linux c下log输出代码模板示例代码

/** log.c **/#include <unistd.h>#include "log.h"// log文件路径#define filepath "./ps_com_log.log" //设定时间static char * settime(char * time_s){ time_t timer=time(NULL); strftime(time_s, 20, "%Y-%m-%d %H:%M:%S",localtime(&timer)); return time_s;} /* *打印 * */static int PrintfLog(char * logText, char * string){ FILE * fd = NULL; char s[1024]; char tmp[256]; //使用追加方式打开文件 fd = fopen(filepath,"a+"); if(fd == NULL){  return -1; }  memset(s, 0, sizeof(s)); memset(tmp, 0,sizeof(tmp));  sprintf(tmp, "*****[pid=%d]:[", getpid()); strcpy(s, tmp);  memset(tmp, 0,sizeof(tmp)); settime(tmp); strcat(s, tmp); strcat(s, "]*****"); fprintf(fd, "%s", s); fprintf(fd, "*[%s]*****:/n",logText);  fprintf(fd, "%s/n",string);  fclose(fd);}  /* *日志写入 * */void LogWrite(char *logText,char *string){ //[为支持多线程需要加锁] pthread_mutex_lock(&mutex_log); //lock.  //打印日志信息 PrintfLog(logText, string);                   //[为支持多线程需要加锁] pthread_mutex_unlock(&mutex_log); //unlock.            }

#ifndef __LOG_H__#define __LOG_H__#include <stdio.h>#include <string.h>#include <time.h> void LogWrite(char * logText,char *string);#endif /* __LOG_H__ */

#include "stdio.h"#include "log.h"int main(int argv,char**argc){ printf("test/n"); LogWrite("INFO","Hello World!"); LogWrite("error","H.e.l.l.o W.o.r.l.d!"); LogWrite("mint","H e l l o W o r l d!"); LogWrite("iout","Hallo World!"); return 0;}