What makes a call to sem_post not return?

See more:

embedded

C

Windows

Linux

Hi All,

I'm using MontaVista Linux 3 I believe. I am experiencing a hang when calling a sem_post() on a semaphore. I read that sem_post would need to lock the semaphore and then increment the value and call the scheduler.

What are some reasons for sem_post to not return?

Thank you,
John