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SDL Wiki

SDL_CreateMutex

Create a new mutex.

Syntax

SDL_mutex* SDL_CreateMutex(void);

Return Value

Returns the initialized and unlocked mutex or NULL on failure; call SDL_GetError() for more information.

Remarks

All newly-created mutexes begin in the _unlocked_ state.

Calls to SDL_LockMutex() will not return while the mutex is locked by another thread. See SDL_TryLockMutex() to attempt to lock without blocking.

SDL mutexes are reentrant.

Code Examples

SDL_mutex *mutex;

mutex = SDL_CreateMutex();
if (!mutex) {
  fprintf(stderr, "Couldn't create mutex\n");
  return;
}

if (SDL_LockMutex(mutex) == 0) {
  /* Do stuff while mutex is locked */
  SDL_UnlockMutex(mutex);
} else {
  fprintf(stderr, "Couldn't lock mutex\n");
}

SDL_DestroyMutex(mutex);
SDL_DestroyMutex
SDL_LockMutex
SDL_TryLockMutex
SDL_UnlockMutex

CategoryAPI, CategoryMutex


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