What's the algorithm behind sleep()?

Question

Now there\'s something I always wondered: how is sleep() implemented ?

If it is all about using an API from the OS, then how is the API made ?

Does it all bo

Answer 1

A multitasking operating system has a component called a scheduler, this component is responsible for giving CPU time to threads, calling sleep tells the OS not to give CPU time to this thread for some time.

see http://en.wikipedia.org/wiki/Process_states for complete details.