python - Equivalent to GetTickCount() on Linux

Question

I'm looking for an equivalent to GetTickCount() on Linux.

Presently I am using Python's time.time() which presumably calls through to gettimeofday(). My concern is that the time returned (the unix epoch), may change erratically if the clock is messed with, such as by NTP. A simple process or system wall time, that only increases positively at a constant rate would suffice.

Does any such time function in C or Python exist?

Answer 1

You can use CLOCK_MONOTONIC e.g. in C:

struct timespec ts;
if(clock_gettime(CLOCK_MONOTONIC,&ts) != 0) {
 //error
}

See this question for a Python way - How do I get monotonic time durations in python?