al_get_thread_should_stop - Man Page

#include <allegro5/allegro.h>

bool al_get_thread_should_stop(ALLEGRO_THREAD *thread)

Check if another thread is waiting for thread to stop. Threads which run in a loop should check this periodically and act on it when convenient.

Returns true if another thread has called al_join_thread(3) or al_set_thread_should_stop(3) on this thread.

al_join_thread(3),  al_set_thread_should_stop(3).

Note: We don’t support forceful killing of threads.

al_join_thread(3), al_set_thread_should_stop(3).