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  • 平台移植的各种情况

      这两天在做平台移植,程序从windows平台移植到linux下运行,着实麻烦哦~

    时间获取部分:localtime_s和localtime_r的参数是相反的,囧。。。。

    #ifndef linux
    
    			localtime_s(&tm_now,&tNow);
    
    #else
    
    			localtime_r(&tNow,&tm_now);
    
    #endif
    

      

    对于systemtime 和tm 以及time_t 的转换

    //	功能:	linux版的GetLocalTime获取本地时间
    void GetLocalTime(SYSTEMTIME* lpSystemTime)
    {
    	struct timeval tv;
    	gettimeofday (&tv , NULL);
    
    	tm tm_now ;
    	localtime_r(&tv.tv_sec,&tm_now);
    
    	lpSystemTime->wYear = tm_now.tm_year+1900;			//年份
    	lpSystemTime->wMonth = tm_now.tm_mon+1;				//月 tm[0-11] sys[1-12]
    	lpSystemTime->wDay = tm_now.tm_mday;						//日
    	lpSystemTime->wDayOfWeek = (tm_now.tm_wday+1)%7 ;		// tm一星期的日数,从星期一算起,范围为0-6 sys从星期日算起
    	lpSystemTime->wHour =tm_now.tm_hour;					//小时
    	lpSystemTime->wMinute = tm_now.tm_min;				//分钟
    	lpSystemTime->wSecond = tm_now.tm_sec;				//秒
    	lpSystemTime->wMilliseconds = tv.tv_usec/1000;			//毫秒
    }
    //将system转换成time_t 
    void SystemTime2Time_T(LPSYSTEMTIME pSysTime,time_t* pTime)
    {
    	tm tm_tmp = {pSysTime->wSecond, 
    pSysTime->wMinute, 
    pSysTime->wHour,
     pSysTime->wDay,
     pSysTime->wMonth-1,
     pSysTime->wYear-1900,
     pSysTime->wDayOfWeek, 0, 0};
    	*pTime = mktime(&tm_tmp);
    }
    

      

    测试代码:

     1 int main (int argc, char* argv[]) {
    2
    3 SYSTEMTIME systime;
    4 time_t t_tmp=time(NULL);
    5 printf("org %I64d \r\n",t_tmp);
    6 GetLocalTime(&systime);
    7
    8 printf("after get time %04d-%02d-%02d %02d:%02d:%02d.%d\r\n",systime.wYear,systime.wMonth,
    9 systime.wDay,systime.wHour,
    10 systime.wMinute,systime.wSecond,systime.wMilliseconds);
    11 time_t t_now;
    12 SystemTime2Time_T(&systime,&t_now);
    13 printf("convent %I64d\r\n",t_now);
    14 getchar();
    15 }
    /* 运行结果
    org                                                       1318434216 
    after get time 2011-10-12 23:43:36.532
    convent                                                       1318434216
    */
    

      



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  • 原文地址:https://www.cnblogs.com/Zscorpio/p/2209565.html
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