trace.c

证券交易系统

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <time.h>
#include <sys/time.h>

int WriteLog(char * pcFileName ,char *pcFmtStr,...)
{
   va_list valist;
   struct timeval tv;
   time_t clock;
   struct tm *tm1;
   char datestr[20];
   char timestr[20];
   FILE *fp;
   char _acTraceFileName[1024+1];

   gettimeofday(&tv,0);
   clock = tv.tv_sec;
   tm1 = localtime( &clock );

   memset(datestr,0,sizeof(datestr));
   memset(timestr,0,sizeof(timestr));
   strftime(datestr,9,"%Y%m%d",tm1);
   strftime(timestr,9,"%H:%M:%S",tm1);

   memset(_acTraceFileName,0,sizeof(_acTraceFileName));
   sprintf(_acTraceFileName,"%s/log/%s%s",getenv("WORKDIR"),pcFileName,datestr);

   fp = fopen(_acTraceFileName, "a+");
   if (fp == NULL)
   {
      printf("Open or create trace files failed!\n");
      return -1;
   }
   va_start(valist,pcFmtStr);
   fprintf(fp,"%s:[%d]",timestr,getpid());
   fflush(fp);
   vfprintf(fp,pcFmtStr,valist);
   fprintf(fp,"\n");
   fclose(fp);

   va_end(valist);
   return 0;
}