Time routines
These functions are declared in the main Allegro header file:
#include <allegro5/allegro.h>ALLEGRO_TIMEOUT
typedef struct ALLEGRO_TIMEOUT ALLEGRO_TIMEOUT;Represent a timeout value. The size of the structure is known so it can be statically allocated. The contents are private.
See also: al_init_timeout
al_get_time
double al_get_time(void)Return the number of seconds since the Allegro library was initialised. The return value is undefined if Allegro is uninitialised. The resolution depends on the used driver, but typically can be in the order of microseconds.
al_init_timeout
void al_init_timeout(ALLEGRO_TIMEOUT *timeout, double seconds)Set timeout value of some number of seconds after the function call.
For compatibility with all platforms, seconds must be 2,147,483.647 seconds or less.
See also: ALLEGRO_TIMEOUT, al_wait_for_event_until
al_rest
void al_rest(double seconds)Waits for the specified number of seconds. This tells the system to pause the current thread for the given amount of time. With some operating systems, the accuracy can be in the order of 10ms. That is, even
al_rest(0.000001)might pause for something like 10ms. Also see the section on Timer routines for easier ways to time your program without using up all CPU.