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


Try to lock a mutex without blocking.


int SDL_TryLockMutex(SDL_mutex * mutex) SDL_TRY_ACQUIRE(0, mutex);

Function Parameters

mutex the mutex to try to lock

Return Value

Returns 0, SDL_MUTEX_TIMEDOUT, or -1 on error; call SDL_GetError() for more information.


This works just like SDL_LockMutex(), but if the mutex is not available, this function returns SDL_MUTEX_TIMEOUT immediately.

This technique is useful if you need exclusive access to a resource but don't want to wait for it, and will return to it to try again later.


This function is available since SDL 2.0.0.


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