struct Timeval and struct TIMESPEC

struct Timeval {      time_t tv_sec;      suseconds_t tv_usec;};

The test code is as follows:

#include <stdio.h> #include <sys/time.h> #include <time.h> int gettimeofday (struct timeval *tv, Struc　　T 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; }

The results of the operation are as follows:
Time 1,259,471,701:970,193
Time 1,259,471,703:971,529
Time 1,259,471,705:973,225
Time 1,259,471,707:974,921
Timespec

struct timespec{    time_t tv_sec;           long int tv_nsec;      };

Unlike struct Timeval, members of the structure are transformed into nanoseconds in microseconds

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struct Timeval and struct TIMESPEC