hi, i am porting my game engine project from windows to linux, and I did not manage to find a good way to replace my QueryPerformanceCounter timer with something similar. does linux has support for high performance timer ? (i think it must but i did not find any docs on it) and what functions to use ? thanks for your help

I believe gettimeofday is the standard high resolution timer, despite its name.

This is actually in the FAQ :).