Annotated edit history of
SDL_SemWait(3) version 2 showing authors affecting page license.
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perry |
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SDL_!SemWait |
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!!!SDL_!SemWait |
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NAME |
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SYNOPSIS |
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DESCRIPTION |
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RETURN VALUE |
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EXAMPLES |
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SEE ALSO |
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---- |
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!!NAME |
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SDL_!SemWait- Lock a semaphore and suspend the thread if the semaphore value is zero. |
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!!SYNOPSIS |
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__#include |
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__ |
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__int SDL_!SemWait__(__SDL_sem *sem__); |
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!!DESCRIPTION |
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__SDL_!SemWait()__ suspends the calling thread until |
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either the semaphore pointed to by __sem__ has a positive |
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value, the call is interrupted by a signal or error. If the |
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call is successful it will atomically decrement the |
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semaphore value. |
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After __SDL_!SemWait()__ is successful, the semaphore can |
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be released and its count atomically incremented by a |
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successful call to ''SDL_!SemPost''. |
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!!RETURN VALUE |
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Returns __0__ if successful or __-1__ if there was an |
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error (leaving the semaphore unchanged). |
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!!EXAMPLES |
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if (SDL_!SemWait(my_sem) == -1) { |
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return WAIT_FAILED; |
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} |
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... |
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SDL_!SemPost(my_sem); |
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!!SEE ALSO |
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__SDL_!CreateSemaphore__, __SDL_!DestroySemaphore__, |
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__SDL_!SemTryWait__, __SDL_!SemWaitTimeout__, |
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__SDL_!SemPost__, __SDL_!SemValue__ |
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---- |
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