gettimeofday(struct timeval *tv, struct timezone *tz)函数 功能:获取当前精确时间(Unix时间) 其中: timeval为时间 truct timeval{ long tv_sec; // 秒数 long tv_usec; // 微秒数 } timezone为时区 #include<stdio.h> #include<sys/time.h> int main(){ struct timeval tv; gettimeofday(&tv,NULL);...
gettimeofday(struct timeval *tv, struct timezone *tz)函数 功能:获取当前精确时间(Unix时间) 其中: timeval为时间 truct timeval{ long tv_sec; // 秒数 long tv_usec; // 微秒数 } timezone为时区 #include<stdio.h> #include<sys/time.h> int main(){ struct timeval tv; gettimeofday(&tv,NULL);...
tz_dsttime表示是否使用夏令时进行调整,其取值有三种情况:0表示不使用夏令时调整,1表示使用夏令时调整,-1表示无夏令时信息。 通过结构体timezone,Linux系统可以更加方便地处理不同时区的时间信息。通过设置不同的tz_minuteswest和tz_dsttime值,可以方便地处理世界各地不同时区的时间计算。这在跨时区的软件开发和系统...
int tz_dsttime; //type of DST correction }; struct timeval有两个成员,一个是秒,一个是微秒, 所以最高精确度是微秒。 一般由函数int gettimeofday(struct timeval *tv, struct timezone *tz)获取系统的时间 1#include<stdio.h>2#include<time.h>3#include<sys/time.h>45voidnowtime_ns()6{7printf(...
int gettimeofday(struct timeval *tv, struct timezone *tz); The functions gettimeofday() and settimeofday() can get and set the time as well as a timezone. The use of the timezone structure is obsolete;the tz argument should normally be specified as NULL. ...
struct timeval { time_t tv_sec; // seconds long tv_usec; // microseconds }; struct timezone{ int tz_minuteswest; //miniutes west of Greenwich int tz_dsttime; //type of DST correction }; struct timeval有两个成员,一个是秒,一个是微秒, 所以最高精确度是微秒。一般由如下函数获取系统时间...
time_ttv_sec; suseconds_t tv_usec; }; millisecond毫秒 microsecond微秒 timeval表示一个时间点,比如: timeval.tv_sec = 1(s) timevat.tv_usec = 500 000 (μs) 1:500 = 1s500000μs= 1.5s (2) gettimeofday() int gettimeofday(struct timeval *tv, struct timezone *tz); ...
int settimeofday(const struct timeval *tv, const struct timezone *tz) { struct timespec ts; if (tz) { #ifdef __NR_settimeofday if (!tv) return syscall(__NR_settimeofday, NULL, tz); #endif errno = ENOSYS; return -1; } return clock_gettime(CLOCK_REALTIME, timeval_to_timespec(&ts,...
int gettimeofday(struct timeval *tv, struct timezone *tz);int main(int argc,char * argv[]){ struct timeval tv;while(1){ gettimeofday(&tv,NULL);printf("time %u:%u\n",tv.tv_sec,tv.tv_usec);sleep(2);} return 0;} 运行结果如下：time 1259471701:970193 time 1259471703:971529 time ...
Contains a stream that maps to the persisted format of a TZREG structure, which describes the time zone to be used for the start and end time of a recurring appointment or meeting request.Proširi tabelu PropertyValue Associated properties: dispidTimeZoneStruct Property set: PSETID_...