Create a condition variable.
Defined in <SDL3/SDL_mutex.h>
void); SDL_Condition* SDL_CreateCondition(
Returns a new condition variable or NULL on failure; call SDL_GetError() for more information.
This function is available since SDL 3.0.0.
Typical use of condition variables:
// BEWARE: This code example was migrated from the SDL2 Wiki, by only updating the names.
SDL_bool condition = SDL_FALSE;
SDL_Mutex *lock;
SDL_Condition *cond;
lock = SDL_CreateMutex();
cond = SDL_CreateCondition();
Thread_A:
SDL_LockMutex(lock);while (!condition) {
SDL_WaitCondition(cond, lock);
}
SDL_UnlockMutex(lock);
Thread_B:
SDL_LockMutex(lock);/* ... */
condition = SDL_TRUE;/* ... */
SDL_SignalCondition(cond);
SDL_UnlockMutex(lock);
SDL_DestroyCondition(cond); SDL_DestroyMutex(lock);
CategoryAPI, CategoryAPIFunction