1998-12-12 20:48:14 +00:00
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/*
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2000-06-22 01:27:11 +00:00
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* Copyright (C) 1998-2000 Internet Software Consortium.
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1998-12-12 20:48:14 +00:00
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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2000-07-27 09:55:03 +00:00
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
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* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
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* INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
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* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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1998-12-12 20:48:14 +00:00
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*/
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1998-11-12 02:02:52 +00:00
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2000-07-27 09:55:03 +00:00
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/* $Id: rwlock_test.c,v 1.17 2000/07/27 09:38:26 tale Exp $ */
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2000-06-22 22:00:42 +00:00
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1998-12-12 19:25:20 +00:00
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#include <config.h>
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1998-11-12 02:02:52 +00:00
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <isc/thread.h>
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#include <isc/rwlock.h>
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2000-05-08 14:38:29 +00:00
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#include <isc/string.h>
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2000-04-28 02:12:16 +00:00
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#include <isc/util.h>
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1998-11-12 02:02:52 +00:00
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isc_rwlock_t lock;
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static void *
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run1(void *arg) {
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char *message = arg;
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1999-01-06 20:26:18 +00:00
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RUNTIME_CHECK(isc_rwlock_lock(&lock, isc_rwlocktype_read) ==
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ISC_R_SUCCESS);
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1998-11-12 02:02:52 +00:00
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printf("%s got READ lock\n", message);
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sleep(1);
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printf("%s giving up READ lock\n", message);
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1999-01-06 20:26:18 +00:00
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RUNTIME_CHECK(isc_rwlock_unlock(&lock, isc_rwlocktype_read) ==
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1998-11-12 02:02:52 +00:00
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ISC_R_SUCCESS);
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1999-01-06 20:26:18 +00:00
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RUNTIME_CHECK(isc_rwlock_lock(&lock, isc_rwlocktype_read) ==
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ISC_R_SUCCESS);
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1998-11-12 02:02:52 +00:00
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printf("%s got READ lock\n", message);
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sleep(1);
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printf("%s giving up READ lock\n", message);
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1999-01-06 20:26:18 +00:00
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RUNTIME_CHECK(isc_rwlock_unlock(&lock, isc_rwlocktype_read) ==
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1998-11-12 02:02:52 +00:00
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ISC_R_SUCCESS);
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1999-01-06 20:26:18 +00:00
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RUNTIME_CHECK(isc_rwlock_lock(&lock, isc_rwlocktype_write) ==
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ISC_R_SUCCESS);
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1998-11-12 02:02:52 +00:00
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printf("%s got WRITE lock\n", message);
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sleep(1);
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printf("%s giving up WRITE lock\n", message);
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1999-01-06 20:26:18 +00:00
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RUNTIME_CHECK(isc_rwlock_unlock(&lock, isc_rwlocktype_write) ==
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1998-11-12 02:02:52 +00:00
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ISC_R_SUCCESS);
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return (NULL);
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}
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static void *
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run2(void *arg) {
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char *message = arg;
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1999-01-06 20:26:18 +00:00
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RUNTIME_CHECK(isc_rwlock_lock(&lock, isc_rwlocktype_write) ==
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ISC_R_SUCCESS);
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1998-11-12 02:02:52 +00:00
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printf("%s got WRITE lock\n", message);
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sleep(1);
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printf("%s giving up WRITE lock\n", message);
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1999-01-06 20:26:18 +00:00
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RUNTIME_CHECK(isc_rwlock_unlock(&lock, isc_rwlocktype_write) ==
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1998-11-12 02:02:52 +00:00
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ISC_R_SUCCESS);
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1999-01-06 20:26:18 +00:00
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RUNTIME_CHECK(isc_rwlock_lock(&lock, isc_rwlocktype_write) ==
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ISC_R_SUCCESS);
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1998-11-12 02:02:52 +00:00
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printf("%s got WRITE lock\n", message);
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sleep(1);
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printf("%s giving up WRITE lock\n", message);
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1999-01-06 20:26:18 +00:00
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RUNTIME_CHECK(isc_rwlock_unlock(&lock, isc_rwlocktype_write) ==
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1998-11-12 02:02:52 +00:00
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ISC_R_SUCCESS);
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1999-01-06 20:26:18 +00:00
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RUNTIME_CHECK(isc_rwlock_lock(&lock, isc_rwlocktype_read) ==
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ISC_R_SUCCESS);
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1998-11-12 02:02:52 +00:00
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printf("%s got READ lock\n", message);
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sleep(1);
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printf("%s giving up READ lock\n", message);
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1999-01-06 20:26:18 +00:00
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RUNTIME_CHECK(isc_rwlock_unlock(&lock, isc_rwlocktype_read) ==
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1998-11-12 02:02:52 +00:00
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ISC_R_SUCCESS);
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return (NULL);
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}
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1999-07-03 21:15:06 +00:00
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int
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1998-11-12 02:02:52 +00:00
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main(int argc, char *argv[]) {
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unsigned int nworkers;
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unsigned int i;
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1998-11-12 23:31:42 +00:00
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isc_thread_t workers[100];
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1998-11-12 02:02:52 +00:00
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char name[100];
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void *dupname;
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if (argc > 1)
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nworkers = atoi(argv[1]);
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else
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nworkers = 2;
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1998-11-12 23:31:42 +00:00
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if (nworkers > 100)
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nworkers = 100;
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1998-11-12 02:02:52 +00:00
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printf("%d workers\n", nworkers);
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1999-01-06 20:26:18 +00:00
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RUNTIME_CHECK(isc_rwlock_init(&lock, 5, 10) == ISC_R_SUCCESS);
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1998-11-12 02:02:52 +00:00
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for (i = 0; i < nworkers; i++) {
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sprintf(name, "%02u", i);
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dupname = strdup(name);
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1999-01-06 20:26:18 +00:00
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RUNTIME_CHECK(dupname != NULL);
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1998-11-12 02:02:52 +00:00
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if (i != 0 && i % 3 == 0)
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1999-01-06 20:26:18 +00:00
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RUNTIME_CHECK(isc_thread_create(run1, dupname,
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&workers[i]) ==
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1998-11-12 02:02:52 +00:00
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ISC_R_SUCCESS);
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else
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1999-01-06 20:26:18 +00:00
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RUNTIME_CHECK(isc_thread_create(run2, dupname,
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&workers[i]) ==
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1998-11-12 02:02:52 +00:00
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ISC_R_SUCCESS);
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}
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for (i = 0; i < nworkers; i++)
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(void)isc_thread_join(workers[i], NULL);
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isc_rwlock_destroy(&lock);
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1999-07-03 21:15:06 +00:00
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return (0);
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1998-11-12 02:02:52 +00:00
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}
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