(This is the legacy documentation for SDL2, the previous stable version; SDL3 is the current stable version.)

SDL_SemPost

Atomically increment a semaphore's value and wake waiting threads.

Header File

Defined in SDL_mutex.h

Syntax

int SDL_SemPost(SDL_sem * sem);

Function Parameters

SDL_sem *

sem

the semaphore to increment.

Return Value

(int) Returns 0 on success or a negative error code on failure; call SDL_GetError() for more information.

Version

This function is available since SDL 2.0.0.

See Also

• SDL_CreateSemaphore
• SDL_DestroySemaphore
• SDL_SemTryWait
• SDL_SemValue
• SDL_SemWait
• SDL_SemWaitTimeout

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CategoryAPI, CategoryAPIFunction, CategoryMutex

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