diff options
Diffstat (limited to 'REORG.TODO/nptl/tst-cond20.c')
| -rw-r--r-- | REORG.TODO/nptl/tst-cond20.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/REORG.TODO/nptl/tst-cond20.c b/REORG.TODO/nptl/tst-cond20.c new file mode 100644 index 0000000000..ad9d6c34f3 --- /dev/null +++ b/REORG.TODO/nptl/tst-cond20.c @@ -0,0 +1,172 @@ +/* Copyright (C) 2004-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.com>, 2004. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <pthread.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#define N 10 +#define ROUNDS 1000 +static pthread_cond_t cond = PTHREAD_COND_INITIALIZER; +static pthread_cond_t cond2 = PTHREAD_COND_INITIALIZER; +static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER; +static pthread_barrier_t b; +static int count; + +static void * +tf (void *p) +{ + int i; + for (i = 0; i < ROUNDS; ++i) + { + pthread_mutex_lock (&mut); + + if (++count == N) + pthread_cond_signal (&cond2); + +#ifdef TIMED + struct timeval tv; + gettimeofday (&tv, NULL); + struct timespec ts; + /* Wait three seconds. */ + ts.tv_sec = tv.tv_sec + 3; + ts.tv_nsec = tv.tv_usec * 1000; + pthread_cond_timedwait (&cond, &mut, &ts); +#else + pthread_cond_wait (&cond, &mut); +#endif + + pthread_mutex_unlock (&mut); + + int err = pthread_barrier_wait (&b); + if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD) + { + puts ("child: barrier_wait failed"); + exit (1); + } + + err = pthread_barrier_wait (&b); + if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD) + { + puts ("child: barrier_wait failed"); + exit (1); + } + } + + return NULL; +} + + +static int +do_test (void) +{ + if (pthread_barrier_init (&b, NULL, N + 1) != 0) + { + puts ("barrier_init failed"); + return 1; + } + + pthread_mutex_lock (&mut); + + int i, j, err; + pthread_t th[N]; + for (i = 0; i < N; ++i) + if ((err = pthread_create (&th[i], NULL, tf, NULL)) != 0) + { + printf ("cannot create thread %d: %s\n", i, strerror (err)); + return 1; + } + + for (i = 0; i < ROUNDS; ++i) + { + /* Make sure we discard spurious wake-ups. */ + do + pthread_cond_wait (&cond2, &mut); + while (count != N); + + if (i & 1) + pthread_mutex_unlock (&mut); + + if (i & 2) + pthread_cond_broadcast (&cond); + else if (i & 4) + for (j = 0; j < N; ++j) + pthread_cond_signal (&cond); + else + { + for (j = 0; j < (i / 8) % N; ++j) + pthread_cond_signal (&cond); + pthread_cond_broadcast (&cond); + } + + if ((i & 1) == 0) + pthread_mutex_unlock (&mut); + + err = pthread_cond_destroy (&cond); + if (err) + { + printf ("pthread_cond_destroy failed: %s\n", strerror (err)); + return 1; + } + + /* Now clobber the cond variable which has been successfully + destroyed above. */ + memset (&cond, (char) i, sizeof (cond)); + + err = pthread_barrier_wait (&b); + if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD) + { + puts ("parent: barrier_wait failed"); + return 1; + } + + pthread_mutex_lock (&mut); + + err = pthread_barrier_wait (&b); + if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD) + { + puts ("parent: barrier_wait failed"); + return 1; + } + + count = 0; + err = pthread_cond_init (&cond, NULL); + if (err) + { + printf ("pthread_cond_init failed: %s\n", strerror (err)); + return 1; + } + } + + for (i = 0; i < N; ++i) + if ((err = pthread_join (th[i], NULL)) != 0) + { + printf ("failed to join thread %d: %s\n", i, strerror (err)); + return 1; + } + + puts ("done"); + + return 0; +} + + +#define TEST_FUNCTION do_test () +#include "../test-skeleton.c" |