dot_testing/progs/timerlib.c

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struct timer {
int s; /* seconds */
int d; /* data storage */
void (*u)(struct timer *t); /* update function */
int (*c)(struct timer *t); /* stop check function */
int (*p)(struct timer *t); /* pause check function */
};
void timerdec(struct timer *t) {
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if (t->s != 0) t->s--;
}
void timerinc(struct timer *t) {
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t->s++;
}
void timerupdate(struct timer *t) {
if(t->u != NULL) t->u(t);
}
int timerstate(int (*f)(struct timer *t), struct timer *t) {
if(f != NULL) {
if(f(t)) return 1;
else return 0;
}
return 0;
}
int timerstop(struct timer *t) {
return timerstate(t->c, t);
}
int timerpause(struct timer *t) {
return timerstate(t->p, t);
}
int timerzero(struct timer *t) {
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if(t->s == 0) return 1;
return 0;
}
int seconds(int t) {
return t % 60;
}
int minutes(int t) {
return (t / 60) % 60;
}
int minute(int t) {
return t / 60;
}
int hours(int t) {
return (t / 60) / 60;
}
struct timer *timerinit(void) {
struct timer *t = malloc(sizeof *t);
t->s = 0;
t->d = 0;
t->u = NULL;
t->c = NULL;
t->p = NULL;
return t;
}