获取当前时间,精确到毫秒

#include <sys/time.h>
#include <time.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <iostream>
using namespace std;

typedef int BOOL;
#define TRUE	1
#define FALSE	0

BOOL GetCurrTime(char* lpszTime, char* lpszDate)
{
	time_t	rt		= {0};
	tm*		ptmInfo	= NULL;

	try
	{
		time(&rt);
		ptmInfo = localtime(&rt);

		if (lpszTime)
		{
			//加上毫秒
			struct timeval tv;
			gettimeofday(&tv, NULL);
			tv.tv_usec /= 1000;

			sprintf(lpszTime, "%d-%d-%d %d:%d:%d.%03d", ptmInfo->tm_year + 1900, ptmInfo->tm_mon + 1, ptmInfo->tm_mday,
				ptmInfo->tm_hour, ptmInfo->tm_min, ptmInfo->tm_sec, (int)tv.tv_usec);		

		}

		if (lpszDate)
		{
			sprintf(lpszDate, "%d-%d-%d", ptmInfo->tm_year + 1900, ptmInfo->tm_mon + 1, ptmInfo->tm_mday);
		}
	}
	catch (...)
	{
		return FALSE;
	}

	return TRUE;
}

char* GetCurrTime(char* szTime)
{
        struct timeval tv;
        struct tm      tmInfo;
        size_t         len = 28;

        gettimeofday(&tv, NULL);
        localtime_r(&tv.tv_sec, &tmInfo);
        strftime(szTime, len, "%Y-%m-%d %H:%M:%S", &tmInfo);

        len = strlen(szTime);
		tv.tv_usec /= 1000;
        sprintf(szTime + len, ".%03d", (int)(tv.tv_usec));

        return szTime;
}

int main()
{
	char szTime[100] = {0};
	GetCurrTime(szTime, NULL);

	cout << "curr time:" << szTime << endl;

	return 0;
}