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/*
*
* This is free software. You can redistribute it and/or modify under
* the terms of the GNU General Public License version 2.
*
* Copyright (C) 1998 by kra
*
*/
#include <stdio.h>
#include <unistd.h>
#include "hunt.h"
struct list timejob_list = LIST_INIT(struct timejob, j_next);
pthread_t timejob_thr;
pthread_mutex_t timejob_mutex = PTHREAD_MUTEX_INITIALIZER;
pthread_cond_t timejob_cond = PTHREAD_COND_INITIALIZER;
pthread_cond_t timejob_curr_cond = PTHREAD_COND_INITIALIZER;
pthread_cond_t timejob_run_cond = PTHREAD_COND_INITIALIZER;
struct timejob *timejob_curr = NULL;
int timejob_run = 1;
static int __register(struct timejob *tj)
{
struct list_iterator li;
int i, retval;
int insert_it;
struct timejob *p;
retval = 0;
insert_it = 0;
i = 0;
list_iter_set(&li, &timejob_list);
while ((p = list_iter_get(&li))) {
if (p->j_ts.tv_sec > tj->j_ts.tv_sec ||
(p->j_ts.tv_sec == tj->j_ts.tv_sec && p->j_ts.tv_nsec > tj->j_ts.tv_nsec)) {
insert_it = 1;
break;
}
i++;
}
list_iter_end(&li);
if (insert_it) {
list_insert_at(&timejob_list, i, tj);
if (i == 0)
retval = 1; /* reschedule timer */
} else {
list_enqueue(&timejob_list, tj);
if (list_count(&timejob_list) == 1)
retval = 1; /* reschedule timer */
}
#if 0
printf("registered:\n");
list_iter_set(&li, &timejob_list);
while ((p = list_iter_get(&li))) {
printf("%x - %d\n", p, p->j_arg_sec);
};
list_iter_end(&li);
#endif
return retval;
}
void register_timejob(struct timejob *tj)
{
pthread_mutex_lock(&timejob_mutex);
if (__register(tj))
pthread_cond_signal(&timejob_cond);
pthread_mutex_unlock(&timejob_mutex);
}
void register_timejob_rel(struct timejob *tj, int relsec)
{
struct timeval tv;
gettimeofday(&tv, NULL);
tj->j_ts.tv_sec = tv.tv_sec + relsec;
tj->j_ts.tv_nsec = tv.tv_usec * 1000;
register_timejob(tj);
}
void register_timejob_milsec_rel(struct timejob *tj, int milsec)
{
struct timeval tv;
int sec, msec;
gettimeofday(&tv, NULL);
sec = milsec / 1000;
msec = milsec % 1000;
tj->j_ts.tv_sec = tv.tv_sec + sec;
tj->j_ts.tv_nsec = tv.tv_usec * 1000 + msec * 1000000;
register_timejob(tj);
}
void unregister_timejob(struct timejob *tj)
{
pthread_mutex_lock(&timejob_mutex);
while (timejob_curr == tj)
pthread_cond_wait(&timejob_curr_cond, &timejob_mutex);
list_remove(&timejob_list, tj);
pthread_cond_signal(&timejob_cond);
pthread_mutex_unlock(&timejob_mutex);
}
static void *timejob_thread(void *arg)
{
struct timejob *tj;
struct timeval tv;
struct timespec timeout;
int sec;
setpriority(PRIO_PROCESS, getpid(), 10);
pthread_mutex_lock(&timejob_mutex);
while (timejob_run && pthread_kill(main_thread_id, 0) == 0) {
tj = list_peek(&timejob_list);
if (tj) {
gettimeofday(&tv, NULL);
if (tv.tv_sec > tj->j_ts.tv_sec ||
(tv.tv_sec == tj->j_ts.tv_sec && tv.tv_usec * 1000 >= tj->j_ts.tv_nsec)) {
timejob_curr = tj;
list_pop(&timejob_list);
pthread_mutex_unlock(&timejob_mutex);
sec = timejob_curr->j_func(timejob_curr->j_arg,
timejob_curr->j_arg_sec);
pthread_mutex_lock(&timejob_mutex);
if (sec) {
gettimeofday(&tv, NULL);
tj->j_ts.tv_sec = tv.tv_sec + sec;
tj->j_ts.tv_nsec = tv.tv_usec * 1000;
__register(tj);
}
timejob_curr = NULL;
pthread_cond_signal(&timejob_curr_cond);
} else {
/* copy timeout as the struct can be removed from the list */
timeout = tj->j_ts;
pthread_cond_timedwait(&timejob_cond, &timejob_mutex, &timeout);
}
} else {
pthread_cond_wait(&timejob_cond, &timejob_mutex);
}
}
timejob_run = 2;
pthread_cond_signal(&timejob_run_cond);
pthread_mutex_unlock(&timejob_mutex);
return NULL;
}
void timer_init(void)
{
if (pthread_create(&timejob_thr, NULL, timejob_thread, NULL))
exit(1);
}
void timer_done(void)
{
pthread_mutex_lock(&timejob_mutex);
timejob_run = 0;
pthread_cond_signal(&timejob_cond);
while (timejob_run != 2 && pthread_kill(timejob_thr, 0) == 0)
pthread_cond_wait(&timejob_run_cond, &timejob_mutex);
pthread_mutex_unlock(&timejob_mutex);
}
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