常用日志模块

1、常用日志模块代码： syslog() , vsyslog()

#include <syslog.h>#include <stdarg.h>static void log( const char* func, int line, int priority, char* format, ... ){    char new_format[255];    snprintf( new_format, sizeof(new_format), "%s:%d: %s: %s", __FILE__, line, func, format );    va_list args;    va_start( args, format );    vsyslog( priority, new_format, args );    va_end( args );}#define LOGNAME        __FILE__ ": " #define NOTICE(...)   syslog( LOG_NOTICE, LOGNAME __VA_ARGS__ )#define DEBUG(...)   log( __func__, __LINE__, LOG_DEBUG, __VA_ARGS__ )void test_log(){    openlog("MyMsgMARK", LOG_CONS | LOG_PID, 0);//  syslog(LOG_DEBUG,__func__,"TTTTT");     NOTICE("TTTTTTTTTTTTTTTTTT");    DEBUG("AAAAAAA");    closelog();    return 0;}