Code-C++-Linux-获取时间time()/localtime()/gettimeofday()
#include <iostream>
//#include <time.h>
#include <sys/time.h> //for gettimeofday()
#include <string>
void getCurrentTime(){
time_t llTime;
time(&llTime);
std::cout << asctime(gmtime(&llTime))<<std::endl;
}
static std::string getCurrentLocalTime(void){
time_t llSeconds; //以秒为单位的时间值
tm *struTime; //本地时间结构体
char cBuf[128] = {0};
llSeconds = time(NULL);//获取目前以秒为单位的时间值
struTime = localtime(&llSeconds);//转为本地时间，注意：localtime非线程安全--->localtime_r 线程安全
strftime(cBuf, 64, "%Y-%m-%d %H:%M:%S", struTime);
return cBuf;
}
static std::string getCurrentLocalTimeWithMs(void){
std::string strDefaultTime = "19700101000000000";
struct timeval struCurrentTime;
gettimeofday(&struCurrentTime, NULL); //#include <sys/time.h>
int nMillisec = struCurrentTime.tv_usec/1000;
char cBuf[80] = {0};
struct tm struNowTime;
localtime_r(&struCurrentTime.tv_sec, &struNowTime);
strftime(cBuf, sizeof(cBuf), "%Y-%m-%d %H:%M:%S", &struNowTime);
char cCurTime[84] = {0};
snprintf(cCurTime, sizeof(cCurTime), "%s.%03d", cBuf, nMillisec);
return cCurTime;
}