SDL_SemWaitTimeout man page on JazzOS

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SDL_SemWaitTimeout(3)	       SDL API Reference	 SDL_SemWaitTimeout(3)

       SDL_SemWaitTimeout  - Lock a semaphore, but only wait up to a specified
       maximum time.

       #include "SDL.h" #include "SDL_thread.h"

       int SDL_SemWaitTimeout(SDL_sem *sem, Uint32 timeout);

       SDL_SemWaitTimeout() is a varient of SDL_SemWait with a maximum timeout
       value.  If  the	value  of  the semaphore pointed to by sem is positive
       (greater than zero) it will atomically decrement	 the  semaphore	 value
       and  return 0, otherwise it will wait up to timeout milliseconds trying
       to lock the semaphore. This function is to be avoided if possible since
       on some platforms it is implemented by polling the semaphore every mil‐
       lisecond in a busy loop.

       After SDL_SemWaitTimeout() is successful, the semaphore can be released
       and  its	 count atomically incremented by a successful call to SDL_Sem‐

       Returns	0  if  the  semaphore  was  successfully  locked   or	either
       SDL_MUTEX_TIMEOUT or -1 if the timeout period was exceeded or there was
       an error, respectivly.

       If the semaphore was not successfully locked,  the  semaphore  will  be

       res = SDL_SemWaitTimeout(my_sem, WAIT_TIMEOUT_MILLISEC);

       if (res == SDL_MUTEX_TIMEOUT) {
	       return TRY_AGAIN;
       if (res == -1) {
	       return WAIT_ERROR;



       SDL_CreateSemaphore, SDL_DestroySemaphore, SDL_SemWait, SDL_SemTryWait,
       SDL_SemPost, SDL_SemValue

SDL			    Tue 11 Sep 2001, 23:00	 SDL_SemWaitTimeout(3)

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