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/* ----------------------------------------------------------
% (C)1995 Institute for New Generation Computer Technology
% (Read COPYRIGHT for detailed information.)
% (C)1996, 1997, 1998, 1999 Japan Information Processing Development Center
% (Read COPYRIGHT-JIPDEC for detailed information.)
----------------------------------------------------------- */
#include <klic/basic.h>
#ifdef USETIMER
#include <sys/time.h>
#include <klic/struct.h>
#include <klic/timer.h>
#include <klic/sighndl.h>
extern char *malloc_check();
void klic_timer_interrupt_handler()
{
declare_globals;
interrupt_off = 0;
heaplimit = 0;
signal_done = 0;
signal_flags[SIGALRM] = 1;
}
struct timer_reservation_rec {
struct timeval at;
struct timeval interval;
struct timer_reservation_rec *next;
int (*handler)();
q data;
};
static struct timer_reservation_rec *timer_reservations;
static struct timer_reservation_rec *timer_rsv_free;
static int process_timed_instantiation(allocp, data)
q *allocp;
q data;
{
declare_globals;
extern q *do_unify_value();
heapp = do_unify_value(allocp, data, NILATOM);
return 0;
}
static int process_simple_timer_handler(allocp, data)
q *allocp;
q data;
{
declare_globals;
return ((int (*)())((unsigned long)data-ATOMIC))(allocp, SIGALRM);
}
int
process_timer_interrupt(allocp, sig)
q* allocp;
long sig;
{
declare_globals;
struct timeval now;
klic_gettod(&now);
while (timer_reservations != 0 &&
NotLaterThan(timer_reservations->at, now)) {
int result =
timer_reservations-> handler(allocp, timer_reservations->data);
if (result != 0) return result;
allocp = heapp;
if (TimeIsZero(timer_reservations->interval)) {
struct timer_reservation_rec *tmp = timer_reservations->next;
timer_reservations->next = timer_rsv_free;
timer_rsv_free = timer_reservations;
timer_reservations = tmp;
} else {
struct timer_reservation_rec **tmp, *trec;
trec = timer_reservations;
TimeAdd(trec->at, trec->interval, trec->at);
timer_reservations = timer_reservations->next;
for (tmp = &timer_reservations;
*tmp != 0 && NotLaterThan((*tmp)->at, trec->at);
tmp = &(*tmp)->next)
;
trec->next = *tmp;
*tmp = trec;
}
}
if (timer_reservations != 0) {
call_at_specified_time(timer_reservations->at.tv_sec,
timer_reservations->at.tv_usec,
klic_timer_interrupt_handler);
}
heapp = allocp;
return 0;
}
static q* gc_timer_data(allocp, ntop, otop, nsize, osize)
q *allocp, *ntop, *otop;
unsigned long nsize, osize;
{
struct timer_reservation_rec *trec;
extern q *copy_one_term();
for (trec = timer_reservations;
trec != 0;
trec = trec->next) {
allocp =
copy_one_term(&trec->data, allocp, ntop, otop, nsize, osize);
}
return allocp;
}
void init_klic_timer_handling()
{
timer_reservations = 0;
timer_rsv_free = 0;
register_gc_hook(gc_timer_data);
add_slit_check_handler(SIGALRM, process_timer_interrupt);
}
static struct timer_reservation_rec *
alloc_timer_reservation_rec()
{
struct timer_reservation_rec *newrec;
if (timer_rsv_free == 0) {
newrec = (struct timer_reservation_rec *)
malloc_check(sizeof(struct timer_reservation_rec));
} else {
newrec = timer_rsv_free;
timer_rsv_free = timer_rsv_free->next;
}
return newrec;
}
q *set_simple_interval_timer_handler(allocp, sec, usec, func)
q *allocp;
long sec, usec;
int (*func)();
{
declare_globals;
struct timeval now;
struct timer_reservation_rec *newrec, **tmp;
klic_gettod(&now);
newrec = alloc_timer_reservation_rec();
newrec->at = now;
TimeSet(newrec->interval, sec, usec);
TimeAdd(newrec->at, newrec->interval, newrec->at);
newrec->handler = process_simple_timer_handler;
newrec->data = makeatomic(func);
for (tmp = &timer_reservations;
*tmp != 0 && NotLaterThan((*tmp)->at, newrec->at);
tmp = &(*tmp)->next)
;
newrec->next = *tmp;
*tmp = newrec;
process_timer_interrupt(allocp, SIGALRM);
return heapp;
}
q *reserve_klic_timer_interrupt(allocp, sec, usec, vrbl)
q *allocp;
long sec, usec;
q vrbl;
{
declare_globals;
struct timer_reservation_rec *newrec, **tmp;
newrec = alloc_timer_reservation_rec();
TimeSet(newrec->at, sec, usec);
TimeSet(newrec->interval, 0, 0);
newrec->handler = process_timed_instantiation;
newrec->data = vrbl;
for (tmp = &timer_reservations;
*tmp != 0 && NotLaterThan((*tmp)->at, newrec->at);
tmp = &(*tmp)->next)
;
newrec->next = *tmp;
*tmp = newrec;
process_timer_interrupt(allocp, SIGALRM);
return heapp;
}
#endif
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