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96 lines
1.9 KiB
C
96 lines
1.9 KiB
C
/*************************************************************************
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> File Name: testTimeStamp.c
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> Description:
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> Conclusion:
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> Author: rh_Jameson
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> Created Time: 2015年07月14日 星期二 13时05分04秒
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************************************************************************/
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/*
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#include<stdio.h>
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#include<time.h>
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int main()
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{
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time_t rawtime;
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time ( &rawtime );
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printf("%ld\n", &rawtime);
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printf ( "The current local time is: %s", ctime (&rawtime) );
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}
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*/
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/* ctime example
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#include <stdio.h>
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#include <time.h>
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int main ()
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{
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time_t time_stp;
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time ( &time_stp );
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printf("%ld\n", time_stp);
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printf ( "The current local time is: %s", ctime (&time_stp) );
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return 0;
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}
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*/
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/* 用time()取得时间（秒数），利用localtime()
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转换成struct tm 再利用mktine（）将struct tm转换成原来的秒数*/
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#include <stdio.h>
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#include <time.h>
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/*
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int main()
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{
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time_t timep;
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struct tm *p;
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time(&timep);
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//printf("time() : %d \n",timep);
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p=localtime(&timep);
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timep = mktime(p);
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printf("time()->localtime()->mktime():%d\n",timep);
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}
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*/
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#include<stdio.h>
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#include<sys/time.h>
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#include<unistd.h>
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int main()
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{
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/*
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struct timeval tv;
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struct timezone tz;
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gettimeofday(&tv,&tz);
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printf("tv_sec:%ld\n",tv.tv_sec);
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printf("tv_usec:%ld\n",tv.tv_usec);
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printf("tz_minuteswest:%d\n",tz.tz_minuteswest);
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printf("tz_dsttime:%d\n",tz.tz_dsttime);
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*/
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struct timeval tpstart,tpend;
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long iTimeInterval;
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gettimeofday(&tpstart,NULL);
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/* to do what you want*/
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gettimeofday(&tpend,NULL);
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iTimeInterval=1000000 * (tpend.tv_sec - tpstart.tv_sec);
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iTimeInterval += tpend.tv_usec - tpstart.tv_usec;
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/*iTimeInterval 就是微妙级的时间跨度*/
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printf("tpstart:%ld\n", tpstart.tv_usec);
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printf("tpend:%ld\n", tpend.tv_usec);
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printf("iTimeInterval:%ld\n", tpend);
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}
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