Allegro 5 api
#include <allegro5/allegro.h> ALLEGRO_THREAD *al_create_thread( void *(*proc)(ALLEGRO_THREAD *thread, void *arg), void *arg)
Spawn a new thread which begins executing proc. The new thread is passed its own thread handle and the value arg.
Returns a pointer to the thread on success. Otherwise, returns NULL if there was an error.
al_start_thread(3alleg5), al_join_thread(3alleg5).