mirror of
https://gitlab.isc.org/isc-projects/bind9
synced 2025-08-28 21:17:54 +00:00
128 lines
3.6 KiB
C
128 lines
3.6 KiB
C
/*
|
|
* Copyright (C) 1998-2001 Internet Software Consortium.
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
|
|
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
|
|
* INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
|
|
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
|
|
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
|
|
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
|
|
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
/* $Id: rwlock_test.c,v 1.19 2001/01/09 21:41:36 bwelling Exp $ */
|
|
|
|
#include <config.h>
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
#include <isc/thread.h>
|
|
#include <isc/rwlock.h>
|
|
#include <isc/string.h>
|
|
#include <isc/util.h>
|
|
|
|
isc_rwlock_t lock;
|
|
|
|
static void *
|
|
run1(void *arg) {
|
|
char *message = arg;
|
|
|
|
RUNTIME_CHECK(isc_rwlock_lock(&lock, isc_rwlocktype_read) ==
|
|
ISC_R_SUCCESS);
|
|
printf("%s got READ lock\n", message);
|
|
sleep(1);
|
|
printf("%s giving up READ lock\n", message);
|
|
RUNTIME_CHECK(isc_rwlock_unlock(&lock, isc_rwlocktype_read) ==
|
|
ISC_R_SUCCESS);
|
|
RUNTIME_CHECK(isc_rwlock_lock(&lock, isc_rwlocktype_read) ==
|
|
ISC_R_SUCCESS);
|
|
printf("%s got READ lock\n", message);
|
|
sleep(1);
|
|
printf("%s giving up READ lock\n", message);
|
|
RUNTIME_CHECK(isc_rwlock_unlock(&lock, isc_rwlocktype_read) ==
|
|
ISC_R_SUCCESS);
|
|
RUNTIME_CHECK(isc_rwlock_lock(&lock, isc_rwlocktype_write) ==
|
|
ISC_R_SUCCESS);
|
|
printf("%s got WRITE lock\n", message);
|
|
sleep(1);
|
|
printf("%s giving up WRITE lock\n", message);
|
|
RUNTIME_CHECK(isc_rwlock_unlock(&lock, isc_rwlocktype_write) ==
|
|
ISC_R_SUCCESS);
|
|
return (NULL);
|
|
}
|
|
|
|
static void *
|
|
run2(void *arg) {
|
|
char *message = arg;
|
|
|
|
RUNTIME_CHECK(isc_rwlock_lock(&lock, isc_rwlocktype_write) ==
|
|
ISC_R_SUCCESS);
|
|
printf("%s got WRITE lock\n", message);
|
|
sleep(1);
|
|
printf("%s giving up WRITE lock\n", message);
|
|
RUNTIME_CHECK(isc_rwlock_unlock(&lock, isc_rwlocktype_write) ==
|
|
ISC_R_SUCCESS);
|
|
RUNTIME_CHECK(isc_rwlock_lock(&lock, isc_rwlocktype_write) ==
|
|
ISC_R_SUCCESS);
|
|
printf("%s got WRITE lock\n", message);
|
|
sleep(1);
|
|
printf("%s giving up WRITE lock\n", message);
|
|
RUNTIME_CHECK(isc_rwlock_unlock(&lock, isc_rwlocktype_write) ==
|
|
ISC_R_SUCCESS);
|
|
RUNTIME_CHECK(isc_rwlock_lock(&lock, isc_rwlocktype_read) ==
|
|
ISC_R_SUCCESS);
|
|
printf("%s got READ lock\n", message);
|
|
sleep(1);
|
|
printf("%s giving up READ lock\n", message);
|
|
RUNTIME_CHECK(isc_rwlock_unlock(&lock, isc_rwlocktype_read) ==
|
|
ISC_R_SUCCESS);
|
|
return (NULL);
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[]) {
|
|
unsigned int nworkers;
|
|
unsigned int i;
|
|
isc_thread_t workers[100];
|
|
char name[100];
|
|
void *dupname;
|
|
|
|
if (argc > 1)
|
|
nworkers = atoi(argv[1]);
|
|
else
|
|
nworkers = 2;
|
|
if (nworkers > 100)
|
|
nworkers = 100;
|
|
printf("%d workers\n", nworkers);
|
|
|
|
RUNTIME_CHECK(isc_rwlock_init(&lock, 5, 10) == ISC_R_SUCCESS);
|
|
|
|
for (i = 0; i < nworkers; i++) {
|
|
sprintf(name, "%02u", i);
|
|
dupname = strdup(name);
|
|
RUNTIME_CHECK(dupname != NULL);
|
|
if (i != 0 && i % 3 == 0)
|
|
RUNTIME_CHECK(isc_thread_create(run1, dupname,
|
|
&workers[i]) ==
|
|
ISC_R_SUCCESS);
|
|
else
|
|
RUNTIME_CHECK(isc_thread_create(run2, dupname,
|
|
&workers[i]) ==
|
|
ISC_R_SUCCESS);
|
|
}
|
|
|
|
for (i = 0; i < nworkers; i++)
|
|
(void)isc_thread_join(workers[i], NULL);
|
|
|
|
isc_rwlock_destroy(&lock);
|
|
|
|
return (0);
|
|
}
|