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/* Copyright (C) 2003-2018 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>, 2003.
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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 <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 <unistd.h>
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#include <sys/mman.h>
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#include <sys/wait.h>
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static pthread_barrier_t b2;
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static int fd;
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static int called;
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static void
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cl (void *arg)
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{
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called = 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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int r = pthread_barrier_wait (&b2;;
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if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
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{
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puts ("child thread: barrier_wait failed");
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exit (1);
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}
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pthread_cleanup_push (cl, NULL);
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/* This call should never return. */
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(void) lockf (fd, F_LOCK, 0);
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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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char fname[] = "/tmp/cancel16XXXXXX";
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fd = mkstemp (fname);
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if (fd == -1)
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{
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puts ("mkstemp failed");
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return 1;
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}
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unlink (fname);
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char mem[sizeof (pthread_barrier_t)];
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memset (mem, '\0', sizeof (mem));
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if (TEMP_FAILURE_RETRY (pwrite (fd, mem, sizeof (mem), 0)) != sizeof (mem))
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{
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puts ("pwrite failed");
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return 1;
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}
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void *p = mmap (NULL, sizeof (mem), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
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if (p == MAP_FAILED)
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{
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puts ("mmap failed");
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return 1;
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}
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pthread_barrier_t *b = (pthread_barrier_t *) p;
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pthread_barrierattr_t ba;
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if (pthread_barrierattr_init (&ba) != 0)
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{
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puts ("barrierattr_init failed");
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return 1;
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}
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if (pthread_barrierattr_setpshared (&ba, 1) != 0)
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{
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puts ("barrierattr_setshared failed");
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return 1;
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}
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if (pthread_barrier_init (b, &ba, 2) != 0)
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{
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puts ("1st barrier_init failed");
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return 1;
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}
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if (pthread_barrierattr_destroy (&ba) != 0)
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{
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puts ("barrier_destroy failed");
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return 1;
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}
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pid_t pid = fork ();
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if (pid == 0)
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{
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/* Child. Lock the file and wait. */
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if (lockf (fd, F_LOCK, 0) != 0)
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{
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puts ("child process: lockf failed");
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_exit (1);
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}
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int r = pthread_barrier_wait (b);
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if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
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{
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puts ("child process: 1st barrier_wait failed");
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_exit (1);
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}
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/* Make sure the process dies. */
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alarm (5);
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r = pthread_barrier_wait (b);
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if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
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{
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puts ("child process: 2nd barrier_wait failed");
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_exit (1);
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}
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_exit (0);
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}
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if (pid == -1)
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{
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puts ("fork failed");
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return 1;
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}
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int r = pthread_barrier_wait (b);
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if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
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{
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puts ("main: 1st barrier_wait failed");
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_exit (1);
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}
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if (pthread_barrier_init (&b2, NULL, 2) != 0)
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{
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puts ("2nd barrier_init failed");
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return 1;
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}
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pthread_t th;
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if (pthread_create (&th, NULL, tf, NULL) != 0)
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{
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puts ("create failed");
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return 1;
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}
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r = pthread_barrier_wait (&b2;;
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if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
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{
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puts ("main: 2nd barrier_wait failed");
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return 1;
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}
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/* Delay. */
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sleep (1);
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if (pthread_cancel (th) != 0)
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{
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puts ("cancel failed");
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return 1;
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}
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void *result;
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if (pthread_join (th, &result) != 0)
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{
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puts ("join failed");
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return 1;
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}
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if (result != PTHREAD_CANCELED)
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{
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puts ("thread not canceled");
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return 1;
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}
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if (called == 0)
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{
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puts ("cleanup handler not called");
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return 1;
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}
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r = pthread_barrier_wait (b);
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if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
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{
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puts ("main: 3rd barrier_wait failed");
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return 1;
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}
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int status;
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if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid)
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{
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puts ("waitpid failed");
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return 1;
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}
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if (WEXITSTATUS (status) != 0)
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{
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printf ("child process exits with %d\n", WEXITSTATUS (status));
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return 1;
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}
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if (lockf (fd, F_LOCK, 0) != 0)
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{
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puts ("main: lockf failed");
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return 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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