timespec_get

Other macro constants beginning with TIME_ may be provided by the implementation to indicate additional time bases

If base is TIME_UTC , then

• ts - > tv_sec is set to the number of seconds since an implementation defined epoch, truncated to a whole value
• ts - > tv_nsec member is set to the integral number of nanoseconds, rounded to the resolution of the system clock

Parameters

Return value

The value of base if successful, zero otherwise.

Notes

The POSIX function clock_gettime(CLOCK_REALTIME, ts) may also be used to populate a timespec with the time since the Epoch.

Example

#include <stdio.h>
#include <time.h>
 
int main(void)
{
    struct timespec ts;
    timespec_get(&ts, TIME_UTC);
    char buff[100];
    strftime(buff, sizeof buff, "%D %T", gmtime(&ts.tv_sec));
    printf("Current time: %s.%09ld UTC\n", buff, ts.tv_nsec);
}

Current time: 02/18/15 14:34:03.048508855 UTC

References

See also