151 lines
3.9 KiB
C
151 lines
3.9 KiB
C
/* $NetBSD: test_mutex2.c,v 1.3 2007/02/05 22:48:02 ad Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2007 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Andrew Doran.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: test_mutex2.c,v 1.3 2007/02/05 22:48:02 ad Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/kthread.h>
|
|
#include <sys/kernel.h>
|
|
|
|
#define NTHREADS 32
|
|
#define SECONDS 60
|
|
|
|
int testcall(struct lwp *, void *, register_t *);
|
|
void thread1(void *);
|
|
void thread_exit(int);
|
|
void thread_enter(int *);
|
|
|
|
struct proc *test_threads[NTHREADS];
|
|
kmutex_t test_mutex;
|
|
kcondvar_t test_cv;
|
|
int test_count;
|
|
int test_exit;
|
|
|
|
static int primes[NTHREADS] = {
|
|
131, 137, 139, 149,
|
|
151, 157, 163, 167,
|
|
173, 179, 181, 191,
|
|
193, 197, 199, 211,
|
|
223, 227, 229, 233,
|
|
239, 241, 251, 257,
|
|
263, 269, 271, 277,
|
|
281, 283, 293, 307,
|
|
};
|
|
|
|
void
|
|
thread_enter(int *nlocks)
|
|
{
|
|
struct lwp *l = curlwp;
|
|
|
|
KERNEL_UNLOCK_ALL(l, nlocks);
|
|
lwp_lock(l);
|
|
l->l_usrpri = MAXPRI;
|
|
lwp_changepri(l, MAXPRI);
|
|
lwp_unlock(l);
|
|
}
|
|
|
|
void
|
|
thread_exit(int nlocks)
|
|
{
|
|
|
|
mutex_enter(&test_mutex);
|
|
if (--test_count == 0)
|
|
cv_signal(&test_cv);
|
|
mutex_exit(&test_mutex);
|
|
|
|
KERNEL_LOCK(nlocks, curlwp);
|
|
kthread_exit(0);
|
|
}
|
|
|
|
void
|
|
thread1(void *cookie)
|
|
{
|
|
int count, nlocks;
|
|
|
|
thread_enter(&nlocks);
|
|
|
|
for (count = 0; !test_exit; count++) {
|
|
mutex_enter(&test_mutex);
|
|
if ((count % *(int *)cookie) == 0)
|
|
yield();
|
|
mutex_exit(&test_mutex);
|
|
if ((count % curproc->p_pid) == 0)
|
|
yield();
|
|
}
|
|
|
|
thread_exit(nlocks);
|
|
}
|
|
|
|
int
|
|
testcall(struct lwp *l, void *uap, register_t *retval)
|
|
{
|
|
int i;
|
|
|
|
mutex_init(&test_mutex, MUTEX_DEFAULT, IPL_NONE);
|
|
cv_init(&test_cv, "testcv");
|
|
|
|
printf("test: creating threads\n");
|
|
|
|
test_count = NTHREADS;
|
|
test_exit = 0;
|
|
|
|
for (i = 0; i < test_count; i++)
|
|
kthread_create1(thread1, &primes[i], &test_threads[i],
|
|
"thread%d", i);
|
|
|
|
printf("test: sleeping\n");
|
|
|
|
mutex_enter(&test_mutex);
|
|
while (test_count != 0) {
|
|
(void)cv_timedwait(&test_cv, &test_mutex, hz * SECONDS);
|
|
test_exit = 1;
|
|
}
|
|
mutex_exit(&test_mutex);
|
|
|
|
printf("test: finished\n");
|
|
|
|
cv_destroy(&test_cv);
|
|
mutex_destroy(&test_mutex);
|
|
|
|
return 0;
|
|
}
|