一个不错输出日志文件代码_程序开发

一个不错输出日志文件代码

admin

2023-08-02 06:26:28

0次

#include #include #include #ifdef WIN32 #include #include #else #include #include time.h> #include #define CRITICAL_SECTION pthread_mutex_t #define _vsnprintf vsnprintf#endif//Log{#define MAXLOGSIZE 20000000#define MAXLINSIZE 16000#include #include #include char logfilename1[]="MyLog1.log";char logfilename2[]="MyLog2.log";static char logstr[MAXLINSIZE+1];char datestr[16];char timestr[16];char mss[4];CRITICAL_SECTION cs_log;FILE *flog;#ifdef WIN32void Lock(CRITICAL_SECTION *l) { EnterCriticalSection(l);}void Unlock(CRITICAL_SECTION *l) { LeaveCriticalSection(l);}#elsevoid Lock(CRITICAL_SECTION *l) { pthread_mutex_lock(l);}void Unlock(CRITICAL_SECTION *l) { pthread_mutex_unlock(l);}#endifvoid LogV(const char *pszFmt,va_list argp) { struct tm *now; struct timeb tb; if (NULL==pszFmt||0==pszFmt[0]) return; _vsnprintf(logstr,MAXLINSIZE,pszFmt,argp); ftime(&tb); now=localtime(&tb.time); sprintf(datestr,"%04d-%02d-%02d",now->tm_year+1900,now->tm_mon+1,now->tm_mday); sprintf(timestr,"%02d:%02d:%02d",now->tm_hour ,now->tm_min ,now->tm_sec ); sprintf(mss,"%03d",tb.millitm); printf("%s %s.%s %s",datestr,timestr,mss,logstr); flog=fopen(logfilename1,"a"); if (NULL!=flog) { fprintf(flog,"%s %s.%s %s",datestr,timestr,mss,logstr); if (ftell(flog)>MAXLOGSIZE) { fclose(flog); if (rename(logfilename1,logfilename2)) { remove(logfilename2); rename(logfilename1,logfilename2); } } else { fclose(flog); } }}void Log(const char *pszFmt,...) { va_list argp; Lock(&cs_log); va_start(argp,pszFmt); LogV(pszFmt,argp); va_end(argp); Unlock(&cs_log);}//Log}int main(int argc,char * argv[]) { int i;#ifdef WIN32 InitializeCriticalSection(&cs_log);#else pthread_mutex_init(&cs_log,NULL);#endif for (i=0;i<10000;i++) { Log("This is a Log %04d from FILE:%s LINE:%d\n",i, __FILE__, __LINE__); }#ifdef WIN32 DeleteCriticalSection(&cs_log);#else pthread_mutex_destroy(&cs_log);#endif return 0;}//1-78行添加到你带main的.c或.cpp的那个文件的最前面//81-85行添加到你的main函数开头//89-93行添加到你的main函数结束前//在要写LOG的地方仿照第87行的写法写LOG到文件MyLog1.log中

上一篇：QT不同平台对线程如何支持和实现

下一篇：分享微信小程序雀神脚本，青橙竞技辅助挂透视插件；揭秘内幕作弊提高胜率

一个不错输出日志文件代码

相关内容

热门资讯