);
+
+       Description
+
+       [#2]  The snprintf function is equivalent to fprintf, except
+       that the output is  written  into  an  array  (specified  by
+       argument  s) rather than to a stream.  If n is zero, nothing
+       is written, and s may be a null pointer.  Otherwise,  output
+       characters  beyond the n-1st are discarded rather than being
+       written to the array, and a null character is written at the
+       end  of  the characters actually written into the array.  If
+       copying  takes  place  between  objects  that  overlap,  the
+       behavior is undefined.
+
+       Returns
+
+       [#3]  The snprintf function returns the number of characters
+       that would have been written had n been sufficiently  large,
+       not  counting  the terminating null character, or a negative
+       value if  an  encoding  error  occurred.   Thus,  the  null-
+       terminated output has been completely written if and only if
+       the returned value is nonnegative and less than n.
+ */
+
+/*******************************************************************************/
+void zlog_buf_profile(zlog_buf_t * a_buf, int flag)
+{
+	//zc_assert(a_buf,);
+	zc_profile(flag, "---buf[%p][%ld-%ld][%ld][%s][%p:%ld]---",
+			a_buf,
+			a_buf->size_min, a_buf->size_max,
+			a_buf->size_real,
+			a_buf->truncate_str,
+			a_buf->start, a_buf->tail - a_buf->start);
+	return;
+}
+/*******************************************************************************/
+void zlog_buf_del(zlog_buf_t * a_buf)
+{
+	//zc_assert(a_buf,);
+	if (a_buf->start) free(a_buf->start);
+	zc_debug("zlog_buf_del[%p]", a_buf);
+    free(a_buf);
+	return;
+}
+
+zlog_buf_t *zlog_buf_new(size_t buf_size_min, size_t buf_size_max, const char *truncate_str)
+{
+	zlog_buf_t *a_buf;
+
+	if (buf_size_min == 0) {
+		zc_error("buf_size_min == 0, not allowed");
+		return NULL;
+	}
+
+	if (buf_size_max != 0 && buf_size_max < buf_size_min) {
+		zc_error("buf_size_max[%lu] < buf_size_min[%lu] && buf_size_max != 0",
+			 (unsigned long)buf_size_max, (unsigned long)buf_size_min);
+		return NULL;
+	}
+
+	a_buf = calloc(1, sizeof(*a_buf));
+	if (!a_buf) {
+		zc_error("calloc fail, errno[%d]", errno);
+		return NULL;
+	}
+
+	if (truncate_str) {
+		if (strlen(truncate_str) > sizeof(a_buf->truncate_str) - 1) {
+			zc_error("truncate_str[%s] overflow", truncate_str);
+			goto err;
+		} else {
+			strcpy(a_buf->truncate_str, truncate_str);
+		}
+		a_buf->truncate_str_len = strlen(truncate_str);
+	}
+
+	a_buf->size_min = buf_size_min;
+	a_buf->size_max = buf_size_max;
+	a_buf->size_real = a_buf->size_min;
+
+	a_buf->start = calloc(1, a_buf->size_real);
+	if (!a_buf->start) {
+		zc_error("calloc fail, errno[%d]", errno);
+		goto err;
+	}
+
+	a_buf->tail = a_buf->start;
+	a_buf->end_plus_1 = a_buf->start + a_buf->size_real;
+	a_buf->end = a_buf->end_plus_1 - 1;
+
+	//zlog_buf_profile(a_buf, ZC_DEBUG);
+	return a_buf;
+
+err:
+	zlog_buf_del(a_buf);
+	return NULL;
+}
+
+/*******************************************************************************/
+static void zlog_buf_truncate(zlog_buf_t * a_buf)
+{
+	char *p;
+	size_t len;
+
+	if ((a_buf->truncate_str)[0] == '\0') return;
+	p = (a_buf->tail - a_buf->truncate_str_len);
+	if (p < a_buf->start) p = a_buf->start;
+	len = a_buf->tail - p;
+	memcpy(p, a_buf->truncate_str, len);
+	return;
+}
+
+/*******************************************************************************/
+/* return 0:	success
+ * return <0:	fail, set size_real to -1;
+ * return >0:	by conf limit, can't extend size
+ * increment must > 0
+ */
+static int zlog_buf_resize(zlog_buf_t * a_buf, size_t increment)
+{
+	int rc = 0;
+	size_t new_size = 0;
+	size_t len = 0;
+	char *p = NULL;
+
+	if (a_buf->size_max != 0 && a_buf->size_real >= a_buf->size_max) {
+		zc_error("a_buf->size_real[%ld] >= a_buf->size_max[%ld]",
+			 a_buf->size_real, a_buf->size_max);
+		return 1;
+	}
+
+	if (a_buf->size_max == 0) {
+		/* unlimit */
+		new_size = a_buf->size_real + 1.5 * increment;
+	} else {
+		/* limited  */
+		if (a_buf->size_real + increment <= a_buf->size_max) {
+			new_size = a_buf->size_real + increment;
+		} else {
+			new_size = a_buf->size_max;
+			rc = 1;
+		}
+	}
+
+	len = a_buf->tail - a_buf->start;
+	p = realloc(a_buf->start, new_size);
+	if (!p) {
+		zc_error("realloc fail, errno[%d]", errno);
+		free(a_buf->start);
+		a_buf->start = NULL;
+		a_buf->tail = NULL;
+		a_buf->end = NULL;
+		a_buf->end_plus_1 = NULL;
+		return -1;
+	} else {
+		a_buf->start = p;
+		a_buf->tail = p + len;
+		a_buf->size_real = new_size;
+		a_buf->end_plus_1 = a_buf->start + new_size;
+		a_buf->end = a_buf->end_plus_1 - 1;
+	}
+
+	return rc;
+}
+
+int zlog_buf_vprintf(zlog_buf_t * a_buf, const char *format, va_list args)
+{
+	va_list ap;
+	size_t size_left;
+	int nwrite;
+
+	if (!a_buf->start) {
+		zc_error("pre-use of zlog_buf_resize fail, so can't convert");
+		return -1;
+	}
+
+	va_copy(ap, args);
+	size_left = a_buf->end_plus_1 - a_buf->tail;
+	nwrite = vsnprintf(a_buf->tail, size_left, format, ap);
+	if (nwrite >= 0 && nwrite < size_left) {
+		a_buf->tail += nwrite;
+		//*(a_buf->tail) = '\0';
+		return 0;
+	} else if (nwrite < 0) {
+		zc_error("vsnprintf fail, errno[%d]", errno);
+		zc_error("nwrite[%d], size_left[%ld], format[%s]", nwrite, size_left, format);
+		return -1;
+	} else if (nwrite >= size_left) {
+		int rc;
+		//zc_debug("nwrite[%d]>=size_left[%ld],format[%s],resize", nwrite, size_left, format);
+		rc = zlog_buf_resize(a_buf, nwrite - size_left + 1);
+		if (rc > 0) {
+			zc_error("conf limit to %ld, can't extend, so truncate", a_buf->size_max);
+			va_copy(ap, args);
+			size_left = a_buf->end_plus_1 - a_buf->tail;
+			vsnprintf(a_buf->tail, size_left, format, ap);
+			a_buf->tail += size_left - 1;
+			//*(a_buf->tail) = '\0';
+			zlog_buf_truncate(a_buf);
+			return 1;
+		} else if (rc < 0) {
+			zc_error("zlog_buf_resize fail");
+			return -1;
+		} else {
+			//zc_debug("zlog_buf_resize succ, to[%ld]", a_buf->size_real);
+
+			va_copy(ap, args);
+			size_left = a_buf->end_plus_1 - a_buf->tail;
+			nwrite = vsnprintf(a_buf->tail, size_left, format, ap);
+			if (nwrite < 0) {
+				zc_error("vsnprintf fail, errno[%d]", errno);
+				zc_error("nwrite[%d], size_left[%ld], format[%s]", nwrite, size_left, format);
+				return -1;
+			} else {
+				a_buf->tail += nwrite;
+				//*(a_buf->tail) = '\0';
+				return 0;
+			}
+		}
+	}
+
+	return 0;
+}
+
+/*******************************************************************************/
+/* if width > num_len, 0 padding, else output num */
+int zlog_buf_printf_dec32(zlog_buf_t * a_buf, uint32_t ui32, int width)
+{
+	unsigned char *p;
+	char *q;
+	unsigned char tmp[ZLOG_INT32_LEN + 1];
+	size_t num_len, zero_len, out_len;
+
+	if (!a_buf->start) {
+		zc_error("pre-use of zlog_buf_resize fail, so can't convert");
+		return -1;
+	}
+
+	p = tmp + ZLOG_INT32_LEN;
+	do {
+		*--p = (unsigned char) (ui32 % 10 + '0');
+	} while (ui32 /= 10);
+
+	/* zero or space padding */
+	num_len = (tmp + ZLOG_INT32_LEN) - p;
+
+	if (width > num_len) {
+		zero_len = width - num_len;
+		out_len = width;
+	} else {
+		zero_len = 0;
+		out_len = num_len;
+	}
+
+	if ((q = a_buf->tail + out_len) > a_buf->end) {
+		int rc;
+		//zc_debug("size_left not enough, resize");
+		rc = zlog_buf_resize(a_buf, out_len - (a_buf->end - a_buf->tail));
+		if (rc > 0) {
+			size_t len_left;
+			zc_error("conf limit to %ld, can't extend, so output", a_buf->size_max);
+			len_left = a_buf->end - a_buf->tail;
+			if (len_left <= zero_len) {
+				zero_len = len_left;
+				num_len = 0;
+			} else if (len_left > zero_len) {
+				/* zero_len not changed */
+				num_len = len_left - zero_len;
+			}
+			if (zero_len) memset(a_buf->tail, '0', zero_len);
+			memcpy(a_buf->tail + zero_len, p, num_len);
+			a_buf->tail += len_left;
+			//*(a_buf->tail) = '\0';
+			zlog_buf_truncate(a_buf);
+			return 1;
+		} else if (rc < 0) {
+			zc_error("zlog_buf_resize fail");
+			return -1;
+		} else {
+			//zc_debug("zlog_buf_resize succ, to[%ld]", a_buf->size_real);
+			q = a_buf->tail + out_len; /* re-calculate p*/
+		}
+	}
+
+	if (zero_len) memset(a_buf->tail, '0', zero_len);
+	memcpy(a_buf->tail + zero_len, p, num_len);
+	a_buf->tail = q;
+	//*(a_buf->tail) = '\0';
+	return 0;
+}
+/*******************************************************************************/
+int zlog_buf_printf_dec64(zlog_buf_t * a_buf, uint64_t ui64, int width)
+{
+	unsigned char *p;
+	char *q;
+	unsigned char tmp[ZLOG_INT64_LEN + 1];
+	size_t num_len, zero_len, out_len;
+	uint32_t ui32;
+
+	if (!a_buf->start) {
+		zc_error("pre-use of zlog_buf_resize fail, so can't convert");
+		return -1;
+	}
+
+	p = tmp + ZLOG_INT64_LEN;
+	if (ui64 <= ZLOG_MAX_UINT32_VALUE) {
+		/*
+		* To divide 64-bit numbers and to find remainders
+		* on the x86 platform gcc and icc call the libc functions
+		* [u]divdi3() and [u]moddi3(), they call another function
+		* in its turn.  On FreeBSD it is the qdivrem() function,
+		* its source code is about 170 lines of the code.
+		* The glibc counterpart is about 150 lines of the code.
+		*
+		* For 32-bit numbers and some divisors gcc and icc use
+		* a inlined multiplication and shifts.  For example,
+		* unsigned "i32 / 10" is compiled to
+		*
+		*     (i32 * 0xCCCCCCCD) >> 35
+		*/
+
+		ui32 = (uint32_t) ui64;
+
+		do {
+			*--p = (unsigned char) (ui32 % 10 + '0');
+		} while (ui32 /= 10);
+
+	} else {
+		do {
+			*--p = (unsigned char) (ui64 % 10 + '0');
+		} while (ui64 /= 10);
+	}
+
+
+	/* zero or space padding */
+	num_len = (tmp + ZLOG_INT64_LEN) - p;
+
+	if (width > num_len) {
+		zero_len = width - num_len;
+		out_len = width;
+	} else {
+		zero_len = 0;
+		out_len = num_len;
+	}
+
+	if ((q = a_buf->tail + out_len) > a_buf->end) {
+		int rc;
+		//zc_debug("size_left not enough, resize");
+		rc = zlog_buf_resize(a_buf, out_len - (a_buf->end - a_buf->tail));
+		if (rc > 0) {
+			size_t len_left;
+			zc_error("conf limit to %ld, can't extend, so output", a_buf->size_max);
+			len_left = a_buf->end - a_buf->tail;
+			if (len_left <= zero_len) {
+				zero_len = len_left;
+				num_len = 0;
+			} else if (len_left > zero_len) {
+				/* zero_len not changed */
+				num_len = len_left - zero_len;
+			}
+			if (zero_len) memset(a_buf->tail, '0', zero_len);
+			memcpy(a_buf->tail + zero_len, p, num_len);
+			a_buf->tail += len_left;
+			//*(a_buf->tail) = '\0';
+			zlog_buf_truncate(a_buf);
+			return 1;
+		} else if (rc < 0) {
+			zc_error("zlog_buf_resize fail");
+			return -1;
+		} else {
+			//zc_debug("zlog_buf_resize succ, to[%ld]", a_buf->size_real);
+			q = a_buf->tail + out_len; /* re-calculate p*/
+		}
+	}
+
+	if (zero_len) memset(a_buf->tail, '0', zero_len);
+	memcpy(a_buf->tail + zero_len, p, num_len);
+	a_buf->tail = q;
+	//*(a_buf->tail) = '\0';
+	return 0;
+}
+/*******************************************************************************/
+int zlog_buf_printf_hex(zlog_buf_t * a_buf, uint32_t ui32, int width)
+{
+	unsigned char *p;
+	char *q;
+	unsigned char tmp[ZLOG_INT32_LEN + 1];
+	size_t num_len, zero_len, out_len;
+	static unsigned char   hex[] = "0123456789abcdef";
+	//static unsigned char   HEX[] = "0123456789ABCDEF";
+
+	if (!a_buf->start) {
+		zc_error("pre-use of zlog_buf_resize fail, so can't convert");
+		return -1;
+	}
+
+
+	p = tmp + ZLOG_INT32_LEN;
+	do {
+		/* the "(uint32_t)" cast disables the BCC's warning */
+		*--p = hex[(uint32_t) (ui32 & 0xf)];
+	} while (ui32 >>= 4);
+
+#if 0
+	} else { /* is_hex == 2 */
+
+		do {
+			/* the "(uint32_t)" cast disables the BCC's warning */
+			*--p = HEX[(uint32_t) (ui64 & 0xf)];
+
+		} while (ui64 >>= 4);
+	}
+#endif
+
+	/* zero or space padding */
+	num_len = (tmp + ZLOG_INT32_LEN) - p;
+
+	if (width > num_len) {
+		zero_len = width - num_len;
+		out_len = width;
+	} else {
+		zero_len = 0;
+		out_len = num_len;
+	}
+
+	if ((q = a_buf->tail + out_len) > a_buf->end) {
+		int rc;
+		//zc_debug("size_left not enough, resize");
+		rc = zlog_buf_resize(a_buf, out_len - (a_buf->end - a_buf->tail));
+		if (rc > 0) {
+			size_t len_left;
+			zc_error("conf limit to %ld, can't extend, so output", a_buf->size_max);
+			len_left = a_buf->end - a_buf->tail;
+			if (len_left <= zero_len) {
+				zero_len = len_left;
+				num_len = 0;
+			} else if (len_left > zero_len) {
+				/* zero_len not changed */
+				num_len = len_left - zero_len;
+			}
+			if (zero_len) memset(a_buf->tail, '0', zero_len);
+			memcpy(a_buf->tail + zero_len, p, num_len);
+			a_buf->tail += len_left;
+			//*(a_buf->tail) = '\0';
+			zlog_buf_truncate(a_buf);
+			return 1;
+		} else if (rc < 0) {
+			zc_error("zlog_buf_resize fail");
+			return -1;
+		} else {
+			//zc_debug("zlog_buf_resize succ, to[%ld]", a_buf->size_real);
+			q = a_buf->tail + out_len; /* re-calculate p*/
+		}
+	}
+
+	if (zero_len) memset(a_buf->tail, '0', zero_len);
+	memcpy(a_buf->tail + zero_len, p, num_len);
+	a_buf->tail = q;
+	//*(a_buf->tail) = '\0';
+	return 0;
+}
+
+/*******************************************************************************/
+int zlog_buf_append(zlog_buf_t * a_buf, const char *str, size_t str_len)
+{
+	char *p;
+#if 0
+	if (str_len <= 0 || str == NULL) {
+		return 0;
+	}
+	if (!a_buf->start) {
+		zc_error("pre-use of zlog_buf_resize fail, so can't convert");
+		return -1;
+	}
+#endif
+
+	if ((p = a_buf->tail + str_len) > a_buf->end) {
+		int rc;
+		//zc_debug("size_left not enough, resize");
+		rc = zlog_buf_resize(a_buf, str_len - (a_buf->end - a_buf->tail));
+		if (rc > 0) {
+			size_t len_left;
+			zc_error("conf limit to %ld, can't extend, so output",
+				 a_buf->size_max);
+			len_left = a_buf->end - a_buf->tail;
+			memcpy(a_buf->tail, str, len_left);
+			a_buf->tail += len_left;
+			//*(a_buf->tail) = '\0';
+			zlog_buf_truncate(a_buf);
+			return 1;
+		} else if (rc < 0) {
+			zc_error("zlog_buf_resize fail");
+			return -1;
+		} else {
+			//zc_debug("zlog_buf_resize succ, to[%ld]", a_buf->size_real);
+			p = a_buf->tail + str_len; /* re-calculate p*/
+		}
+	}
+
+	memcpy(a_buf->tail, str, str_len);
+	a_buf->tail = p;
+	// *(a_buf->tail) = '\0';
+	return 0;
+}
+
+/*******************************************************************************/
+int zlog_buf_adjust_append(zlog_buf_t * a_buf, const char *str, size_t str_len,
+		int left_adjust, int zero_pad, size_t in_width, size_t out_width)
+{
+	size_t append_len = 0;
+	size_t source_len = 0;
+	size_t space_len = 0;
+
+#if 0
+	if (str_len <= 0 || str == NULL) {
+		return 0;
+	}
+#endif
+
+	if (!a_buf->start) {
+		zc_error("pre-use of zlog_buf_resize fail, so can't convert");
+		return -1;
+	}
+
+	/* calculate how many character will be got from str */
+	if (out_width == 0 || str_len < out_width) {
+		source_len = str_len;
+	} else {
+		source_len = out_width;
+	}
+
+	/* calculate how many character will be output */
+	if (in_width == 0 || source_len >= in_width ) {
+		append_len = source_len;
+		space_len = 0;
+	} else {
+		append_len = in_width;
+		space_len = in_width - source_len;
+	}
+
+	/*  |-----append_len-----------| */
+	/*  |-source_len---|-space_len-|  left_adjust */
+	/*  |-space_len---|-source_len-|  right_adjust */
+	/*  |-(size_real-1)---|           size not enough */
+
+	if (append_len > a_buf->end - a_buf->tail) {
+		int rc = 0;
+		//zc_debug("size_left not enough, resize");
+		rc = zlog_buf_resize(a_buf, append_len - (a_buf->end -a_buf->tail));
+		if (rc > 0) {
+			zc_error("conf limit to %ld, can't extend, so output", a_buf->size_max);
+			append_len = (a_buf->end - a_buf->tail);
+			if (left_adjust) {
+				if (source_len < append_len) {
+					space_len = append_len - source_len;
+				} else {
+					source_len = append_len;
+					space_len = 0;
+				}
+				if (space_len) memset(a_buf->tail + source_len, ' ', space_len);
+				memcpy(a_buf->tail, str, source_len);
+			} else {
+				if (space_len < append_len) {
+					source_len = append_len - space_len;
+				} else {
+					space_len = append_len;
+					source_len = 0;
+				}
+				if (space_len) {
+					if (zero_pad) {
+						memset(a_buf->tail, '0', space_len);
+					} else {
+						memset(a_buf->tail, ' ', space_len);
+					}
+				}
+				memcpy(a_buf->tail + space_len, str, source_len);
+			}
+			a_buf->tail += append_len;
+			//*(a_buf->tail) = '\0';
+			zlog_buf_truncate(a_buf);
+			return 1;
+		} else if (rc < 0) {
+			zc_error("zlog_buf_resize fail");
+			return -1;
+		} else {
+			//zc_debug("zlog_buf_resize succ, to[%ld]", a_buf->size_real);
+		}
+	}
+
+	if (left_adjust) {
+		if (space_len) memset(a_buf->tail + source_len, ' ', space_len);
+		memcpy(a_buf->tail, str, source_len);
+	} else {
+		if (space_len) {
+			if (zero_pad) {
+				memset(a_buf->tail, '0', space_len);
+			} else {
+				memset(a_buf->tail, ' ', space_len);
+			}
+		}
+		memcpy(a_buf->tail + space_len, str, source_len);
+	}
+	a_buf->tail += append_len;
+	//*(a_buf->tail) = '\0';
+	return 0;
+}
+/*******************************************************************************/
+

zlog/src/buf.h

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __zlog_buf_h
+#define __zlog_buf_h
+
+/* buf, is a dynamic expand buffer for one single log,
+ * as one single log will interlace if use multiple write() to file.
+ * and buf is always keep in a thread, to make each thread has its
+ * own buffer to avoid lock.
+ */
+
+#include <stdarg.h>
+#include <stdint.h>
+
+typedef struct zlog_buf_s {
+	char *start;
+	char *tail;
+	char *end;
+	char *end_plus_1;
+
+	size_t size_min;
+	size_t size_max;
+	size_t size_real;
+
+	char truncate_str[MAXLEN_PATH + 1];
+	size_t truncate_str_len;
+} zlog_buf_t;
+
+
+zlog_buf_t *zlog_buf_new(size_t min, size_t max, const char *truncate_str);
+void zlog_buf_del(zlog_buf_t * a_buf);
+void zlog_buf_profile(zlog_buf_t * a_buf, int flag);
+
+int zlog_buf_vprintf(zlog_buf_t * a_buf, const char *format, va_list args);
+int zlog_buf_append(zlog_buf_t * a_buf, const char *str, size_t str_len);
+int zlog_buf_adjust_append(zlog_buf_t * a_buf, const char *str, size_t str_len,
+			int left_adjust, int zero_pad, size_t in_width, size_t out_width);
+int zlog_buf_printf_dec32(zlog_buf_t * a_buf, uint32_t ui32, int width);
+int zlog_buf_printf_dec64(zlog_buf_t * a_buf, uint64_t ui64, int width);
+int zlog_buf_printf_hex(zlog_buf_t * a_buf, uint32_t ui32, int width);
+
+#define zlog_buf_restart(a_buf) do { \
+	a_buf->tail = a_buf->start; \
+} while(0)
+
+#define zlog_buf_len(a_buf) (a_buf->tail - a_buf->start)
+#define zlog_buf_str(a_buf) (a_buf->start)
+#define zlog_buf_seal(a_buf) do {*(a_buf)->tail = '\0';} while (0)
+
+#endif

zlog/src/category.c

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "fmacros.h"
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#include "category.h"
+#include "rule.h"
+#include "zc_defs.h"
+
+void zlog_category_profile(zlog_category_t *a_category, int flag)
+{
+	int i;
+	zlog_rule_t *a_rule;
+
+	zc_assert(a_category,);
+	zc_profile(flag, "--category[%p][%s][%p]--",
+			a_category,
+			a_category->name,
+			a_category->fit_rules);
+	if (a_category->fit_rules) {
+		zc_arraylist_foreach(a_category->fit_rules, i, a_rule) {
+			zlog_rule_profile(a_rule, flag);
+		}
+	}
+	return;
+}
+
+/*******************************************************************************/
+void zlog_category_del(zlog_category_t * a_category)
+{
+	zc_assert(a_category,);
+	if (a_category->fit_rules) zc_arraylist_del(a_category->fit_rules);
+	zc_debug("zlog_category_del[%p]", a_category);
+    free(a_category);
+	return;
+}
+
+/* overlap one rule's level bitmap to cateogry,
+ * so category can judge whether a log level will be output by itself
+ * It is safe when configure is reloaded, when rule will be released an recreated
+ */
+static void zlog_cateogry_overlap_bitmap(zlog_category_t * a_category, zlog_rule_t *a_rule)
+{
+	int i;
+	for(i = 0; i < sizeof(a_rule->level_bitmap); i++) {
+		a_category->level_bitmap[i] |= a_rule->level_bitmap[i];
+	}
+}
+
+static int zlog_category_obtain_rules(zlog_category_t * a_category, zc_arraylist_t * rules)
+{
+	int i;
+	int count = 0;
+	int fit = 0;
+	zlog_rule_t *a_rule;
+	zlog_rule_t *wastebin_rule = NULL;
+
+	/* before set, clean last fit rules first */
+	if (a_category->fit_rules) zc_arraylist_del(a_category->fit_rules);
+
+	memset(a_category->level_bitmap, 0x00, sizeof(a_category->level_bitmap));
+
+	a_category->fit_rules = zc_arraylist_new(NULL);
+	if (!(a_category->fit_rules)) {
+		zc_error("zc_arraylist_new fail");
+		return -1;
+	}
+
+	/* get match rules from all rules */
+	zc_arraylist_foreach(rules, i, a_rule) {
+		fit = zlog_rule_match_category(a_rule, a_category->name);
+		if (fit) {
+			if (zc_arraylist_add(a_category->fit_rules, a_rule)) {
+				zc_error("zc_arrylist_add fail");
+				goto err;
+			}
+			zlog_cateogry_overlap_bitmap(a_category, a_rule);
+			count++;
+		}
+
+		if (zlog_rule_is_wastebin(a_rule)) {
+			wastebin_rule = a_rule;
+		}
+	}
+
+	if (count == 0) {
+		if (wastebin_rule) {
+			zc_debug("category[%s], no match rules, use wastebin_rule", a_category->name);
+			if (zc_arraylist_add(a_category->fit_rules, wastebin_rule)) {
+				zc_error("zc_arrylist_add fail");
+				goto err;
+			}
+			zlog_cateogry_overlap_bitmap(a_category, wastebin_rule);
+			count++;
+		} else {
+			zc_debug("category[%s], no match rules & no wastebin_rule", a_category->name);
+		}
+	}
+
+	return 0;
+err:
+	zc_arraylist_del(a_category->fit_rules);
+	a_category->fit_rules = NULL;
+	return -1;
+}
+
+zlog_category_t *zlog_category_new(const char *name, zc_arraylist_t * rules)
+{
+	size_t len;
+	zlog_category_t *a_category;
+
+	zc_assert(name, NULL);
+	zc_assert(rules, NULL);
+
+	len = strlen(name);
+	if (len > sizeof(a_category->name) - 1) {
+		zc_error("name[%s] too long", name);
+		return NULL;
+	}
+	a_category = calloc(1, sizeof(zlog_category_t));
+	if (!a_category) {
+		zc_error("calloc fail, errno[%d]", errno);
+		return NULL;
+	}
+	strcpy(a_category->name, name);
+	a_category->name_len = len;
+	if (zlog_category_obtain_rules(a_category, rules)) {
+		zc_error("zlog_category_fit_rules fail");
+		goto err;
+	}
+
+	zlog_category_profile(a_category, ZC_DEBUG);
+	return a_category;
+err:
+	zlog_category_del(a_category);
+	return NULL;
+}
+/*******************************************************************************/
+/* update success: fit_rules 1, fit_rules_backup 1 */
+/* update fail: fit_rules 0, fit_rules_backup 1 */
+int zlog_category_update_rules(zlog_category_t * a_category, zc_arraylist_t * new_rules)
+{
+	zc_assert(a_category, -1);
+	zc_assert(new_rules, -1);
+
+	/* 1st, mv fit_rules fit_rules_backup */
+	if (a_category->fit_rules_backup) zc_arraylist_del(a_category->fit_rules_backup);
+	a_category->fit_rules_backup = a_category->fit_rules;
+	a_category->fit_rules = NULL;
+
+	memcpy(a_category->level_bitmap_backup, a_category->level_bitmap,
+			sizeof(a_category->level_bitmap));
+	
+	/* 2nd, obtain new_rules to fit_rules */
+	if (zlog_category_obtain_rules(a_category, new_rules)) {
+		zc_error("zlog_category_obtain_rules fail");
+		a_category->fit_rules = NULL;
+		return -1;
+	}
+
+	/* keep the fit_rules_backup not change, return */
+	return 0;
+}
+
+/* commit fail: fit_rules_backup != 0 */
+/* commit success: fit_rules 1, fit_rules_backup 0 */
+void zlog_category_commit_rules(zlog_category_t * a_category)
+{
+	zc_assert(a_category,);
+	if (!a_category->fit_rules_backup) {
+		zc_warn("a_category->fit_rules_backup is NULL, never update before");
+		return;
+	}
+
+	zc_arraylist_del(a_category->fit_rules_backup);
+	a_category->fit_rules_backup = NULL;
+	memset(a_category->level_bitmap_backup, 0x00,
+			sizeof(a_category->level_bitmap_backup));
+	return;
+}
+
+/* rollback fail: fit_rules_backup != 0 */
+/* rollback success: fit_rules 1, fit_rules_backup 0 */
+/* so whether update succes or not, make things back to old */
+void zlog_category_rollback_rules(zlog_category_t * a_category)
+{
+	zc_assert(a_category,);
+	if (!a_category->fit_rules_backup) {
+		zc_warn("a_category->fit_rules_backup in NULL, never update before");
+		return;
+	}
+
+	if (a_category->fit_rules) {
+		/* update success, rm new and backup */
+		zc_arraylist_del(a_category->fit_rules);
+		a_category->fit_rules = a_category->fit_rules_backup;
+		a_category->fit_rules_backup = NULL;
+	} else {
+		/* update fail, just backup */
+		a_category->fit_rules = a_category->fit_rules_backup;
+		a_category->fit_rules_backup = NULL;
+	}
+
+	memcpy(a_category->level_bitmap, a_category->level_bitmap_backup,
+			sizeof(a_category->level_bitmap));
+	memset(a_category->level_bitmap_backup, 0x00,
+			sizeof(a_category->level_bitmap_backup));
+	
+	return; /* always success */
+}
+
+/*******************************************************************************/
+
+int zlog_category_output(zlog_category_t * a_category, zlog_thread_t * a_thread)
+{
+	int i;
+	int rc = 0;
+	zlog_rule_t *a_rule;
+
+	/* go through all match rules to output */
+	zc_arraylist_foreach(a_category->fit_rules, i, a_rule) {
+		rc = zlog_rule_output(a_rule, a_thread);
+	}
+
+	return rc;
+}

zlog/src/category.h

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __zlog_category_h
+#define __zlog_category_h
+
+#include "zc_defs.h"
+#include "thread.h"
+
+typedef struct zlog_category_s {
+	char name[MAXLEN_PATH + 1];
+	size_t name_len;
+	unsigned char level_bitmap[32];
+	unsigned char level_bitmap_backup[32];
+	zc_arraylist_t *fit_rules;
+	zc_arraylist_t *fit_rules_backup;
+} zlog_category_t;
+
+zlog_category_t *zlog_category_new(const char *name, zc_arraylist_t * rules);
+void zlog_category_del(zlog_category_t * a_category);
+void zlog_category_profile(zlog_category_t *a_category, int flag);
+
+int zlog_category_update_rules(zlog_category_t * a_category, zc_arraylist_t * new_rules);
+void zlog_category_commit_rules(zlog_category_t * a_category);
+void zlog_category_rollback_rules(zlog_category_t * a_category);
+
+int zlog_category_output(zlog_category_t * a_category, zlog_thread_t * a_thread);
+
+#define zlog_category_needless_level(a_category, lv) \
+        a_category && (zlog_env_conf->level > lv || !((a_category->level_bitmap[lv/8] >> (7 - lv % 8)) & 0x01))
+
+#endif

zlog/src/category_table.c

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#include "zc_defs.h"
+#include "category_table.h"
+
+void zlog_category_table_profile(zc_hashtable_t * categories, int flag)
+{
+	zc_hashtable_entry_t *a_entry;
+	zlog_category_t *a_category;
+
+	zc_assert(categories,);
+	zc_profile(flag, "-category_table[%p]-", categories);
+	zc_hashtable_foreach(categories, a_entry) {
+		a_category = (zlog_category_t *) a_entry->value;
+		zlog_category_profile(a_category, flag);
+	}
+	return;
+}
+
+/*******************************************************************************/
+
+void zlog_category_table_del(zc_hashtable_t * categories)
+{
+	zc_assert(categories,);
+	zc_hashtable_del(categories);
+	zc_debug("zlog_category_table_del[%p]", categories);
+	return;
+}
+
+zc_hashtable_t *zlog_category_table_new(void)
+{
+	zc_hashtable_t *categories;
+
+	categories = zc_hashtable_new(20,
+			 (zc_hashtable_hash_fn) zc_hashtable_str_hash,
+			 (zc_hashtable_equal_fn) zc_hashtable_str_equal,
+			 NULL, (zc_hashtable_del_fn) zlog_category_del);
+	if (!categories) {
+		zc_error("zc_hashtable_new fail");
+		return NULL;
+	} else {
+		zlog_category_table_profile(categories, ZC_DEBUG);
+		return categories;
+	}
+}
+/*******************************************************************************/
+int zlog_category_table_update_rules(zc_hashtable_t * categories, zc_arraylist_t * new_rules)
+{
+	zc_hashtable_entry_t *a_entry;
+	zlog_category_t *a_category;
+
+	zc_assert(categories, -1);
+	zc_hashtable_foreach(categories, a_entry) {
+		a_category = (zlog_category_t *) a_entry->value;
+		if (zlog_category_update_rules(a_category, new_rules)) {
+			zc_error("zlog_category_update_rules fail, try rollback");
+			return -1;
+		}
+	}
+	return 0;
+}
+
+void zlog_category_table_commit_rules(zc_hashtable_t * categories)
+{
+	zc_hashtable_entry_t *a_entry;
+	zlog_category_t *a_category;
+
+	zc_assert(categories,);
+	zc_hashtable_foreach(categories, a_entry) {
+		a_category = (zlog_category_t *) a_entry->value;
+		zlog_category_commit_rules(a_category);
+	}
+	return;
+}
+
+void zlog_category_table_rollback_rules(zc_hashtable_t * categories)
+{
+	zc_hashtable_entry_t *a_entry;
+	zlog_category_t *a_category;
+
+	zc_assert(categories,);
+	zc_hashtable_foreach(categories, a_entry) {
+		a_category = (zlog_category_t *) a_entry->value;
+		zlog_category_rollback_rules(a_category);
+	}
+	return;
+}
+
+/*******************************************************************************/
+zlog_category_t *zlog_category_table_fetch_category(zc_hashtable_t * categories,
+			const char *category_name, zc_arraylist_t * rules)
+{
+	zlog_category_t *a_category;
+
+	zc_assert(categories, NULL);
+
+	/* 1st find category in global category map */
+	a_category = zc_hashtable_get(categories, category_name);
+	if (a_category) return a_category;
+
+	/* else not found, create one */
+	a_category = zlog_category_new(category_name, rules);
+	if (!a_category) {
+		zc_error("zc_category_new fail");
+		return NULL;
+	}
+
+	if(zc_hashtable_put(categories, a_category->name, a_category)) {
+		zc_error("zc_hashtable_put fail");
+		goto err;
+	}
+
+	return a_category;
+err:
+	zlog_category_del(a_category);
+	return NULL;
+}
+
+/*******************************************************************************/

zlog/src/category_table.h

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __zlog_category_table_h
+#define __zlog_category_table_h
+
+#include "zc_defs.h"
+#include "category.h"
+
+zc_hashtable_t *zlog_category_table_new(void);
+void zlog_category_table_del(zc_hashtable_t * categories);
+void zlog_category_table_profile(zc_hashtable_t * categories, int flag);
+
+/* if none, create new and return */
+zlog_category_t *zlog_category_table_fetch_category(
+			zc_hashtable_t * categories,
+		 	const char *category_name, zc_arraylist_t * rules);
+
+int zlog_category_table_update_rules(zc_hashtable_t * categories, zc_arraylist_t * new_rules);
+void zlog_category_table_commit_rules(zc_hashtable_t * categories);
+void zlog_category_table_rollback_rules(zc_hashtable_t * categories);
+
+#endif

zlog/src/conf.c

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "fmacros.h"
+#include <ctype.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#ifndef _WIN32
+#include <unistd.h>
+#else
+#include "zlog_win.h"
+#endif
+
+#include <time.h>
+
+#include "conf.h"
+#include "rule.h"
+#include "format.h"
+#include "level_list.h"
+#include "rotater.h"
+#include "zc_defs.h"
+
+#ifdef _WIN32
+#define STATS_FILE stat
+#else
+#define STATS_FILE lstat
+#endif
+
+/*******************************************************************************/
+#define ZLOG_CONF_DEFAULT_FORMAT "default = \"%D %V [%p:%F:%L] %m%n\""
+#define ZLOG_CONF_DEFAULT_RULE "*.*        >stdout"
+#define ZLOG_CONF_DEFAULT_BUF_SIZE_MIN 1024
+#define ZLOG_CONF_DEFAULT_BUF_SIZE_MAX (2 * 1024 * 1024)
+#define ZLOG_CONF_DEFAULT_FILE_PERMS 0600
+#define ZLOG_CONF_DEFAULT_RELOAD_CONF_PERIOD 0
+#define ZLOG_CONF_DEFAULT_FSYNC_PERIOD 0
+#define ZLOG_CONF_BACKUP_ROTATE_LOCK_FILE "/tmp/zlog.lock"
+/*******************************************************************************/
+
+void zlog_conf_profile(zlog_conf_t * a_conf, int flag)
+{
+	int i;
+	zlog_rule_t *a_rule;
+	zlog_format_t *a_format;
+
+	zc_assert(a_conf,);
+	zc_profile(flag, "-conf[%p]-", a_conf);
+	zc_profile(flag, "--global--");
+	zc_profile(flag, "---file[%s],mtime[%s]---", a_conf->file, a_conf->mtime);
+	zc_profile(flag, "---in-memory conf[%s]---", a_conf->cfg_ptr);
+	zc_profile(flag, "---strict init[%d]---", a_conf->strict_init);
+	zc_profile(flag, "---buffer min[%ld]---", a_conf->buf_size_min);
+	zc_profile(flag, "---buffer max[%ld]---", a_conf->buf_size_max);
+	if (a_conf->default_format) {
+		zc_profile(flag, "---default_format---");
+		zlog_format_profile(a_conf->default_format, flag);
+	}
+	zc_profile(flag, "---file perms[0%o]---", a_conf->file_perms);
+	zc_profile(flag, "---reload conf period[%ld]---", a_conf->reload_conf_period);
+	zc_profile(flag, "---fsync period[%ld]---", a_conf->fsync_period);
+
+	zc_profile(flag, "---rotate lock file[%s]---", a_conf->rotate_lock_file);
+	if (a_conf->rotater) zlog_rotater_profile(a_conf->rotater, flag);
+
+	if (a_conf->levels) zlog_level_list_profile(a_conf->levels, flag);
+
+	if (a_conf->formats) {
+		zc_profile(flag, "--format list[%p]--", a_conf->formats);
+		zc_arraylist_foreach(a_conf->formats, i, a_format) {
+			zlog_format_profile(a_format, flag);
+		}
+	}
+
+	if (a_conf->rules) {
+		zc_profile(flag, "--rule_list[%p]--", a_conf->rules);
+		zc_arraylist_foreach(a_conf->rules, i, a_rule) {
+			zlog_rule_profile(a_rule, flag);
+		}
+	}
+
+	return;
+}
+/*******************************************************************************/
+void zlog_conf_del(zlog_conf_t * a_conf)
+{
+	zc_assert(a_conf,);
+	if (a_conf->rotater) zlog_rotater_del(a_conf->rotater);
+	if (a_conf->levels) zlog_level_list_del(a_conf->levels);
+	if (a_conf->default_format) zlog_format_del(a_conf->default_format);
+	if (a_conf->formats) zc_arraylist_del(a_conf->formats);
+	if (a_conf->rules) zc_arraylist_del(a_conf->rules);
+	free(a_conf);
+	zc_debug("zlog_conf_del[%p]");
+	return;
+}
+
+static int zlog_conf_build_without_file(zlog_conf_t * a_conf);
+static int zlog_conf_build_with_file(zlog_conf_t * a_conf);
+static int zlog_conf_build_with_string(zlog_conf_t *a_conf,
+	const char *conf_string);
+static int zlog_conf_build_with_in_memory(zlog_conf_t * a_conf);
+
+enum{
+	NO_CFG,
+	FILE_CFG,
+	IN_MEMORY_CFG
+};
+/*******************************************************************************/
+zlog_conf_t *zlog_conf_new(const char *config)
+{
+	int nwrite = 0;
+	int cfg_source = 0;
+	zlog_conf_t *a_conf = NULL;
+
+	a_conf = calloc(1, sizeof(zlog_conf_t));
+	if (!a_conf) {
+		zc_error("calloc fail, errno[%d]", errno);
+		return NULL;
+	}
+
+	// Find content of pointer. If it starts with '[' then content are configurations.
+	if (config && config[0] != '\0' && config[0] != '[') {
+		nwrite = snprintf(a_conf->file, sizeof(a_conf->file), "%s", config);
+		cfg_source = FILE_CFG;
+	} else if (getenv("ZLOG_CONF_PATH") != NULL) {
+		nwrite = snprintf(a_conf->file, sizeof(a_conf->file), "%s", getenv("ZLOG_CONF_PATH"));
+		cfg_source = FILE_CFG;
+	} else if (config && config[0]=='[') {
+		memset(a_conf->file, 0x00, sizeof(a_conf->file));
+		nwrite = snprintf(a_conf->cfg_ptr, sizeof(a_conf->cfg_ptr), "%s", config);
+		cfg_source = IN_MEMORY_CFG;
+		if (nwrite < 0 || nwrite >= sizeof(a_conf->file)) {
+			zc_error("not enough space for configurations, nwrite=[%d], errno[%d]", nwrite, errno);
+			goto err;
+		}
+	} else {
+		memset(a_conf->file, 0x00, sizeof(a_conf->file));
+		cfg_source = NO_CFG;
+	}
+	if ((nwrite < 0) || ((nwrite >= sizeof(a_conf->file)) && (cfg_source == FILE_CFG))) {
+		zc_error("not enough space for path name, nwrite=[%d], errno[%d]", nwrite, errno);
+		goto err;
+	}
+
+	/* set default configuration start */
+	a_conf->strict_init = 1;
+	a_conf->buf_size_min = ZLOG_CONF_DEFAULT_BUF_SIZE_MIN;
+	a_conf->buf_size_max = ZLOG_CONF_DEFAULT_BUF_SIZE_MAX;
+	if (cfg_source == FILE_CFG) {
+		/* configure file as default lock file */
+		strcpy(a_conf->rotate_lock_file, a_conf->file);
+	} else {
+		strcpy(a_conf->rotate_lock_file, ZLOG_CONF_BACKUP_ROTATE_LOCK_FILE);
+	}
+	strcpy(a_conf->default_format_line, ZLOG_CONF_DEFAULT_FORMAT);
+	a_conf->file_perms = ZLOG_CONF_DEFAULT_FILE_PERMS;
+	a_conf->reload_conf_period = ZLOG_CONF_DEFAULT_RELOAD_CONF_PERIOD;
+	a_conf->fsync_period = ZLOG_CONF_DEFAULT_FSYNC_PERIOD;
+	/* set default configuration end */
+
+	a_conf->levels = zlog_level_list_new();
+	if (!a_conf->levels) {
+		zc_error("zlog_level_list_new fail");
+		goto err;
+	}
+
+	a_conf->formats = zc_arraylist_new((zc_arraylist_del_fn) zlog_format_del);
+	if (!a_conf->formats) {
+		zc_error("zc_arraylist_new fail");
+		goto err;
+	}
+
+	a_conf->rules = zc_arraylist_new((zc_arraylist_del_fn) zlog_rule_del);
+	if (!a_conf->rules) {
+		zc_error("init rule_list fail");
+		goto err;
+	}
+
+	if (cfg_source == FILE_CFG) {
+		if (zlog_conf_build_with_file(a_conf)) {
+			zc_error("zlog_conf_build_with_file fail");
+			goto err;
+		}
+	} else if (cfg_source == IN_MEMORY_CFG) {
+		if(zlog_conf_build_with_in_memory(a_conf)){
+			zc_error("zlog_conf_build_with_in_memory fail");
+			goto err;
+		}
+	} else {
+		if (zlog_conf_build_without_file(a_conf)) {
+			zc_error("zlog_conf_build_without_file fail");
+			goto err;
+		}
+	}
+
+	zlog_conf_profile(a_conf, ZC_DEBUG);
+	return a_conf;
+err:
+	zlog_conf_del(a_conf);
+	return NULL;
+}
+/*******************************************************************************/
+zlog_conf_t *zlog_conf_new_from_string(const char *config_string)
+{
+    zlog_conf_t *a_conf = NULL;
+
+    a_conf = calloc(1, sizeof(zlog_conf_t));
+    if (!a_conf) {
+        zc_error("calloc fail, errno[%d]", errno);
+        return NULL;
+    }
+
+    // no configuration file
+    memset(a_conf->file, 0x00, sizeof(a_conf->file));
+
+    a_conf->levels = zlog_level_list_new();
+    if (!a_conf->levels) {
+        zc_error("zlog_level_list_new fail");
+        goto err;
+    }
+
+    a_conf->formats = zc_arraylist_new((zc_arraylist_del_fn) zlog_format_del);
+    if (!a_conf->formats) {
+        zc_error("zc_arraylist_new fail");
+        goto err;
+    }
+
+    a_conf->rules = zc_arraylist_new((zc_arraylist_del_fn) zlog_rule_del);
+    if (!a_conf->rules) {
+        zc_error("init rule_list fail");
+        goto err;
+    }
+
+    strcpy(a_conf->rotate_lock_file, "zlog-rotate.lock");
+    a_conf->strict_init = 1;
+    a_conf->buf_size_min = ZLOG_CONF_DEFAULT_BUF_SIZE_MIN;
+    a_conf->buf_size_max = ZLOG_CONF_DEFAULT_BUF_SIZE_MAX;
+    strcpy(a_conf->default_format_line, ZLOG_CONF_DEFAULT_FORMAT);
+    a_conf->file_perms = ZLOG_CONF_DEFAULT_FILE_PERMS;
+    a_conf->reload_conf_period = ZLOG_CONF_DEFAULT_RELOAD_CONF_PERIOD;
+    a_conf->fsync_period = ZLOG_CONF_DEFAULT_FSYNC_PERIOD;
+
+    a_conf->default_format = zlog_format_new(a_conf->default_format_line,
+            &(a_conf->time_cache_count));
+    if (!a_conf->default_format) {
+        zc_error("zlog_format_new fail");
+        goto err;
+    }
+
+    a_conf->rotater = zlog_rotater_new(a_conf->rotate_lock_file);
+    if (!a_conf->rotater) {
+        zc_error("zlog_rotater_new fail");
+        goto err;
+    }
+
+    if (zlog_conf_build_with_string(a_conf, config_string)) {
+        zc_error("zlog_conf_build_with_string fail");
+        goto err;
+    }
+
+    zlog_conf_profile(a_conf, ZC_DEBUG);
+    return a_conf;
+err:
+    zlog_conf_del(a_conf);
+    return NULL;
+}
+/*******************************************************************************/
+static int zlog_conf_build_without_file(zlog_conf_t * a_conf)
+{
+	zlog_rule_t *default_rule;
+
+	a_conf->default_format = zlog_format_new(a_conf->default_format_line, &(a_conf->time_cache_count));
+	if (!a_conf->default_format) {
+		zc_error("zlog_format_new fail");
+		return -1;
+	}
+
+	a_conf->rotater = zlog_rotater_new(a_conf->rotate_lock_file);
+	if (!a_conf->rotater) {
+		zc_error("zlog_rotater_new fail");
+		return -1;
+	}
+
+	default_rule = zlog_rule_new(
+			ZLOG_CONF_DEFAULT_RULE,
+			a_conf->levels,
+			a_conf->default_format,
+			a_conf->formats,
+			a_conf->file_perms,
+			a_conf->fsync_period,
+			&(a_conf->time_cache_count));
+	if (!default_rule) {
+		zc_error("zlog_rule_new fail");
+		return -1;
+	}
+
+	/* add default rule */
+	if (zc_arraylist_add(a_conf->rules, default_rule)) {
+		zlog_rule_del(default_rule);
+		zc_error("zc_arraylist_add fail");
+		return -1;
+	}
+
+	return 0;
+}
+/*******************************************************************************/
+static int zlog_conf_parse_line(zlog_conf_t * a_conf, char *line, int *section);
+
+char *sgets(char *s, int size, char **string)
+{
+    if (*string == NULL) return NULL;
+
+    char* nlp = strchr(*string, '\n');
+    char *fstring = *string;
+    if (nlp == NULL) {
+        if (strlen(fstring) > 0) {
+            nlp = fstring + strlen(fstring);
+        } else {
+            return NULL;
+        }
+    }
+
+    int ss =  (int)(nlp + 1 -  fstring);
+    if (size > ss)
+        size = ss;
+
+    memcpy(s, *string, size);
+    s[size] = 0;
+    if (strlen(*string) == strlen(s)) {
+        *string = NULL;
+    } else {
+        *string += size;
+    }
+    return s;
+}
+
+static int zlog_conf_build_with_string(zlog_conf_t *a_conf,
+        const char *conf_string)
+{
+    int rc = 0;
+    char line[MAXLEN_CFG_LINE + 1];
+    size_t line_len;
+    char *pline = NULL;
+    char *p = NULL;
+    int line_no = 0;
+    int i = 0;
+    int in_quotation = 0;
+    char *conf_string_l = (char*) conf_string;
+
+    int section = 0;
+    /* [global:1] [levels:2] [formats:3] [rules:4] */
+
+    if (a_conf == NULL) {
+        return -1;
+    }
+
+    /* Now process the file.
+     */
+    pline = line;
+    memset(&line, 0x00, sizeof(line));
+    while (sgets(pline, MAXLEN_CFG_LINE, &conf_string_l) != NULL) {
+        ++line_no;
+        line_len = strlen(pline);
+        if (pline[line_len - 1] == '\n') {
+            pline[line_len - 1] = '\0';
+        }
+
+        /* check for end-of-section, comments, strip off trailing
+         * spaces and newline character.
+         */
+        p = pline;
+        while (*p && isspace((int)*p))
+            ++p;
+        if (*p == '\0' || *p == '#')
+            continue;
+
+        for (i = 0; p[i] != '\0'; ++i) {
+            pline[i] = p[i];
+        }
+        pline[i] = '\0';
+
+        for (p = pline + strlen(pline) - 1; isspace((int)*p); --p)
+            /*EMPTY*/;
+
+        if (*p == '\\') {
+            if ((p - line) > MAXLEN_CFG_LINE - 30) {
+                /* Oops the buffer is full - what now? */
+                pline = line;
+            } else {
+                for (p--; isspace((int)*p); --p)
+                    /*EMPTY*/;
+                p++;
+                *p = 0;
+                pline = p;
+                continue;
+            }
+        } else {
+            memmove(line, pline, strlen(pline)+1);
+        }
+
+        *++p = '\0';
+
+        /* clean the tail comments start from # and not in quotation */
+        in_quotation = 0;
+        for (p = line; *p != '\0'; p++) {
+            if (*p == '"') {
+                in_quotation ^= 1;
+                continue;
+            }
+
+            if (*p == '#' && !in_quotation) {
+                *p = '\0';
+                break;
+            }
+        }
+
+        /* we now have the complete line,
+         * and are positioned at the first non-whitespace
+         * character. So let's process it
+         */
+        rc = zlog_conf_parse_line(a_conf, line, &section);
+        if (rc < 0) {
+            zc_error("parse configure file[%s]line_no[%ld] fail", a_conf->file, line_no);
+            zc_error("line[%s]", line);
+            goto exit;
+        } else if (rc > 0) {
+            zc_warn("parse configure file[%s]line_no[%ld] fail", a_conf->file, line_no);
+            zc_warn("line[%s]", line);
+            zc_warn("as strict init is set to false, ignore and go on");
+            rc = 0;
+            continue;
+        }
+    }
+
+exit:
+    return rc;
+}
+
+static int zlog_conf_build_with_file(zlog_conf_t * a_conf)
+{
+	int rc = 0;
+	struct zlog_stat a_stat;
+	struct tm local_time;
+	FILE *fp = NULL;
+
+	char line[MAXLEN_CFG_LINE + 1];
+	size_t line_len;
+	char *pline = NULL;
+	char *p = NULL;
+	int line_no = 0;
+	int i = 0;
+	int in_quotation = 0;
+
+	int section = 0;
+	/* [global:1] [levels:2] [formats:3] [rules:4] */
+
+	if (STATS_FILE(a_conf->file, &a_stat)) {
+		zc_error("lstat conf file[%s] fail, errno[%d]", a_conf->file,
+			 errno);
+		return -1;
+	}
+	localtime_r(&(a_stat.st_mtime), &local_time);
+	strftime(a_conf->mtime, sizeof(a_conf->mtime), "%Y-%m-%d %H:%M:%S", &local_time);
+
+	if ((fp = fopen(a_conf->file, "r")) == NULL) {
+		zc_error("open configure file[%s] fail", a_conf->file);
+		return -1;
+	}
+
+	a_conf->log_level[0] = '\0';
+
+	/* Now process the file.
+	 */
+	pline = line;
+	memset(&line, 0x00, sizeof(line));
+	while (fgets((char *)pline, sizeof(line) - (pline - line), fp) != NULL) {
+		++line_no;
+		line_len = strlen(pline);
+		if (0 == line_len) {
+			continue;
+		}
+
+		if (pline[line_len - 1] == '\n') {
+			pline[line_len - 1] = '\0';
+		}
+
+		/* check for end-of-section, comments, strip off trailing
+		 * spaces and newline character.
+		 */
+		p = pline;
+		while (*p && isspace((int)*p))
+			++p;
+		if (*p == '\0' || *p == '#')
+			continue;
+
+		for (i = 0; p[i] != '\0'; ++i) {
+			pline[i] = p[i];
+		}
+		pline[i] = '\0';
+
+		for (p = pline + strlen(pline) - 1; isspace((int)*p); --p)
+			/*EMPTY*/;
+
+		if (*p == '\\') {
+			if ((p - line) > MAXLEN_CFG_LINE - 30) {
+				/* Oops the buffer is full - what now? */
+				pline = line;
+			} else {
+				for (p--; p >= line && isspace((int)*p); --p)
+					/*EMPTY*/;
+				p++;
+				*p = 0;
+				pline = p;
+				continue;
+			}
+		} else
+			pline = line;
+
+		*++p = '\0';
+
+		/* clean the tail comments start from # and not in quotation */
+		in_quotation = 0;
+		for (p = line; *p != '\0'; p++) {
+			if (*p == '"') {
+				in_quotation ^= 1;
+				continue;
+			}
+
+			if (*p == '#' && !in_quotation) {
+				*p = '\0';
+				break;
+			}
+		}
+
+		/* we now have the complete line,
+		 * and are positioned at the first non-whitespace
+		 * character. So let's process it
+		 */
+		rc = zlog_conf_parse_line(a_conf, line, &section);
+		if (rc < 0) {
+			zc_error("parse configure file[%s]line_no[%ld] fail", a_conf->file, line_no);
+			zc_error("line[%s]", line);
+			goto exit;
+		} else if (rc > 0) {
+			zc_warn("parse configure file[%s]line_no[%ld] fail", a_conf->file, line_no);
+			zc_warn("line[%s]", line);
+			zc_warn("as strict init is set to false, ignore and go on");
+			rc = 0;
+			continue;
+		}
+	}
+
+	if (a_conf->log_level[0] != '\0') {
+		a_conf->level = zlog_level_list_atoi(a_conf->levels, a_conf->log_level);
+	}
+
+exit:
+	fclose(fp);
+	return rc;
+}
+/**********************************************************************/
+static int zlog_conf_build_with_in_memory(zlog_conf_t * a_conf)
+{
+	int rc = 0;
+	char line[MAXLEN_CFG_LINE + 1];
+	char *pline = NULL;
+	int section = 0;
+	pline = line;
+	memset(&line, 0x00, sizeof(line));
+	pline = strtok((char *)a_conf->cfg_ptr, "\n");
+
+	while (pline != NULL) {
+		rc = zlog_conf_parse_line(a_conf, pline, &section);
+		if (rc < 0) {
+			zc_error("parse in-memory configurations[%s] line [%s] fail", a_conf->cfg_ptr, pline);
+			break;
+		} else if (rc > 0) {
+			zc_error("parse in-memory configurations[%s] line [%s] fail", a_conf->cfg_ptr, pline);
+			zc_warn("as strict init is set to false, ignore and go on");
+			rc = 0;
+			continue;
+		}
+		pline = strtok(NULL, "\n");
+	}
+	return rc;
+}
+/* section [global:1] [levels:2] [formats:3] [rules:4] */
+static int zlog_conf_parse_line(zlog_conf_t * a_conf, char *line, int *section)
+{
+	int nscan;
+	int nread;
+	char name[MAXLEN_CFG_LINE + 1] = "";
+	char word_1[MAXLEN_CFG_LINE + 1];
+	char word_2[MAXLEN_CFG_LINE + 1];
+	char word_3[MAXLEN_CFG_LINE + 1];
+	char value[MAXLEN_CFG_LINE + 1];
+	zlog_format_t *a_format = NULL;
+	zlog_rule_t *a_rule = NULL;
+
+	if (strlen(line) > MAXLEN_CFG_LINE) {
+		zc_error ("line_len[%ld] > MAXLEN_CFG_LINE[%ld], may cause overflow",
+			strlen(line), MAXLEN_CFG_LINE);
+		return -1;
+	}
+
+	/* get and set outer section flag, so it is a closure? haha */
+	if (line[0] == '[') {
+		int last_section = *section;
+		nscan = sscanf(line, "[ %[^] \t]", name);
+		if (STRCMP(name, ==, "global")) {
+			*section = 1;
+		} else if (STRCMP(name, ==, "levels")) {
+			*section = 2;
+		} else if (STRCMP(name, ==, "formats")) {
+			*section = 3;
+		} else if (STRCMP(name, ==, "rules")) {
+			*section = 4;
+		} else {
+			zc_error("wrong section name[%s]", name);
+			return -1;
+		}
+		/* check the sequence of section, must increase */
+		if (last_section >= *section) {
+			zc_error("wrong sequence of section, must follow global->levels->formats->rules");
+			return -1;
+		}
+
+		if (*section == 4) {
+			if (a_conf->reload_conf_period != 0
+				&& a_conf->fsync_period >= a_conf->reload_conf_period) {
+				/* as all rule will be rebuilt when conf is reload,
+				 * so fsync_period > reload_conf_period will never
+				 * cause rule to fsync it's file.
+				 * fsync_period will be meaningless and down speed,
+				 * so make it zero.
+				 */
+				zc_warn("fsync_period[%ld] >= reload_conf_period[%ld],"
+					"set fsync_period to zero");
+				a_conf->fsync_period = 0;
+			}
+
+			/* now build rotater and default_format
+			 * from the unchanging global setting,
+			 * for zlog_rule_new() */
+			a_conf->rotater = zlog_rotater_new(a_conf->rotate_lock_file);
+			if (!a_conf->rotater) {
+				zc_error("zlog_rotater_new fail");
+				return -1;
+			}
+
+			a_conf->default_format = zlog_format_new(a_conf->default_format_line,
+							&(a_conf->time_cache_count));
+			if (!a_conf->default_format) {
+				zc_error("zlog_format_new fail");
+				return -1;
+			}
+		}
+		return 0;
+	}
+
+	/* process detail */
+	switch (*section) {
+	case 1:
+		memset(name, 0x00, sizeof(name));
+		memset(value, 0x00, sizeof(value));
+		nscan = sscanf(line, " %[^=]= %s ", name, value);
+		if (nscan != 2) {
+			zc_error("sscanf [%s] fail, name or value is null", line);
+			return -1;
+		}
+
+		memset(word_1, 0x00, sizeof(word_1));
+		memset(word_2, 0x00, sizeof(word_2));
+		memset(word_3, 0x00, sizeof(word_3));
+		nread = 0;
+		nscan = sscanf(name, "%s%n%s%s", word_1, &nread, word_2, word_3);
+
+		if (STRCMP(word_1, ==, "strict") && STRCMP(word_2, ==, "init")) {
+			/* if environment variable ZLOG_STRICT_INIT is set
+			 * then always make it strict
+			 */
+			if (STRICMP(value, ==, "false") && !getenv("ZLOG_STRICT_INIT")) {
+				a_conf->strict_init = 0;
+			} else {
+				a_conf->strict_init = 1;
+			}
+		} else if (STRCMP(word_1, ==, "log") && STRCMP(word_2, ==, "level")) {
+			strcpy(a_conf->log_level, value);
+		} else if (STRCMP(word_1, ==, "buffer") && STRCMP(word_2, ==, "min")) {
+			a_conf->buf_size_min = zc_parse_byte_size(value);
+		} else if (STRCMP(word_1, ==, "buffer") && STRCMP(word_2, ==, "max")) {
+			a_conf->buf_size_max = zc_parse_byte_size(value);
+		} else if (STRCMP(word_1, ==, "file") && STRCMP(word_2, ==, "perms")) {
+			sscanf(value, "%o", &(a_conf->file_perms));
+		} else if (STRCMP(word_1, ==, "rotate") &&
+				STRCMP(word_2, ==, "lock") && STRCMP(word_3, ==, "file")) {
+			/* may overwrite the inner default value, or last value */
+			if (STRCMP(value, ==, "self")) {
+				strcpy(a_conf->rotate_lock_file, a_conf->file);
+			} else {
+				strcpy(a_conf->rotate_lock_file, value);
+			}
+		} else if (STRCMP(word_1, ==, "default") && STRCMP(word_2, ==, "format")) {
+			/* so the input now is [format = "xxyy"], fit format's style */
+			strcpy(a_conf->default_format_line, line + nread);
+		} else if (STRCMP(word_1, ==, "reload") &&
+				STRCMP(word_2, ==, "conf") && STRCMP(word_3, ==, "period")) {
+			a_conf->reload_conf_period = zc_parse_byte_size(value);
+		} else if (STRCMP(word_1, ==, "fsync") && STRCMP(word_2, ==, "period")) {
+			a_conf->fsync_period = zc_parse_byte_size(value);
+		} else {
+			zc_error("name[%s] is not any one of global options", name);
+			if (a_conf->strict_init) return -1;
+		}
+		break;
+	case 2:
+		if (zlog_level_list_set(a_conf->levels, line)) {
+			zc_error("zlog_level_list_set fail");
+			if (a_conf->strict_init) return -1;
+		}
+		break;
+	case 3:
+		a_format = zlog_format_new(line, &(a_conf->time_cache_count));
+		if (!a_format) {
+			zc_error("zlog_format_new fail [%s]", line);
+			if (a_conf->strict_init) return -1;
+			else break;
+		}
+		if (zc_arraylist_add(a_conf->formats, a_format)) {
+			zlog_format_del(a_format);
+			zc_error("zc_arraylist_add fail");
+			return -1;
+		}
+		break;
+	case 4:
+		a_rule = zlog_rule_new(line,
+			a_conf->levels,
+			a_conf->default_format,
+			a_conf->formats,
+			a_conf->file_perms,
+			a_conf->fsync_period,
+			&(a_conf->time_cache_count));
+
+		if (!a_rule) {
+			zc_error("zlog_rule_new fail [%s]", line);
+			if (a_conf->strict_init) return -1;
+			else break;
+		}
+		if (zc_arraylist_add(a_conf->rules, a_rule)) {
+			zlog_rule_del(a_rule);
+			zc_error("zc_arraylist_add fail");
+			return -1;
+		}
+		break;
+	default:
+		zc_error("not in any section");
+		return -1;
+	}
+
+	return 0;
+}
+/*******************************************************************************/

zlog/src/conf.h

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __zlog_conf_h
+#define __zlog_conf_h
+
+#include "zc_defs.h"
+#include "format.h"
+#include "rotater.h"
+
+typedef struct zlog_conf_s {
+	char file[MAXLEN_PATH + 1];
+	char cfg_ptr[MAXLEN_CFG_LINE*MAXLINES_NO];
+	char mtime[20 + 1];
+
+	int strict_init;
+	size_t buf_size_min;
+	size_t buf_size_max;
+
+	char rotate_lock_file[MAXLEN_CFG_LINE + 1];
+	zlog_rotater_t *rotater;
+
+	char default_format_line[MAXLEN_CFG_LINE + 1];
+	zlog_format_t *default_format;
+
+	unsigned int file_perms;
+	size_t fsync_period;
+	size_t reload_conf_period;
+
+	zc_arraylist_t *levels;
+	zc_arraylist_t *formats;
+	zc_arraylist_t *rules;
+	int time_cache_count;
+	char log_level[MAXLEN_CFG_LINE + 1];
+	int level;
+} zlog_conf_t;
+
+extern zlog_conf_t * zlog_env_conf;
+
+zlog_conf_t *zlog_conf_new(const char *config);
+zlog_conf_t *zlog_conf_new_from_string(const char *config_string);
+void zlog_conf_del(zlog_conf_t * a_conf);
+void zlog_conf_profile(zlog_conf_t * a_conf, int flag);
+
+#endif

zlog/src/event.c

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define _GNU_SOURCE // For distros like Centos for syscall interface
+
+#include "fmacros.h"
+#include <string.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdint.h>
+
+#include <pthread.h>
+#include <unistd.h>
+#include <sys/time.h>
+
+#include <sys/types.h>
+#include <sys/syscall.h>
+
+#include "zc_defs.h"
+#include "event.h"
+#ifdef _WIN32
+#include <Winsock2.h>
+#endif
+
+void zlog_event_profile(zlog_event_t * a_event, int flag)
+{
+	zc_assert(a_event,);
+	zc_profile(flag, "---event[%p][%s,%s][%s(%ld),%s(%ld),%ld,%d][%p,%s][%ld,%ld][%ld,%ld][%d]---",
+			a_event,
+			a_event->category_name, a_event->host_name,
+			a_event->file, a_event->file_len,
+			a_event->func, a_event->func_len,
+			a_event->line, a_event->level,
+			a_event->hex_buf, a_event->str_format,
+			a_event->time_stamp.tv_sec, a_event->time_stamp.tv_usec,
+			(long)a_event->pid, (long)a_event->tid,
+			a_event->time_cache_count);
+	return;
+}
+
+/*******************************************************************************/
+
+void zlog_event_del(zlog_event_t * a_event)
+{
+	zc_assert(a_event,);
+	if (a_event->time_caches) free(a_event->time_caches);
+	zc_debug("zlog_event_del[%p]", a_event);
+    free(a_event);
+	return;
+}
+
+zlog_event_t *zlog_event_new(int time_cache_count)
+{
+	zlog_event_t *a_event;
+
+	a_event = calloc(1, sizeof(zlog_event_t));
+	if (!a_event) {
+		zc_error("calloc fail, errno[%d]", errno);
+		return NULL;
+	}
+
+	a_event->time_caches = calloc(time_cache_count, sizeof(zlog_time_cache_t));
+	if (!a_event->time_caches) {
+		zc_error("calloc fail, errno[%d]", errno);
+		free(a_event);
+		return NULL;
+	}
+	a_event->time_cache_count = time_cache_count;
+
+	/*
+	 * at the zlog_init we gethostname,
+	 * u don't always change your hostname, eh?
+	 */
+	if (gethostname(a_event->host_name, sizeof(a_event->host_name) - 1)) {
+		zc_error("gethostname fail, errno[%d]", errno);
+		goto err;
+	}
+
+	a_event->host_name_len = strlen(a_event->host_name);
+
+	/* tid is bound to a_event
+	 * as in whole lifecycle event persists
+	 * even fork to oth pid, tid not change
+	 */
+	a_event->tid = pthread_self();
+
+	a_event->tid_str_len = sprintf(a_event->tid_str, "%lu", (unsigned long)a_event->tid);
+	a_event->tid_hex_str_len = sprintf(a_event->tid_hex_str, "%x", (unsigned int)a_event->tid);
+
+#ifdef __linux__
+	a_event->ktid = syscall(SYS_gettid);
+#elif __APPLE__
+    uint64_t tid64;
+    pthread_threadid_np(NULL, &tid64);
+    a_event->tid = (pthread_t)tid64;
+#endif
+
+#if defined __linux__ || __APPLE__
+	a_event->ktid_str_len = sprintf(a_event->ktid_str, "%u", (unsigned int)a_event->ktid);
+#endif
+
+	//zlog_event_profile(a_event, ZC_DEBUG);
+	return a_event;
+err:
+	zlog_event_del(a_event);
+	return NULL;
+}
+
+/*******************************************************************************/
+void zlog_event_set_fmt(zlog_event_t * a_event,
+			char *category_name, size_t category_name_len,
+			const char *file, size_t file_len, const char *func, size_t func_len,  long line, int level,
+			const char *str_format, va_list str_args)
+{
+	/*
+	 * category_name point to zlog_category_output's category.name
+	 */
+	a_event->category_name = category_name;
+	a_event->category_name_len = category_name_len;
+
+	a_event->file = (char *) file;
+	a_event->file_len = file_len;
+	a_event->func = (char *) func;
+	a_event->func_len = func_len;
+	a_event->line = line;
+	a_event->level = level;
+
+	a_event->generate_cmd = ZLOG_FMT;
+	a_event->str_format = str_format;
+	va_copy(a_event->str_args, str_args);
+
+	/* pid should fetch eveytime, as no one knows,
+	 * when does user fork his process
+	 * so clean here, and fetch at spec.c
+	 */
+	a_event->pid = (pid_t) 0;
+
+	/* in a event's life cycle, time will be get when spec need,
+	 * and keep unchange though all event's life cycle
+	 * zlog_spec_write_time gettimeofday
+	 */
+	a_event->time_stamp.tv_sec = 0;
+	return;
+}
+
+void zlog_event_set_hex(zlog_event_t * a_event,
+			char *category_name, size_t category_name_len,
+			const char *file, size_t file_len, const char *func, size_t func_len,  long line, int level,
+			const void *hex_buf, size_t hex_buf_len)
+{
+	/*
+	 * category_name point to zlog_category_output's category.name
+	 */
+	a_event->category_name = category_name;
+	a_event->category_name_len = category_name_len;
+
+	a_event->file = (char *) file;
+	a_event->file_len = file_len;
+	a_event->func = (char *) func;
+	a_event->func_len = func_len;
+	a_event->line = line;
+	a_event->level = level;
+
+	a_event->generate_cmd = ZLOG_HEX;
+	a_event->hex_buf = hex_buf;
+	a_event->hex_buf_len = hex_buf_len;
+
+	/* pid should fetch eveytime, as no one knows,
+	 * when does user fork his process
+	 * so clean here, and fetch at spec.c
+	 */
+	a_event->pid = (pid_t) 0;
+
+	/* in a event's life cycle, time will be get when spec need,
+	 * and keep unchange though all event's life cycle
+	 */
+	a_event->time_stamp.tv_sec = 0;
+	return;
+}

zlog/src/event.h

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __zlog_event_h
+#define __zlog_event_h
+
+#include <sys/types.h>  /* for pid_t */
+#include <sys/time.h>   /* for struct timeval */
+#include <pthread.h>    /* for pthread_t */
+#include <stdarg.h>     /* for va_list */
+#include "zc_defs.h"
+
+typedef enum {
+	ZLOG_FMT = 0,
+	ZLOG_HEX = 1,
+} zlog_event_cmd;
+
+typedef struct zlog_time_cache_s {
+	char str[MAXLEN_CFG_LINE + 1];
+	size_t len;
+	time_t sec;
+} zlog_time_cache_t;
+
+typedef struct {
+	char *category_name;
+	size_t category_name_len;
+	char host_name[256 + 1];
+	size_t host_name_len;
+
+	const char *file;
+	size_t file_len;
+	const char *func;
+	size_t func_len;
+	long line;
+	int level;
+
+	const void *hex_buf;
+	size_t hex_buf_len;
+	const char *str_format;
+	va_list str_args;
+	zlog_event_cmd generate_cmd;
+
+	struct timeval time_stamp;
+
+	time_t time_utc_sec;
+	struct tm time_utc;
+	time_t time_local_sec;
+	struct tm time_local;
+
+	zlog_time_cache_t *time_caches;
+	int time_cache_count;
+
+	pid_t pid;
+	pid_t last_pid;
+	char pid_str[30 + 1];
+	size_t pid_str_len;
+
+	pthread_t tid;
+	char tid_str[30 + 1];
+	size_t tid_str_len;
+
+	char tid_hex_str[30 + 1];
+	size_t tid_hex_str_len;
+
+#if defined __linux__ || __APPLE__
+	pid_t ktid;
+	char ktid_str[30+1];
+	size_t ktid_str_len;
+#endif
+} zlog_event_t;
+
+
+zlog_event_t *zlog_event_new(int time_cache_count);
+void zlog_event_del(zlog_event_t * a_event);
+void zlog_event_profile(zlog_event_t * a_event, int flag);
+
+void zlog_event_set_fmt(zlog_event_t * a_event,
+			char *category_name, size_t category_name_len,
+			const char *file, size_t file_len, const char *func, size_t func_len, long line, int level,
+			const char *str_format, va_list str_args);
+
+void zlog_event_set_hex(zlog_event_t * a_event,
+			char *category_name, size_t category_name_len,
+			const char *file, size_t file_len, const char *func, size_t func_len, long line, int level,
+			const void *hex_buf, size_t hex_buf_len);
+
+#endif

zlog/src/fmacros.h

+#ifndef __zlog_fmacro_h
+#define __zlog_fmacro_h
+
+#ifndef _BSD_SOURCE
+#define _BSD_SOURCE
+#endif
+
+#ifndef _DEFAULT_SOURCE
+#define _DEFAULT_SOURCE
+#endif
+
+#if defined(__linux__) || defined(__OpenBSD__) || defined(_AIX)
+#ifndef _XOPEN_SOURCE
+#define _XOPEN_SOURCE 700
+#endif
+#ifndef _XOPEN_SOURCE_EXTENDED
+#define _XOPEN_SOURCE_EXTENDED
+#endif
+#if defined(__APPLE__)
+#include <AvailabilityMacros.h>
+#else
+#ifndef _POSIX_C_SOURCE
+#define _POSIX_C_SOURCE 200809L
+#endif
+#endif
+#ifndef _XOPEN_SOURCE
+#define _XOPEN_SOURCE
+#endif
+#endif
+
+#ifndef _LARGEFILE_SOURCE
+#define _LARGEFILE_SOURCE
+#endif
+
+#ifndef _LARGEFILE_SOURCE
+#define _LARGEFILE_SOURCE
+#endif
+#ifndef _FILE_OFFSET_BITS
+#define _FILE_OFFSET_BITS 64
+#endif
+
+#endif

zlog/src/format.c

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <errno.h>
+#include <ctype.h>
+
+#include "zc_defs.h"
+#include "thread.h"
+#include "spec.h"
+#include "format.h"
+
+void zlog_format_profile(zlog_format_t * a_format, int flag)
+{
+
+	zc_assert(a_format,);
+	zc_profile(flag, "---format[%p][%s = %s(%p)]---",
+		a_format,
+		a_format->name,
+		a_format->pattern,
+		a_format->pattern_specs);
+
+#if 0
+	int i;
+	zlog_spec_t *a_spec;
+	zc_arraylist_foreach(a_format->pattern_specs, i, a_spec) {
+		zlog_spec_profile(a_spec, flag);
+	}
+#endif
+
+	return;
+}
+
+/*******************************************************************************/
+void zlog_format_del(zlog_format_t * a_format)
+{
+	zc_assert(a_format,);
+	if (a_format->pattern_specs) {
+		zc_arraylist_del(a_format->pattern_specs);
+	}
+	zc_debug("zlog_format_del[%p]", a_format);
+    free(a_format);
+	return;
+}
+
+zlog_format_t *zlog_format_new(char *line, int * time_cache_count)
+{
+	int nscan = 0;
+	zlog_format_t *a_format = NULL;
+	int nread = 0;
+	const char *p_start;
+	const char *p_end;
+	char *p;
+	char *q;
+	zlog_spec_t *a_spec;
+
+	zc_assert(line, NULL);
+
+	a_format = calloc(1, sizeof(zlog_format_t));
+	if (!a_format) {
+		zc_error("calloc fail, errno[%d]", errno);
+		return NULL;
+	}
+
+	/* line         default = "%d(%F %X.%l) %-6V (%c:%F:%L) - %m%n"
+	 * name         default
+	 * pattern      %d(%F %X.%l) %-6V (%c:%F:%L) - %m%n
+	 */
+	memset(a_format->name, 0x00, sizeof(a_format->name));
+	nread = 0;
+	nscan = sscanf(line, " %[^= \t] = %n", a_format->name, &nread);
+	if (nscan != 1) {
+		zc_error("format[%s], syntax wrong", line);
+		goto err;
+	}
+
+	if (*(line + nread) != '"') {
+		zc_error("the 1st char of pattern is not \", line+nread[%s]", line+nread);
+		goto err;
+	}
+
+	for (p = a_format->name; *p != '\0'; p++) {
+		if ((!isalnum(*p)) && (*p != '_')) {
+			zc_error("a_format->name[%s] character is not in [a-Z][0-9][_]", a_format->name);
+			goto err;
+		}
+	}
+
+	p_start = line + nread + 1;
+	p_end = strrchr(p_start, '"');
+	if (!p_end) {
+		zc_error("there is no \" at end of pattern, line[%s]", line);
+		goto err;
+	}
+
+	if (p_end - p_start > sizeof(a_format->pattern) - 1) {
+		zc_error("pattern is too long");
+		goto err;
+	}
+	memset(a_format->pattern, 0x00, sizeof(a_format->pattern));
+	memcpy(a_format->pattern, p_start, p_end - p_start);
+
+	if (zc_str_replace_env(a_format->pattern, sizeof(a_format->pattern))) {
+		zc_error("zc_str_replace_env fail");
+		goto err;
+	}
+
+	a_format->pattern_specs =
+	    zc_arraylist_new((zc_arraylist_del_fn) zlog_spec_del);
+	if (!(a_format->pattern_specs)) {
+		zc_error("zc_arraylist_new fail");
+		goto err;
+	}
+
+	for (p = a_format->pattern; *p != '\0'; p = q) {
+		a_spec = zlog_spec_new(p, &q, time_cache_count);
+		if (!a_spec) {
+			zc_error("zlog_spec_new fail");
+			goto err;
+		}
+
+		if (zc_arraylist_add(a_format->pattern_specs, a_spec)) {
+			zlog_spec_del(a_spec);
+			zc_error("zc_arraylist_add fail");
+			goto err;
+		}
+	}
+
+	zlog_format_profile(a_format, ZC_DEBUG);
+	return a_format;
+err:
+	zlog_format_del(a_format);
+	return NULL;
+}
+
+/*******************************************************************************/
+/* return 0	success, or buf is full
+ * return -1	fail
+ */
+int zlog_format_gen_msg(zlog_format_t * a_format, zlog_thread_t * a_thread)
+{
+	int i;
+	zlog_spec_t *a_spec;
+
+	zlog_buf_restart(a_thread->msg_buf);
+
+	zc_arraylist_foreach(a_format->pattern_specs, i, a_spec) {
+		if (zlog_spec_gen_msg(a_spec, a_thread) == 0) {
+			continue;
+		} else {
+			return -1;
+		}
+	}
+
+	return 0;
+}

zlog/src/format.h

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __zlog_format_h
+#define __zlog_format_h
+
+#include "thread.h"
+#include "zc_defs.h"
+
+typedef struct zlog_format_s zlog_format_t;
+
+struct zlog_format_s {
+	char name[MAXLEN_CFG_LINE + 1];	
+	char pattern[MAXLEN_CFG_LINE + 1];
+	zc_arraylist_t *pattern_specs;
+};
+
+zlog_format_t *zlog_format_new(char *line, int * time_cache_count);
+void zlog_format_del(zlog_format_t * a_format);
+void zlog_format_profile(zlog_format_t * a_format, int flag);
+
+int zlog_format_gen_msg(zlog_format_t * a_format, zlog_thread_t * a_thread);
+
+#define zlog_format_has_name(a_format, fname) \
+	STRCMP(a_format->name, ==, fname)
+
+#endif

zlog/src/level.c

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdio.h>
+#include <ctype.h>
+#include <errno.h>
+#ifndef _WIN32
+#include <syslog.h>
+#else
+#include "zlog_win.h"
+#endif
+
+#include "zc_defs.h"
+#include "level.h"
+
+void zlog_level_profile(zlog_level_t *a_level, int flag)
+{
+	zc_assert(a_level,);
+	zc_profile(flag, "---level[%p][%d,%s,%s,%d,%d]---",
+		a_level,
+		a_level->int_level,
+		a_level->str_uppercase,
+		a_level->str_lowercase,
+		(int) a_level->str_len,
+		a_level->syslog_level);
+	return;
+}
+
+/*******************************************************************************/
+void zlog_level_del(zlog_level_t *a_level)
+{
+	zc_assert(a_level,);
+	zc_debug("zlog_level_del[%p]", a_level);
+    free(a_level);
+	return;
+}
+
+static int syslog_level_atoi(char *str)
+{
+	/* guess no unix system will choose -187
+	 * as its syslog level, so it is a safe return value
+	 */
+	zc_assert(str, -187);
+
+	if (STRICMP(str, ==, "LOG_EMERG"))
+		return LOG_EMERG;
+	if (STRICMP(str, ==, "LOG_ALERT"))
+		return LOG_ALERT;
+	if (STRICMP(str, ==, "LOG_CRIT"))
+		return LOG_CRIT;
+	if (STRICMP(str, ==, "LOG_ERR"))
+		return LOG_ERR;
+	if (STRICMP(str, ==, "LOG_WARNING"))
+		return LOG_WARNING;
+	if (STRICMP(str, ==, "LOG_NOTICE"))
+		return LOG_NOTICE;
+	if (STRICMP(str, ==, "LOG_INFO"))
+		return LOG_INFO;
+	if (STRICMP(str, ==, "LOG_DEBUG"))
+		return LOG_DEBUG;
+
+	zc_error("wrong syslog level[%s]", str);
+	return -187;
+}
+
+/* line: TRACE = 10, LOG_ERR */
+zlog_level_t *zlog_level_new(char *line)
+{
+	zlog_level_t *a_level = NULL;
+	int i;
+	int nscan;
+	char str[MAXLEN_CFG_LINE + 1];
+	int l = 0;
+	char sl[MAXLEN_CFG_LINE + 1];
+
+	zc_assert(line, NULL);
+
+	memset(str, 0x00, sizeof(str));
+	memset(sl, 0x00, sizeof(sl));
+
+	nscan = sscanf(line, " %[^= \t] = %d ,%s", str, &l, sl);
+	if (nscan < 2) {
+		zc_error("level[%s], syntax wrong", line);
+		return NULL;
+	}
+
+	/* check level and str */
+	if ((l < 0) || (l > 255)) {
+		zc_error("l[%d] not in [0,255], wrong", l);
+		return NULL;
+	}
+
+	if (str[0] == '\0') {
+		zc_error("str[0] = 0");
+		return NULL;
+	}
+
+	a_level = calloc(1, sizeof(zlog_level_t));
+	if (!a_level) {
+		zc_error("calloc fail, errno[%d]", errno);
+		return NULL;
+	}
+
+	a_level->int_level = l;
+
+	/* fill syslog level */
+	if (sl[0] == '\0') {
+		a_level->syslog_level = LOG_DEBUG;
+	} else {
+		a_level->syslog_level = syslog_level_atoi(sl);
+		if (a_level->syslog_level == -187) {
+			zc_error("syslog_level_atoi fail");
+			goto err;
+		}
+	}
+
+	/* strncpy and toupper(str)  */
+	for (i = 0; (i < sizeof(a_level->str_uppercase) - 1) && str[i] != '\0'; i++) {
+		(a_level->str_uppercase)[i] = toupper(str[i]);
+		(a_level->str_lowercase)[i] = tolower(str[i]);
+	}
+
+	if (str[i] != '\0') {
+		/* overflow */
+		zc_error("not enough space for str, str[%s] > %d", str, i);
+		goto err;
+	} else {
+		(a_level->str_uppercase)[i] = '\0';
+		(a_level->str_lowercase)[i] = '\0';
+	}
+
+	a_level->str_len = i;
+
+	//zlog_level_profile(a_level, ZC_DEBUG);
+	return a_level;
+err:
+	zc_error("line[%s]", line);
+	zlog_level_del(a_level);
+	return NULL;
+}

zlog/src/level.h

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __zlog_level_h
+#define __zlog_level_h
+
+#include "zc_defs.h"
+
+typedef struct zlog_level_s {
+	int int_level;
+	char str_uppercase[MAXLEN_PATH + 1];
+	char str_lowercase[MAXLEN_PATH + 1];
+	size_t str_len;
+       	int syslog_level;
+} zlog_level_t;
+
+zlog_level_t *zlog_level_new(char *line);
+void zlog_level_del(zlog_level_t *a_level);
+void zlog_level_profile(zlog_level_t *a_level, int flag);
+
+#endif

zlog/src/level_list.c

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdio.h>
+#include <ctype.h>
+#include <errno.h>
+#ifdef _WIN32
+#include "zlog_win.h"
+#endif
+
+#include "zc_defs.h"
+#include "level.h"
+#include "level_list.h"
+
+/* zlog_level_list == zc_arraylist_t<zlog_level_t> */
+
+void zlog_level_list_profile(zc_arraylist_t *levels, int flag)
+{
+	int i;
+	zlog_level_t *a_level;
+
+	zc_assert(levels,);
+	zc_profile(flag, "--level_list[%p]--", levels);
+	zc_arraylist_foreach(levels, i, a_level) {
+		/* skip empty slots */
+		if (a_level) zlog_level_profile(a_level, flag);
+	}
+	return;
+}
+
+/*******************************************************************************/
+void zlog_level_list_del(zc_arraylist_t *levels)
+{
+	zc_assert(levels,);
+	zc_arraylist_del(levels);
+	zc_debug("zc_level_list_del[%p]", levels);
+	return;
+}
+
+static int zlog_level_list_set_default(zc_arraylist_t *levels)
+{
+	return zlog_level_list_set(levels, "* = 0, LOG_INFO")
+	|| zlog_level_list_set(levels, "DEBUG = 20, LOG_DEBUG")
+	|| zlog_level_list_set(levels, "INFO = 40, LOG_INFO")
+	|| zlog_level_list_set(levels, "NOTICE = 60, LOG_NOTICE")
+	|| zlog_level_list_set(levels, "WARN = 80, LOG_WARNING")
+	|| zlog_level_list_set(levels, "ERROR = 100, LOG_ERR")
+	|| zlog_level_list_set(levels, "FATAL = 120, LOG_ALERT")
+	|| zlog_level_list_set(levels, "UNKNOWN = 254, LOG_ERR")
+	|| zlog_level_list_set(levels, "! = 255, LOG_INFO");
+}
+
+zc_arraylist_t *zlog_level_list_new(void)
+{
+	zc_arraylist_t *levels;
+
+	levels = zc_arraylist_new((zc_arraylist_del_fn)zlog_level_del);
+	if (!levels) {
+		zc_error("zc_arraylist_new fail");
+		return NULL;
+	}
+
+	if (zlog_level_list_set_default(levels)) {
+		zc_error("zlog_level_set_default fail");
+		goto err;
+	}
+
+	//zlog_level_list_profile(levels, ZC_DEBUG);
+	return levels;
+err:
+	zc_arraylist_del(levels);
+	return NULL;
+}
+
+/*******************************************************************************/
+int zlog_level_list_set(zc_arraylist_t *levels, char *line)
+{
+	zlog_level_t *a_level;
+
+	a_level = zlog_level_new(line);
+	if (!a_level) {
+		zc_error("zlog_level_new fail");
+		return -1;
+	}
+
+	if (zc_arraylist_set(levels, a_level->int_level, a_level)) {
+		zc_error("zc_arraylist_set fail");
+		goto err;
+	}
+
+	return 0;
+err:
+	zc_error("line[%s]", line);
+	zlog_level_del(a_level);
+	return -1;
+}
+
+zlog_level_t *zlog_level_list_get(zc_arraylist_t *levels, int l)
+{
+	zlog_level_t *a_level;
+
+#if 0
+	if ((l <= 0) || (l > 254)) {
+		/* illegal input from zlog() */
+		zc_error("l[%d] not in (0,254), set to UNKOWN", l);
+		l = 254;
+	}
+#endif
+
+	a_level = zc_arraylist_get(levels, l);
+	if (a_level) {
+		return a_level;
+	} else {
+		/* empty slot */
+		zc_error("l[%d] not in (0,254), or has no level defined,"
+			"see configure file define, set to UNKOWN", l);
+		return zc_arraylist_get(levels, 254);
+	}
+}
+
+/*******************************************************************************/
+
+int zlog_level_list_atoi(zc_arraylist_t *levels, char *str)
+{
+	int i;
+	zlog_level_t *a_level;
+
+	if (str == NULL || *str == '\0') {
+		zc_error("str is [%s], can't find level", str);
+		return -1;
+	}
+
+	zc_arraylist_foreach(levels, i, a_level) {
+		if (a_level && STRICMP(str, ==, a_level->str_uppercase)) {
+			return i;
+		}
+	}
+
+	zc_error("str[%s] can't found in level list", str);
+	return -1;
+}
+

zlog/src/level_list.h

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __zlog_level_list_h
+#define __zlog_level_list_h
+
+#include "zc_defs.h"
+#include "level.h"
+
+zc_arraylist_t *zlog_level_list_new(void);
+void zlog_level_list_del(zc_arraylist_t *levels);
+void zlog_level_list_profile(zc_arraylist_t *levels, int flag);
+
+/* conf init use, slow */
+/* if l is wrong or str=="", return -1 */
+int zlog_level_list_set(zc_arraylist_t *levels, char *line);
+
+/* spec output use, fast */
+/* rule output use, fast */
+/* if not found, return levels[254] */
+zlog_level_t *zlog_level_list_get(zc_arraylist_t *levels, int l);
+
+/* rule init use, slow */
+/* if not found, return -1 */
+int zlog_level_list_atoi(zc_arraylist_t *levels, char *str);
+
+
+#endif

zlog/src/lockfile.c

+/**
+ * =============================================================================
+ *
+ * \file lockfile.c
+ * \breif
+ * \version 1.0
+ * \date 2013-07-07 11:55:38
+ * \author  Song min.Li (Li), lisongmin@126.com
+ * \copyright Copyright (c) 2013, skybility
+ *
+ * =============================================================================
+ */
+
+#include "lockfile.h"
+#include "zc_profile.h"
+
+LOCK_FD lock_file(char* path) {
+    if (!path || strlen(path) <= 0) {
+        return INVALID_LOCK_FD;
+    }
+#ifdef _WIN32
+    LOCK_FD fd = CreateFile(path, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
+    if (fd == INVALID_LOCK_FD) {
+        DWORD err = GetLastError();
+        zc_error("lock file error : %d ", err);
+    }
+#else
+    LOCK_FD fd = open(path, O_RDWR | O_CREAT, S_IRWXU | S_IRWXG | S_IRWXO);
+    if (fd == INVALID_LOCK_FD) {
+        zc_error("lock file error : %s ", strerror(errno));
+    }
+#endif
+    return fd;
+}
+
+bool unlock_file(LOCK_FD fd) {
+    if (fd == INVALID_LOCK_FD) {
+        return true;
+    }
+#ifdef _WIN32
+    bool ret = CloseHandle(fd);
+    if (ret == false) {
+        DWORD err = GetLastError();
+        zc_error("unlock file error : %d ", err);
+    }
+#else
+    bool ret = close(fd) == 0;
+    if (ret == false) {
+        zc_error("unlock file error : %s ", strerror(errno));
+    }
+#endif
+    return ret;
+}

zlog/src/lockfile.h

+/**
+ * =============================================================================
+ *
+ * \file lockfile.h
+ * \breif
+ * \version 1.0
+ * \date 2013-07-07 12:34:20
+ * \author  Song min.Li (Li), lisongmin@126.com
+ * \copyright Copyright (c) 2013, skybility
+ *
+ * =============================================================================
+ */
+
+#ifndef __ZLOG_LOCK_FILE_H__
+#define __ZLOG_LOCK_FILE_H__
+
+#ifdef _WIN32
+#include <Windows.h>
+#include <WinBase.h>
+#define LOCK_FD         HANDLE
+#define INVALID_LOCK_FD INVALID_HANDLE_VALUE
+#else //_WIN32
+#include <string.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#define LOCK_FD         int
+#define INVALID_LOCK_FD -1
+#endif
+#include <stdbool.h>
+
+/**
+ * lock file.
+ */
+LOCK_FD lock_file(char* path);
+
+/**
+ * unlock file.
+ */
+bool unlock_file(LOCK_FD fd);
+
+#endif //__ZLOG_LOCK_FILE_H__

zlog/src/mdc.c

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+
+#include "mdc.h"
+#include "zc_defs.h"
+
+void zlog_mdc_profile(zlog_mdc_t *a_mdc, int flag)
+{
+	zc_hashtable_entry_t *a_entry;
+	zlog_mdc_kv_t *a_mdc_kv;
+
+	zc_assert(a_mdc,);
+	zc_profile(flag, "---mdc[%p]---", a_mdc);
+
+	zc_hashtable_foreach(a_mdc->tab, a_entry) {
+		a_mdc_kv = a_entry->value;
+		zc_profile(flag, "----mdc_kv[%p][%s]-[%s]----",
+				a_mdc_kv,
+				a_mdc_kv->key, a_mdc_kv->value);
+	}
+	return;
+}
+/*******************************************************************************/
+void zlog_mdc_del(zlog_mdc_t * a_mdc)
+{
+	zc_assert(a_mdc,);
+	if (a_mdc->tab) zc_hashtable_del(a_mdc->tab);
+	zc_debug("zlog_mdc_del[%p]", a_mdc);
+    free(a_mdc);
+	return;
+}
+
+static void zlog_mdc_kv_del(zlog_mdc_kv_t * a_mdc_kv)
+{
+	zc_debug("zlog_mdc_kv_del[%p]", a_mdc_kv);
+    free(a_mdc_kv);
+}
+
+static zlog_mdc_kv_t *zlog_mdc_kv_new(const char *key, const char *value)
+{
+	zlog_mdc_kv_t *a_mdc_kv;
+
+	a_mdc_kv = calloc(1, sizeof(zlog_mdc_kv_t));
+	if (!a_mdc_kv) {
+		zc_error("calloc fail, errno[%d]", errno);
+		return NULL;
+	}
+
+	snprintf(a_mdc_kv->key, sizeof(a_mdc_kv->key), "%s", key);
+	a_mdc_kv->value_len = snprintf(a_mdc_kv->value, sizeof(a_mdc_kv->value), "%s", value);
+	return a_mdc_kv;
+}
+
+zlog_mdc_t *zlog_mdc_new(void)
+{
+	zlog_mdc_t *a_mdc;
+
+	a_mdc = calloc(1, sizeof(zlog_mdc_t));
+	if (!a_mdc) {
+		zc_error("calloc fail, errno[%d]", errno);
+		return NULL;
+	}
+
+	a_mdc->tab = zc_hashtable_new(20,
+			      zc_hashtable_str_hash,
+			      zc_hashtable_str_equal, NULL,
+			      (zc_hashtable_del_fn) zlog_mdc_kv_del);
+	if (!a_mdc->tab) {
+		zc_error("zc_hashtable_new fail");
+		goto err;
+	}
+
+	//zlog_mdc_profile(a_mdc, ZC_DEBUG);
+	return a_mdc;
+err:
+	zlog_mdc_del(a_mdc);
+	return NULL;
+}
+
+/*******************************************************************************/
+int zlog_mdc_put(zlog_mdc_t * a_mdc, const char *key, const char *value)
+{
+	zlog_mdc_kv_t *a_mdc_kv;
+
+	a_mdc_kv = zlog_mdc_kv_new(key, value);
+	if (!a_mdc_kv) {
+		zc_error("zlog_mdc_kv_new failed");
+		return -1;
+	}
+
+	if (zc_hashtable_put(a_mdc->tab, a_mdc_kv->key, a_mdc_kv)) {
+		zc_error("zc_hashtable_put fail");
+		zlog_mdc_kv_del(a_mdc_kv);
+		return -1;
+	}
+
+	return 0;
+}
+
+void zlog_mdc_clean(zlog_mdc_t * a_mdc)
+{
+	zc_hashtable_clean(a_mdc->tab);
+	return;
+}
+
+char *zlog_mdc_get(zlog_mdc_t * a_mdc, const char *key)
+{
+	zlog_mdc_kv_t *a_mdc_kv;
+
+	a_mdc_kv = zc_hashtable_get(a_mdc->tab, key);
+	if (!a_mdc_kv) {
+		zc_error("zc_hashtable_get fail");
+		return NULL;
+	} else {
+		return a_mdc_kv->value;
+	}
+}
+
+zlog_mdc_kv_t *zlog_mdc_get_kv(zlog_mdc_t * a_mdc, const char *key)
+{
+	zlog_mdc_kv_t *a_mdc_kv;
+
+	a_mdc_kv = zc_hashtable_get(a_mdc->tab, key);
+	if (!a_mdc_kv) {
+		zc_error("zc_hashtable_get fail");
+		return NULL;
+	} else {
+		return a_mdc_kv;
+	}
+}
+
+void zlog_mdc_remove(zlog_mdc_t * a_mdc, const char *key)
+{
+	zc_hashtable_remove(a_mdc->tab, key);
+	return;
+}

zlog/src/mdc.h

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __zlog_mdc_h
+#define __zlog_mdc_h
+
+#include "zc_defs.h"
+
+typedef struct zlog_mdc_s zlog_mdc_t;
+struct zlog_mdc_s {
+	zc_hashtable_t *tab;
+};
+
+zlog_mdc_t *zlog_mdc_new(void);
+void zlog_mdc_del(zlog_mdc_t * a_mdc);
+void zlog_mdc_profile(zlog_mdc_t *a_mdc, int flag);
+
+void zlog_mdc_clean(zlog_mdc_t * a_mdc);
+int zlog_mdc_put(zlog_mdc_t * a_mdc, const char *key, const char *value);
+char *zlog_mdc_get(zlog_mdc_t * a_mdc, const char *key);
+void zlog_mdc_remove(zlog_mdc_t * a_mdc, const char *key);
+
+typedef struct zlog_mdc_kv_s {
+	char key[MAXLEN_PATH + 1];
+	char value[MAXLEN_PATH + 1];
+	size_t value_len;
+} zlog_mdc_kv_t;
+
+zlog_mdc_kv_t *zlog_mdc_get_kv(zlog_mdc_t * a_mdc, const char *key);
+
+#endif

zlog/src/record.c

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "errno.h"
+#include "zc_defs.h"
+#include "record.h"
+
+void zlog_record_profile(zlog_record_t *a_record, int flag)
+{
+	zc_assert(a_record,);
+	zc_profile(flag, "--record:[%p][%s:%p]--", a_record, a_record->name,  a_record->output);
+	return;
+}
+
+void zlog_record_del(zlog_record_t *a_record)
+{
+	zc_assert(a_record,);
+	zc_debug("zlog_record_del[%p]", a_record);
+    free(a_record);
+	return;
+}
+
+zlog_record_t *zlog_record_new(const char *name, zlog_record_fn output)
+{
+	zlog_record_t *a_record;
+
+	zc_assert(name, NULL);
+	zc_assert(output, NULL);
+
+	a_record = calloc(1, sizeof(zlog_record_t));
+	if (!a_record) {
+		zc_error("calloc fail, errno[%d]", errno);
+		return NULL;
+	}
+
+	if (strlen(name) > sizeof(a_record->name) - 1) {
+		zc_error("name[%s] is too long", name);
+		goto err;
+	}
+
+	strcpy(a_record->name, name);
+	a_record->output = output;
+
+	zlog_record_profile(a_record, ZC_DEBUG);
+	return a_record;
+err:
+	zlog_record_del(a_record);
+	return NULL;
+}

zlog/src/record.h

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __zlog_record_h
+#define __zlog_record_h
+
+#include "zc_defs.h"
+
+/* record is user-defined output function and it's name from configure file */
+typedef struct zlog_msg_s {
+	char *buf;
+	size_t len;
+	char *path;
+} zlog_msg_t; /* 3 of this first, see need thread or not later */
+
+typedef int (*zlog_record_fn)(zlog_msg_t * msg);
+
+typedef struct zlog_record_s {
+	char name[MAXLEN_PATH + 1];
+	zlog_record_fn output;
+} zlog_record_t;
+
+zlog_record_t *zlog_record_new(const char *name, zlog_record_fn output);
+void zlog_record_del(zlog_record_t *a_record);
+void zlog_record_profile(zlog_record_t *a_record, int flag);
+
+#endif

zlog/src/record_table.c

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#include "zc_defs.h"
+#include "record_table.h"
+
+void zlog_record_table_profile(zc_hashtable_t * records, int flag)
+{
+	zc_hashtable_entry_t *a_entry;
+	zlog_record_t *a_record;
+
+	zc_assert(records,);
+	zc_profile(flag, "-record_table[%p]-", records);
+	zc_hashtable_foreach(records, a_entry) {
+		a_record = (zlog_record_t *) a_entry->value;
+		zlog_record_profile(a_record, flag);
+	}
+	return;
+}
+
+/*******************************************************************************/
+
+void zlog_record_table_del(zc_hashtable_t * records)
+{
+	zc_assert(records,);
+	zc_hashtable_del(records);
+	zc_debug("zlog_record_table_del[%p]", records);
+	return;
+}
+
+zc_hashtable_t *zlog_record_table_new(void)
+{
+	zc_hashtable_t *records;
+
+	records = zc_hashtable_new(20,
+			 (zc_hashtable_hash_fn) zc_hashtable_str_hash,
+			 (zc_hashtable_equal_fn) zc_hashtable_str_equal,
+			 NULL, (zc_hashtable_del_fn) zlog_record_del);
+	if (!records) {
+		zc_error("zc_hashtable_new fail");
+		return NULL;
+	} else {
+		zlog_record_table_profile(records, ZC_DEBUG);
+		return records;
+	}
+}
+/*******************************************************************************/

zlog/src/record_table.h

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __zlog_record_table_h
+#define __zlog_record_table_h
+
+#include "zc_defs.h"
+#include "record.h"
+
+zc_hashtable_t *zlog_record_table_new(void);
+void zlog_record_table_del(zc_hashtable_t * records);
+void zlog_record_table_profile(zc_hashtable_t * records, int flag);
+
+#endif

zlog/src/rotater.c

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <string.h>
+
+#ifdef _WIN32
+#include <unixem/glob.h>
+#endif
+#include <glob.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <pthread.h>
+
+#include "zc_defs.h"
+#include "rotater.h"
+
+#define ROLLING  1     /* aa.02->aa.03, aa.01->aa.02, aa->aa.01 */
+#define SEQUENCE 2     /* aa->aa.03 */
+
+typedef struct {
+	int index;
+	char path[MAXLEN_PATH + 1];
+} zlog_file_t;
+
+void zlog_rotater_profile(zlog_rotater_t * a_rotater, int flag)
+{
+	zc_assert(a_rotater,);
+	zc_profile(flag, "--rotater[%p][%p,%s,%d][%s,%s,%s,%ld,%ld,%d,%d,%d]--",
+		a_rotater,
+
+		&(a_rotater->lock_mutex),
+		a_rotater->lock_file,
+		a_rotater->lock_fd,
+
+		a_rotater->base_path,
+		a_rotater->archive_path,
+		a_rotater->glob_path,
+		(long)a_rotater->num_start_len,
+		(long)a_rotater->num_end_len,
+		a_rotater->num_width,
+		a_rotater->mv_type,
+		a_rotater->max_count
+		);
+	if (a_rotater->files) {
+		int i;
+		zlog_file_t *a_file;
+		zc_arraylist_foreach(a_rotater->files, i, a_file) {
+			zc_profile(flag, "[%s,%d]->", a_file->path, a_file->index);
+		}
+	}
+	return;
+}
+
+/*******************************************************************************/
+void zlog_rotater_del(zlog_rotater_t *a_rotater)
+{
+	zc_assert(a_rotater,);
+
+	if (a_rotater->lock_fd != INVALID_LOCK_FD) {
+		if (!unlock_file(a_rotater->lock_fd)) {
+			zc_error("close fail, errno[%d]", errno);
+		}
+        a_rotater->lock_fd = INVALID_LOCK_FD;
+	}
+
+	if (pthread_mutex_destroy(&(a_rotater->lock_mutex))) {
+		zc_error("pthread_mutex_destroy fail, errno[%d]", errno);
+	}
+
+	zc_debug("zlog_rotater_del[%p]", a_rotater);
+    free(a_rotater);
+	return;
+}
+
+zlog_rotater_t *zlog_rotater_new(char *lock_file)
+{
+	zlog_rotater_t *a_rotater;
+
+	zc_assert(lock_file, NULL);
+
+	a_rotater = calloc(1, sizeof(zlog_rotater_t));
+	if (!a_rotater) {
+		zc_error("calloc fail, errno[%d]", errno);
+		return NULL;
+	}
+
+	if (pthread_mutex_init(&(a_rotater->lock_mutex), NULL)) {
+		zc_error("pthread_mutex_init fail, errno[%d]", errno);
+		free(a_rotater);
+		return NULL;
+	}
+
+	a_rotater->lock_fd = INVALID_LOCK_FD;
+	a_rotater->lock_file = lock_file;
+
+	//zlog_rotater_profile(a_rotater, ZC_DEBUG);
+	return a_rotater;
+
+	zlog_rotater_del(a_rotater);
+	return NULL;
+}
+
+/*******************************************************************************/
+
+static void zlog_file_del(zlog_file_t * a_file)
+{
+	zc_debug("del onefile[%p]", a_file);
+	zc_debug("a_file->path[%s]", a_file->path);
+	free(a_file);
+}
+
+static zlog_file_t *zlog_file_check_new(zlog_rotater_t * a_rotater, const char *path)
+{
+	int nwrite;
+	int nread;
+	zlog_file_t *a_file;
+
+	/* base_path will not be in list */
+	if (STRCMP(a_rotater->base_path, ==, path)) {
+		return NULL;
+	}
+
+	/* omit dirs */
+	if ((path)[strlen(path) - 1] == '/') {
+		return NULL;
+	}
+
+	a_file = calloc(1, sizeof(zlog_file_t));
+	if (!a_file) {
+		zc_error("calloc fail, errno[%d]", errno);
+		return NULL;
+	}
+
+	nwrite = snprintf(a_file->path, sizeof(a_file->path), "%s", path);
+	if (nwrite < 0 || nwrite >= sizeof(a_file->path)) {
+		zc_error("snprintf fail or overflow, nwrite=[%d], errno[%d]", nwrite, errno);
+		goto err;
+	}
+
+	nread = 0;
+	sscanf(a_file->path + a_rotater->num_start_len, "%d%n", &(a_file->index), &(nread));
+
+	if (a_rotater->num_width != 0) {
+		if (nread < a_rotater->num_width) {
+			zc_warn("aa.1.log is not expect, need aa.01.log");
+			goto err;
+		}
+	} /* else all file is ok */
+
+	return a_file;
+err:
+	free(a_file);
+	return NULL;
+}
+
+
+static int zlog_file_cmp(zlog_file_t * a_file_1, zlog_file_t * a_file_2)
+{
+	return (a_file_1->index > a_file_2->index);
+}
+
+static int zlog_rotater_add_archive_files(zlog_rotater_t * a_rotater)
+{
+	int rc = 0;
+	glob_t glob_buf;
+	size_t pathc;
+	char **pathv;
+	zlog_file_t *a_file;
+
+	a_rotater->files = zc_arraylist_new((zc_arraylist_del_fn)zlog_file_del);
+	if (!a_rotater->files) {
+		zc_error("zc_arraylist_new fail");
+		return -1;
+	}
+
+	/* scan file which is aa.*.log and aa */
+	rc = glob(a_rotater->glob_path, GLOB_ERR | GLOB_MARK | GLOB_NOSORT, NULL, &glob_buf);
+	if (rc == GLOB_NOMATCH) {
+		goto exit;
+	} else if (rc) {
+		zc_error("glob err, rc=[%d], errno[%d]", rc, errno);
+		return -1;
+	}
+
+	pathv = glob_buf.gl_pathv;
+	pathc = glob_buf.gl_pathc;
+
+	/* check and find match aa.[0-9]*.log, depend on num_width */
+	for (; pathc-- > 0; pathv++) {
+		a_file = zlog_file_check_new(a_rotater, *pathv);
+		if (!a_file) {
+			zc_warn("not the expect pattern file");
+			continue;
+		}
+
+		/* file in list aa.00, aa.01, aa.02... */
+		rc = zc_arraylist_sortadd(a_rotater->files,
+					(zc_arraylist_cmp_fn)zlog_file_cmp, a_file);
+		if (rc) {
+			zc_error("zc_arraylist_sortadd fail");
+			goto err;
+		}
+	}
+
+exit:
+	globfree(&glob_buf);
+	return 0;
+err:
+	globfree(&glob_buf);
+	return -1;
+}
+
+static int zlog_rotater_seq_files(zlog_rotater_t * a_rotater)
+{
+	int rc = 0;
+	int nwrite = 0;
+	int i, j;
+	zlog_file_t *a_file;
+	char new_path[MAXLEN_PATH + 1];
+
+	zc_arraylist_foreach(a_rotater->files, i, a_file) {
+		if (a_rotater->max_count > 0 
+			&& i < zc_arraylist_len(a_rotater->files) - a_rotater->max_count) {
+			/* unlink aa.0 aa.1 .. aa.(n-c) */
+			rc = unlink(a_file->path);
+			if (rc) {
+				zc_error("unlink[%s] fail, errno[%d]",a_file->path , errno);
+				return -1;
+			}
+			continue;
+		}
+	}
+
+	if (zc_arraylist_len(a_rotater->files) > 0) { /* list is not empty */
+		a_file = zc_arraylist_get(a_rotater->files, zc_arraylist_len(a_rotater->files)-1);
+		if (!a_file) {
+			zc_error("zc_arraylist_get fail");
+			return -1;
+		}
+
+		j = zc_max(zc_arraylist_len(a_rotater->files)-1, a_file->index) + 1;
+	} else {
+		j = 0;
+	}
+
+	/* do the base_path mv  */
+	memset(new_path, 0x00, sizeof(new_path));
+	nwrite = snprintf(new_path, sizeof(new_path), "%.*s%0*d%s",
+		(int) a_rotater->num_start_len, a_rotater->glob_path, 
+		a_rotater->num_width, j,
+		a_rotater->glob_path + a_rotater->num_end_len);
+	if (nwrite < 0 || nwrite >= sizeof(new_path)) {
+		zc_error("nwirte[%d], overflow or errno[%d]", nwrite, errno);
+		return -1;
+	}
+
+	if (rename(a_rotater->base_path, new_path)) {
+		zc_error("rename[%s]->[%s] fail, errno[%d]", a_rotater->base_path, new_path, errno);
+		return -1;
+	}
+
+	return 0;
+}
+
+
+static int zlog_rotater_roll_files(zlog_rotater_t * a_rotater)
+{
+	int i;
+	int rc = 0;
+	int nwrite;
+	char new_path[MAXLEN_PATH + 1];
+	zlog_file_t *a_file;
+
+	/* now in the list, aa.0 aa.1 aa.2 aa.02... */
+	for (i = zc_arraylist_len(a_rotater->files) - 1; i > -1; i--) {
+		a_file = zc_arraylist_get(a_rotater->files, i);
+		if (!a_file) {
+			zc_error("zc_arraylist_get fail");
+			return -1;
+		}
+
+		if (a_rotater->max_count > 0 && i >= a_rotater->max_count - 1) {
+			/* remove file.3 >= 3*/
+			rc = unlink(a_file->path);
+			if (rc) {
+				zc_error("unlink[%s] fail, errno[%d]",a_file->path , errno);
+				return -1;
+			}
+			continue;
+		}
+
+		/* begin rename aa.01.log -> aa.02.log , using i, as index in list maybe repeat */
+		memset(new_path, 0x00, sizeof(new_path));
+		nwrite = snprintf(new_path, sizeof(new_path), "%.*s%0*d%s",
+			(int) a_rotater->num_start_len, a_rotater->glob_path, 
+			a_rotater->num_width, i + 1,
+			a_rotater->glob_path + a_rotater->num_end_len);
+		if (nwrite < 0 || nwrite >= sizeof(new_path)) {
+			zc_error("nwirte[%d], overflow or errno[%d]", nwrite, errno);
+			return -1;
+		}
+
+		if (rename(a_file->path, new_path)) {
+			zc_error("rename[%s]->[%s] fail, errno[%d]", a_file->path, new_path, errno);
+			return -1;
+		}
+	}
+
+	/* do the base_path mv  */
+	memset(new_path, 0x00, sizeof(new_path));
+	nwrite = snprintf(new_path, sizeof(new_path), "%.*s%0*d%s",
+		(int) a_rotater->num_start_len, a_rotater->glob_path, 
+		a_rotater->num_width, 0,
+		a_rotater->glob_path + a_rotater->num_end_len);
+	if (nwrite < 0 || nwrite >= sizeof(new_path)) {
+		zc_error("nwirte[%d], overflow or errno[%d]", nwrite, errno);
+		return -1;
+	}
+
+	if (rename(a_rotater->base_path, new_path)) {
+		zc_error("rename[%s]->[%s] fail, errno[%d]", a_rotater->base_path, new_path, errno);
+		return -1;
+	}
+
+	return 0;
+}
+
+
+static int zlog_rotater_parse_archive_path(zlog_rotater_t * a_rotater)
+{
+	int nwrite;
+	int nread;
+	char *p;
+	size_t len;
+
+	/* no archive path is set */
+	if (a_rotater->archive_path[0] == '\0') {
+		nwrite = snprintf(a_rotater->glob_path, sizeof(a_rotater->glob_path),
+					"%s.*", a_rotater->base_path);
+		if (nwrite < 0 || nwrite > sizeof(a_rotater->glob_path)) {
+			zc_error("nwirte[%d], overflow or errno[%d]", nwrite, errno);
+			return -1;
+		}
+
+		a_rotater->mv_type = ROLLING;
+		a_rotater->num_width = 0;
+		a_rotater->num_start_len = strlen(a_rotater->base_path) + 1;
+		a_rotater->num_end_len = strlen(a_rotater->base_path) + 2;
+		return 0;
+	} else {
+
+		/* find the 1st # */
+		p = strchr(a_rotater->archive_path, '#');
+		if (!p) {
+			zc_error("no # in archive_path[%s]", a_rotater->archive_path);
+			return -1;
+		}
+
+		nread = 0;
+		sscanf(p, "#%d%n", &(a_rotater->num_width), &nread);
+		if (nread == 0) nread = 1;
+		if (*(p+nread) == 'r') {
+			a_rotater->mv_type = ROLLING;
+		} else if (*(p+nread) == 's') {
+			a_rotater->mv_type = SEQUENCE;
+		} else {
+			zc_error("#r or #s not found");
+			return -1;
+		}
+
+		/* copy and substitue #i to * in glob_path*/
+		len = p - a_rotater->archive_path;
+		if (len > sizeof(a_rotater->glob_path) - 1) {
+			zc_error("sizeof glob_path not enough,len[%ld]", (long) len);
+			return -1;
+		}
+		memcpy(a_rotater->glob_path, a_rotater->archive_path, len);
+
+		nwrite = snprintf(a_rotater->glob_path + len, sizeof(a_rotater->glob_path) - len,
+				"*%s", p + nread + 1);
+		if (nwrite < 0 || nwrite > sizeof(a_rotater->glob_path) - len) {
+			zc_error("nwirte[%d], overflow or errno[%d]", nwrite, errno);
+			return -1;
+		}
+
+		a_rotater->num_start_len = len;
+		a_rotater->num_end_len = len + 1;
+	}
+	
+	return 0;
+}
+
+static void zlog_rotater_clean(zlog_rotater_t *a_rotater)
+{
+	a_rotater->base_path = NULL;
+	a_rotater->archive_path = NULL;
+	a_rotater->max_count = 0;
+	a_rotater->mv_type = 0;
+	a_rotater->num_width = 0;
+	a_rotater->num_start_len = 0;
+	a_rotater->num_end_len = 0;
+	memset(a_rotater->glob_path, 0x00, sizeof(a_rotater->glob_path));
+
+	if (a_rotater->files) zc_arraylist_del(a_rotater->files);
+	a_rotater->files = NULL;
+}
+
+static int zlog_rotater_lsmv(zlog_rotater_t *a_rotater, 
+		char *base_path, char *archive_path, int archive_max_count)
+{
+	int rc = 0;
+
+	a_rotater->base_path = base_path;
+	a_rotater->archive_path = archive_path;
+	a_rotater->max_count = archive_max_count;
+	rc = zlog_rotater_parse_archive_path(a_rotater);
+	if (rc) {
+		zc_error("zlog_rotater_parse_archive_path fail");
+		goto err;
+	}
+
+	rc = zlog_rotater_add_archive_files(a_rotater);
+	if (rc) {
+		zc_error("zlog_rotater_add_archive_files fail");
+		goto err;
+	}
+
+	if (a_rotater->mv_type == ROLLING) {
+		rc = zlog_rotater_roll_files(a_rotater);
+		if (rc) {
+			zc_error("zlog_rotater_roll_files fail");
+			goto err;
+		}
+	} else if (a_rotater->mv_type == SEQUENCE) {
+		rc = zlog_rotater_seq_files(a_rotater);
+		if (rc) {
+			zc_error("zlog_rotater_seq_files fail");
+			goto err;
+		}
+	}
+
+	zlog_rotater_clean(a_rotater);
+	return 0;
+err:
+	zlog_rotater_clean(a_rotater);
+	return -1;
+}
+/*******************************************************************************/
+
+static int zlog_rotater_trylock(zlog_rotater_t *a_rotater)
+{
+	int rc;
+
+	rc = pthread_mutex_trylock(&(a_rotater->lock_mutex));
+	if (rc == EBUSY) {
+		zc_warn("pthread_mutex_trylock fail, as lock_mutex is locked by other threads");
+		return -1;
+	} else if (rc != 0) {
+		zc_error("pthread_mutex_trylock fail, rc[%d]", rc);
+		return -1;
+	}
+
+    a_rotater->lock_fd = lock_file(a_rotater->lock_file);
+	if (a_rotater->lock_fd == INVALID_LOCK_FD) {
+		return -1;
+	}
+
+	return 0;
+}
+
+static int zlog_rotater_unlock(zlog_rotater_t *a_rotater)
+{
+	int rc = 0;
+
+    if (!unlock_file(a_rotater->lock_fd)) {
+		rc = -1;
+	} else {
+        a_rotater->lock_fd = INVALID_LOCK_FD;
+    }
+
+	if (pthread_mutex_unlock(&(a_rotater->lock_mutex))) {
+		rc = -1;
+		zc_error("pthread_mutext_unlock fail, errno[%d]", errno);
+	}
+
+	return rc;
+}
+
+int zlog_rotater_rotate(zlog_rotater_t *a_rotater,
+		char *base_path, size_t msg_len,
+		char *archive_path, long archive_max_size, int archive_max_count)
+{
+	int rc = 0;
+	struct zlog_stat info;
+
+	zc_assert(base_path, -1);
+
+	if (zlog_rotater_trylock(a_rotater)) {
+		zc_warn("zlog_rotater_trylock fail, maybe lock by other process or threads");
+		return 0;
+	}
+
+	if (stat(base_path, &info)) {
+		rc = -1;
+		zc_error("stat [%s] fail, errno[%d]", base_path, errno);
+		goto exit;
+	}
+
+	if (info.st_size + msg_len <= archive_max_size) {
+		/* file not so big,
+		 * may alread rotate by oth process or thread,
+		 * return */
+		rc = 0;
+		goto exit;
+	}
+
+	/* begin list and move files */
+	rc = zlog_rotater_lsmv(a_rotater, base_path, archive_path, archive_max_count);
+	if (rc) {
+		zc_error("zlog_rotater_lsmv [%s] fail, return", base_path);
+		rc = -1;
+	} /* else if (rc == 0) */
+
+	//zc_debug("zlog_rotater_file_ls_mv success");
+
+exit:
+	/* unlock file */
+	if (zlog_rotater_unlock(a_rotater)) {
+		zc_error("zlog_rotater_unlock fail");
+	}
+
+	return rc;
+}
+
+/*******************************************************************************/

zlog/src/rotater.h

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __zlog_rotater_h
+#define __zlog_rotater_h
+
+#include "zc_defs.h"
+#include "lockfile.h"
+
+typedef struct zlog_rotater_s {
+	pthread_mutex_t lock_mutex;
+	char *lock_file;
+	LOCK_FD lock_fd;
+
+	/* single-use members */
+	char *base_path;			/* aa.log */
+	char *archive_path;			/* aa.#5i.log */
+	char glob_path[MAXLEN_PATH + 1];	/* aa.*.log */
+	size_t num_start_len;			/* 3, offset to glob_path */
+	size_t num_end_len;			/* 6, offset to glob_path */
+	int num_width;				/* 5 */
+	int mv_type;				/* ROLLING or SEQUENCE */
+	int max_count;
+	zc_arraylist_t *files;
+} zlog_rotater_t;
+
+zlog_rotater_t *zlog_rotater_new(char *lock_file);
+void zlog_rotater_del(zlog_rotater_t *a_rotater);
+
+/*
+ * return
+ * -1	fail
+ * 0	no rotate, or rotate and success
+ */
+int zlog_rotater_rotate(zlog_rotater_t *a_rotater,
+		char *base_path, size_t msg_len,
+		char *archive_path, long archive_max_size, int archive_max_count);
+
+void zlog_rotater_profile(zlog_rotater_t *a_rotater, int flag);
+
+#endif

zlog/src/rule.c

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "fmacros.h"
+
+#include <string.h>
+#include <ctype.h>
+#ifndef _WIN32
+#include <syslog.h>
+#else
+#include "zlog_win.h"
+#endif
+#include <errno.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <pthread.h>
+
+#include "rule.h"
+#include "format.h"
+#include "buf.h"
+#include "thread.h"
+#include "level_list.h"
+#include "rotater.h"
+#include "spec.h"
+#include "conf.h"
+
+#include "zc_defs.h"
+
+
+void zlog_rule_profile(zlog_rule_t * a_rule, int flag)
+{
+	int i;
+	zlog_spec_t *a_spec;
+
+	zc_assert(a_rule,);
+	zc_profile(flag, "---rule:[%p][%s%c%d]-[%d,%d][%s,%p,%d:%ld*%d~%s][%d][%d][%s:%s:%p];[%p]---",
+		a_rule,
+
+		a_rule->category,
+		a_rule->compare_char,
+		a_rule->level,
+
+		a_rule->file_perms,
+		a_rule->file_open_flags,
+
+		a_rule->file_path,
+		a_rule->dynamic_specs,
+		a_rule->static_fd,
+
+		a_rule->archive_max_size,
+		a_rule->archive_max_count,
+		a_rule->archive_path,
+
+		a_rule->pipe_fd,
+
+		a_rule->syslog_facility,
+
+		a_rule->record_name,
+		a_rule->record_path,
+		a_rule->record_func,
+		a_rule->format);
+
+	if (a_rule->dynamic_specs) {
+		zc_arraylist_foreach(a_rule->dynamic_specs, i, a_spec) {
+			zlog_spec_profile(a_spec, flag);
+		}
+	}
+	return;
+}
+
+/*******************************************************************************/
+
+static int zlog_rule_output_static_file_single(zlog_rule_t * a_rule, zlog_thread_t * a_thread)
+{
+	struct stat stb;
+	int do_file_reload = 0;
+	int redo_inode_stat = 0;
+
+	if (zlog_format_gen_msg(a_rule->format, a_thread)) {
+		zc_error("zlog_format_gen_msg fail");
+		return -1;
+	}
+
+	/* check if the output file was changed by an external tool by comparing the inode to our saved off one */
+	if (stat(a_rule->file_path, &stb)) {
+		if (errno != ENOENT) {
+			zc_error("stat fail on [%s], errno[%d]", a_rule->file_path, errno);
+			return -1;
+		} else {
+			do_file_reload = 1;
+			redo_inode_stat = 1; /* we'll have to restat the newly created file to get the inode info */
+		}
+	} else {
+		do_file_reload = (stb.st_ino != a_rule->static_ino || stb.st_dev != a_rule->static_dev);
+	}
+
+	if (do_file_reload) {
+		close(a_rule->static_fd);
+		a_rule->static_fd = open(a_rule->file_path,
+			O_WRONLY | O_APPEND | O_CREAT | a_rule->file_open_flags,
+			a_rule->file_perms);
+		if (a_rule->static_fd < 0) {
+			zc_error("open file[%s] fail, errno[%d]", a_rule->file_path, errno);
+			return -1;
+		}
+
+		/* save off the new dev/inode info from the stat call we already did */
+		if (redo_inode_stat) {
+			if (stat(a_rule->file_path, &stb)) {
+				zc_error("stat fail on new file[%s], errno[%d]", a_rule->file_path, errno);
+				return -1;
+			}
+		}
+		a_rule->static_dev = stb.st_dev;
+		a_rule->static_ino = stb.st_ino;
+	}
+
+	if (write(a_rule->static_fd,
+			zlog_buf_str(a_thread->msg_buf),
+			zlog_buf_len(a_thread->msg_buf)) < 0) {
+		zc_error("write fail, errno[%d]", errno);
+		return -1;
+	}
+
+	/* not so thread safe here, as multiple thread may ++fsync_count at the same time */
+	if (a_rule->fsync_period && ++a_rule->fsync_count >= a_rule->fsync_period) {
+		a_rule->fsync_count = 0;
+		if (fsync(a_rule->static_fd)) {
+			zc_error("fsync[%d] fail, errno[%d]", a_rule->static_fd, errno);
+		}
+	}
+
+	return 0;
+}
+
+static char * zlog_rule_gen_archive_path(zlog_rule_t *a_rule, zlog_thread_t *a_thread)
+{
+	int i;
+	zlog_spec_t *a_spec;
+
+	if (!a_rule->archive_specs) return a_rule->archive_path;
+
+	zlog_buf_restart(a_thread->archive_path_buf);
+
+	zc_arraylist_foreach(a_rule->archive_specs, i, a_spec) {
+		if (zlog_spec_gen_archive_path(a_spec, a_thread)) {
+			zc_error("zlog_spec_gen_path fail");
+			return NULL;
+		}
+	}
+
+	zlog_buf_seal(a_thread->archive_path_buf);
+	return zlog_buf_str(a_thread->archive_path_buf);
+}
+
+static int zlog_rule_output_static_file_rotate(zlog_rule_t * a_rule, zlog_thread_t * a_thread)
+{
+	size_t len;
+	struct zlog_stat info;
+	int fd;
+
+	if (zlog_format_gen_msg(a_rule->format, a_thread)) {
+		zc_error("zlog_format_gen_msg fail");
+		return -1;
+	}
+
+	fd = open(a_rule->file_path, 
+		a_rule->file_open_flags | O_WRONLY | O_APPEND | O_CREAT, a_rule->file_perms);
+	if (fd < 0) {
+		zc_error("open file[%s] fail, errno[%d]", a_rule->file_path, errno);
+		return -1;
+	}
+
+	len = zlog_buf_len(a_thread->msg_buf);
+	if (write(fd, zlog_buf_str(a_thread->msg_buf), len) < 0) {
+		zc_error("write fail, errno[%d]", errno);
+		close(fd);
+		return -1;
+	}
+
+	if (a_rule->fsync_period && ++a_rule->fsync_count >= a_rule->fsync_period) {
+		a_rule->fsync_count = 0;
+		if (fsync(fd)) zc_error("fsync[%d] fail, errno[%d]", fd, errno);
+	}
+
+	if (close(fd) < 0) {
+		zc_error("close fail, maybe cause by write, errno[%d]", errno);
+		return -1;
+	}
+
+	if (len > a_rule->archive_max_size) {
+		zc_debug("one msg's len[%ld] > archive_max_size[%ld], no rotate",
+			 (long)len, (long)a_rule->archive_max_size);
+		return 0;
+	}
+
+	if (stat(a_rule->file_path, &info)) {
+		zc_warn("stat [%s] fail, errno[%d], maybe in rotating", a_rule->file_path, errno);
+		return 0;
+	}
+
+	/* file not so big, return */
+	if (info.st_size + len < a_rule->archive_max_size) return 0;
+
+	if (zlog_rotater_rotate(zlog_env_conf->rotater, 
+		a_rule->file_path, len,
+		zlog_rule_gen_archive_path(a_rule, a_thread),
+		a_rule->archive_max_size, a_rule->archive_max_count)
+		) {
+		zc_error("zlog_rotater_rotate fail");
+		return -1;
+	} /* success or no rotation do nothing */
+
+	return 0;
+}
+
+/* return path	success
+ * return NULL	fail
+ */
+#define zlog_rule_gen_path(a_rule, a_thread) do {    \
+	int i;    \
+	zlog_spec_t *a_spec;    \
+    \
+	zlog_buf_restart(a_thread->path_buf);    \
+    \
+	zc_arraylist_foreach(a_rule->dynamic_specs, i, a_spec) {    \
+		if (zlog_spec_gen_path(a_spec, a_thread)) {    \
+			zc_error("zlog_spec_gen_path fail");    \
+			return -1;    \
+		}    \
+	}    \
+    \
+	zlog_buf_seal(a_thread->path_buf);    \
+} while(0)
+
+
+static int zlog_rule_output_dynamic_file_single(zlog_rule_t * a_rule, zlog_thread_t * a_thread)
+{
+	int fd;
+
+	zlog_rule_gen_path(a_rule, a_thread);
+
+	if (zlog_format_gen_msg(a_rule->format, a_thread)) {
+		zc_error("zlog_format_output fail");
+		return -1;
+	}
+
+	fd = open(zlog_buf_str(a_thread->path_buf),
+		a_rule->file_open_flags | O_WRONLY | O_APPEND | O_CREAT, a_rule->file_perms);
+	if (fd < 0) {
+		zc_error("open file[%s] fail, errno[%d]", zlog_buf_str(a_thread->path_buf), errno);
+		return -1;
+	}
+
+	if (write(fd, zlog_buf_str(a_thread->msg_buf), zlog_buf_len(a_thread->msg_buf)) < 0) {
+		zc_error("write fail, errno[%d]", errno);
+		close(fd);
+		return -1;
+	}
+
+	if (a_rule->fsync_period && ++a_rule->fsync_count >= a_rule->fsync_period) {
+		a_rule->fsync_count = 0;
+		if (fsync(fd)) zc_error("fsync[%d] fail, errno[%d]", fd, errno);
+	}
+
+	if (close(fd) < 0) {
+		zc_error("close fail, maybe cause by write, errno[%d]", errno);
+		return -1;
+	}
+
+	return 0;
+}
+
+static int zlog_rule_output_dynamic_file_rotate(zlog_rule_t * a_rule, zlog_thread_t * a_thread)
+{
+	int fd;
+	char *path;
+	size_t len;
+	struct zlog_stat info;
+
+	zlog_rule_gen_path(a_rule, a_thread);
+
+	if (zlog_format_gen_msg(a_rule->format, a_thread)) {
+		zc_error("zlog_format_output fail");
+		return -1;
+	}
+
+	path = zlog_buf_str(a_thread->path_buf);
+	fd = open(path, a_rule->file_open_flags | O_WRONLY | O_APPEND | O_CREAT, a_rule->file_perms);
+	if (fd < 0) {
+		zc_error("open file[%s] fail, errno[%d]", zlog_buf_str(a_thread->path_buf), errno);
+		return -1;
+	}
+
+	len = zlog_buf_len(a_thread->msg_buf);
+	if (write(fd, zlog_buf_str(a_thread->msg_buf), len) < 0) {
+		zc_error("write fail, errno[%d]", errno);
+		close(fd);
+		return -1;
+	}
+
+	if (a_rule->fsync_period && ++a_rule->fsync_count >= a_rule->fsync_period) {
+		a_rule->fsync_count = 0;
+		if (fsync(fd)) zc_error("fsync[%d] fail, errno[%d]", fd, errno);
+	}
+
+	if (close(fd) < 0) {
+		zc_error("write fail, maybe cause by write, errno[%d]", errno);
+		return -1;
+	}
+
+	if (len > a_rule->archive_max_size) {
+		zc_debug("one msg's len[%ld] > archive_max_size[%ld], no rotate",
+			 (long)len, (long) a_rule->archive_max_size);
+		return 0;
+	}
+
+	if (stat(path, &info)) {
+		zc_warn("stat [%s] fail, errno[%d], maybe in rotating", path, errno);
+		return 0;
+	}
+
+	/* file not so big, return */
+	if (info.st_size + len < a_rule->archive_max_size) return 0;
+
+	if (zlog_rotater_rotate(zlog_env_conf->rotater, 
+		path, len,
+		zlog_rule_gen_archive_path(a_rule, a_thread),
+		a_rule->archive_max_size, a_rule->archive_max_count)
+		) {
+		zc_error("zlog_rotater_rotate fail");
+		return -1;
+	} /* success or no rotation do nothing */
+
+	return 0;
+}
+
+static int zlog_rule_output_pipe(zlog_rule_t * a_rule, zlog_thread_t * a_thread)
+{
+	if (zlog_format_gen_msg(a_rule->format, a_thread)) {
+		zc_error("zlog_format_gen_msg fail");
+		return -1;
+	}
+
+	if (write(a_rule->pipe_fd,
+			zlog_buf_str(a_thread->msg_buf),
+			zlog_buf_len(a_thread->msg_buf)) < 0) {
+		zc_error("write fail, errno[%d]", errno);
+		return -1;
+	}
+
+	return 0;
+}
+
+static int zlog_rule_output_syslog(zlog_rule_t * a_rule, zlog_thread_t * a_thread)
+{
+#ifndef _WIN32
+	zlog_level_t *a_level;
+
+	if (zlog_format_gen_msg(a_rule->format, a_thread)) {
+		zc_error("zlog_format_gen_msg fail");
+		return -1;
+	}
+
+	/*
+	msg = a_thread->msg_buf->start;
+	msg_len = a_thread->msg_buf->end - a_thread->msg_buf->start;
+	 */
+
+	a_level = zlog_level_list_get(zlog_env_conf->levels, a_thread->event->level);
+	zlog_buf_seal(a_thread->msg_buf);
+	syslog(a_rule->syslog_facility | a_level->syslog_level,
+		"%s",  zlog_buf_str(a_thread->msg_buf));
+#endif
+	return 0;
+}
+
+static int zlog_rule_output_static_record(zlog_rule_t * a_rule, zlog_thread_t * a_thread)
+{
+	zlog_msg_t msg;
+
+	if (!a_rule->record_func) {
+		zc_error("user defined record funcion for [%s] not set, no output",
+			a_rule->record_name);
+		return -1;
+	}
+
+	if (zlog_format_gen_msg(a_rule->format, a_thread)) {
+		zc_error("zlog_format_gen_msg fail");
+		return -1;
+	}
+	zlog_buf_seal(a_thread->msg_buf);
+
+	msg.buf = zlog_buf_str(a_thread->msg_buf);
+	msg.len = zlog_buf_len(a_thread->msg_buf);
+	msg.path = a_rule->record_path;
+
+	if (a_rule->record_func(&msg)) {
+		zc_error("a_rule->record fail");
+		return -1;
+	}
+	return 0;
+}
+
+static int zlog_rule_output_dynamic_record(zlog_rule_t * a_rule, zlog_thread_t * a_thread)
+{
+	zlog_msg_t msg;
+
+	if (!a_rule->record_func) {
+		zc_error("user defined record funcion for [%s] not set, no output",
+			a_rule->record_name);
+		return -1;
+	}
+
+	zlog_rule_gen_path(a_rule, a_thread);
+
+	if (zlog_format_gen_msg(a_rule->format, a_thread)) {
+		zc_error("zlog_format_gen_msg fail");
+		return -1;
+	}
+	zlog_buf_seal(a_thread->msg_buf);
+
+	msg.buf = zlog_buf_str(a_thread->msg_buf);
+	msg.len = zlog_buf_len(a_thread->msg_buf);
+	msg.path = zlog_buf_str(a_thread->path_buf);
+
+	if (a_rule->record_func(&msg)) {
+		zc_error("a_rule->record fail");
+		return -1;
+	}
+	return 0;
+}
+
+static int zlog_rule_output_stdout(zlog_rule_t * a_rule,
+				   zlog_thread_t * a_thread)
+{
+
+	if (zlog_format_gen_msg(a_rule->format, a_thread)) {
+		zc_error("zlog_format_gen_msg fail");
+		return -1;
+	}
+
+	if (write(STDOUT_FILENO,
+		zlog_buf_str(a_thread->msg_buf), zlog_buf_len(a_thread->msg_buf)) < 0) {
+		zc_error("write fail, errno[%d]", errno);
+		return -1;
+	}
+
+	return 0;
+}
+
+static int zlog_rule_output_stderr(zlog_rule_t * a_rule,
+				   zlog_thread_t * a_thread)
+{
+
+	if (zlog_format_gen_msg(a_rule->format, a_thread)) {
+		zc_error("zlog_format_gen_msg fail");
+		return -1;
+	}
+
+	if (write(STDERR_FILENO,
+		zlog_buf_str(a_thread->msg_buf), zlog_buf_len(a_thread->msg_buf)) < 0) {
+		zc_error("write fail, errno[%d]", errno);
+		return -1;
+	}
+
+	return 0;
+}
+/*******************************************************************************/
+static int syslog_facility_atoi(char *facility)
+{
+#ifndef _WIN32
+	/* guess no unix system will choose -187
+	 * as its syslog facility, so it is a safe return value
+	 */
+	zc_assert(facility, -187);
+
+	if (STRICMP(facility, ==, "LOG_LOCAL0")) return LOG_LOCAL0;
+	if (STRICMP(facility, ==, "LOG_LOCAL1")) return LOG_LOCAL1;
+	if (STRICMP(facility, ==, "LOG_LOCAL2")) return LOG_LOCAL2;
+	if (STRICMP(facility, ==, "LOG_LOCAL3")) return LOG_LOCAL3;
+	if (STRICMP(facility, ==, "LOG_LOCAL4")) return LOG_LOCAL4;
+	if (STRICMP(facility, ==, "LOG_LOCAL5")) return LOG_LOCAL5;
+	if (STRICMP(facility, ==, "LOG_LOCAL6")) return LOG_LOCAL6;
+	if (STRICMP(facility, ==, "LOG_LOCAL7")) return LOG_LOCAL7;
+	if (STRICMP(facility, ==, "LOG_USER")) return LOG_USER;
+	if (STRICMP(facility, ==, "LOG_AUTHPRIV")) return LOG_AUTHPRIV;
+	if (STRICMP(facility, ==, "LOG_CRON")) return LOG_CRON;
+	if (STRICMP(facility, ==, "LOG_DAEMON")) return LOG_DAEMON;
+	if (STRICMP(facility, ==, "LOG_FTP")) return LOG_FTP;
+	if (STRICMP(facility, ==, "LOG_KERN")) return LOG_KERN;
+	if (STRICMP(facility, ==, "LOG_LPR")) return LOG_LPR;
+	if (STRICMP(facility, ==, "LOG_MAIL")) return LOG_MAIL;
+	if (STRICMP(facility, ==, "LOG_NEWS")) return LOG_NEWS;
+	if (STRICMP(facility, ==, "LOG_SYSLOG")) return LOG_SYSLOG;
+		return LOG_AUTHPRIV;
+
+#endif
+	zc_error("wrong syslog facility[%s], must in LOG_LOCAL[0-7] or LOG_USER", facility);
+	return -187;
+}
+
+static int zlog_rule_parse_path(char *path_start, /* start with a " */
+		char *path_str, size_t path_size, zc_arraylist_t **path_specs,
+		int *time_cache_count)
+{
+	char *p, *q;
+	size_t len;
+	zlog_spec_t *a_spec;
+	zc_arraylist_t *specs;
+
+	p = path_start + 1;
+
+	q = strrchr(p, '"');
+	if (!q) {
+		zc_error("matching \" not found in conf line[%s]", path_start);
+		return -1;
+	}
+	len = q - p;
+	if (len > path_size - 1) {
+		zc_error("file_path too long %ld > %ld", len, path_size - 1);
+		return -1;
+	}
+	memcpy(path_str, p, len);
+
+	/* replace any environment variables like %E(HOME) */
+	if (zc_str_replace_env(path_str, path_size)) {
+		zc_error("zc_str_replace_env fail");
+		return -1;
+	}
+
+	if (strchr(path_str, '%') == NULL) {
+		/* static, no need create specs */
+		return 0;
+	}
+
+	specs = zc_arraylist_new((zc_arraylist_del_fn)zlog_spec_del);
+	if (!path_specs) {
+		zc_error("zc_arraylist_new fail");
+		return -1;
+	}
+
+	for (p = path_str; *p != '\0'; p = q) {
+		a_spec = zlog_spec_new(p, &q, time_cache_count);
+		if (!a_spec) {
+			zc_error("zlog_spec_new fail");
+			goto err;
+		}
+
+		if (zc_arraylist_add(specs, a_spec)) {
+			zc_error("zc_arraylist_add fail");
+			goto err;
+		}
+	}
+
+	*path_specs = specs;
+	return 0;
+err:
+	if (specs) zc_arraylist_del(specs);
+	if (a_spec) zlog_spec_del(a_spec);
+	return -1;
+}
+
+zlog_rule_t *zlog_rule_new(char *line,
+		zc_arraylist_t *levels,
+		zlog_format_t * default_format,
+		zc_arraylist_t * formats,
+		unsigned int file_perms,
+		size_t fsync_period,
+		int * time_cache_count)
+{
+	int rc = 0;
+	int nscan = 0;
+	int nread = 0;
+	zlog_rule_t *a_rule;
+
+	char selector[MAXLEN_CFG_LINE + 1];
+	char category[MAXLEN_CFG_LINE + 1];
+	char level[MAXLEN_CFG_LINE + 1];
+
+	char *action;
+	char output[MAXLEN_CFG_LINE + 1];
+	char format_name[MAXLEN_CFG_LINE + 1];
+	char file_path[MAXLEN_CFG_LINE + 1];
+	char archive_max_size[MAXLEN_CFG_LINE + 1];
+	char *file_limit;
+
+	char *p;
+	char *q;
+	size_t len;
+
+	zc_assert(line, NULL);
+	zc_assert(default_format, NULL);
+	zc_assert(formats, NULL);
+
+	a_rule = calloc(1, sizeof(zlog_rule_t));
+	if (!a_rule) {
+		zc_error("calloc fail, errno[%d]", errno);
+		return NULL;
+	}
+
+	a_rule->file_perms = file_perms;
+	a_rule->fsync_period = fsync_period;
+
+	/* line         [f.INFO "%H/log/aa.log", 20MB * 12; MyTemplate]
+	 * selector     [f.INFO]
+	 * *action      ["%H/log/aa.log", 20MB * 12; MyTemplate]
+	 */
+	memset(&selector, 0x00, sizeof(selector));
+	nscan = sscanf(line, "%s %n", selector, &nread);
+	if (nscan != 1) {
+		zc_error("sscanf [%s] fail, selector", line);
+		goto err;
+	}
+	action = line + nread;
+
+	/*
+	 * selector     [f.INFO]
+	 * category     [f]
+	 * level        [.INFO]
+	 */
+	memset(category, 0x00, sizeof(category));
+	memset(level, 0x00, sizeof(level));
+	nscan = sscanf(selector, " %[^.].%s", category, level);
+	if (nscan != 2) {
+		zc_error("sscanf [%s] fail, category or level is null",
+			 selector);
+		goto err;
+	}
+
+	/* check and set category */
+	for (p = category; *p != '\0'; p++) {
+		if ((!isalnum(*p)) && (*p != '_') && (*p != '-') && (*p != '*') && (*p != '!')) {
+			zc_error("category name[%s] character is not in [a-Z][0-9][_!*-]", category);
+			goto err;
+		}
+	}
+
+	/* as one line can't be longer than MAXLEN_CFG_LINE, same as category */
+	strcpy(a_rule->category, category);
+
+	/* check and set level */
+	switch (level[0]) {
+	case '=':
+		/* aa.=debug */
+		a_rule->compare_char = '=';
+		p = level + 1;
+		break;
+	case '!':
+		/* aa.!debug */
+		a_rule->compare_char = '!';
+		p = level + 1;
+		break;
+	case '*':
+		/* aa.* */
+		a_rule->compare_char = '*';
+		p = level;
+		break;
+	default:
+		/* aa.debug */
+		a_rule->compare_char = '.';
+		p = level;
+		break;
+	}
+
+	a_rule->level = zlog_level_list_atoi(levels, p);
+
+	/* level_bit is a bitmap represents which level can be output 
+	 * 32bytes, [0-255] levels, see level.c
+	 * which bit field is 1 means allow output and 0 not
+	 */
+	switch (a_rule->compare_char) {
+	case '=':
+		memset(a_rule->level_bitmap, 0x00, sizeof(a_rule->level_bitmap));
+		a_rule->level_bitmap[a_rule->level / 8] |= (1 << (7 - a_rule->level % 8));
+		break;
+	case '!':
+		memset(a_rule->level_bitmap, 0xFF, sizeof(a_rule->level_bitmap));
+		a_rule->level_bitmap[a_rule->level / 8] &= ~(1 << (7 - a_rule->level % 8));
+		break;
+	case '*':
+		memset(a_rule->level_bitmap, 0xFF, sizeof(a_rule->level_bitmap));
+		break;
+	case '.':
+		memset(a_rule->level_bitmap, 0x00, sizeof(a_rule->level_bitmap));
+		a_rule->level_bitmap[a_rule->level / 8] |= ~(0xFF << (8 - a_rule->level % 8));
+		memset(a_rule->level_bitmap + a_rule->level / 8 + 1, 0xFF,
+				sizeof(a_rule->level_bitmap) -  a_rule->level / 8 - 1);
+		break;
+	}
+
+	/* action               ["%H/log/aa.log", 20MB * 12 ; MyTemplate]
+	 * output               ["%H/log/aa.log", 20MB * 12]
+	 * format               [MyTemplate]
+	 */
+	memset(output, 0x00, sizeof(output));
+	memset(format_name, 0x00, sizeof(format_name));
+	nscan = sscanf(action, " %[^;];%s", output, format_name);
+	if (nscan < 1) {
+		zc_error("sscanf [%s] fail", action);
+		goto err;
+	}
+
+	/* check and get format */
+	if (STRCMP(format_name, ==, "")) {
+		zc_debug("no format specified, use default");
+		a_rule->format = default_format;
+	} else {
+		int i;
+		int find_flag = 0;
+		zlog_format_t *a_format;
+
+		zc_arraylist_foreach(formats, i, a_format) {
+			if (zlog_format_has_name(a_format, format_name)) {
+				a_rule->format = a_format;
+				find_flag = 1;
+				break;
+			}
+		}
+		if (!find_flag) {
+			zc_error("in conf file can't find format[%s], pls check",
+			     format_name);
+			goto err;
+		}
+	}
+
+	/* output               [-"%E(HOME)/log/aa.log" , 20MB*12]  [>syslog , LOG_LOCAL0 ]
+	 * file_path            [-"%E(HOME)/log/aa.log" ]           [>syslog ]
+	 * *file_limit          [20MB * 12 ~ "aa.#i.log" ]          [LOG_LOCAL0]
+	 */
+	memset(file_path, 0x00, sizeof(file_path));
+	nscan = sscanf(output, " %[^,],", file_path);
+	if (nscan < 1) {
+		zc_error("sscanf [%s] fail", action);
+		goto err;
+	}
+
+	file_limit = strchr(output, ',');
+	if (file_limit) {
+		file_limit++; /* skip the , */
+		while( isspace(*file_limit) ) {
+			file_limit++;
+		}
+	}
+
+	p = NULL;
+	switch (file_path[0]) {
+	case '-' :
+		/* sync file each time write log */
+		if (file_path[1] != '"') {
+			zc_error(" - must set before a file output");
+			goto err;
+		}
+
+		/* no need to fsync, as file is opened by O_SYNC, write immediately */
+		a_rule->fsync_period = 0;
+
+		p = file_path + 1;
+#ifndef _WIN32
+		a_rule->file_open_flags = O_SYNC;
+		/* fall through */
+#endif
+	case '"' :
+		if (!p) p = file_path;
+
+		rc = zlog_rule_parse_path(p, a_rule->file_path, sizeof(a_rule->file_path),
+				&(a_rule->dynamic_specs), time_cache_count);
+		if (rc) {
+			zc_error("zlog_rule_parse_path fail");
+			goto err;
+		}
+
+		if (file_limit) {
+			memset(archive_max_size, 0x00, sizeof(archive_max_size));
+			nscan = sscanf(file_limit, " %[0-9GgMmKkBb] * %d ~",
+					archive_max_size, &(a_rule->archive_max_count));
+			if (nscan) {
+				a_rule->archive_max_size = zc_parse_byte_size(archive_max_size);
+			}
+			p = strchr(file_limit, '"');
+			if (p) { /* archive file path exist */
+				rc = zlog_rule_parse_path(p,
+					a_rule->archive_path, sizeof(a_rule->file_path),
+					&(a_rule->archive_specs), time_cache_count);
+				if (rc) {
+					zc_error("zlog_rule_parse_path fail");
+					goto err;
+				}
+
+				p = strchr(a_rule->archive_path, '#');
+				if ( (p == NULL) || ((strchr(p, 'r') == NULL) && (strchr(p, 's') == NULL))) {
+					zc_error("archive_path must contain #r or #s");
+					goto err;
+				}
+			}
+		}
+
+		/* try to figure out if the log file path is dynamic or static */
+		if (a_rule->dynamic_specs) {
+			if (a_rule->archive_max_size <= 0) {
+				a_rule->output = zlog_rule_output_dynamic_file_single;
+			} else {
+				a_rule->output = zlog_rule_output_dynamic_file_rotate;
+			}
+		} else {
+			struct stat stb;
+
+			if (a_rule->archive_max_size <= 0) {
+				a_rule->output = zlog_rule_output_static_file_single;
+			} else {
+				/* as rotate, so need to reopen everytime */
+				a_rule->output = zlog_rule_output_static_file_rotate;
+			}
+
+			a_rule->static_fd = open(a_rule->file_path,
+				O_WRONLY | O_APPEND | O_CREAT | a_rule->file_open_flags,
+				a_rule->file_perms);
+			if (a_rule->static_fd < 0) {
+				zc_error("open file[%s] fail, errno[%d]", a_rule->file_path, errno);
+				goto err;
+			}
+
+			/* save off the inode information for checking for a changed file later on */
+			if (fstat(a_rule->static_fd, &stb)) {
+				zc_error("stat [%s] fail, errno[%d], failing to open static_fd", a_rule->file_path, errno);
+				goto err;
+			}
+
+			if (a_rule->archive_max_size > 0) {
+				close(a_rule->static_fd);
+				a_rule->static_fd = -1;
+			}
+
+			a_rule->static_dev = stb.st_dev;
+			a_rule->static_ino = stb.st_ino;
+		}
+		break;
+	case '|' :
+		a_rule->pipe_fp = popen(output + 1, "w");
+		if (!a_rule->pipe_fp) {
+			zc_error("popen fail, errno[%d]", errno);
+			goto err;
+		}
+		a_rule->pipe_fd = fileno(a_rule->pipe_fp);
+		if (a_rule->pipe_fd < 0 ) {
+			zc_error("fileno fail, errno[%d]", errno);
+			goto err;
+		}
+		a_rule->output = zlog_rule_output_pipe;
+		break;
+	case '>' :
+		if (STRNCMP(file_path + 1, ==, "syslog", 6)) {
+			a_rule->syslog_facility = syslog_facility_atoi(file_limit);
+#ifdef _WIN32
+            zc_error("syslog not support under windows!");
+#else
+			if (a_rule->syslog_facility == -187) {
+				zc_error("-187 get");
+				goto err;
+			}
+			a_rule->output = zlog_rule_output_syslog;
+			openlog(NULL, LOG_NDELAY | LOG_NOWAIT | LOG_PID, LOG_USER);
+#endif
+		} else if (STRNCMP(file_path + 1, ==, "stdout", 6)) {
+			a_rule->output = zlog_rule_output_stdout;
+		} else if (STRNCMP(file_path + 1, ==, "stderr", 6)) {
+			a_rule->output = zlog_rule_output_stderr;
+		} else {
+			zc_error
+			    ("[%s]the string after is not syslog, stdout or stderr", output);
+			goto err;
+		}
+		break;
+	case '$' :
+		// read only MAXLEN_PATH characters from the file_path + 1
+		strncpy(a_rule->record_name, file_path + 1, MAXLEN_PATH);
+		a_rule->record_name[MAXLEN_PATH] = '\0';
+		
+		if (file_limit) {  /* record path exists */
+			p = strchr(file_limit, '"');
+			if (!p) {
+				zc_error("record_path not start with \", [%s]", file_limit);
+				goto err;
+			}
+			p++; /* skip 1st " */
+
+			q = strrchr(p, '"');
+			if (!q) {
+				zc_error("matching \" not found in conf line[%s]", p);
+				goto err;
+			}
+			len = q - p;
+			if (len > sizeof(a_rule->record_path) - 1) {
+				zc_error("record_path too long %ld > %ld", len, sizeof(a_rule->record_path) - 1);
+				goto err;
+			}
+			memcpy(a_rule->record_path, p, len);
+		}
+
+		/* replace any environment variables like %E(HOME) */
+		rc = zc_str_replace_env(a_rule->record_path, sizeof(a_rule->record_path));
+		if (rc) {
+			zc_error("zc_str_replace_env fail");
+			goto err;
+		}
+
+		/* try to figure out if the log file path is dynamic or static */
+		if (strchr(a_rule->record_path, '%') == NULL) {
+			a_rule->output = zlog_rule_output_static_record;
+		} else {
+			zlog_spec_t *a_spec;
+
+			a_rule->output = zlog_rule_output_dynamic_record;
+
+			a_rule->dynamic_specs = zc_arraylist_new((zc_arraylist_del_fn)zlog_spec_del);
+			if (!(a_rule->dynamic_specs)) {
+				zc_error("zc_arraylist_new fail");
+				goto err;
+			}
+			for (p = a_rule->record_path; *p != '\0'; p = q) {
+				a_spec = zlog_spec_new(p, &q, time_cache_count);
+				if (!a_spec) {
+					zc_error("zlog_spec_new fail");
+					goto err;
+				}
+
+				rc = zc_arraylist_add(a_rule->dynamic_specs, a_spec);
+				if (rc) {
+					zlog_spec_del(a_spec);
+					zc_error("zc_arraylist_add fail");
+					goto err;
+				}
+			}
+		}
+		break;
+	default :
+		zc_error("the 1st char[%c] of file_path[%s] is wrong",
+		       file_path[0], file_path);
+		goto err;
+	}
+
+	return a_rule;
+err:
+	zlog_rule_del(a_rule);
+	return NULL;
+}
+
+void zlog_rule_del(zlog_rule_t * a_rule)
+{
+	zc_assert(a_rule,);
+	if (a_rule->dynamic_specs) {
+		zc_arraylist_del(a_rule->dynamic_specs);
+		a_rule->dynamic_specs = NULL;
+	}
+	if (a_rule->static_fd > 0) {
+		if (close(a_rule->static_fd)) {
+			zc_error("close fail, maybe cause by write, errno[%d]", errno);
+		}
+	}
+#ifndef _WIN32
+	if (a_rule->pipe_fp) {
+		if (pclose(a_rule->pipe_fp) == -1) {
+			zc_error("pclose fail, errno[%d]", errno);
+		}
+	}
+#endif
+	if (a_rule->archive_specs) {
+		zc_arraylist_del(a_rule->archive_specs);
+		a_rule->archive_specs = NULL;
+	}
+	zc_debug("zlog_rule_del[%p]", a_rule);
+    free(a_rule);
+	return;
+}
+
+/*******************************************************************************/
+int zlog_rule_output(zlog_rule_t * a_rule, zlog_thread_t * a_thread)
+{
+	switch (a_rule->compare_char) {
+	case '*' :
+		return a_rule->output(a_rule, a_thread);
+		break;
+	case '.' :
+		if (a_thread->event->level >= a_rule->level) {
+			return a_rule->output(a_rule, a_thread);
+		} else {
+			return 0;
+		}
+		break;
+	case '=' :
+		if (a_thread->event->level == a_rule->level) {
+			return a_rule->output(a_rule, a_thread);
+		} else {
+			return 0;
+		}
+		break;
+	case '!' :
+		if (a_thread->event->level != a_rule->level) {
+			return a_rule->output(a_rule, a_thread);
+		} else {
+			return 0;
+		}
+		break;
+	}
+
+	return 0;
+}
+
+/*******************************************************************************/
+int zlog_rule_is_wastebin(zlog_rule_t * a_rule)
+{
+	zc_assert(a_rule, -1);
+	
+	if (STRCMP(a_rule->category, ==, "!")) {
+		return 1;
+	}
+
+	return 0;
+}
+
+/*******************************************************************************/
+int zlog_rule_match_category(zlog_rule_t * a_rule, char *category)
+{
+	zc_assert(a_rule, -1);
+	zc_assert(category, -1);
+
+	if (STRCMP(a_rule->category, ==, "*")) {
+		/* '*' match anything, so go on */
+		return 1;
+	} else if (STRCMP(a_rule->category, ==, category)) {
+		/* accurate compare */
+		return 1;
+	} else {
+		/* aa_ match aa_xx & aa, but not match aa1_xx */
+		size_t len;
+		len = strlen(a_rule->category);
+
+		if (a_rule->category[len - 1] == '_') {
+			if (strlen(category) == len - 1) {
+				len--;
+			}
+
+			if (STRNCMP(a_rule->category, ==, category, len)) {
+				return 1;
+			}
+		}
+	}
+
+	return 0;
+}
+
+/*******************************************************************************/
+
+int zlog_rule_set_record(zlog_rule_t * a_rule, zc_hashtable_t *records)
+{
+	zlog_record_t *a_record;
+
+	if (a_rule->output != zlog_rule_output_static_record 
+	&&  a_rule->output != zlog_rule_output_dynamic_record) {
+		return 0; /* fliter, may go through not record rule */
+	}
+
+	a_record = zc_hashtable_get(records, a_rule->record_name);
+	if (a_record) {
+		a_rule->record_func = a_record->output;
+	}
+	return 0;
+}

zlog/src/rule.h

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @file rule.h
+ * @brief rule decide to output in format by category & level
+ */
+
+#ifndef __zlog_rule_h
+#define __zlog_rule_h
+
+#include <stdio.h>
+#include <pthread.h>
+
+#include "zc_defs.h"
+#include "format.h"
+#include "thread.h"
+#include "rotater.h"
+#include "record.h"
+
+typedef struct zlog_rule_s zlog_rule_t;
+
+typedef int (*zlog_rule_output_fn) (zlog_rule_t * a_rule, zlog_thread_t * a_thread);
+
+struct zlog_rule_s {
+	char category[MAXLEN_CFG_LINE + 1];
+	char compare_char;
+	/* 
+	 * [*] log all level
+	 * [.] log level >= rule level, default
+	 * [=] log level == rule level 
+	 * [!] log level != rule level
+	 */
+	int level;
+	unsigned char level_bitmap[32]; /* for category determine whether output or not */
+
+	unsigned int file_perms;
+	int file_open_flags;
+
+	char file_path[MAXLEN_PATH + 1];
+	zc_arraylist_t *dynamic_specs;
+	int static_fd;
+	dev_t static_dev;
+	ino_t static_ino;
+
+	long archive_max_size;
+	int archive_max_count;
+	char archive_path[MAXLEN_PATH + 1];
+	zc_arraylist_t *archive_specs;
+
+	FILE *pipe_fp;
+	int pipe_fd;
+
+	size_t fsync_period;
+	size_t fsync_count;
+
+	zc_arraylist_t *levels;
+	int syslog_facility;
+
+	zlog_format_t *format;
+	zlog_rule_output_fn output;
+
+	char record_name[MAXLEN_PATH + 1];
+	char record_path[MAXLEN_PATH + 1];
+	zlog_record_fn record_func;
+};
+
+zlog_rule_t *zlog_rule_new(char * line,
+		zc_arraylist_t * levels,
+		zlog_format_t * default_format,
+		zc_arraylist_t * formats,
+		unsigned int file_perms,
+		size_t fsync_period,
+		int * time_cache_count);
+
+void zlog_rule_del(zlog_rule_t * a_rule);
+void zlog_rule_profile(zlog_rule_t * a_rule, int flag);
+int zlog_rule_match_category(zlog_rule_t * a_rule, char *category);
+int zlog_rule_is_wastebin(zlog_rule_t * a_rule);
+int zlog_rule_set_record(zlog_rule_t * a_rule, zc_hashtable_t *records);
+int zlog_rule_output(zlog_rule_t * a_rule, zlog_thread_t * a_thread);
+
+#endif

zlog/src/spec.c

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "fmacros.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include <sys/time.h>
+#include <time.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "conf.h"
+#include "spec.h"
+#include "level_list.h"
+#include "zc_defs.h"
+
+#ifdef _WIN32
+#define ZLOG_DEFAULT_TIME_FMT "%Y-%m-%d %H:%M:%S"
+#else
+#define ZLOG_DEFAULT_TIME_FMT "%F %T"
+#endif
+
+#define	ZLOG_HEX_HEAD  \
+	"\n             0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F    0123456789ABCDEF"
+
+/*******************************************************************************/
+void zlog_spec_profile(zlog_spec_t * a_spec, int flag)
+{
+	zc_assert(a_spec,);
+	zc_profile(flag, "----spec[%p][%.*s][%s|%d][%s,%ld,%ld,%s][%s]----",
+		a_spec,
+		a_spec->len, a_spec->str,
+		a_spec->time_fmt,
+		a_spec->time_cache_index,
+		a_spec->print_fmt, (long)a_spec->max_width, (long)a_spec->min_width, a_spec->left_fill_zeros ? "true" : "false",
+		a_spec->mdc_key);
+	return;
+}
+
+/*******************************************************************************/
+/* implementation of write function */
+
+static int zlog_spec_write_time_internal(zlog_spec_t * a_spec, zlog_thread_t * a_thread, zlog_buf_t * a_buf, short use_utc)
+{
+	zlog_time_cache_t * a_cache = a_thread->event->time_caches + a_spec->time_cache_index;
+	time_t now_sec = a_thread->event->time_stamp.tv_sec;
+	struct tm *time;
+	time_t *time_sec;
+	typedef struct tm *(*zlog_spec_time_fn) (const time_t*, struct tm *);
+	zlog_spec_time_fn time_stamp_convert_function;
+	if( use_utc ) {
+		time = &(a_thread->event->time_utc);
+		time_sec =  &(a_thread->event->time_utc_sec);
+		time_stamp_convert_function = gmtime_r;
+	} else {
+		time = &(a_thread->event->time_local);
+		time_sec =  &(a_thread->event->time_local_sec);
+		time_stamp_convert_function = localtime_r;
+	}
+
+	/* the event meet the 1st time_spec in his life cycle */
+	if (!now_sec) {
+		gettimeofday(&(a_thread->event->time_stamp), NULL);
+		now_sec = a_thread->event->time_stamp.tv_sec;
+	}
+
+	/* When this event's last cached time_local is not now */
+	if (*time_sec != now_sec) {
+		time_stamp_convert_function(&(now_sec), time);
+		*time_sec = now_sec;
+	}
+
+	/* When this spec's last cache time string is not now */
+	if (a_cache->sec != now_sec) {
+		a_cache->len = strftime(a_cache->str, sizeof(a_cache->str), a_spec->time_fmt, time);
+		a_cache->sec = now_sec;
+	}
+
+	return zlog_buf_append(a_buf, a_cache->str, a_cache->len);
+}
+
+static int zlog_spec_write_time_UTC(zlog_spec_t * a_spec, zlog_thread_t * a_thread, zlog_buf_t * a_buf)
+{
+	return zlog_spec_write_time_internal(a_spec, a_thread, a_buf, 1);
+}
+
+static int zlog_spec_write_time_local(zlog_spec_t * a_spec, zlog_thread_t * a_thread, zlog_buf_t * a_buf)
+{
+	return zlog_spec_write_time_internal(a_spec, a_thread, a_buf, 0);
+}
+
+#if 0
+static int zlog_spec_write_time_D(zlog_spec_t * a_spec, zlog_thread_t * a_thread, zlog_buf_t * a_buf)
+{
+	if (!a_thread->event->time_stamp.tv_sec) {
+		gettimeofday(&(a_thread->event->time_stamp), NULL);
+	}
+
+	/*
+	 * It is modified when time slips one second.
+	 * So it is a strong cache, as Default time format is always %F %T.
+	 * That's why I said %D is faster than %d()
+	 */
+	if (a_thread->event->time_stamp.tv_sec != a_thread->event->time_last_D) {
+
+		a_thread->event->time_last_D = a_thread->event->time_stamp.tv_sec;
+		localtime_r(&(a_thread->event->time_stamp.tv_sec),
+			    &(a_thread->event->time_local));
+
+		strftime(a_thread->event->time_cache_D,
+			sizeof(a_thread->event->time_cache_D),
+			ZLOG_DEFAULT_TIME_FMT, &(a_thread->event->time_local) );
+	}
+	return zlog_buf_append(a_buf, a_thread->event->time_cache_D, sizeof(a_thread->event->time_cache_D) - 1);
+}
+#endif
+
+static int zlog_spec_write_ms(zlog_spec_t * a_spec, zlog_thread_t * a_thread, zlog_buf_t * a_buf)
+{
+	if (!a_thread->event->time_stamp.tv_sec) {
+		gettimeofday(&(a_thread->event->time_stamp), NULL);
+	}
+	return zlog_buf_printf_dec32(a_buf, (a_thread->event->time_stamp.tv_usec / 1000), 3);
+}
+
+static int zlog_spec_write_us(zlog_spec_t * a_spec, zlog_thread_t * a_thread, zlog_buf_t * a_buf)
+{
+	if (!a_thread->event->time_stamp.tv_sec) {
+		gettimeofday(&(a_thread->event->time_stamp), NULL);
+	}
+	return zlog_buf_printf_dec32(a_buf, a_thread->event->time_stamp.tv_usec, 6);
+}
+
+static int zlog_spec_write_mdc(zlog_spec_t * a_spec, zlog_thread_t * a_thread, zlog_buf_t * a_buf)
+{
+	zlog_mdc_kv_t *a_mdc_kv;
+
+	a_mdc_kv = zlog_mdc_get_kv(a_thread->mdc, a_spec->mdc_key);
+	if (!a_mdc_kv) {
+		zc_error("zlog_mdc_get_kv key[%s] fail", a_spec->mdc_key);
+		return 0;
+	}
+
+	return zlog_buf_append(a_buf, a_mdc_kv->value, a_mdc_kv->value_len);
+}
+
+static int zlog_spec_write_str(zlog_spec_t * a_spec, zlog_thread_t * a_thread, zlog_buf_t * a_buf)
+{
+	return zlog_buf_append(a_buf, a_spec->str, a_spec->len);
+}
+
+static int zlog_spec_write_category(zlog_spec_t * a_spec, zlog_thread_t * a_thread, zlog_buf_t * a_buf)
+{
+	return zlog_buf_append(a_buf, a_thread->event->category_name, a_thread->event->category_name_len);
+}
+
+static int zlog_spec_write_srcfile(zlog_spec_t * a_spec, zlog_thread_t * a_thread, zlog_buf_t * a_buf)
+{
+	if (!a_thread->event->file) {
+		return zlog_buf_append(a_buf, "(file=null)", sizeof("(file=null)") - 1);
+	} else {
+		return zlog_buf_append(a_buf, a_thread->event->file, a_thread->event->file_len);
+	}
+}
+
+static int zlog_spec_write_srcfile_neat(zlog_spec_t * a_spec, zlog_thread_t * a_thread, zlog_buf_t * a_buf)
+{
+	char *p;
+
+	if ((p = strrchr(a_thread->event->file, '/')) != NULL) {
+		return zlog_buf_append(a_buf, p + 1,
+			(char*)a_thread->event->file + a_thread->event->file_len - p - 1);
+	} else {
+		if (!a_thread->event->file) {
+			return zlog_buf_append(a_buf, "(file=null)", sizeof("(file=null)") - 1);
+		} else {
+			return zlog_buf_append(a_buf, a_thread->event->file, a_thread->event->file_len);
+		}
+	}
+}
+
+static int zlog_spec_write_srcline(zlog_spec_t * a_spec, zlog_thread_t * a_thread, zlog_buf_t * a_buf)
+{
+
+	return zlog_buf_printf_dec64(a_buf, a_thread->event->line, 0);
+}
+
+static int zlog_spec_write_srcfunc(zlog_spec_t * a_spec, zlog_thread_t * a_thread, zlog_buf_t * a_buf)
+{
+	if (!a_thread->event->file) {
+		return zlog_buf_append(a_buf, "(func=null)", sizeof("(func=null)") - 1);
+	} else {
+		return zlog_buf_append(a_buf, a_thread->event->func, a_thread->event->func_len);
+	}
+}
+
+
+static int zlog_spec_write_hostname(zlog_spec_t * a_spec, zlog_thread_t * a_thread, zlog_buf_t * a_buf)
+{
+	return zlog_buf_append(a_buf, a_thread->event->host_name, a_thread->event->host_name_len);
+}
+
+static int zlog_spec_write_newline(zlog_spec_t * a_spec, zlog_thread_t * a_thread, zlog_buf_t * a_buf)
+{
+	return zlog_buf_append(a_buf, FILE_NEWLINE, FILE_NEWLINE_LEN);
+}
+
+static int zlog_spec_write_cr(zlog_spec_t * a_spec, zlog_thread_t * a_thread, zlog_buf_t * a_buf)
+{
+	return zlog_buf_append(a_buf, "\r", 1);
+}
+
+static int zlog_spec_write_percent(zlog_spec_t * a_spec, zlog_thread_t * a_thread, zlog_buf_t * a_buf)
+{
+	return zlog_buf_append(a_buf, "%", 1);
+}
+
+static int zlog_spec_write_pid(zlog_spec_t * a_spec, zlog_thread_t * a_thread, zlog_buf_t * a_buf)
+{
+	/* 1st in event lifecycle */
+	if (!a_thread->event->pid) {
+		a_thread->event->pid = getpid();
+
+		/* compare with previous event */
+		if (a_thread->event->pid != a_thread->event->last_pid) {
+			a_thread->event->last_pid = a_thread->event->pid;
+			a_thread->event->pid_str_len
+				= sprintf(a_thread->event->pid_str, "%u", a_thread->event->pid);
+		}
+	}
+
+	return zlog_buf_append(a_buf, a_thread->event->pid_str, a_thread->event->pid_str_len);
+}
+
+static int zlog_spec_write_tid_hex(zlog_spec_t * a_spec, zlog_thread_t * a_thread, zlog_buf_t * a_buf)
+{
+
+	/* don't need to get tid again, as tmap_new_thread fetched it already */
+	/* and fork not change tid */
+	return zlog_buf_append(a_buf, a_thread->event->tid_hex_str, a_thread->event->tid_hex_str_len);
+}
+
+static int zlog_spec_write_tid_long(zlog_spec_t * a_spec, zlog_thread_t * a_thread, zlog_buf_t * a_buf)
+{
+
+	/* don't need to get tid again, as tmap_new_thread fetched it already */
+	/* and fork not change tid */
+	return zlog_buf_append(a_buf, a_thread->event->tid_str, a_thread->event->tid_str_len);
+}
+
+static int zlog_spec_write_ktid(zlog_spec_t * a_spec, zlog_thread_t * a_thread, zlog_buf_t * a_buf)
+{
+
+	/* don't need to get ktid again, as tmap_new_thread fetched it already */
+	/* and fork not change tid */
+	return zlog_buf_append(a_buf, a_thread->event->ktid_str, a_thread->event->ktid_str_len);
+}
+
+static int zlog_spec_write_level_lowercase(zlog_spec_t * a_spec, zlog_thread_t * a_thread, zlog_buf_t * a_buf)
+{
+	zlog_level_t *a_level;
+
+	a_level = zlog_level_list_get(zlog_env_conf->levels, a_thread->event->level);
+	return zlog_buf_append(a_buf, a_level->str_lowercase, a_level->str_len);
+}
+
+static int zlog_spec_write_level_uppercase(zlog_spec_t * a_spec, zlog_thread_t * a_thread, zlog_buf_t * a_buf)
+{
+	zlog_level_t *a_level;
+
+	a_level = zlog_level_list_get(zlog_env_conf->levels, a_thread->event->level);
+	return zlog_buf_append(a_buf, a_level->str_uppercase, a_level->str_len);
+}
+
+static int zlog_spec_write_usrmsg(zlog_spec_t * a_spec, zlog_thread_t * a_thread, zlog_buf_t * a_buf)
+{
+	if (a_thread->event->generate_cmd == ZLOG_FMT) {
+		if (a_thread->event->str_format) {
+			return zlog_buf_vprintf(a_buf,
+				      a_thread->event->str_format,
+				      a_thread->event->str_args);
+		} else {
+			return zlog_buf_append(a_buf, "format=(null)", sizeof("format=(null)")-1);
+		}
+	} else if (a_thread->event->generate_cmd == ZLOG_HEX) {
+		int rc;
+		long line_offset;
+		long byte_offset;
+
+		/* thread buf start == null or len <= 0 */
+		if (a_thread->event->hex_buf == NULL) {
+			rc = zlog_buf_append(a_buf, "buf=(null)", sizeof("buf=(null)")-1);
+			goto zlog_hex_exit;
+		}
+
+		rc = zlog_buf_append(a_buf, ZLOG_HEX_HEAD, sizeof(ZLOG_HEX_HEAD)-1);
+		if (rc) {
+			goto zlog_hex_exit;
+		}
+
+		line_offset = 0;
+		//byte_offset = 0;
+
+		while (1) {
+			unsigned char c;
+
+			rc = zlog_buf_append(a_buf, "\n", 1);
+			if (rc)  goto zlog_hex_exit;
+
+			rc = zlog_buf_printf_dec64(a_buf, line_offset + 1, 10);
+			if (rc)  goto zlog_hex_exit;
+			rc = zlog_buf_append(a_buf, "   ", 3);
+			if (rc)  goto zlog_hex_exit;
+
+			for (byte_offset = 0; byte_offset < 16; byte_offset++) {
+				if (line_offset * 16 + byte_offset < a_thread->event->hex_buf_len) {
+					c = *((unsigned char *)a_thread->event->hex_buf
+						+ line_offset * 16 + byte_offset);
+					rc = zlog_buf_printf_hex(a_buf, c, 2);
+					if (rc) goto zlog_hex_exit;
+					rc = zlog_buf_append(a_buf, " ", 1);
+					if (rc) goto zlog_hex_exit;
+				} else {
+					rc = zlog_buf_append(a_buf, "   ", 3);
+					if (rc)  goto zlog_hex_exit;
+				}
+			}
+
+			rc = zlog_buf_append(a_buf, "  ", 2);
+			if (rc) goto zlog_hex_exit;
+
+			for (byte_offset = 0; byte_offset < 16; byte_offset++) {
+				if (line_offset * 16 + byte_offset < a_thread->event->hex_buf_len) {
+					c = *((unsigned char *)a_thread->event->hex_buf
+						+ line_offset * 16 + byte_offset);
+					if (c >= 32 && c <= 126) {
+						rc = zlog_buf_append(a_buf,(char*)&c, 1);
+						if (rc)  goto zlog_hex_exit;
+					} else {
+						rc = zlog_buf_append(a_buf, ".", 1);
+						if (rc)  goto zlog_hex_exit;
+					}
+				} else {
+					rc = zlog_buf_append(a_buf, " ", 1);
+					if (rc)  goto zlog_hex_exit;
+				}
+			}
+
+			if (line_offset * 16 + byte_offset >= a_thread->event->hex_buf_len) {
+				break;
+			}
+
+			line_offset++;
+		}
+
+	      zlog_hex_exit:
+		if (rc < 0) {
+			zc_error("write hex msg fail");
+			return -1;
+		} else if (rc > 0) {
+			zc_error("write hex msg, buf is full");
+			return 1;
+		}
+
+		return 0;
+	}
+
+	return 0;
+}
+
+/*******************************************************************************/
+/* implementation of gen function */
+
+static int zlog_spec_gen_msg_direct(zlog_spec_t * a_spec, zlog_thread_t * a_thread)
+{
+	/* no need to reprint %1.2d here */
+	return a_spec->write_buf(a_spec, a_thread, a_thread->msg_buf);
+}
+
+static int zlog_spec_gen_msg_reformat(zlog_spec_t * a_spec, zlog_thread_t * a_thread)
+{
+	int rc;
+
+	zlog_buf_restart(a_thread->pre_msg_buf);
+
+	rc = a_spec->write_buf(a_spec, a_thread, a_thread->pre_msg_buf);
+	if (rc < 0) {
+		zc_error("a_spec->gen_buf fail");
+		return -1;
+	} else if (rc > 0) {
+		/* buf is full, try printf */
+	}
+
+	return zlog_buf_adjust_append(a_thread->msg_buf,
+		zlog_buf_str(a_thread->pre_msg_buf), zlog_buf_len(a_thread->pre_msg_buf),
+		a_spec->left_adjust, a_spec->left_fill_zeros, a_spec->min_width, a_spec->max_width);
+}
+
+/*******************************************************************************/
+static int zlog_spec_gen_path_direct(zlog_spec_t * a_spec, zlog_thread_t * a_thread)
+{
+	/* no need to reprint %1.2d here */
+	return a_spec->write_buf(a_spec, a_thread, a_thread->path_buf);
+}
+
+static int zlog_spec_gen_path_reformat(zlog_spec_t * a_spec, zlog_thread_t * a_thread)
+{
+	int rc;
+
+	zlog_buf_restart(a_thread->pre_path_buf);
+
+	rc = a_spec->write_buf(a_spec, a_thread, a_thread->pre_path_buf);
+	if (rc < 0) {
+		zc_error("a_spec->gen_buf fail");
+		return -1;
+	} else if (rc > 0) {
+		/* buf is full, try printf */
+	}
+
+	return zlog_buf_adjust_append(a_thread->path_buf,
+		zlog_buf_str(a_thread->pre_path_buf), zlog_buf_len(a_thread->pre_path_buf),
+		a_spec->left_adjust, a_spec->left_fill_zeros, a_spec->min_width, a_spec->max_width);
+}
+
+/*******************************************************************************/
+static int zlog_spec_gen_archive_path_direct(zlog_spec_t * a_spec, zlog_thread_t * a_thread)
+{
+	/* no need to reprint %1.2d here */
+	return a_spec->write_buf(a_spec, a_thread, a_thread->archive_path_buf);
+}
+
+static int zlog_spec_gen_archive_path_reformat(zlog_spec_t * a_spec, zlog_thread_t * a_thread)
+{
+	int rc;
+
+	zlog_buf_restart(a_thread->pre_path_buf);
+
+	rc = a_spec->write_buf(a_spec, a_thread, a_thread->pre_path_buf);
+	if (rc < 0) {
+		zc_error("a_spec->gen_buf fail");
+		return -1;
+	} else if (rc > 0) {
+		/* buf is full, try printf */
+	}
+
+	return zlog_buf_adjust_append(a_thread->archive_path_buf,
+		zlog_buf_str(a_thread->pre_path_buf), zlog_buf_len(a_thread->pre_path_buf),
+		a_spec->left_adjust, a_spec->left_fill_zeros, a_spec->min_width, a_spec->max_width);
+}
+
+/*******************************************************************************/
+static int zlog_spec_parse_print_fmt(zlog_spec_t * a_spec)
+{
+	/* -12.35 12 .35 */
+	char *p, *q;
+	long i, j;
+
+	p = a_spec->print_fmt;
+	if (*p == '-') {
+		a_spec->left_adjust = 1;
+		p++;
+	} else {
+		if (*p == '0') {
+			a_spec->left_fill_zeros = 1;
+		}
+		a_spec->left_adjust = 0;
+	}
+
+	i = j = 0;
+	sscanf(p, "%ld.", &i);
+	q = strchr(p, '.');
+	if (q) sscanf(q, ".%ld", &j);
+
+	a_spec->min_width = (size_t) i;
+	a_spec->max_width = (size_t) j;
+	return 0;
+}
+
+/*******************************************************************************/
+void zlog_spec_del(zlog_spec_t * a_spec)
+{
+	zc_assert(a_spec,);
+	zc_debug("zlog_spec_del[%p]", a_spec);
+    free(a_spec);
+}
+
+/* a spec may consist of
+ * a const string: /home/bb
+ * a string begin with %: %12.35d(%F %X,%l)
+ */
+zlog_spec_t *zlog_spec_new(char *pattern_start, char **pattern_next, int *time_cache_count)
+{
+	char *p;
+	int nscan = 0;
+	int nread = 0;
+	zlog_spec_t *a_spec;
+
+	zc_assert(pattern_start, NULL);
+	zc_assert(pattern_next, NULL);
+
+	a_spec = calloc(1, sizeof(zlog_spec_t));
+	if (!a_spec) {
+		zc_error("calloc fail, errno[%d]", errno);
+		return NULL;
+	}
+
+	a_spec->str = p = pattern_start;
+
+	switch (*p) {
+	case '%':
+		/* a string begin with %: %12.35d(%F %X) */
+
+		/* process width and precision char in %-12.35P */
+		nread = 0;
+		nscan = sscanf(p, "%%%[.0-9-]%n", a_spec->print_fmt, &nread);
+		if (nscan == 1) {
+			a_spec->gen_msg = zlog_spec_gen_msg_reformat;
+			a_spec->gen_path = zlog_spec_gen_path_reformat;
+			a_spec->gen_archive_path = zlog_spec_gen_archive_path_reformat;
+			if (zlog_spec_parse_print_fmt(a_spec)) {
+				zc_error("zlog_spec_parse_print_fmt fail");
+				goto err;
+			}
+		} else {
+			nread = 1; /* skip the % char */
+			a_spec->gen_msg = zlog_spec_gen_msg_direct;
+			a_spec->gen_path = zlog_spec_gen_path_direct;
+			a_spec->gen_archive_path = zlog_spec_gen_archive_path_direct;
+		}
+
+		p += nread;
+
+		if (*p == 'd' || *p == 'g') {
+			short use_utc = *p == 'g';
+			if (*(p+1) != '(') {
+				/* without '(' , use default */
+				strcpy(a_spec->time_fmt, ZLOG_DEFAULT_TIME_FMT);
+				p++;
+			} else if (STRNCMP(p, ==, "d()", 3)) {
+				/* with () but without detail time format,
+				 * keep a_spec->time_fmt=="" */
+				strcpy(a_spec->time_fmt, ZLOG_DEFAULT_TIME_FMT);
+				p += 3;
+			} else {
+				nread = 0;
+				p++;
+				nscan = sscanf(p, "(%[^)])%n", a_spec->time_fmt, &nread);
+				if (nscan != 1) {
+					nread = 0;
+				}
+				p += nread;
+				if (*(p - 1) != ')') {
+					zc_error("in string[%s] can't find match \')\'", a_spec->str);
+					goto err;
+				}
+			}
+
+			a_spec->time_cache_index = *time_cache_count;
+			(*time_cache_count)++;
+			if (use_utc) {
+				a_spec->write_buf = zlog_spec_write_time_UTC;
+			} else {
+				a_spec->write_buf = zlog_spec_write_time_local;
+			}
+
+			*pattern_next = p;
+			a_spec->len = p - a_spec->str;
+			break;
+		}
+
+		if (*p == 'M') {
+			nread = 0;
+			nscan = sscanf(p, "M(%[^)])%n", a_spec->mdc_key, &nread);
+			if (nscan != 1) {
+				nread = 0;
+				if (STRNCMP(p, ==, "M()", 3)) {
+					nread = 3;
+				}
+			}
+			p += nread;
+			if (*(p - 1) != ')') {
+				zc_error("in string[%s] can't find match \')\'", a_spec->str);
+				goto err;
+			}
+
+			*pattern_next = p;
+			a_spec->len = p - a_spec->str;
+			a_spec->write_buf = zlog_spec_write_mdc;
+			break;
+		}
+
+		if (STRNCMP(p, ==, "ms", 2)) {
+			p += 2;
+			*pattern_next = p;
+			a_spec->len = p - a_spec->str;
+			a_spec->write_buf = zlog_spec_write_ms;
+			break;
+		} else if (STRNCMP(p, ==, "us", 2)) {
+			p += 2;
+			*pattern_next = p;
+			a_spec->len = p - a_spec->str;
+			a_spec->write_buf = zlog_spec_write_us;
+			break;
+		}
+
+		*pattern_next = p + 1;
+		a_spec->len = p - a_spec->str + 1;
+
+		switch (*p) {
+		case 'c':
+			a_spec->write_buf = zlog_spec_write_category;
+			break;
+		case 'D':
+			strcpy(a_spec->time_fmt, ZLOG_DEFAULT_TIME_FMT);
+			a_spec->time_cache_index = *time_cache_count;
+			(*time_cache_count)++;
+			a_spec->write_buf = zlog_spec_write_time_local;
+			break;
+		case 'F':
+			a_spec->write_buf = zlog_spec_write_srcfile;
+			break;
+		case 'f':
+			a_spec->write_buf = zlog_spec_write_srcfile_neat;
+			break;
+		case 'G':
+			strcpy(a_spec->time_fmt, ZLOG_DEFAULT_TIME_FMT);
+			a_spec->time_cache_index = *time_cache_count;
+			(*time_cache_count)++;
+			a_spec->write_buf = zlog_spec_write_time_UTC;
+			break;
+		case 'H':
+			a_spec->write_buf = zlog_spec_write_hostname;
+			break;
+		case 'k':
+			a_spec->write_buf = zlog_spec_write_ktid;
+			break;
+		case 'L':
+			a_spec->write_buf = zlog_spec_write_srcline;
+			break;
+		case 'm':
+			a_spec->write_buf = zlog_spec_write_usrmsg;
+			break;
+		case 'n':
+			a_spec->write_buf = zlog_spec_write_newline;
+			break;
+		case 'r':
+			a_spec->write_buf = zlog_spec_write_cr;
+			break;
+		case 'p':
+			a_spec->write_buf = zlog_spec_write_pid;
+			break;
+		case 'U':
+			a_spec->write_buf = zlog_spec_write_srcfunc;
+			break;
+		case 'v':
+			a_spec->write_buf = zlog_spec_write_level_lowercase;
+			break;
+		case 'V':
+			a_spec->write_buf = zlog_spec_write_level_uppercase;
+			break;
+		case 't':
+			a_spec->write_buf = zlog_spec_write_tid_hex;
+			break;
+		case 'T':
+			a_spec->write_buf = zlog_spec_write_tid_long;
+			break;
+		case '%':
+			a_spec->write_buf = zlog_spec_write_percent;
+			break;
+		default:
+			zc_error("str[%s] in wrong format, p[%c]", a_spec->str, *p);
+			goto err;
+		}
+		break;
+	default:
+		/* a const string: /home/bb */
+		*pattern_next = strchr(p, '%');
+		if (*pattern_next) {
+			a_spec->len = *pattern_next - p;
+		} else {
+			a_spec->len = strlen(p);
+			*pattern_next = p + a_spec->len;
+		}
+		a_spec->write_buf = zlog_spec_write_str;
+		a_spec->gen_msg = zlog_spec_gen_msg_direct;
+		a_spec->gen_path = zlog_spec_gen_path_direct;
+		a_spec->gen_archive_path = zlog_spec_gen_archive_path_direct;
+	}
+
+	zlog_spec_profile(a_spec, ZC_DEBUG);
+	return a_spec;
+err:
+	zlog_spec_del(a_spec);
+	return NULL;
+}
+

zlog/src/spec.h

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __zlog_spec_h
+#define __zlog_spec_h
+
+#include "event.h"
+#include "buf.h"
+#include "thread.h"
+
+typedef struct zlog_spec_s zlog_spec_t;
+
+/* write buf, according to each spec's Conversion Characters */
+typedef int (*zlog_spec_write_fn) (zlog_spec_t * a_spec,
+			 	zlog_thread_t * a_thread,
+			 	zlog_buf_t * a_buf);
+
+/* gen a_thread->msg or gen a_thread->path by using write_fn */
+typedef int (*zlog_spec_gen_fn) (zlog_spec_t * a_spec,
+				zlog_thread_t * a_thread);
+
+struct zlog_spec_s {
+	char *str;
+	int len;
+
+	char time_fmt[MAXLEN_CFG_LINE + 1];
+	int time_cache_index;
+	char mdc_key[MAXLEN_PATH + 1];
+
+	char print_fmt[MAXLEN_CFG_LINE + 1];
+	int left_adjust;
+	int left_fill_zeros;
+	size_t max_width;
+	size_t min_width;
+
+	zlog_spec_write_fn write_buf;
+	zlog_spec_gen_fn gen_msg;
+	zlog_spec_gen_fn gen_path;
+	zlog_spec_gen_fn gen_archive_path;
+};
+
+zlog_spec_t *zlog_spec_new(char *pattern_start, char **pattern_end, int * time_cache_count);
+void zlog_spec_del(zlog_spec_t * a_spec);
+void zlog_spec_profile(zlog_spec_t * a_spec, int flag);
+
+#define zlog_spec_gen_msg(a_spec, a_thread) \
+	a_spec->gen_msg(a_spec, a_thread)
+
+#define zlog_spec_gen_path(a_spec, a_thread) \
+	a_spec->gen_path(a_spec, a_thread)
+
+#define zlog_spec_gen_archive_path(a_spec, a_thread) \
+	a_spec->gen_archive_path(a_spec, a_thread)
+
+#endif

zlog/src/thread.c

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <pthread.h>
+#include <errno.h>
+
+#include "zc_defs.h"
+#include "event.h"
+#include "buf.h"
+#include "thread.h"
+#include "mdc.h"
+
+void zlog_thread_profile(zlog_thread_t * a_thread, int flag)
+{
+	zc_assert(a_thread,);
+	zc_profile(flag, "--thread[%p][%p][%p][%p,%p,%p,%p,%p]--",
+			a_thread,
+			a_thread->mdc,
+			a_thread->event,
+			a_thread->pre_path_buf,
+			a_thread->path_buf,
+			a_thread->archive_path_buf,
+			a_thread->pre_msg_buf,
+			a_thread->msg_buf);
+
+	zlog_mdc_profile(a_thread->mdc, flag);
+	zlog_event_profile(a_thread->event, flag);
+	zlog_buf_profile(a_thread->pre_path_buf, flag);
+	zlog_buf_profile(a_thread->path_buf, flag);
+	zlog_buf_profile(a_thread->archive_path_buf, flag);
+	zlog_buf_profile(a_thread->pre_msg_buf, flag);
+	zlog_buf_profile(a_thread->msg_buf, flag);
+	return;
+}
+/*******************************************************************************/
+void zlog_thread_del(zlog_thread_t * a_thread)
+{
+	zc_assert(a_thread,);
+	if (a_thread->mdc)
+		zlog_mdc_del(a_thread->mdc);
+	if (a_thread->event)
+		zlog_event_del(a_thread->event);
+	if (a_thread->pre_path_buf)
+		zlog_buf_del(a_thread->pre_path_buf);
+	if (a_thread->path_buf)
+		zlog_buf_del(a_thread->path_buf);
+	if (a_thread->archive_path_buf)
+		zlog_buf_del(a_thread->archive_path_buf);
+	if (a_thread->pre_msg_buf)
+		zlog_buf_del(a_thread->pre_msg_buf);
+	if (a_thread->msg_buf)
+		zlog_buf_del(a_thread->msg_buf);
+
+	zc_debug("zlog_thread_del[%p]", a_thread);
+    free(a_thread);
+	return;
+}
+
+zlog_thread_t *zlog_thread_new(int init_version, size_t buf_size_min, size_t buf_size_max, int time_cache_count)
+{
+	zlog_thread_t *a_thread;
+
+	a_thread = calloc(1, sizeof(zlog_thread_t));
+	if (!a_thread) {
+		zc_error("calloc fail, errno[%d]", errno);
+		return NULL;
+	}
+
+	a_thread->init_version = init_version;
+
+	a_thread->mdc = zlog_mdc_new();
+	if (!a_thread->mdc) {
+		zc_error("zlog_mdc_new fail");
+		goto err;
+	}
+
+	a_thread->event = zlog_event_new(time_cache_count);
+	if (!a_thread->event) {
+		zc_error("zlog_event_new fail");
+		goto err;
+	}
+
+	a_thread->pre_path_buf = zlog_buf_new(MAXLEN_PATH + 1, MAXLEN_PATH + 1, NULL);
+	if (!a_thread->pre_path_buf) {
+		zc_error("zlog_buf_new fail");
+		goto err;
+	}
+
+	a_thread->path_buf = zlog_buf_new(MAXLEN_PATH + 1, MAXLEN_PATH + 1, NULL);
+	if (!a_thread->path_buf) {
+		zc_error("zlog_buf_new fail");
+		goto err;
+	}
+
+	a_thread->archive_path_buf = zlog_buf_new(MAXLEN_PATH + 1, MAXLEN_PATH + 1, NULL);
+	if (!a_thread->archive_path_buf) {
+		zc_error("zlog_buf_new fail");
+		goto err;
+	}
+
+	a_thread->pre_msg_buf = zlog_buf_new(buf_size_min, buf_size_max, "..." FILE_NEWLINE);
+	if (!a_thread->pre_msg_buf) {
+		zc_error("zlog_buf_new fail");
+		goto err;
+	}
+
+	a_thread->msg_buf = zlog_buf_new(buf_size_min, buf_size_max, "..." FILE_NEWLINE);
+	if (!a_thread->msg_buf) {
+		zc_error("zlog_buf_new fail");
+		goto err;
+	}
+
+
+	//zlog_thread_profile(a_thread, ZC_DEBUG);
+	return a_thread;
+err:
+	zlog_thread_del(a_thread);
+	return NULL;
+}
+
+/*******************************************************************************/
+int zlog_thread_rebuild_msg_buf(zlog_thread_t * a_thread, size_t buf_size_min, size_t buf_size_max)
+{
+	zlog_buf_t *pre_msg_buf_new = NULL;
+	zlog_buf_t *msg_buf_new = NULL;
+	zc_assert(a_thread, -1);
+
+	if ( (a_thread->msg_buf->size_min == buf_size_min)
+		&& (a_thread->msg_buf->size_max == buf_size_max)) {
+		zc_debug("buf size not changed, no need rebuild");
+		return 0;
+	}
+
+	pre_msg_buf_new = zlog_buf_new(buf_size_min, buf_size_max, "..." FILE_NEWLINE);
+	if (!pre_msg_buf_new) {
+		zc_error("zlog_buf_new fail");
+		goto err;
+	}
+
+	msg_buf_new = zlog_buf_new(buf_size_min, buf_size_max, "..." FILE_NEWLINE);
+	if (!msg_buf_new) {
+		zc_error("zlog_buf_new fail");
+		goto err;
+	}
+
+	zlog_buf_del(a_thread->pre_msg_buf);
+	a_thread->pre_msg_buf = pre_msg_buf_new;
+
+	zlog_buf_del(a_thread->msg_buf);
+	a_thread->msg_buf = msg_buf_new;
+
+	return 0;
+err:
+	if (pre_msg_buf_new) zlog_buf_del(pre_msg_buf_new);
+	if (msg_buf_new) zlog_buf_del(msg_buf_new);
+	return -1;
+}
+
+int zlog_thread_rebuild_event(zlog_thread_t * a_thread, int time_cache_count)
+{
+	zlog_event_t *event_new = NULL;
+	zc_assert(a_thread, -1);
+
+	event_new = zlog_event_new(time_cache_count);
+	if (!event_new) {
+		zc_error("zlog_event_new fail");
+		goto err;
+	}
+
+	zlog_event_del(a_thread->event);
+	a_thread->event = event_new;
+	return 0;
+err:
+	if (event_new) zlog_event_del(event_new);
+	return -1;
+}
+
+
+/*******************************************************************************/

zlog/src/thread.h

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __zlog_thread_h
+#define  __zlog_thread_h
+
+#include "zc_defs.h"
+#include "event.h"
+#include "buf.h"
+#include "mdc.h"
+
+typedef struct {
+	int init_version;
+	zlog_mdc_t *mdc;
+	zlog_event_t *event;
+
+	zlog_buf_t *pre_path_buf;
+	zlog_buf_t *path_buf;
+	zlog_buf_t *archive_path_buf;
+	zlog_buf_t *pre_msg_buf;
+	zlog_buf_t *msg_buf;
+} zlog_thread_t;
+
+
+void zlog_thread_del(zlog_thread_t * a_thread);
+void zlog_thread_profile(zlog_thread_t * a_thread, int flag);
+zlog_thread_t *zlog_thread_new(int init_version,
+			size_t buf_size_min, size_t buf_size_max, int time_cache_count);
+
+int zlog_thread_rebuild_msg_buf(zlog_thread_t * a_thread, size_t buf_size_min, size_t buf_size_max);
+int zlog_thread_rebuild_event(zlog_thread_t * a_thread, int time_cache_count);
+
+#endif

zlog/src/version.h

+#define ZLOG_VERSION "1.2.12"

zlog/src/zc_arraylist.c

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+#include <errno.h>
+
+#include "zc_defs.h"
+
+zc_arraylist_t *zc_arraylist_new(zc_arraylist_del_fn del)
+{
+	zc_arraylist_t *a_list;
+
+	a_list = (zc_arraylist_t *) calloc(1, sizeof(zc_arraylist_t));
+	if (!a_list) {
+		zc_error("calloc fail, errno[%d]", errno);
+		return NULL;
+	}
+	a_list->size = ARRAY_LIST_DEFAULT_SIZE;
+	a_list->len = 0;
+
+	/* this could be NULL */
+	a_list->del = del;
+	a_list->array = (void **)calloc(a_list->size, sizeof(void *));
+	if (!a_list->array) {
+		zc_error("calloc fail, errno[%d]", errno);
+		free(a_list);
+		return NULL;
+	}
+
+	return a_list;
+}
+
+void zc_arraylist_del(zc_arraylist_t * a_list)
+{
+	int i;
+
+	if (!a_list)
+		return;
+	if (a_list->del) {
+		for (i = 0; i < a_list->len; i++) {
+			if (a_list->array[i])
+				a_list->del(a_list->array[i]);
+		}
+	}
+	if (a_list->array)
+		free(a_list->array);
+	free(a_list);
+	return;
+}
+
+static int zc_arraylist_expand_inner(zc_arraylist_t * a_list, int max)
+{
+	void *tmp;
+	int new_size;
+	int diff_size;
+
+	new_size = zc_max(a_list->size * 2, max);
+	tmp = realloc(a_list->array, new_size * sizeof(void *));
+	if (!tmp) {
+		zc_error("realloc fail, errno[%d]", errno);
+		return -1;
+	}
+	a_list->array = (void **)tmp;
+	diff_size = new_size - a_list->size;
+	if (diff_size) memset(a_list->array + a_list->size, 0x00, diff_size * sizeof(void *));
+	a_list->size = new_size;
+	return 0;
+}
+
+int zc_arraylist_set(zc_arraylist_t * a_list, int idx, void *data)
+{
+	if (idx > a_list->size - 1) {
+		if (zc_arraylist_expand_inner(a_list, idx)) {
+			zc_error("expand_internal fail");
+			return -1;
+		}
+	}
+	if (a_list->array[idx] && a_list->del) a_list->del(a_list->array[idx]);
+	a_list->array[idx] = data;
+	if (a_list->len <= idx)
+		a_list->len = idx + 1;
+	return 0;
+}
+
+int zc_arraylist_add(zc_arraylist_t * a_list, void *data)
+{
+	return zc_arraylist_set(a_list, a_list->len, data);
+}
+
+/* assum idx < len */
+static int zc_arraylist_insert_inner(zc_arraylist_t * a_list, int idx,
+				     void *data)
+{
+	if (a_list->array[idx] == NULL) {
+		a_list->array[idx] = data;
+		return 0;
+	}
+	if (a_list->len > a_list->size - 1) {
+		if (zc_arraylist_expand_inner(a_list, 0)) {
+			zc_error("expand_internal fail");
+			return -1;
+		}
+	}
+	memmove(a_list->array + idx + 1, a_list->array + idx,
+		(a_list->len - idx) * sizeof(void *));
+	a_list->array[idx] = data;
+	a_list->len++;
+	return 0;
+}
+
+int zc_arraylist_sortadd(zc_arraylist_t * a_list, zc_arraylist_cmp_fn cmp,
+			 void *data)
+{
+	int i;
+
+	for (i = 0; i < a_list->len; i++) {
+		if ((*cmp) (a_list->array[i], data) > 0)
+			break;
+	}
+
+	if (i == a_list->len)
+		return zc_arraylist_add(a_list, data);
+	else
+		return zc_arraylist_insert_inner(a_list, i, data);
+}

zlog/src/zc_arraylist.h

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __zc_arraylist_h
+#define __zc_arraylist_h
+
+#define ARRAY_LIST_DEFAULT_SIZE 32
+
+typedef void (*zc_arraylist_del_fn) (void *data);
+typedef int (*zc_arraylist_cmp_fn) (void *data1, void *data2);
+
+/* make zc_arraylist_foreach speed up, so keep struct defination here */
+typedef struct {
+	void **array;
+	int len;
+	int size;
+	zc_arraylist_del_fn del;
+} zc_arraylist_t;
+
+zc_arraylist_t *zc_arraylist_new(zc_arraylist_del_fn del);
+void zc_arraylist_del(zc_arraylist_t * a_list);
+
+int zc_arraylist_set(zc_arraylist_t * a_list, int i, void *data);
+int zc_arraylist_add(zc_arraylist_t * a_list, void *data);
+int zc_arraylist_sortadd(zc_arraylist_t * a_list, zc_arraylist_cmp_fn cmp,
+			 void *data);
+
+#define zc_arraylist_len(a_list)  (a_list->len)
+
+#define zc_arraylist_get(a_list, i) \
+	 ((i >= a_list->len) ? NULL : a_list->array[i])
+
+#define zc_arraylist_foreach(a_list, i, a_unit) \
+	for(i = 0, a_unit = a_list->array[0]; (i < a_list->len) && (a_unit = a_list->array[i], 1) ; i++)
+
+#endif

zlog/src/zc_defs.h

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __zc_defs_h
+#define __zc_defs_h
+
+#include "zc_profile.h"
+#include "zc_arraylist.h"
+#include "zc_hashtable.h"
+#include "zc_xplatform.h"
+#include "zc_util.h"
+
+#endif

zlog/src/zc_hashtable.c

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdlib.h>
+#include <errno.h>
+#include <pthread.h>
+
+#include "zc_defs.h"
+#include "zc_hashtable.h"
+
+struct zc_hashtable_s {
+	size_t nelem;
+
+	zc_hashtable_entry_t **tab;
+	size_t tab_size;
+
+	zc_hashtable_hash_fn hash;
+	zc_hashtable_equal_fn equal;
+	zc_hashtable_del_fn key_del;
+	zc_hashtable_del_fn value_del;
+};
+
+zc_hashtable_t *zc_hashtable_new(size_t a_size,
+				 zc_hashtable_hash_fn hash,
+				 zc_hashtable_equal_fn equal,
+				 zc_hashtable_del_fn key_del,
+				 zc_hashtable_del_fn value_del)
+{
+	zc_hashtable_t *a_table;
+
+	a_table = calloc(1, sizeof(*a_table));
+	if (!a_table) {
+		zc_error("calloc fail, errno[%d]", errno);
+		return NULL;
+	}
+
+	a_table->tab = calloc(a_size, sizeof(*(a_table->tab)));
+	if (!a_table->tab) {
+		zc_error("calloc fail, errno[%d]", errno);
+		free(a_table);
+		return NULL;
+	}
+	a_table->tab_size = a_size;
+
+	a_table->nelem = 0;
+	a_table->hash = hash;
+	a_table->equal = equal;
+
+	/* these two could be NULL */
+	a_table->key_del = key_del;
+	a_table->value_del = value_del;
+
+	return a_table;
+}
+
+void zc_hashtable_del(zc_hashtable_t * a_table)
+{
+	size_t i;
+	zc_hashtable_entry_t *p;
+	zc_hashtable_entry_t *q;
+
+	if (!a_table) {
+		zc_error("a_table[%p] is NULL, just do nothing", a_table);
+		return;
+	}
+
+	for (i = 0; i < a_table->tab_size; i++) {
+		for (p = (a_table->tab)[i]; p; p = q) {
+			q = p->next;
+			if (a_table->key_del) {
+				a_table->key_del(p->key);
+			}
+			if (a_table->value_del) {
+				a_table->value_del(p->value);
+			}
+			free(p);
+		}
+	}
+	if (a_table->tab)
+		free(a_table->tab);
+	free(a_table);
+
+	return;
+}
+
+void zc_hashtable_clean(zc_hashtable_t * a_table)
+{
+	size_t i;
+	zc_hashtable_entry_t *p;
+	zc_hashtable_entry_t *q;
+
+	for (i = 0; i < a_table->tab_size; i++) {
+		for (p = (a_table->tab)[i]; p; p = q) {
+			q = p->next;
+			if (a_table->key_del) {
+				a_table->key_del(p->key);
+			}
+			if (a_table->value_del) {
+				a_table->value_del(p->value);
+			}
+			free(p);
+		}
+		(a_table->tab)[i] = NULL;
+	}
+	a_table->nelem = 0;
+	return;
+}
+
+static int zc_hashtable_rehash(zc_hashtable_t * a_table)
+{
+	size_t i;
+	size_t j;
+	size_t tab_size;
+	zc_hashtable_entry_t **tab;
+	zc_hashtable_entry_t *p;
+	zc_hashtable_entry_t *q;
+
+	tab_size = 2 * a_table->tab_size;
+	tab = calloc(tab_size, sizeof(*tab));
+	if (!tab) {
+		zc_error("calloc fail, errno[%d]", errno);
+		return -1;
+	}
+
+	for (i = 0; i < a_table->tab_size; i++) {
+		for (p = (a_table->tab)[i]; p; p = q) {
+			q = p->next;
+
+			p->next = NULL;
+			p->prev = NULL;
+			j = p->hash_key % tab_size;
+			if (tab[j]) {
+				tab[j]->prev = p;
+				p->next = tab[j];
+			}
+			tab[j] = p;
+		}
+	}
+	free(a_table->tab);
+	a_table->tab = tab;
+	a_table->tab_size = tab_size;
+
+	return 0;
+}
+
+zc_hashtable_entry_t *zc_hashtable_get_entry(zc_hashtable_t * a_table, const void *a_key)
+{
+	unsigned int i;
+	zc_hashtable_entry_t *p;
+
+	i = a_table->hash(a_key) % a_table->tab_size;
+	for (p = (a_table->tab)[i]; p; p = p->next) {
+		if (a_table->equal(a_key, p->key))
+			return p;
+	}
+
+	return NULL;
+}
+
+void *zc_hashtable_get(zc_hashtable_t * a_table, const void *a_key)
+{
+	unsigned int i;
+	zc_hashtable_entry_t *p;
+
+	i = a_table->hash(a_key) % a_table->tab_size;
+	for (p = (a_table->tab)[i]; p; p = p->next) {
+		if (a_table->equal(a_key, p->key))
+			return p->value;
+	}
+
+	return NULL;
+}
+
+int zc_hashtable_put(zc_hashtable_t * a_table, void *a_key, void *a_value)
+{
+	int rc = 0;
+	unsigned int i;
+	zc_hashtable_entry_t *p = NULL;
+
+	i = a_table->hash(a_key) % a_table->tab_size;
+	for (p = (a_table->tab)[i]; p; p = p->next) {
+		if (a_table->equal(a_key, p->key))
+			break;
+	}
+
+	if (p) {
+		if (a_table->key_del) {
+			a_table->key_del(p->key);
+		}
+		if (a_table->value_del) {
+			a_table->value_del(p->value);
+		}
+		p->key = a_key;
+		p->value = a_value;
+		return 0;
+	} else {
+		if (a_table->nelem > a_table->tab_size * 1.3) {
+			rc = zc_hashtable_rehash(a_table);
+			if (rc) {
+				zc_error("rehash fail");
+				return -1;
+			}
+		}
+
+		p = calloc(1, sizeof(*p));
+		if (!p) {
+			zc_error("calloc fail, errno[%d]", errno);
+			return -1;
+		}
+
+		p->hash_key = a_table->hash(a_key);
+		p->key = a_key;
+		p->value = a_value;
+		p->next = NULL;
+		p->prev = NULL;
+
+		i = p->hash_key % a_table->tab_size;
+		if ((a_table->tab)[i]) {
+			(a_table->tab)[i]->prev = p;
+			p->next = (a_table->tab)[i];
+		}
+		(a_table->tab)[i] = p;
+		a_table->nelem++;
+	}
+
+	return 0;
+}
+
+void zc_hashtable_remove(zc_hashtable_t * a_table, const void *a_key)
+{
+	zc_hashtable_entry_t *p;
+	unsigned int i;
+
+        if (!a_table || !a_key) {
+		zc_error("a_table[%p] or a_key[%p] is NULL, just do nothing", a_table, a_key);
+		return;
+        }
+
+	i = a_table->hash(a_key) % a_table->tab_size;
+	for (p = (a_table->tab)[i]; p; p = p->next) {
+		if (a_table->equal(a_key, p->key))
+			break;
+	}
+
+	if (!p) {
+		zc_error("p[%p] not found in hashtable", p);
+		return;
+	}
+
+	if (a_table->key_del) {
+		a_table->key_del(p->key);
+	}
+	if (a_table->value_del) {
+		a_table->value_del(p->value);
+	}
+
+	if (p->next) {
+		p->next->prev = p->prev;
+	}
+	if (p->prev) {
+		p->prev->next = p->next;
+	} else {
+		unsigned int i;
+
+		i = p->hash_key % a_table->tab_size;
+		a_table->tab[i] = p->next;
+	}
+
+	free(p);
+	a_table->nelem--;
+
+	return;
+}
+
+zc_hashtable_entry_t *zc_hashtable_begin(zc_hashtable_t * a_table)
+{
+	size_t i;
+	zc_hashtable_entry_t *p;
+
+	for (i = 0; i < a_table->tab_size; i++) {
+		for (p = (a_table->tab)[i]; p; p = p->next) {
+			if (p)
+				return p;
+		}
+	}
+
+	return NULL;
+}
+
+zc_hashtable_entry_t *zc_hashtable_next(zc_hashtable_t * a_table, zc_hashtable_entry_t * a_entry)
+{
+	size_t i;
+	size_t j;
+
+	if (a_entry->next)
+		return a_entry->next;
+
+	i = a_entry->hash_key % a_table->tab_size;
+
+	for (j = i + 1; j < a_table->tab_size; j++) {
+		if ((a_table->tab)[j]) {
+			return (a_table->tab)[j];
+		}
+	}
+
+	return NULL;
+}
+
+/*******************************************************************************/
+
+unsigned int zc_hashtable_str_hash(const void *str)
+{
+	unsigned int h = 5381;
+	const char *p = (const char *)str;
+
+	while (*p != '\0')
+		h = ((h << 5) + h) + (*p++); /* hash * 33 + c */
+
+	return h;
+}
+
+int zc_hashtable_str_equal(const void *key1, const void *key2)
+{
+	return (STRCMP((const char *)key1, ==, (const char *)key2));
+}

zlog/src/zc_hashtable.h

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __zc_hashtalbe_h
+#define __zc_hashtalbe_h
+
+#include <stdlib.h>
+
+typedef struct zc_hashtable_entry_s {
+	unsigned int hash_key;
+	void *key;
+	void *value;
+	struct zc_hashtable_entry_s *prev;
+	struct zc_hashtable_entry_s *next;
+} zc_hashtable_entry_t;
+
+typedef struct zc_hashtable_s zc_hashtable_t;
+
+typedef unsigned int (*zc_hashtable_hash_fn) (const void *key);
+typedef int (*zc_hashtable_equal_fn) (const void *key1, const void *key2);
+typedef void (*zc_hashtable_del_fn) (void *kv);
+
+zc_hashtable_t *zc_hashtable_new(size_t a_size,
+				 zc_hashtable_hash_fn hash_fn,
+				 zc_hashtable_equal_fn equal_fn,
+				 zc_hashtable_del_fn key_del_fn,
+				 zc_hashtable_del_fn value_del_fn);
+
+void zc_hashtable_del(zc_hashtable_t * a_table);
+void zc_hashtable_clean(zc_hashtable_t * a_table);
+int zc_hashtable_put(zc_hashtable_t * a_table, void *a_key, void *a_value);
+zc_hashtable_entry_t *zc_hashtable_get_entry(zc_hashtable_t * a_table, const void *a_key);
+void *zc_hashtable_get(zc_hashtable_t * a_table, const void *a_key);
+void zc_hashtable_remove(zc_hashtable_t * a_table, const void *a_key);
+zc_hashtable_entry_t *zc_hashtable_begin(zc_hashtable_t * a_table);
+zc_hashtable_entry_t *zc_hashtable_next(zc_hashtable_t * a_table, zc_hashtable_entry_t * a_entry);
+
+#define zc_hashtable_foreach(a_table, a_entry) \
+for(a_entry = zc_hashtable_begin(a_table); a_entry; a_entry = zc_hashtable_next(a_table, a_entry))
+
+unsigned int zc_hashtable_str_hash(const void *str);
+int zc_hashtable_str_equal(const void *key1, const void *key2);
+
+#endif

zlog/src/zc_profile.c

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "fmacros.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <stdarg.h>
+#include <time.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "zc_profile.h"
+#include "zc_xplatform.h"
+
+static void zc_time(char *time_str, size_t time_str_size)
+{
+	time_t tt;
+
+	time(&tt);
+#ifdef _WIN32
+	struct tm *local_time;
+	local_time = localtime(&tt);
+	strftime(time_str, time_str_size, "%m-%d %H:%M:%S", local_time);
+#else
+	struct tm local_time;
+	localtime_r(&tt, &local_time);
+	strftime(time_str, time_str_size, "%m-%d %H:%M:%S", &local_time);
+#endif
+
+	return;
+}
+
+int zc_profile_inner(int flag, const char *file, const long line, const char *fmt, ...)
+{
+	va_list args;
+	char time_str[20 + 1];
+	FILE *fp = NULL;
+
+	static char *debug_log = NULL;
+	static char *error_log = NULL;
+	static size_t init_flag = 0;
+
+	if (!init_flag) {
+		init_flag = 1;
+		debug_log = getenv("ZLOG_PROFILE_DEBUG");
+		error_log = getenv("ZLOG_PROFILE_ERROR");
+	}
+
+	switch (flag) {
+	case ZC_DEBUG:
+ 		if (debug_log == NULL) return 0;
+		fp = fopen(debug_log, "a");
+		if (!fp) return -1;
+		zc_time(time_str, sizeof(time_str));
+		fprintf(fp, "%s DEBUG (%d:%s:%ld) ", time_str, getpid(), file, line);
+		break;
+	case ZC_WARN:
+ 		if (error_log == NULL) return 0;
+		fp = fopen(error_log, "a");
+		if (!fp) return -1;
+		zc_time(time_str, sizeof(time_str));
+		fprintf(fp, "%s WARN  (%d:%s:%ld) ", time_str, getpid(), file, line);
+		break;
+	case ZC_ERROR:
+ 		if (error_log == NULL) return 0;
+		fp = fopen(error_log, "a");
+		if (!fp) return -1;
+		zc_time(time_str, sizeof(time_str));
+		fprintf(fp, "%s ERROR (%d:%s:%ld) ", time_str, getpid(), file, line);
+		break;
+	}
+
+	/* writing file twice(time & msg) is not atomic
+	 * may cause cross
+	 * but avoid log size limit */
+	va_start(args, fmt);
+	vfprintf(fp, fmt, args);
+	va_end(args);
+	fprintf(fp, "\n");
+
+	fclose(fp);
+	return 0;
+}
+

zlog/src/zc_profile.h

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __zc_profile_h
+#define __zc_profile_h
+
+#include <stdarg.h>
+
+#define EMPTY()
+#define zc_assert(expr, rv) \
+	if(!(expr)) { \
+		zc_error(#expr" is null or 0"); \
+		return rv; \
+	} 
+
+enum zc_profile_flag {
+	ZC_DEBUG = 0,
+	ZC_WARN = 1,
+	ZC_ERROR = 2
+};
+
+
+#if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
+	#define zc_debug(...) \
+		zc_profile_inner(ZC_DEBUG, __FILE__, __LINE__, __VA_ARGS__)
+	#define zc_warn(...) \
+		zc_profile_inner(ZC_WARN, __FILE__, __LINE__, __VA_ARGS__)
+	#define zc_error(...) \
+		zc_profile_inner(ZC_ERROR, __FILE__, __LINE__, __VA_ARGS__)
+	#define zc_profile(flag, ...) \
+		zc_profile_inner(flag, __FILE__, __LINE__, __VA_ARGS__)
+#elif defined __GNUC__
+	#define zc_debug(fmt, args...) \
+		zc_profile_inner(ZC_DEBUG, __FILE__, __LINE__, fmt, ## args)
+	#define zc_warn(fmt, args...) \
+		zc_profile_inner(ZC_WARN, __FILE__, __LINE__, fmt, ## args)
+	#define zc_error(fmt, args...) \
+		zc_profile_inner(ZC_ERROR, __FILE__, __LINE__, fmt, ## args)
+	#define zc_profile(flag, fmt, args...) \
+		zc_profile_inner(flag, __FILE__, __LINE__, fmt, ## args)
+#endif
+
+
+int zc_profile_inner(int flag, 
+		const char *file, const long line,
+		const char *fmt, ...);
+
+#endif

zlog/src/zc_util.c

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <stdio.h>
+#include <errno.h>
+
+#include "zc_defs.h"
+
+size_t zc_parse_byte_size(char *astring)
+{
+	/* Parse size in bytes depending on the suffix.   Valid suffixes are KB, MB and GB */
+	char *p;
+	char *q;
+	size_t sz;
+	long res;
+	int c, m;
+
+	zc_assert(astring, 0);
+
+	/* clear space */
+	for (p = q = astring; *p != '\0'; p++) {
+		if (isspace(*p)) {
+			continue;
+		} else {
+			*q = *p;
+			q++;
+		}
+	}
+	*q = '\0';
+
+	sz = strlen(astring);
+	res = strtol(astring, (char **)NULL, 10);
+
+	if (res <= 0)
+		return 0;
+
+	if (astring[sz - 1] == 'B' || astring[sz - 1] == 'b') {
+		c = astring[sz - 2];
+		m = 1024;
+	} else {
+		c = astring[sz - 1];
+		m = 1000;
+	}
+
+	switch (c) {
+	case 'K':
+	case 'k':
+		res *= m;
+		break;
+	case 'M':
+	case 'm':
+		res *= m * m;
+		break;
+	case 'G':
+	case 'g':
+		res *= m * m * m;
+		break;
+	default:
+		if (!isdigit(c)) {
+			zc_error("Wrong suffix parsing " "size in bytes for string [%s], ignoring suffix",
+				 astring);
+		}
+		break;
+	}
+
+	return (res);
+}
+
+/*******************************************************************************/
+int zc_str_replace_env(char *str, size_t str_size)
+{
+	char *p;
+	char *q;
+	char fmt[MAXLEN_CFG_LINE + 1];
+	char env_key[MAXLEN_CFG_LINE + 1];
+	char env_value[MAXLEN_CFG_LINE + 1];
+	int str_len;
+	int env_value_len;
+	int nscan;
+	int nread;
+
+	str_len = strlen(str);
+	q = str;
+
+	do {
+		p = strchr(q, '%');
+		if (!p) {
+			/* can't find more % */
+			break;
+		}
+
+		memset(fmt, 0x00, sizeof(fmt));
+		memset(env_key, 0x00, sizeof(env_key));
+		memset(env_value, 0x00, sizeof(env_value));
+		nread = 0;
+		nscan = sscanf(p + 1, "%[.0-9-]%n", fmt + 1, &nread);
+		if (nscan == 1) {
+			fmt[0] = '%';
+			fmt[nread + 1] = 's';
+		} else {
+			nread = 0;
+			strcpy(fmt, "%s");
+		}
+
+		q = p + 1 + nread;
+
+		nscan = sscanf(q, "E(%[^)])%n", env_key, &nread);
+		if (nscan == 0) {
+			continue;
+		}
+
+		q += nread;
+
+		if (*(q - 1) != ')') {
+			zc_error("in string[%s] can't find match )", p);
+			return -1;
+		}
+
+		env_value_len = snprintf(env_value, sizeof(env_value), fmt, getenv(env_key));
+		if (env_value_len < 0 || env_value_len >= sizeof(env_value)) {
+			zc_error("snprintf fail, errno[%d], evn_value_len[%d]",
+				 errno, env_value_len);
+			return -1;
+		}
+
+		str_len = str_len - (q - p) + env_value_len;
+		if (str_len > str_size - 1) {
+			zc_error("repalce env_value[%s] cause overlap", env_value);
+			return -1;
+		}
+
+		memmove(p + env_value_len, q, strlen(q) + 1);
+		memcpy(p, env_value, env_value_len);
+
+	} while (1);
+
+	return 0;
+}

zlog/src/zc_util.h

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef __zc_util_h
+#define __zc_util_h
+
+size_t zc_parse_byte_size(char *astring);
+int zc_str_replace_env(char *str, size_t str_size);
+
+#define zc_max(a,b) ((a) > (b) ? (a) : (b))
+#define zc_min(a,b) ((a) < (b) ? (a) : (b))
+
+#endif

zlog/src/zc_xplatform.h

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef __zc_xplatform_h
+#define __zc_xplatform_h
+
+#include <limits.h>
+
+#define ZLOG_INT32_LEN   sizeof("-2147483648") - 1
+#define ZLOG_INT64_LEN   sizeof("-9223372036854775808") - 1
+
+#if ((__GNU__ == 2) && (__GNUC_MINOR__ < 8))
+#define ZLOG_MAX_UINT32_VALUE  (uint32_t) 0xffffffffLL
+#else
+#define ZLOG_MAX_UINT32_VALUE  (uint32_t) 0xffffffff
+#endif
+
+#define ZLOG_MAX_INT32_VALUE   (uint32_t) 0x7fffffff
+
+#define MAXLEN_PATH 1024
+#define MAXLEN_CFG_LINE (MAXLEN_PATH * 4)
+#define MAXLINES_NO 128
+
+#define FILE_NEWLINE "\n"
+#define FILE_NEWLINE_LEN 1
+
+#include <string.h>
+#include <strings.h>
+
+#define STRCMP(_a_,_C_,_b_) ( strcmp(_a_,_b_) _C_ 0 )
+#define STRNCMP(_a_,_C_,_b_,_n_) ( strncmp(_a_,_b_,_n_) _C_ 0 )
+#define STRICMP(_a_,_C_,_b_) ( strcasecmp(_a_,_b_) _C_ 0 )
+#define STRNICMP(_a_,_C_,_b_,_n_) ( strncasecmp(_a_,_b_,_n_) _C_ 0 )
+
+
+#ifdef __APPLE__
+#include <AvailabilityMacros.h>
+#endif
+
+/* Define zlog_fstat to fstat or fstat64() */
+#if defined(__APPLE__) && !defined(MAC_OS_X_VERSION_10_6)
+#define zlog_fstat fstat64
+#define zlog_stat stat64
+#elif defined(_WIN32)
+#define zlog_fstat _fstat
+#define zlog_stat _stat
+#else
+#define zlog_fstat fstat
+#define zlog_stat stat
+#endif
+
+/* Define zlog_fsync to fdatasync() in Linux and fsync() for all the rest */
+#ifdef __linux__
+#define zlog_fsync fdatasync
+#else
+#define zlog_fsync fsync
+#endif
+
+
+
+#endif

zlog/src/zlog-chk-conf.c

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "fmacros.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+
+#include <unistd.h>
+
+#include "zlog.h"
+#include "version.h"
+
+
+int main(int argc, char *argv[])
+{
+	int rc = 0;
+	int op;
+	int quiet = 0;
+	static const char *help = 
+		"usage: zlog-chk-conf [conf files]...\n"
+		"\t-q,\tsuppress non-error message\n"
+		"\t-h,\tshow help message\n"
+		"zlog version: " ZLOG_VERSION "\n";
+
+	while((op = getopt(argc, argv, "qhv")) > 0) {
+		if (op == 'h') {
+			fputs(help, stdout);
+			return 0;
+		} else if (op == 'q') {
+			quiet = 1;
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (argc == 0) {
+		fputs(help, stdout);
+		return -1;
+	}
+
+	setenv("ZLOG_PROFILE_ERROR", "/dev/stderr", 1);
+	setenv("ZLOG_CHECK_FORMAT_RULE", "1", 1);
+
+	while (argc > 0) {
+		rc = zlog_init(*argv);
+		if (rc) {
+			printf("\n---[%s] syntax error, see error message above\n",
+				*argv);
+			exit(2);
+		} else {
+			zlog_fini();
+			if (!quiet) {
+				printf("--[%s] syntax right\n", *argv);
+			}
+		}
+		argc--;
+		argv++;
+	}
+
+	exit(0);
+}

zlog/src/zlog.c

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "fmacros.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <pthread.h>
+
+#include "conf.h"
+#include "category_table.h"
+#include "record_table.h"
+#include "mdc.h"
+#include "zc_defs.h"
+#include "rule.h"
+#include "version.h"
+
+/*******************************************************************************/
+extern char *zlog_git_sha1;
+/*******************************************************************************/
+static pthread_rwlock_t zlog_env_lock = PTHREAD_RWLOCK_INITIALIZER;
+zlog_conf_t *zlog_env_conf;
+static pthread_key_t zlog_thread_key;
+static zc_hashtable_t *zlog_env_categories;
+static zc_hashtable_t *zlog_env_records;
+static zlog_category_t *zlog_default_category;
+static size_t zlog_env_reload_conf_count;
+static int zlog_env_is_init = 0;
+static int zlog_env_init_version = 0;
+/*******************************************************************************/
+/* inner no need thread-safe */
+static void zlog_fini_inner(void)
+{
+	/* pthread_key_delete(zlog_thread_key); */
+	/* never use pthread_key_delete,
+	 * it will cause other thread can't release zlog_thread_t 
+	 * after one thread call pthread_key_delete
+	 * also key not init will cause a core dump
+	 */
+	
+	if (zlog_env_categories) zlog_category_table_del(zlog_env_categories);
+	zlog_env_categories = NULL;
+	zlog_default_category = NULL;
+	if (zlog_env_records) zlog_record_table_del(zlog_env_records);
+	zlog_env_records = NULL;
+	if (zlog_env_conf) zlog_conf_del(zlog_env_conf);
+	zlog_env_conf = NULL;
+	return;
+}
+
+static void zlog_clean_rest_thread(void)
+{
+	int rc;
+
+	zlog_thread_t *a_thread;
+	a_thread = pthread_getspecific(zlog_thread_key);
+	if (!a_thread) return;
+	zlog_thread_del(a_thread);
+
+	rc = pthread_setspecific(zlog_thread_key, NULL);
+	if (rc) {
+		zc_error("pthread_setspecific fail, rc[%d]", rc);
+		return;
+	}
+	return;
+}
+
+static int zlog_init_inner_from_string(const char *config_string)
+{
+    int rc = 0;
+
+    /* the 1st time in the whole process do init */
+    if (zlog_env_init_version == 0) {
+        /* clean up is done by OS when a thread call pthread_exit */
+        rc = pthread_key_create(&zlog_thread_key, (void (*) (void *)) zlog_thread_del);
+        if (rc) {
+            zc_error("pthread_key_create fail, rc[%d]", rc);
+            goto err;
+        }
+
+        /* if some thread do not call pthread_exit, like main thread
+         * atexit will clean it
+         */
+        rc = atexit(zlog_clean_rest_thread);
+        if (rc) {
+            zc_error("atexit fail, rc[%d]", rc);
+            goto err;
+        }
+        zlog_env_init_version++;
+    } /* else maybe after zlog_fini() and need not create pthread_key */
+
+    zlog_env_conf = zlog_conf_new_from_string(config_string);
+    if (!zlog_env_conf) {
+        zc_error("zlog_conf_new[%s] fail", config_string);
+        goto err;
+    }
+
+    zlog_env_categories = zlog_category_table_new();
+    if (!zlog_env_categories) {
+        zc_error("zlog_category_table_new fail");
+        goto err;
+    }
+
+    zlog_env_records = zlog_record_table_new();
+    if (!zlog_env_records) {
+        zc_error("zlog_record_table_new fail");
+        goto err;
+    }
+
+    return 0;
+err:
+    zlog_fini_inner();
+    return -1;
+}
+static int zlog_init_inner(const char *config)
+{
+	int rc = 0;
+
+	/* the 1st time in the whole process do init */
+	if (zlog_env_init_version == 0) {
+		/* clean up is done by OS when a thread call pthread_exit */
+		rc = pthread_key_create(&zlog_thread_key, (void (*) (void *)) zlog_thread_del);
+		if (rc) {
+			zc_error("pthread_key_create fail, rc[%d]", rc);
+			goto err;
+		}
+
+		/* if some thread do not call pthread_exit, like main thread
+		 * atexit will clean it 
+		 */
+		rc = atexit(zlog_clean_rest_thread);
+		if (rc) {
+			zc_error("atexit fail, rc[%d]", rc);
+			goto err;
+		}
+		zlog_env_init_version++;
+	} /* else maybe after zlog_fini() and need not create pthread_key */
+
+	zlog_env_conf = zlog_conf_new(config);
+	if (!zlog_env_conf) {
+		zc_error("zlog_conf_new[%s] fail", config);
+		goto err;
+	}
+
+	zlog_env_categories = zlog_category_table_new();
+	if (!zlog_env_categories) {
+		zc_error("zlog_category_table_new fail");
+		goto err;
+	}
+
+	zlog_env_records = zlog_record_table_new();
+	if (!zlog_env_records) {
+		zc_error("zlog_record_table_new fail");
+		goto err;
+	}
+
+	return 0;
+err:
+	zlog_fini_inner();
+	return -1;
+}
+
+/*******************************************************************************/
+int zlog_init(const char *config)
+{
+	int rc;
+	zc_debug("------zlog_init start------");
+	zc_debug("------compile time[%s %s], version[%s]------", __DATE__, __TIME__, ZLOG_VERSION);
+
+	rc = pthread_rwlock_wrlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_wrlock fail, rc[%d]", rc);
+		return -1;
+	}
+
+	if (zlog_env_is_init) {
+		zc_error("already init, use zlog_reload pls");
+		goto err;
+	}
+
+
+	if (zlog_init_inner(config)) {
+		zc_error("zlog_init_inner[%s] fail", config);
+		goto err;
+	}
+
+	zlog_env_is_init = 1;
+	zlog_env_init_version++;
+
+	zc_debug("------zlog_init success end------");
+	rc = pthread_rwlock_unlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_unlock fail, rc=[%d]", rc);
+		return -1;
+	}
+	return 0;
+err:
+	zc_error("------zlog_init fail end------");
+	rc = pthread_rwlock_unlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_unlock fail, rc=[%d]", rc);
+		return -1;
+	}
+	return -1;
+}
+
+int zlog_init_from_string(const char *config_string)
+{
+    int rc;
+    zc_debug("------zlog_init start------");
+    zc_debug("------compile time[%s %s], version[%s]------", __DATE__, __TIME__, ZLOG_VERSION);
+
+    rc = pthread_rwlock_wrlock(&zlog_env_lock);
+    if (rc) {
+        zc_error("pthread_rwlock_wrlock fail, rc[%d]", rc);
+        return -1;
+    }
+
+    if (zlog_env_is_init) {
+        zc_error("already init, use zlog_reload pls");
+        goto err;
+    }
+
+
+    if (zlog_init_inner_from_string(config_string)) {
+        zc_error("zlog_init_inner[%s] fail", config_string);
+        goto err;
+    }
+
+    zlog_env_is_init = 1;
+    zlog_env_init_version++;
+
+    zc_debug("------zlog_init success end------");
+    rc = pthread_rwlock_unlock(&zlog_env_lock);
+    if (rc) {
+        zc_error("pthread_rwlock_unlock fail, rc=[%d]", rc);
+        return -1;
+    }
+    return 0;
+    err:
+    zc_error("------zlog_init fail end------");
+    rc = pthread_rwlock_unlock(&zlog_env_lock);
+    if (rc) {
+        zc_error("pthread_rwlock_unlock fail, rc=[%d]", rc);
+        return -1;
+    }
+    return -1;
+}
+int dzlog_init(const char *config, const char *cname)
+{
+	int rc = 0;
+	zc_debug("------dzlog_init start------");
+	zc_debug("------compile time[%s %s], version[%s]------",
+			__DATE__, __TIME__, ZLOG_VERSION);
+
+	rc = pthread_rwlock_wrlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_wrlock fail, rc[%d]", rc);
+		return -1;
+	}
+
+	if (zlog_env_is_init) {
+		zc_error("already init, use zlog_reload pls");
+		goto err;
+	}
+
+	if (zlog_init_inner(config)) {
+		zc_error("zlog_init_inner[%s] fail", config);
+		goto err;
+	}
+
+	zlog_default_category = zlog_category_table_fetch_category(
+				zlog_env_categories,
+				cname,
+				zlog_env_conf->rules);
+	if (!zlog_default_category) {
+		zc_error("zlog_category_table_fetch_category[%s] fail", cname);
+		goto err;
+	}
+
+	zlog_env_is_init = 1;
+	zlog_env_init_version++;
+
+	zc_debug("------dzlog_init success end------");
+	rc = pthread_rwlock_unlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_unlock fail, rc=[%d]", rc);
+		return -1;
+	}
+	return 0;
+err:
+	zc_error("------dzlog_init fail end------");
+	rc = pthread_rwlock_unlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_unlock fail, rc=[%d]", rc);
+		return -1;
+	}
+	return -1;
+}
+/*******************************************************************************/
+int zlog_reload(const char *config)
+{
+	int rc = 0;
+	int i = 0;
+	zlog_conf_t *new_conf = NULL;
+	zlog_rule_t *a_rule;
+	int c_up = 0;
+
+	zc_debug("------zlog_reload start------");
+	rc = pthread_rwlock_wrlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_wrlock fail, rc[%d]", rc);
+		return -1;
+	}
+
+	if (!zlog_env_is_init) {
+		zc_error("never call zlog_init() or dzlog_init() before");
+		goto quit;
+	}
+
+	/* use last conf file */
+	if (config == NULL) config = zlog_env_conf->file;
+
+	/* reach reload period */
+	if (config == (char*)-1) {
+		/* test again, avoid other threads already reloaded */
+		if (zlog_env_reload_conf_count > zlog_env_conf->reload_conf_period) {
+			config = zlog_env_conf->file;
+		} else {
+			/* do nothing, already done */
+			goto quit;
+		}
+	}
+
+	/* reset counter, whether automaticlly or mannually */
+	zlog_env_reload_conf_count = 0;
+
+	new_conf = zlog_conf_new(config);
+	if (!new_conf) {
+		zc_error("zlog_conf_new fail");
+		goto err;
+	}
+
+	zc_arraylist_foreach(new_conf->rules, i, a_rule) {
+		zlog_rule_set_record(a_rule, zlog_env_records);
+	}
+
+	if (zlog_category_table_update_rules(zlog_env_categories, new_conf->rules)) {
+		c_up = 0;
+		zc_error("zlog_category_table_update fail");
+		goto err;
+	} else {
+		c_up = 1;
+	}
+
+	zlog_env_init_version++;
+
+	if (c_up) zlog_category_table_commit_rules(zlog_env_categories);
+	zlog_conf_del(zlog_env_conf);
+	zlog_env_conf = new_conf;
+	zc_debug("------zlog_reload success, total init verison[%d] ------", zlog_env_init_version);
+	rc = pthread_rwlock_unlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_unlock fail, rc=[%d]", rc);
+		return -1;
+	}
+	return 0;
+err:
+	/* fail, roll back everything */
+	zc_warn("zlog_reload fail, use old conf file, still working");
+	if (new_conf) zlog_conf_del(new_conf);
+	if (c_up) zlog_category_table_rollback_rules(zlog_env_categories);
+	zc_error("------zlog_reload fail, total init version[%d] ------", zlog_env_init_version);
+	rc = pthread_rwlock_unlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_unlock fail, rc=[%d]", rc);
+		return -1;
+	}
+	return -1;
+quit:
+	zc_debug("------zlog_reload do nothing------");
+	rc = pthread_rwlock_unlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_unlock fail, rc=[%d]", rc);
+		return -1;
+	}
+	return 0;
+}
+/*******************************************************************************/
+int zlog_reload_from_string(const char *conf_string)
+{
+    int rc = 0;
+    int i = 0;
+    zlog_conf_t *new_conf = NULL;
+    zlog_rule_t *a_rule;
+    int c_up = 0;
+
+    zc_debug("------zlog_reload start------");
+    rc = pthread_rwlock_wrlock(&zlog_env_lock);
+    if (rc) {
+        zc_error("pthread_rwlock_wrlock fail, rc[%d]", rc);
+        return -1;
+    }
+
+    if (!zlog_env_is_init) {
+        zc_error("never call zlog_init() or dzlog_init() before");
+        goto quit;
+    }
+
+    if (conf_string == NULL) goto quit;
+
+    new_conf = zlog_conf_new_from_string(conf_string);
+    if (!new_conf) {
+        zc_error("zlog_conf_new fail");
+        goto err;
+    }
+
+    zc_arraylist_foreach(new_conf->rules, i, a_rule) {
+        zlog_rule_set_record(a_rule, zlog_env_records);
+    }
+
+    if (zlog_category_table_update_rules(zlog_env_categories, new_conf->rules)) {
+        c_up = 0;
+        zc_error("zlog_category_table_update fail");
+        goto err;
+    } else {
+        c_up = 1;
+    }
+
+    zlog_env_init_version++;
+
+    if (c_up) zlog_category_table_commit_rules(zlog_env_categories);
+    zlog_conf_del(zlog_env_conf);
+    zlog_env_conf = new_conf;
+    zc_debug("------zlog_reload success, total init verison[%d] ------", zlog_env_init_version);
+    rc = pthread_rwlock_unlock(&zlog_env_lock);
+    if (rc) {
+        zc_error("pthread_rwlock_unlock fail, rc=[%d]", rc);
+        return -1;
+    }
+    return 0;
+err:
+    /* fail, roll back everything */
+    zc_warn("zlog_reload fail, use old conf file, still working");
+    if (new_conf) zlog_conf_del(new_conf);
+    if (c_up) zlog_category_table_rollback_rules(zlog_env_categories);
+    zc_error("------zlog_reload fail, total init version[%d] ------", zlog_env_init_version);
+    rc = pthread_rwlock_unlock(&zlog_env_lock);
+    if (rc) {
+        zc_error("pthread_rwlock_unlock fail, rc=[%d]", rc);
+        return -1;
+    }
+    return -1;
+quit:
+    zc_debug("------zlog_reload do nothing------");
+    rc = pthread_rwlock_unlock(&zlog_env_lock);
+    if (rc) {
+        zc_error("pthread_rwlock_unlock fail, rc=[%d]", rc);
+        return -1;
+    }
+    return 0;
+}
+/*******************************************************************************/
+void zlog_fini(void)
+{
+	int rc = 0;
+
+	zc_debug("------zlog_fini start------");
+	rc = pthread_rwlock_wrlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_wrlock fail, rc[%d]", rc);
+		return;
+	}
+
+	if (!zlog_env_is_init) {
+		zc_error("before finish, must zlog_init() or dzlog_init() first");
+		goto exit;
+	}
+
+	zlog_fini_inner();
+	zlog_env_is_init = 0;
+
+exit:
+	zc_debug("------zlog_fini end------");
+	rc = pthread_rwlock_unlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_unlock fail, rc=[%d]", rc);
+		return;
+	}
+	return;
+}
+/*******************************************************************************/
+zlog_category_t *zlog_get_category(const char *cname)
+{
+	int rc = 0;
+	zlog_category_t *a_category = NULL;
+
+	zc_assert(cname, NULL);
+	zc_debug("------zlog_get_category[%s] start------", cname);
+	rc = pthread_rwlock_wrlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_wrlock fail, rc[%d]", rc);
+		return NULL;
+	}
+
+	if (!zlog_env_is_init) {
+		zc_error("never call zlog_init() or dzlog_init() before");
+		a_category = NULL;
+		goto err;
+	}
+
+	a_category = zlog_category_table_fetch_category(
+				zlog_env_categories,
+				cname,
+				zlog_env_conf->rules);
+	if (!a_category) {
+		zc_error("zlog_category_table_fetch_category[%s] fail", cname);
+		goto err;
+	}
+
+	zc_debug("------zlog_get_category[%s] success, end------ ", cname);
+	rc = pthread_rwlock_unlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_unlock fail, rc=[%d]", rc);
+		return NULL;
+	}
+	return a_category;
+err:
+	zc_error("------zlog_get_category[%s] fail, end------ ", cname);
+	rc = pthread_rwlock_unlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_unlock fail, rc=[%d]", rc);
+		return NULL;
+	}
+	return NULL;
+}
+
+int dzlog_set_category(const char *cname)
+{
+	int rc = 0;
+	zc_assert(cname, -1);
+
+	zc_debug("------dzlog_set_category[%s] start------", cname);
+	rc = pthread_rwlock_wrlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_wrlock fail, rc[%d]", rc);
+		return -1;
+	}
+
+	if (!zlog_env_is_init) {
+		zc_error("never call zlog_init() or dzlog_init() before");
+		goto err;
+	}
+
+	zlog_default_category = zlog_category_table_fetch_category(
+				zlog_env_categories,
+				cname,
+				zlog_env_conf->rules);
+	if (!zlog_default_category) {
+		zc_error("zlog_category_table_fetch_category[%s] fail", cname);
+		goto err;
+	}
+
+	zc_debug("------dzlog_set_category[%s] end, success------ ", cname);
+	rc = pthread_rwlock_unlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_unlock fail, rc=[%d]", rc);
+		return -1;
+	}
+	return 0;
+err:
+	zc_error("------dzlog_set_category[%s] end, fail------ ", cname);
+	rc = pthread_rwlock_unlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_unlock fail, rc=[%d]", rc);
+		return -1;
+	}
+	return -1;
+}
+/*******************************************************************************/
+#define zlog_fetch_thread(a_thread, fail_goto) do {  \
+	int rd = 0;  \
+	a_thread = pthread_getspecific(zlog_thread_key);  \
+	if (!a_thread) {  \
+		a_thread = zlog_thread_new(zlog_env_init_version,  \
+				zlog_env_conf->buf_size_min, zlog_env_conf->buf_size_max, \
+				zlog_env_conf->time_cache_count); \
+		if (!a_thread) {  \
+			zc_error("zlog_thread_new fail");  \
+			goto fail_goto;  \
+		}  \
+  \
+		rd = pthread_setspecific(zlog_thread_key, a_thread);  \
+		if (rd) {  \
+			zlog_thread_del(a_thread);  \
+			zc_error("pthread_setspecific fail, rd[%d]", rd);  \
+			goto fail_goto;  \
+		}  \
+	}  \
+  \
+	if (a_thread->init_version != zlog_env_init_version) {  \
+		/* as mdc is still here, so can not easily del and new */ \
+		rd = zlog_thread_rebuild_msg_buf(a_thread, \
+				zlog_env_conf->buf_size_min, \
+				zlog_env_conf->buf_size_max);  \
+		if (rd) {  \
+			zc_error("zlog_thread_resize_msg_buf fail, rd[%d]", rd);  \
+			goto fail_goto;  \
+		}  \
+  \
+		rd = zlog_thread_rebuild_event(a_thread, zlog_env_conf->time_cache_count);  \
+		if (rd) {  \
+			zc_error("zlog_thread_resize_msg_buf fail, rd[%d]", rd);  \
+			goto fail_goto;  \
+		}  \
+		a_thread->init_version = zlog_env_init_version;  \
+	}  \
+} while (0)
+
+/*******************************************************************************/
+int zlog_put_mdc(const char *key, const char *value)
+{
+	int rc = 0;
+	zlog_thread_t *a_thread;
+
+	zc_assert(key, -1);
+	zc_assert(value, -1);
+
+	rc = pthread_rwlock_rdlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_wrlock fail, rc[%d]", rc);
+		return -1;
+	}
+
+	if (!zlog_env_is_init) {
+		zc_error("never call zlog_init() or dzlog_init() before");
+		goto err;
+	}
+
+	zlog_fetch_thread(a_thread, err);
+
+	if (zlog_mdc_put(a_thread->mdc, key, value)) {
+		zc_error("zlog_mdc_put fail, key[%s], value[%s]", key, value);
+		goto err;
+	}
+
+	rc = pthread_rwlock_unlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_unlock fail, rc=[%d]", rc);
+		return -1;
+	}
+	return 0;
+err:
+	rc = pthread_rwlock_unlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_unlock fail, rc=[%d]", rc);
+		return -1;
+	}
+	return -1;
+}
+
+char *zlog_get_mdc(char *key)
+{
+	int rc = 0;
+	char *value = NULL;
+	zlog_thread_t *a_thread;
+
+	zc_assert(key, NULL);
+
+	rc = pthread_rwlock_rdlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_rdlock fail, rc[%d]", rc);
+		return NULL;
+	}
+
+	if (!zlog_env_is_init) {
+		zc_error("never call zlog_init() or dzlog_init() before");
+		goto err;
+	}
+
+	a_thread = pthread_getspecific(zlog_thread_key);
+	if (!a_thread) {
+		zc_error("thread not found, maybe not use zlog_put_mdc before");
+		goto err;
+	}
+
+	value = zlog_mdc_get(a_thread->mdc, key);
+	if (!value) {
+		zc_error("key[%s] not found in mdc", key);
+		goto err;
+	}
+
+	rc = pthread_rwlock_unlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_unlock fail, rc=[%d]", rc);
+		return NULL;
+	}
+	return value;
+err:
+	rc = pthread_rwlock_unlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_unlock fail, rc=[%d]", rc);
+		return NULL;
+	}
+	return NULL;
+}
+
+void zlog_remove_mdc(char *key)
+{
+	int rc = 0;
+	zlog_thread_t *a_thread;
+
+	zc_assert(key, );
+
+	rc = pthread_rwlock_rdlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_rdlock fail, rc[%d]", rc);
+		return;
+	}
+
+	if (!zlog_env_is_init) {
+		zc_error("never call zlog_init() or dzlog_init() before");
+		goto exit;
+	}
+
+	a_thread = pthread_getspecific(zlog_thread_key);
+	if (!a_thread) {
+		zc_error("thread not found, maybe not use zlog_put_mdc before");
+		goto exit;
+	}
+
+	zlog_mdc_remove(a_thread->mdc, key);
+
+exit:
+	rc = pthread_rwlock_unlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_unlock fail, rc=[%d]", rc);
+		return;
+	}
+	return;
+}
+
+void zlog_clean_mdc(void)
+{
+	int rc = 0;
+	zlog_thread_t *a_thread;
+
+	rc = pthread_rwlock_rdlock(&zlog_env_lock);
+	if (rc) {;
+		zc_error("pthread_rwlock_rdlock fail, rc[%d]", rc);
+		return;
+	}
+
+	if (!zlog_env_is_init) {
+		zc_error("never call zlog_init() or dzlog_init() before");
+		goto exit;
+	}
+
+	a_thread = pthread_getspecific(zlog_thread_key);
+	if (!a_thread) {
+		zc_error("thread not found, maybe not use zlog_put_mdc before");
+		goto exit;
+	}
+
+	zlog_mdc_clean(a_thread->mdc);
+
+exit:
+	rc = pthread_rwlock_unlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_unlock fail, rc=[%d]", rc);
+		return;
+	}
+	return;
+}
+
+int zlog_level_switch(zlog_category_t * category, int level)
+{
+    // This is NOT thread safe.
+    memset(category->level_bitmap, 0x00, sizeof(category->level_bitmap));
+    category->level_bitmap[level / 8] |= ~(0xFF << (8 - level % 8));
+    memset(category->level_bitmap + level / 8 + 1, 0xFF,
+	    sizeof(category->level_bitmap) -  level / 8 - 1);
+
+    return 0;
+}
+
+/*******************************************************************************/
+void vzlog(zlog_category_t * category,
+	const char *file, size_t filelen,
+	const char *func, size_t funclen,
+	long line, int level,
+	const char *format, va_list args)
+{
+	zlog_thread_t *a_thread;
+
+	/* The bitmap determination here is not under the protection of rdlock.
+	 * It may be changed by other CPU by zlog_reload() halfway.
+	 *
+	 * Old or strange value may be read here,
+	 * but it is safe, the bitmap is valid as long as category exist,
+	 * And will be the right value after zlog_reload()
+	 *
+	 * For speed up, if one log will not be output,
+	 * There is no need to aquire rdlock.
+	 */
+	pthread_rwlock_rdlock(&zlog_env_lock);
+	
+	if (zlog_category_needless_level(category, level)) goto exit;
+
+	if (!zlog_env_is_init) {
+		zc_error("never call zlog_init() or dzlog_init() before");
+		goto exit;
+	}
+
+	zlog_fetch_thread(a_thread, exit);
+
+	zlog_event_set_fmt(a_thread->event,
+		category->name, category->name_len,
+		file, filelen, func, funclen, line, level,
+		format, args);
+
+	if (zlog_category_output(category, a_thread)) {
+		zc_error("zlog_output fail, srcfile[%s], srcline[%ld]", file, line);
+		goto exit;
+	}
+
+	if (zlog_env_conf->reload_conf_period &&
+		++zlog_env_reload_conf_count > zlog_env_conf->reload_conf_period ) {
+		/* under the protection of lock read env conf */
+		goto reload;
+	}
+
+exit:
+	pthread_rwlock_unlock(&zlog_env_lock);
+	return;
+reload:
+	pthread_rwlock_unlock(&zlog_env_lock);
+	/* will be wrlock, so after unlock */
+	if (zlog_reload((char *)-1)) {
+		zc_error("reach reload-conf-period but zlog_reload fail, zlog-chk-conf [file] see detail");
+	}
+	return;
+}
+
+void hzlog(zlog_category_t *category,
+	const char *file, size_t filelen,
+	const char *func, size_t funclen,
+	long line, int level,
+	const void *buf, size_t buflen)
+{
+	zlog_thread_t *a_thread;
+
+	pthread_rwlock_rdlock(&zlog_env_lock);
+	
+	if (zlog_category_needless_level(category, level)) goto exit;
+
+	if (!zlog_env_is_init) {
+		zc_error("never call zlog_init() or dzlog_init() before");
+		goto exit;
+	}
+
+	zlog_fetch_thread(a_thread, exit);
+
+	zlog_event_set_hex(a_thread->event,
+		category->name, category->name_len,
+		file, filelen, func, funclen, line, level,
+		buf, buflen);
+
+	if (zlog_category_output(category, a_thread)) {
+		zc_error("zlog_output fail, srcfile[%s], srcline[%ld]", file, line);
+		goto exit;
+	}
+
+	if (zlog_env_conf->reload_conf_period &&
+		++zlog_env_reload_conf_count > zlog_env_conf->reload_conf_period ) {
+		/* under the protection of lock read env conf */
+		goto reload;
+	}
+
+exit:
+	pthread_rwlock_unlock(&zlog_env_lock);
+	return;
+reload:
+	pthread_rwlock_unlock(&zlog_env_lock);
+	/* will be wrlock, so after unlock */
+	if (zlog_reload((char *)-1)) {
+		zc_error("reach reload-conf-period but zlog_reload fail, zlog-chk-conf [file] see detail");
+	}
+	return;
+}
+
+/*******************************************************************************/
+/* for speed up, copy from vzlog */
+void vdzlog(const char *file, size_t filelen,
+	const char *func, size_t funclen,
+	long line, int level,
+	const char *format, va_list args)
+{
+	zlog_thread_t *a_thread;
+
+	pthread_rwlock_rdlock(&zlog_env_lock);
+	
+	if (zlog_category_needless_level(zlog_default_category, level)) goto exit;
+
+	if (!zlog_env_is_init) {
+		zc_error("never call zlog_init() or dzlog_init() before");
+		goto exit;
+	}
+
+	/* that's the differnce, must judge default_category in lock */
+	if (!zlog_default_category) {
+		zc_error("zlog_default_category is null,"
+			"dzlog_init() or dzlog_set_cateogry() is not called above");
+		goto exit;
+	}
+
+	zlog_fetch_thread(a_thread, exit);
+
+	zlog_event_set_fmt(a_thread->event,
+		zlog_default_category->name, zlog_default_category->name_len,
+		file, filelen, func, funclen, line, level,
+		format, args);
+
+	if (zlog_category_output(zlog_default_category, a_thread)) {
+		zc_error("zlog_output fail, srcfile[%s], srcline[%ld]", file, line);
+		goto exit;
+	}
+
+	if (zlog_env_conf->reload_conf_period &&
+		++zlog_env_reload_conf_count > zlog_env_conf->reload_conf_period ) {
+		/* under the protection of lock read env conf */
+		goto reload;
+	}
+
+exit:
+	pthread_rwlock_unlock(&zlog_env_lock);
+	return;
+reload:
+	pthread_rwlock_unlock(&zlog_env_lock);
+	/* will be wrlock, so after unlock */
+	if (zlog_reload((char *)-1)) {
+		zc_error("reach reload-conf-period but zlog_reload fail, zlog-chk-conf [file] see detail");
+	}
+	return;
+}
+
+void hdzlog(const char *file, size_t filelen,
+	const char *func, size_t funclen,
+	long line, int level,
+	const void *buf, size_t buflen)
+{
+	zlog_thread_t *a_thread;
+
+	pthread_rwlock_rdlock(&zlog_env_lock);
+	
+	if (zlog_category_needless_level(zlog_default_category, level)) goto exit;
+
+	if (!zlog_env_is_init) {
+		zc_error("never call zlog_init() or dzlog_init() before");
+		goto exit;
+	}
+
+	/* that's the differnce, must judge default_category in lock */
+	if (!zlog_default_category) {
+		zc_error("zlog_default_category is null,"
+			"dzlog_init() or dzlog_set_cateogry() is not called above");
+		goto exit;
+	}
+
+	zlog_fetch_thread(a_thread, exit);
+
+	zlog_event_set_hex(a_thread->event,
+		zlog_default_category->name, zlog_default_category->name_len,
+		file, filelen, func, funclen, line, level,
+		buf, buflen);
+
+	if (zlog_category_output(zlog_default_category, a_thread)) {
+		zc_error("zlog_output fail, srcfile[%s], srcline[%ld]", file, line);
+		goto exit;
+	}
+
+	if (zlog_env_conf->reload_conf_period &&
+		++zlog_env_reload_conf_count > zlog_env_conf->reload_conf_period ) {
+		/* under the protection of lock read env conf */
+		goto reload;
+	}
+
+exit:
+	pthread_rwlock_unlock(&zlog_env_lock);
+	return;
+reload:
+	pthread_rwlock_unlock(&zlog_env_lock);
+	/* will be wrlock, so after unlock */
+	if (zlog_reload((char *)-1)) {
+		zc_error("reach reload-conf-period but zlog_reload fail, zlog-chk-conf [file] see detail");
+	}
+	return;
+}
+
+/*******************************************************************************/
+void zlog(zlog_category_t * category,
+	const char *file, size_t filelen, const char *func, size_t funclen,
+	long line, const int level,
+	const char *format, ...)
+{
+	zlog_thread_t *a_thread;
+	va_list args;
+
+	pthread_rwlock_rdlock(&zlog_env_lock);
+	
+	if (category && zlog_category_needless_level(category, level)) goto exit;
+
+	if (!zlog_env_is_init) {
+		zc_error("never call zlog_init() or dzlog_init() before");
+		goto exit;
+	}
+
+	zlog_fetch_thread(a_thread, exit);
+
+	va_start(args, format);
+	zlog_event_set_fmt(a_thread->event, category->name, category->name_len,
+		file, filelen, func, funclen, line, level,
+		format, args);
+	if (zlog_category_output(category, a_thread)) {
+		zc_error("zlog_output fail, srcfile[%s], srcline[%ld]", file, line);
+		va_end(args);
+		goto exit;
+	}
+	va_end(args);
+
+	if (zlog_env_conf->reload_conf_period &&
+		++zlog_env_reload_conf_count > zlog_env_conf->reload_conf_period ) {
+		/* under the protection of lock read env conf */
+		goto reload;
+	}
+
+exit:
+	pthread_rwlock_unlock(&zlog_env_lock);
+	return;
+reload:
+	pthread_rwlock_unlock(&zlog_env_lock);
+	/* will be wrlock, so after unlock */
+	if (zlog_reload((char *)-1)) {
+		zc_error("reach reload-conf-period but zlog_reload fail, zlog-chk-conf [file] see detail");
+	}
+	return;
+}
+
+/*******************************************************************************/
+void dzlog(const char *file, size_t filelen, const char *func, size_t funclen, long line, int level,
+	const char *format, ...)
+{
+	zlog_thread_t *a_thread;
+	va_list args;
+
+
+	pthread_rwlock_rdlock(&zlog_env_lock);
+
+	if (!zlog_env_is_init) {
+		zc_error("never call zlog_init() or dzlog_init() before");
+		goto exit;
+	}
+
+	/* that's the differnce, must judge default_category in lock */
+	if (!zlog_default_category) {
+		zc_error("zlog_default_category is null,"
+			"dzlog_init() or dzlog_set_cateogry() is not called above");
+		goto exit;
+	}
+
+	if (zlog_category_needless_level(zlog_default_category, level)) goto exit;
+
+	zlog_fetch_thread(a_thread, exit);
+
+	va_start(args, format);
+	zlog_event_set_fmt(a_thread->event,
+		zlog_default_category->name, zlog_default_category->name_len,
+		file, filelen, func, funclen, line, level,
+		format, args);
+
+	if (zlog_category_output(zlog_default_category, a_thread)) {
+		zc_error("zlog_output fail, srcfile[%s], srcline[%ld]", file, line);
+		va_end(args);
+		goto exit;
+	}
+	va_end(args);
+
+	if (zlog_env_conf->reload_conf_period &&
+		++zlog_env_reload_conf_count > zlog_env_conf->reload_conf_period ) {
+		/* under the protection of lock read env conf */
+		goto reload;
+	}
+
+exit:
+	pthread_rwlock_unlock(&zlog_env_lock);
+	return;
+reload:
+	pthread_rwlock_unlock(&zlog_env_lock);
+	/* will be wrlock, so after unlock */
+	if (zlog_reload((char *)-1)) {
+		zc_error("reach reload-conf-period but zlog_reload fail, zlog-chk-conf [file] see detail");
+	}
+	return;
+}
+
+/*******************************************************************************/
+void zlog_profile(void)
+{
+	int rc = 0;
+	rc = pthread_rwlock_rdlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_wrlock fail, rc[%d]", rc);
+		return;
+	}
+	zc_warn("------zlog_profile start------ ");
+	zc_warn("is init:[%d]", zlog_env_is_init);
+	zc_warn("init version:[%d]", zlog_env_init_version);
+	zlog_conf_profile(zlog_env_conf, ZC_WARN);
+	zlog_record_table_profile(zlog_env_records, ZC_WARN);
+	zlog_category_table_profile(zlog_env_categories, ZC_WARN);
+	if (zlog_default_category) {
+		zc_warn("-default_category-");
+		zlog_category_profile(zlog_default_category, ZC_WARN);
+	}
+	zc_warn("------zlog_profile end------ ");
+	rc = pthread_rwlock_unlock(&zlog_env_lock);
+	if (rc) {
+		zc_error("pthread_rwlock_unlock fail, rc=[%d]", rc);
+		return;
+	}
+	return;
+}
+/*******************************************************************************/
+int zlog_set_record(const char *rname, zlog_record_fn record_output)
+{
+	int rc = 0;
+	int rd = 0;
+	zlog_rule_t *a_rule;
+	zlog_record_t *a_record;
+	int i = 0;
+
+	zc_assert(rname, -1);
+	zc_assert(record_output, -1);
+
+	rd = pthread_rwlock_wrlock(&zlog_env_lock);
+	if (rd) {
+		zc_error("pthread_rwlock_rdlock fail, rd[%d]", rd);
+		return -1;
+	}
+
+	if (!zlog_env_is_init) {
+		zc_error("never call zlog_init() or dzlog_init() before");
+		goto zlog_set_record_exit;
+	}
+
+	a_record = zlog_record_new(rname, record_output);
+	if (!a_record) {
+		rc = -1;
+		zc_error("zlog_record_new fail");
+		goto zlog_set_record_exit;
+	}
+
+	rc = zc_hashtable_put(zlog_env_records, a_record->name, a_record);
+	if (rc) {
+		zlog_record_del(a_record);
+		zc_error("zc_hashtable_put fail");
+		goto zlog_set_record_exit;
+	}
+
+	zc_arraylist_foreach(zlog_env_conf->rules, i, a_rule) {
+		zlog_rule_set_record(a_rule, zlog_env_records);
+	}
+
+      zlog_set_record_exit:
+	rd = pthread_rwlock_unlock(&zlog_env_lock);
+	if (rd) {
+		zc_error("pthread_rwlock_unlock fail, rd=[%d]", rd);
+		return -1;
+	}
+	return rc;
+}
+/*******************************************************************************/
+int zlog_level_enabled(zlog_category_t *category, const int level)
+{
+	int enable = 0;
+
+	pthread_rwlock_rdlock(&zlog_env_lock);
+	enable = category && ((zlog_category_needless_level(category, level) == 0));
+	pthread_rwlock_unlock(&zlog_env_lock);
+	
+	return enable;
+}
+
+int dzlog_level_enabled(const int level)
+{
+	return zlog_level_enabled(zlog_default_category, level);
+}
+
+const char *zlog_version(void) { return ZLOG_VERSION; }

zlog/src/zlog.h

+/* Copyright (c) Hardy Simpson
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __zlog_h
+#define __zlog_h
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdarg.h> /* for va_list */
+#include <stdio.h> /* for size_t */
+
+# if defined __GNUC__
+#   define ZLOG_CHECK_PRINTF(m,n) __attribute__((format(printf,m,n)))
+# else 
+#   define ZLOG_CHECK_PRINTF(m,n)
+# endif
+
+typedef struct zlog_category_s zlog_category_t;
+
+int zlog_init(const char *config);
+int zlog_init_from_string(const char *config_string);
+int zlog_reload(const char *config);
+int zlog_reload_from_string(const char *conf_string);
+void zlog_fini(void);
+
+void zlog_profile(void);
+
+zlog_category_t *zlog_get_category(const char *cname);
+int zlog_level_enabled(zlog_category_t *category, const int level);
+
+int zlog_put_mdc(const char *key, const char *value);
+char *zlog_get_mdc(const char *key);
+void zlog_remove_mdc(const char *key);
+void zlog_clean_mdc(void);
+
+int zlog_level_switch(zlog_category_t * category, int level);
+int zlog_level_enabled(zlog_category_t * category, int level);
+
+void zlog(zlog_category_t * category,
+	const char *file, size_t filelen,
+	const char *func, size_t funclen,
+	long line, int level,
+	const char *format, ...) ZLOG_CHECK_PRINTF(8,9);
+void vzlog(zlog_category_t * category,
+	const char *file, size_t filelen,
+	const char *func, size_t funclen,
+	long line, int level,
+	const char *format, va_list args);
+void hzlog(zlog_category_t * category,
+	const char *file, size_t filelen,
+	const char *func, size_t funclen,
+	long line, int level,
+	const void *buf, size_t buflen);
+
+int dzlog_init(const char *confpath, const char *cname);
+int dzlog_set_category(const char *cname);
+int dzlog_level_enabled(const int level);
+
+void dzlog(const char *file, size_t filelen,
+	const char *func, size_t funclen,
+	long line, int level,
+	const char *format, ...) ZLOG_CHECK_PRINTF(7,8);
+void vdzlog(const char *file, size_t filelen,
+	const char *func, size_t funclen,
+	long line, int level,
+	const char *format, va_list args);
+void hdzlog(const char *file, size_t filelen,
+	const char *func, size_t funclen,
+	long line, int level,
+	const void *buf, size_t buflen);
+
+typedef struct zlog_msg_s {
+	char *buf;
+	size_t len;
+	char *path;
+} zlog_msg_t;
+
+typedef int (*zlog_record_fn)(zlog_msg_t *msg);
+int zlog_set_record(const char *rname, zlog_record_fn record);
+
+const char *zlog_version(void);
+
+/******* useful macros, can be redefined at user's h file **********/
+
+typedef enum {
+	ZLOG_LEVEL_DEBUG = 20,
+	ZLOG_LEVEL_INFO = 40,
+	ZLOG_LEVEL_NOTICE = 60,
+	ZLOG_LEVEL_WARN = 80,
+	ZLOG_LEVEL_ERROR = 100,
+	ZLOG_LEVEL_FATAL = 120
+} zlog_level; 
+
+#if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901L
+# if defined __GNUC__ && __GNUC__ >= 2
+#  define __func__ __FUNCTION__
+# else
+#  define __func__ "<unknown>"
+# endif
+#endif
+
+#if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
+/* zlog macros */
+#define zlog_fatal(cat, ...) \
+	zlog(cat, __FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_FATAL, __VA_ARGS__)
+#define zlog_error(cat, ...) \
+	zlog(cat, __FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_ERROR, __VA_ARGS__)
+#define zlog_warn(cat, ...) \
+	zlog(cat, __FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_WARN, __VA_ARGS__)
+#define zlog_notice(cat, ...) \
+	zlog(cat, __FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_NOTICE, __VA_ARGS__)
+#define zlog_info(cat, ...) \
+	zlog(cat, __FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_INFO, __VA_ARGS__)
+#define zlog_debug(cat, ...) \
+	zlog(cat, __FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_DEBUG, __VA_ARGS__)
+/* dzlog macros */
+#define dzlog_fatal(...) \
+	dzlog(__FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_FATAL, __VA_ARGS__)
+#define dzlog_error(...) \
+	dzlog(__FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_ERROR, __VA_ARGS__)
+#define dzlog_warn(...) \
+	dzlog(__FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_WARN, __VA_ARGS__)
+#define dzlog_notice(...) \
+	dzlog(__FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_NOTICE, __VA_ARGS__)
+#define dzlog_info(...) \
+	dzlog(__FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_INFO, __VA_ARGS__)
+#define dzlog_debug(...) \
+	dzlog(__FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_DEBUG, __VA_ARGS__)
+#elif defined __GNUC__
+/* zlog macros */
+#define zlog_fatal(cat, format, args...) \
+	zlog(cat, __FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_FATAL, format, ##args)
+#define zlog_error(cat, format, args...) \
+	zlog(cat, __FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_ERROR, format, ##args)
+#define zlog_warn(cat, format, args...) \
+	zlog(cat, __FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_WARN, format, ##args)
+#define zlog_notice(cat, format, args...) \
+	zlog(cat, __FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_NOTICE, format, ##args)
+#define zlog_info(cat, format, args...) \
+	zlog(cat, __FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_INFO, format, ##args)
+#define zlog_debug(cat, format, args...) \
+	zlog(cat, __FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_DEBUG, format, ##args)
+/* dzlog macros */
+#define dzlog_fatal(format, args...) \
+	dzlog(__FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_FATAL, format, ##args)
+#define dzlog_error(format, args...) \
+	dzlog(__FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_ERROR, format, ##args)
+#define dzlog_warn(format, args...) \
+	dzlog(__FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_WARN, format, ##args)
+#define dzlog_notice(format, args...) \
+	dzlog(__FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_NOTICE, format, ##args)
+#define dzlog_info(format, args...) \
+	dzlog(__FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_INFO, format, ##args)
+#define dzlog_debug(format, args...) \
+	dzlog(__FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_DEBUG, format, ##args)
+#endif
+
+/* vzlog macros */
+#define vzlog_fatal(cat, format, args) \
+	vzlog(cat, __FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_FATAL, format, args)
+#define vzlog_error(cat, format, args) \
+	vzlog(cat, __FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_ERROR, format, args)
+#define vzlog_warn(cat, format, args) \
+	vzlog(cat, __FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_WARN, format, args)
+#define vzlog_notice(cat, format, args) \
+	vzlog(cat, __FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_NOTICE, format, args)
+#define vzlog_info(cat, format, args) \
+	vzlog(cat, __FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_INFO, format, args)
+#define vzlog_debug(cat, format, args) \
+	vzlog(cat, __FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_DEBUG, format, args)
+
+/* hzlog macros */
+#define hzlog_fatal(cat, buf, buf_len) \
+	hzlog(cat, __FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_FATAL, buf, buf_len)
+#define hzlog_error(cat, buf, buf_len) \
+	hzlog(cat, __FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_ERROR, buf, buf_len)
+#define hzlog_warn(cat, buf, buf_len) \
+	hzlog(cat, __FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_WARN, buf, buf_len)
+#define hzlog_notice(cat, buf, buf_len) \
+	hzlog(cat, __FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_NOTICE, buf, buf_len)
+#define hzlog_info(cat, buf, buf_len) \
+	hzlog(cat, __FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_INFO, buf, buf_len)
+#define hzlog_debug(cat, buf, buf_len) \
+	hzlog(cat, __FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_DEBUG, buf, buf_len)
+
+
+/* vdzlog macros */
+#define vdzlog_fatal(format, args) \
+	vdzlog(__FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_FATAL, format, args)
+#define vdzlog_error(format, args) \
+	vdzlog(__FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_ERROR, format, args)
+#define vdzlog_warn(format, args) \
+	vdzlog(__FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_WARN, format, args)
+#define vdzlog_notice(format, args) \
+	vdzlog(__FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_NOTICE, format, args)
+#define vdzlog_info(format, args) \
+	vdzlog(__FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_INFO, format, args)
+#define vdzlog_debug(format, args) \
+	vdzlog(__FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_DEBUG, format, args)
+
+/* hdzlog macros */
+#define hdzlog_fatal(buf, buf_len) \
+	hdzlog(__FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_FATAL, buf, buf_len)
+#define hdzlog_error(buf, buf_len) \
+	hdzlog(__FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_ERROR, buf, buf_len)
+#define hdzlog_warn(buf, buf_len) \
+	hdzlog(__FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_WARN, buf, buf_len)
+#define hdzlog_notice(buf, buf_len) \
+	hdzlog(__FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_NOTICE, buf, buf_len)
+#define hdzlog_info(buf, buf_len) \
+	hdzlog(__FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_INFO, buf, buf_len)
+#define hdzlog_debug(buf, buf_len) \
+	hdzlog(__FILE__, sizeof(__FILE__)-1, __func__, sizeof(__func__)-1, __LINE__, \
+	ZLOG_LEVEL_DEBUG, buf, buf_len)
+
+/* enabled macros */
+#define zlog_fatal_enabled(zc) zlog_level_enabled(zc, ZLOG_LEVEL_FATAL)
+#define zlog_error_enabled(zc) zlog_level_enabled(zc, ZLOG_LEVEL_ERROR)
+#define zlog_warn_enabled(zc) zlog_level_enabled(zc, ZLOG_LEVEL_WARN)
+#define zlog_notice_enabled(zc) zlog_level_enabled(zc, ZLOG_LEVEL_NOTICE)
+#define zlog_info_enabled(zc) zlog_level_enabled(zc, ZLOG_LEVEL_INFO)
+#define zlog_debug_enabled(zc) zlog_level_enabled(zc, ZLOG_LEVEL_DEBUG)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

zlog/src/zlog_win.c

+
+#include <string.h>
+#include <windows.h>
+#include <stdio.h>
+#include <tchar.h>
+#include <stdlib.h>
+#include "zlog_win.h"
+#include <errno.h>
+#include <unistd.h>
+
+int gethostname_w(char *name, size_t len)
+{
+	int rc = gethostname(name, len);
+	DWORD newlen = len;
+
+	if (rc != 0) {
+		rc = GetComputerNameEx(ComputerNameDnsHostname, name, &newlen);
+		if (rc == 0) {
+			sprintf(name, "noname");
+		}
+	}
+	return 0;
+}
+#ifndef strcasecmp
+int strcasecmp (const char *sz1, const char *sz2)
+{
+  return stricmp (sz1, sz2);
+}
+#endif
+#ifndef localtime_r
+struct tm *localtime_r(const time_t *timep, struct tm *result)
+{
+    struct tm *ret = localtime(timep);
+    if (ret)
+    {
+        memcpy(result, ret, sizeof(struct tm));
+    }
+    return ret;
+}
+#endif
+int fsync (int fd)
+{
+    HANDLE h = (HANDLE) _get_osfhandle (fd);
+    DWORD err;
+
+    if (h == INVALID_HANDLE_VALUE)
+    {
+        errno = EBADF;
+        return -1;
+    }
+
+    if (!FlushFileBuffers (h))
+    {
+        /* Translate some Windows errors into rough approximations of Unix
+         * errors.  MSDN is useless as usual - in this case it doesn't
+         * document the full range of errors.
+         */
+        err = GetLastError ();
+        switch (err)
+        {
+        /* eg. Trying to fsync a tty. */
+        case ERROR_INVALID_HANDLE:
+            errno = EINVAL;
+            break;
+        default:
+            errno = EIO;
+        }
+        return -1;
+    }
+    return 0;
+}
+
+void setenv(const char *name, const char *value)
+{
+#ifdef HAVE_SETENV
+    setenv(name, value, 1);
+#else
+    int len = strlen(value)+1+strlen(value)+1;
+    char *str = malloc(len);
+    sprintf(str, "%s=%s", name, value);
+    putenv(str);
+#endif
+}

zlog/src/zlog_win.h

+#ifndef _ZLOG_WIN_H_
+#define _ZLOG_WIN_H_
+
+#include <time.h>
+
+#ifndef localtime_r
+struct tm *localtime_r(const time_t *timep, struct tm *result);
+#endif
+#ifndef strcasecmp
+int strcasecmp (const char *sz1, const char *sz2);
+#endif
+int fsync (int fd);
+void setenv(const char *name, const char *value);
+int gethostname_w(char *name, size_t len);
+
+/* facility codes */
+#define	LOG_KERN	(0<<3)	/* kernel messages */
+#define	LOG_USER	(1<<3)	/* random user-level messages */
+#define	LOG_MAIL	(2<<3)	/* mail system */
+#define	LOG_DAEMON	(3<<3)	/* system daemons */
+#define	LOG_AUTH	(4<<3)	/* authorization messages */
+#define	LOG_SYSLOG	(5<<3)	/* messages generated internally by syslogd */
+#define	LOG_LPR		(6<<3)	/* line printer subsystem */
+#define	LOG_NEWS	(7<<3)	/* network news subsystem */
+#define	LOG_UUCP	(8<<3)	/* UUCP subsystem */
+#define	LOG_CRON	(9<<3)	/* clock daemon */
+#define	LOG_AUTHPRIV	(10<<3)	/* authorization messages (private) */
+				/* Facility #10 clashes in DEC UNIX, where */
+				/* it's defined as LOG_MEGASAFE for AdvFS  */
+				/* event logging.                          */
+#define	LOG_FTP		(11<<3)	/* ftp daemon */
+#define	LOG_NTP		(12<<3)	/* NTP subsystem */
+#define	LOG_SECURITY	(13<<3) /* security subsystems (firewalling, etc.) */
+#define	LOG_CONSOLE	(14<<3) /* /dev/console output */
+
+	/* other codes through 15 reserved for system use */
+#define	LOG_LOCAL0	(16<<3)	/* reserved for local use */
+#define	LOG_LOCAL1	(17<<3)	/* reserved for local use */
+#define	LOG_LOCAL2	(18<<3)	/* reserved for local use */
+#define	LOG_LOCAL3	(19<<3)	/* reserved for local use */
+#define	LOG_LOCAL4	(20<<3)	/* reserved for local use */
+#define	LOG_LOCAL5	(21<<3)	/* reserved for local use */
+#define	LOG_LOCAL6	(22<<3)	/* reserved for local use */
+#define	LOG_LOCAL7	(23<<3)	/* reserved for local use */
+
+/*
+ * Option flags for openlog.
+ *
+ * LOG_ODELAY no longer does anything.
+ * LOG_NDELAY is the inverse of what it used to be.
+ */
+#define	LOG_PID		0x01	/* log the pid with each message */
+#define	LOG_CONS	0x02	/* log on the console if errors in sending */
+#define	LOG_ODELAY	0x04	/* delay open until first syslog() (default) */
+#define	LOG_NDELAY	0x08	/* don't delay open */
+#define	LOG_NOWAIT	0x10	/* don't wait for console forks: DEPRECATED */
+#define	LOG_PERROR	0x20	/* log to stderr as well */
+
+/*
+ * priorities/facilities are encoded into a single 32-bit quantity, where the
+ * bottom 3 bits are the priority (0-7) and the top 28 bits are the facility
+ * (0-big number).  Both the priorities and the facilities map roughly
+ * one-to-one to strings in the syslogd(8) source code.  This mapping is
+ * included in this file.
+ *
+ * priorities (these are ordered)
+ */
+#define	LOG_EMERG	0	/* system is unusable */
+#define	LOG_ALERT	1	/* action must be taken immediately */
+#define	LOG_CRIT	2	/* critical conditions */
+#define	LOG_ERR		3	/* error conditions */
+#define	LOG_WARNING	4	/* warning conditions */
+#define	LOG_NOTICE	5	/* normal but significant condition */
+#define	LOG_INFO	6	/* informational */
+#define	LOG_DEBUG	7	/* debug-level messages */
+
+#define	LOG_PRIMASK	0x07	/* mask to extract priority part (internal) */
+				/* extract priority */
+#define	LOG_PRI(p)	((p) & LOG_PRIMASK)
+#define	LOG_MAKEPRI(fac, pri)	((fac) | (pri))
+
+#endif
\ No newline at end of file