(This is the documentation for SDL3, which is under heavy development and the API is changing! SDL2 is the current stable version!)

SDL_SemPost

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

Syntax

int SDL_SemPost(SDL_sem *sem);

Function Parameters

sem	the semaphore to increment

Return Value

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

Version

This function is available since SDL 3.0.0.

Code Examples

<<Include(SDL_CreateSemaphore, , , from="## Begin Semaphore Example", to="## End Semaphore Example")>>

Related Functions

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

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CategoryAPI, CategoryMutex

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