Wait for a thread to finish.
void SDL_WaitThread(SDL_Thread * thread, int *status);
|thread||the SDL_Thread pointer that was returned from the SDL_CreateThread() call that started this thread|
|status||pointer to an integer that will receive the value returned from the thread function by its 'return', or NULL to not receive such value back.|
Threads that haven't been detached will remain (as a "zombie") until this function cleans them up. Not doing so is a resource leak.
Once a thread has been cleaned up through this function, the SDL_Thread that references it becomes invalid and should not be referenced again. As such, only one thread may call SDL_WaitThread() on another.
The return code for the thread function is placed in the area pointed to by
status is not NULL.
You may not wait on a thread that has been used in a call to SDL_DetachThread(). Use either that function or this one, but not both, or behavior is undefined.
It is safe to pass a NULL thread to this function; it is a no-op.
Note that the thread pointer is freed by this function and is not valid afterward.
This function is available since SDL 2.0.0.