总结几种log打印printf函数的宏定义

http://blog.chinaunix.net/u1/38994/showart_1168773.html

 #include <stdio.h>

 #define lU_DEBUG_PREFIX "##########"

 #define LU_DEBUG_CMD 0x01
 #define LU_DEBUG_DATA 0x02
 #define LU_DEBUG_ERROR 0x04

 #define LU_PRINTF_cmd(msg...) do{if(lu_debugs & LU_DEBUG_CMD)printf(lU_DEBUG_PREFIX msg);}while(0)
 #define LU_PRINTF_data(msg...) do{if(lu_debugs & LU_DEBUG_DATA)printf(lU_DEBUG_PREFIX msg);}while(0)
 #define LU_PRINTF_error(msg...) do{if(lu_debugs & LU_DEBUG_ERROR)printf(lU_DEBUG_PREFIX msg);}while(0)


 #define lu_printf(level, msg...) LU_PRINTF_##level(msg)
 #define lu_printf2(...) printf(__VA_ARGS__)
 #define lu_printf3(...) lu_printf(__VA_ARGS__)
 static int lu_printf4_format(int prio, const char *fmt, ...);
 #define lu_printf4(prio, fmt...) lu_printf4_format(prio, fmt)


 int lu_debugs;

 int main(int argc, char *argv[])
 {
     lu_debugs |= LU_DEBUG_CMD | LU_DEBUG_DATA | LU_DEBUG_ERROR;
     printf("lu_debugs = %p\n", lu_debugs);
     lu_printf(cmd,"this is cmd\n");
     lu_printf(data,"this is data\n");
     lu_printf(error,"this is error\n");
     lu_debugs &= ~(LU_DEBUG_CMD | LU_DEBUG_DATA);
     printf("lu_debugs = %p\n", lu_debugs);
     lu_printf(cmd,"this is cmd\n");
     lu_printf(data,"this is data\n");
     lu_printf(error,"this is error\n");
     lu_printf2("aa%d,%s,%dbbbbb\n", 20, "eeeeeee", 100);
     lu_debugs |= LU_DEBUG_CMD | LU_DEBUG_DATA | LU_DEBUG_ERROR;
     printf("lu_debugs = %p\n", lu_debugs);
     lu_printf3(cmd,"this is cmd \n");
     lu_printf3(data,"this is data\n");
     lu_printf3(error,"this is error\n");
     lu_printf4(0,"luther %s ,%d ,%d\n", "gliethttp", 1, 2);
     return 0;
 }

 #include <stdarg.h>
 static int lu_printf4_format(int prio, const char *fmt, ...)
 {
 #define LOG_BUF_SIZE (4096)
     va_list ap;
     char buf[LOG_BUF_SIZE];

     va_start(ap, fmt);
     vsnprintf(buf, LOG_BUF_SIZE, fmt, ap);
     va_end(ap);

     printf("<%d>: %s", prio, buf);
     printf("------------------------\n");
     printf(buf);
 }

 #define ENTER() LOGD("enter into %s", __FUNCTION__)


 #define LOGD(...) ((void)LOG(LOG_DEBUG, LOG_TAG, __VA_ARGS__))

 #define LOG(priority, tag, ...) \
     LOG_PRI(ANDROID_##priority, tag, __VA_ARGS__)

 #define LOG_PRI(priority, tag, ...) \
     android_printLog(priority, tag, __VA_ARGS__)


 #define android_printLog(prio, tag, fmt...) \
     __android_log_print(prio, tag, fmt)

 

http://www.linuxsir.org/bbs/showthread.php?t=302451

 

这里有篇不错的文章，[经验分享]程序日志中自动记录所在函数名、文件名、行号

比上面的要好多了：

 #include <stdio.h>

 #define LOG_DEBUG "DEBUG"
 #define LOG_TRACE "TRACE"
 #define LOG_ERROR "ERROR"
 #define LOG_INFO  "INFOR"
 #define LOG_CRIT  "CRTCL"

 #define LOG(level, format, ...) \
     do { \
         fprintf(stderr, "[%s|%s@%s,%d] " format "\n", \
             level, __func__, __FILE__, __LINE__, ##__VA_ARGS__ ); \
     } while (0)

 int main()
 {
     LOG(LOG_DEBUG, "a=%d", 10);
     return 0;
 }

或者

 #define DBG(format, args...) fprintf(stderr,