mirror of git://sourceware.org/git/glibc.git
163 lines
3.5 KiB
C
163 lines
3.5 KiB
C
/* Copyright (C) 2002-2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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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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<http://www.gnu.org/licenses/>. */
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#include <pthread.h>
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#include <signal.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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static pthread_mutex_t m1 = PTHREAD_MUTEX_INITIALIZER;
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static pthread_mutex_t m2 = PTHREAD_MUTEX_INITIALIZER;
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static int cntr;
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static void
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cleanup (void *arg)
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{
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if (arg != (void *) 42l)
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cntr = 42;
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else
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cntr = 1;
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}
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static void *
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tf (void *arg)
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{
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/* Ignore all signals. This must not have any effect on delivering
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the cancellation signal. */
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sigset_t ss;
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sigfillset (&ss);
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if (pthread_sigmask (SIG_BLOCK, &ss, NULL) != 0)
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{
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puts ("pthread_sigmask failed");
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exit (1);
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}
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pthread_cleanup_push (cleanup, (void *) 42l);
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int err = pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
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if (err != 0)
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{
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printf ("setcanceltype failed: %s\n", strerror (err));
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exit (1);
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}
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/* The following code is not standard compliant: the mutex functions
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must not be called with asynchronous cancellation enabled. */
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err = pthread_mutex_unlock (&m2);
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if (err != 0)
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{
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printf ("child: mutex_unlock failed: %s\n", strerror (err));
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exit (1);
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}
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err = pthread_mutex_lock (&m1);
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if (err != 0)
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{
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printf ("child: 1st mutex_lock failed: %s\n", strerror (err));
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exit (1);
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}
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/* We should never come here. */
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pthread_cleanup_pop (0);
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return NULL;
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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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int err;
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pthread_t th;
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int result = 0;
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void *retval;
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/* Get the mutexes. */
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err = pthread_mutex_lock (&m1);
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if (err != 0)
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{
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printf ("parent: 1st mutex_lock failed: %s\n", strerror (err));
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return 1;
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}
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err = pthread_mutex_lock (&m2);
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if (err != 0)
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{
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printf ("parent: 2nd mutex_lock failed: %s\n", strerror (err));
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return 1;
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}
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err = pthread_create (&th, NULL, tf, NULL);
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if (err != 0)
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{
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printf ("create failed: %s\n", strerror (err));
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return 1;
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}
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err = pthread_mutex_lock (&m2);
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if (err != 0)
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{
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printf ("parent: 3rd mutex_lock failed: %s\n", strerror (err));
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return 1;
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}
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err = pthread_cancel (th);
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if (err != 0)
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{
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printf ("cancel failed: %s\n", strerror (err));
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return 1;
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}
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err = pthread_join (th, &retval);
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if (err != 0)
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{
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printf ("join failed: %s\n", strerror (err));
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return 1;
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}
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if (retval != PTHREAD_CANCELED)
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{
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printf ("wrong return value: %p\n", retval);
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result = 1;
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}
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if (cntr == 42)
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{
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puts ("cleanup handler called with wrong argument");
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result = 1;
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}
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else if (cntr != 1)
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{
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puts ("cleanup handling not called");
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result = 1;
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}
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return result;
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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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