(This is the legacy documentation for stable SDL2, the current stable version; SDL3 is the current development 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

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 2.0.0.

See Also

CategoryAPI, CategoryAPIFunction, CategoryMutex