al_create_thread_with_stacksize - Allegro 5 API

       Spawn  a  new  thread  with  the  give stacksize in bytes 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_create_thread_with_stacksize - Allegro 5 API

al_start_thread(3alleg5), al_join_thread(3alleg5).

Allegro reference manual                                                al_create_thread_with_stacksize(3alleg5)

       5.2.5

              [UnstableAPI]: New API, may want a better way to specify thread options.

              #include <allegro5/allegro.h>

              ALLEGRO_THREAD *al_create_thread_with_stacksize(
                 void *(*proc)(ALLEGRO_THREAD *thread, void *arg), void *arg, size_t stacksize)