###### (This is the legacy documentation for SDL2, the previous stable version; [SDL3](https://wiki.libsdl.org/SDL3/) is the current stable version.) # SDL_DestroySemaphore Destroy a semaphore. ## Header File Defined in [SDL_mutex.h](https://github.com/libsdl-org/SDL/blob/SDL2/include/SDL_mutex.h) ## Syntax ```c void SDL_DestroySemaphore(SDL_sem * sem); ``` ## Function Parameters | | | | | -------------------- | ------- | ------------------------- | | [SDL_sem](SDL_sem) * | **sem** | the semaphore to destroy. | ## Remarks It is not safe to destroy a semaphore if there are threads currently waiting on it. ## Version This function is available since SDL 2.0.0. ## See Also - [SDL_CreateSemaphore](SDL_CreateSemaphore) - [SDL_SemPost](SDL_SemPost) - [SDL_SemTryWait](SDL_SemTryWait) - [SDL_SemValue](SDL_SemValue) - [SDL_SemWait](SDL_SemWait) - [SDL_SemWaitTimeout](SDL_SemWaitTimeout) ---- [CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction), [CategoryMutex](CategoryMutex)