al_get_thread_should_stop
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 or al_set_thread_should_stop on this thread.
See also: al_join_thread, al_set_thread_should_stop.
Note: We don't support forceful killing of threads.
Examples: ex_threads2
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