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Updated: Thursday, June 13, 2019
 
 

SDL_SemPost (3)

Name

SDL_SemPost - Unlock a semaphore.

Synopsis

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

int SDL_SemPost(SDL_sem *sem);

Description

SDL_SemPost(3)                 SDL API Reference                SDL_SemPost(3)



NAME
       SDL_SemPost - Unlock a semaphore.

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

       int SDL_SemPost(SDL_sem *sem);

DESCRIPTION
       SDL_SemPost  unlocks  the  semaphore  pointed  to by sem and atomically
       increments the semaphores value. Threads that were blocking on the sem-
       aphore may be scheduled after this call succeeds.

       SDL_SemPost  should be called after a semaphore is locked by a success-
       ful call to SDL_SemWait, SDL_SemTryWait or SDL_SemWaitTimeout.

RETURN VALUE
       Returns 0 if successful or -1 if there was an error (leaving the  sema-
       phore unchanged).

EXAMPLES
       SDL_SemPost(my_sem);

ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       +---------------+------------------+
       |ATTRIBUTE TYPE | ATTRIBUTE VALUE  |
       +---------------+------------------+
       |Availability   | library/sdl      |
       +---------------+------------------+
       |Stability      | Volatile         |
       +---------------+------------------+
SEE ALSO
       SDL_CreateSemaphore, SDL_DestroySemaphore, SDL_SemWait, SDL_SemTryWait,
       SDL_SemWaitTimeout, SDL_SemValue



NOTES
       This    software    was    built    from    source     available     at
       https://github.com/oracle/solaris-userland.    The  original  community
       source       was        downloaded        from         https://www.lib-
       sdl.org/release/SDL-1.2.15.tar.gz

       Further information about this software can be found on the open source
       community website at https://www.libsdl.org/.



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