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79 lines
2.3 KiB
C
79 lines
2.3 KiB
C
/* Helper program for testing the pthread_rwlock_t pretty printer.
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Copyright (C) 2016-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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/* Keep the calls to the pthread_* functions on separate lines to make it easy
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to advance through the program using the gdb 'next' command. */
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#include <pthread.h>
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#define PASS 0
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#define FAIL 1
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static int test_locking_reader (pthread_rwlock_t *rwlock);
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static int test_locking_writer (pthread_rwlock_t *rwlock);
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int
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main (void)
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{
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pthread_rwlock_t rwlock;
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int result = FAIL;
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if (test_locking_reader (&rwlock) == PASS
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&& test_locking_writer (&rwlock) == PASS)
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result = PASS;
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/* Else, one of the pthread_rwlock* functions failed. */
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return result;
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}
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/* Tests locking the rwlock multiple times as a reader. */
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static int
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test_locking_reader (pthread_rwlock_t *rwlock)
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{
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int result = FAIL;
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if (pthread_rwlock_init (rwlock, NULL) == 0
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&& pthread_rwlock_rdlock (rwlock) == 0 /* Test locking (reader). */
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&& pthread_rwlock_rdlock (rwlock) == 0
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&& pthread_rwlock_rdlock (rwlock) == 0
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&& pthread_rwlock_unlock (rwlock) == 0
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&& pthread_rwlock_unlock (rwlock) == 0
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&& pthread_rwlock_unlock (rwlock) == 0
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&& pthread_rwlock_destroy (rwlock) == 0)
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result = PASS;
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return result;
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}
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/* Tests locking the rwlock as a writer. */
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static int
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test_locking_writer (pthread_rwlock_t *rwlock)
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{
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int result = FAIL;
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if (pthread_rwlock_init (rwlock, NULL) == 0
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&& pthread_rwlock_wrlock (rwlock) == 0 /* Test locking (writer). */
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&& pthread_rwlock_unlock (rwlock) == 0
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&& pthread_rwlock_destroy (rwlock) == 0)
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result = PASS;
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return result;
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}
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