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103 lines
2.2 KiB
C
103 lines
2.2 KiB
C
/* Copyright (C) 2002-2023 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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#include <errno.h>
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
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static void *
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tf (void *arg)
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{
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if (pthread_mutex_lock (&lock) != 0)
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{
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puts ("child: mutex_lock failed");
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return NULL;
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}
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return (void *) 42l;
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}
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static int
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do_test (void)
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{
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pthread_t th;
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if (pthread_mutex_lock (&lock) != 0)
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{
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puts ("mutex_lock failed");
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exit (1);
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}
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if (pthread_create (&th, NULL, tf, NULL) != 0)
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{
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puts ("mutex_create failed");
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exit (1);
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}
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void *status;
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int val = pthread_tryjoin_np (th, &status);
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if (val == 0)
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{
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puts ("1st tryjoin succeeded");
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exit (1);
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}
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else if (val != EBUSY)
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{
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puts ("1st tryjoin didn't return EBUSY");
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exit (1);
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}
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if (pthread_mutex_unlock (&lock) != 0)
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{
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puts ("mutex_unlock failed");
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exit (1);
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}
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while ((val = pthread_tryjoin_np (th, &status)) != 0)
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{
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if (val != EBUSY)
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{
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printf ("tryjoin returned %s (%d), expected only 0 or EBUSY\n",
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strerror (val), val);
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exit (1);
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}
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/* Delay minimally. */
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struct timespec ts = { .tv_sec = 0, .tv_nsec = 10000000 };
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nanosleep (&ts, NULL);
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}
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if (status != (void *) 42l)
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{
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printf ("return value %p, expected %p\n", status, (void *) 42l);
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exit (1);
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}
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return 0;
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}
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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