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);...
int gettimeofday(struct timeval* tv,struct timezone* tz); 该函数会提取系统当前时间,并把时间分为秒和微秒两部分填充到结构struct timeval中;同时把当地的时区信 息填充到结构struct timezone中; 返回值:成功则返回0,失败返回-1,错误代码存于errno。附加说明EFAULT指针tv和tz所指的内存空间超出存 取权限。 stru...
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);...
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 The use of the timezone structure is obsolete;the tz argument should normally be specified as NULL.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...
timevat.tv_usec = 500 000 (μs) 1:500 = 1s500000μs= 1.5s (2) gettimeofday() int gettimeofday(struct timeval *tv, struct timezone *tz); gettimeofday()会把目前的时间有tv所指的结构返回,当地时区的信息则放到tz所指的结构中。 timezone 结构定义为: ...
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 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 三、对照样例：1 #include<stdio.h> 2 #include<time.h> 3 #include<sys/time.h> 4 ...
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_...