Wait until a condition variable is signaled.
int SDL_CondWait(SDL_cond * cond, SDL_mutex * mutex);
|cond||the condition variable to wait on|
|mutex||the mutex used to coordinate thread access|
Returns 0 when it is signaled or a negative error code on failure; call SDL_GetError() for more information.
This function unlocks the specified
mutex and waits for another thread to call SDL_CondSignal() or SDL_CondBroadcast() on the condition variable
cond. Once the condition variable is signaled, the mutex is re-locked and the function returns.
The mutex must be locked before calling this function.
This function is the equivalent of calling SDL_CondWaitTimeout() with a time length of
This function is available since SDL 2.0.0.