/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include "lint.h"
#include <time.h>
#include <sys/types.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "sigev_thread.h"
/*
* System call wrappers found elsewhere in libc (common/sys/__clock_timer.s).
*/
extern int __clock_getres(clockid_t, timespec_t *);
extern int __clock_gettime(clockid_t, timespec_t *);
extern int __clock_settime(clockid_t, const timespec_t *);
extern int __timer_create(clockid_t, struct sigevent *, timer_t *);
extern int __timer_delete(timer_t);
extern int __timer_getoverrun(timer_t);
extern int __timer_gettime(timer_t, itimerspec_t *);
extern int __timer_settime(timer_t, int, const itimerspec_t *, itimerspec_t *);
/*
* Array of pointers to tcd's, indexed by timer id.
* No more than 'timer_max' timers can be created by any process.
*/
int timer_max = 0;
thread_communication_data_t **timer_tcd;
static pthread_once_t timer_once = PTHREAD_ONCE_INIT;
static void
timer_init(void)
{
timer_max = (int)_sysconf(_SC_TIMER_MAX);
timer_tcd = malloc(timer_max * sizeof (*timer_tcd));
(void) memset(timer_tcd, 0, timer_max * sizeof (*timer_tcd));
}
int
clock_getres(clockid_t clock_id, timespec_t *res)
{
return (__clock_getres(clock_id, res));
}
int
clock_gettime(clockid_t clock_id, timespec_t *tp)
{
return (__clock_gettime(clock_id, tp));
}
int
clock_settime(clockid_t clock_id, const timespec_t *tp)
{
return (__clock_settime(clock_id, tp));
}
int
timer_create(clockid_t clock_id, struct sigevent *sigevp, timer_t *timerid)
{
struct sigevent sigevent;
port_notify_t port_notify;
thread_communication_data_t *tcdp;
int sigev_thread = 0;
int rc;
(void) pthread_once(&timer_once, timer_init);
if (sigevp != NULL &&
sigevp->sigev_notify == SIGEV_THREAD &&
sigevp->sigev_notify_function != NULL) {
sigev_thread = 1;
tcdp = setup_sigev_handler(sigevp, TIMER);
if (tcdp == NULL)
return (-1);
/* copy the sigevent structure so we can modify it */
sigevent = *sigevp;
sigevp = &sigevent;
port_notify.portnfy_port = tcdp->tcd_port;
port_notify.portnfy_user = NULL;
sigevp->sigev_value.sival_ptr = &port_notify;
}
rc = __timer_create(clock_id, sigevp, timerid);
if (sigev_thread) {
if (rc == 0) {
if ((rc = launch_spawner(tcdp)) != 0)
(void) __timer_delete(*timerid);
else
timer_tcd[*timerid] = tcdp;
}
if (rc != 0)
free_sigev_handler(tcdp);
}
return (rc);
}
int
timer_delete(timer_t timerid)
{
int rc;
if ((rc = del_sigev_timer(timerid)) == 0)
return (__timer_delete(timerid));
else
return (rc);
}
int
timer_getoverrun(timer_t timerid)
{
return (__timer_getoverrun(timerid) + sigev_timer_getoverrun(timerid));
}
int
timer_gettime(timer_t timerid, itimerspec_t *value)
{
return (__timer_gettime(timerid, value));
}
int
timer_settime(timer_t timerid, int flags, const itimerspec_t *value,
itimerspec_t *ovalue)
{
return (__timer_settime(timerid, flags, value, ovalue));
}
/*
* Cleanup after fork1() in the child process.
*/
void
postfork1_child_sigev_timer(void)
{
thread_communication_data_t *tcdp;
int timer;
for (timer = 0; timer < timer_max; timer++) {
if ((tcdp = timer_tcd[timer]) != NULL) {
timer_tcd[timer] = NULL;
tcd_teardown(tcdp);
}
}
}