Get a timestamp in C in microseconds?

Question

How do I get a microseconds timestamp in C?

I\'m trying to do:

struct timeval tv;
gettimeofday(&tv,NULL);
return tv.tv_usec;

Bu

Answer 1

You have two choices for getting a microsecond timestamp. The first (and best) choice, is to use the timeval type directly:

struct timeval GetTimeStamp() {
    struct timeval tv;
    gettimeofday(&tv,NULL);
    return tv;
}

The second, and for me less desirable, choice is to build a uint64_t out of a timeval:

uint64_t GetTimeStamp() {
    struct timeval tv;
    gettimeofday(&tv,NULL);
    return tv.tv_sec*(uint64_t)1000000+tv.tv_usec;
}