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/* Copyright (C) 2004-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
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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 <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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#define N 10
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#define ROUNDS 1000
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static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
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static pthread_cond_t cond2 = PTHREAD_COND_INITIALIZER;
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static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER;
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static pthread_barrier_t b;
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static int count;
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static void *
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tf (void *p)
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{
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int i;
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for (i = 0; i < ROUNDS; ++i)
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{
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pthread_mutex_lock (&mut;;
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if (++count == N)
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pthread_cond_signal (&cond2);
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#ifdef TIMED
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struct timeval tv;
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gettimeofday (&tv, NULL);
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struct timespec ts;
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/* Wait three seconds. */
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ts.tv_sec = tv.tv_sec + 3;
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ts.tv_nsec = tv.tv_usec * 1000;
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pthread_cond_timedwait (&cond, &mut, &ts);
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#else
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pthread_cond_wait (&cond, &mut;;
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#endif
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pthread_mutex_unlock (&mut;;
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int err = pthread_barrier_wait (&b);
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if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD)
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{
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puts ("child: barrier_wait failed");
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exit (1);
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}
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err = pthread_barrier_wait (&b);
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if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD)
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{
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puts ("child: barrier_wait failed");
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exit (1);
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}
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}
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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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if (pthread_barrier_init (&b, NULL, N + 1) != 0)
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{
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puts ("barrier_init failed");
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return 1;
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}
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pthread_mutex_lock (&mut;;
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int i, j, err;
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pthread_t th[N];
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for (i = 0; i < N; ++i)
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if ((err = pthread_create (&th[i], NULL, tf, NULL)) != 0)
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{
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printf ("cannot create thread %d: %s\n", i, strerror (err));
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return 1;
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}
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for (i = 0; i < ROUNDS; ++i)
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{
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/* Make sure we discard spurious wake-ups. */
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do
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pthread_cond_wait (&cond2, &mut;;
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while (count != N);
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if (i & 1)
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pthread_mutex_unlock (&mut;;
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if (i & 2)
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pthread_cond_broadcast (&cond;;
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else if (i & 4)
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for (j = 0; j < N; ++j)
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pthread_cond_signal (&cond;;
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else
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{
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for (j = 0; j < (i / 8) % N; ++j)
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pthread_cond_signal (&cond;;
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pthread_cond_broadcast (&cond;;
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}
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if ((i & 1) == 0)
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pthread_mutex_unlock (&mut;;
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err = pthread_cond_destroy (&cond;;
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if (err)
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{
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printf ("pthread_cond_destroy failed: %s\n", strerror (err));
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return 1;
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}
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/* Now clobber the cond variable which has been successfully
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destroyed above. */
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memset (&cond, (char) i, sizeof (cond));
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err = pthread_barrier_wait (&b);
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if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD)
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{
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puts ("parent: barrier_wait failed");
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return 1;
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}
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pthread_mutex_lock (&mut;;
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err = pthread_barrier_wait (&b);
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if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD)
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{
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puts ("parent: barrier_wait failed");
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return 1;
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}
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count = 0;
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err = pthread_cond_init (&cond, NULL);
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if (err)
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{
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printf ("pthread_cond_init failed: %s\n", strerror (err));
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return 1;
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}
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}
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for (i = 0; i < N; ++i)
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if ((err = pthread_join (th[i], NULL)) != 0)
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{
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printf ("failed to join thread %d: %s\n", i, strerror (err));
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return 1;
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}
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puts ("done");
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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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