Loops/timers in C

Question

How does one create a timer in C?

I want a piece of code to continuously fetch data from a gps parsers output.

Are there good libraries for this or should it be self written?

Answer 1

The question about a timer is quite unspecific, though there are two functions that come to my mind that will help you:

• sleep() This function will cause execution to stop for a specified number of seconds. You can also use usleep and nanosleep if you want to specify the sleeptime more exactly
• gettimeofday() Using this function you are able to stop between to timesteps.

See manpages for further explanation :)