/* * File: gtimer.h * -------------- * This interface exports a general interval timer. */ #ifndef _gtimer_h #define _gtimer_h #include "cslib.h"/* * Type: GTimer * ------------ * This type implements a simple interval timer that generates a timer * event with a specified frequency. */ typedef struct GTimerCDT *GTimer;/* * Function: newGTimer * Usage: timer = newGTimer(milliseconds); * --------------------------------------- * Creates a timer that generates a timer event each time the specified * number of milliseconds has elapsed. No events are generated until the * client calls startTimer. */ GTimer newGTimer(double milliseconds);/* * Function: freeGTimer * Usage: freeGTimer(timer); * ------------------------- * Frees the resources associated with the timer. */ void freeGTimer(GTimer timer);/* * Function: startTimer * Usage: startTimer(timer); * ------------------------- * Starts the timer. A timer continues to generate timer events until it * is stopped; to achieve the effect of a one-shot timer, the simplest * approach is to call the stop function inside the event handler. */ void startTimer(GTimer timer);/* * Function: stopTimer * Usage: stopTimer(timer); * ------------------------ * Stops the timer so that it stops generating events. */ void stopTimer(GTimer timer); #endif