diff options
Diffstat (limited to 'nptl/tst-once4.c')
| -rw-r--r-- | nptl/tst-once4.c | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/nptl/tst-once4.c b/nptl/tst-once4.c new file mode 100644 index 0000000000..be83b54692 --- /dev/null +++ b/nptl/tst-once4.c @@ -0,0 +1,182 @@ +/* Copyright (C) 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@redhat.com>, 2003. + + 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <pthread.h> +#include <stdio.h> +#include <stdlib.h> +#include <time.h> +#include <unistd.h> + + +#define N 100 + +static pthread_once_t once = PTHREAD_ONCE_INIT; + +static pthread_cond_t cond = PTHREAD_COND_INITIALIZER; +static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER; + +static pthread_barrier_t bar; + +static int global; + +static void +once_handler1 (void) +{ + if (pthread_mutex_lock (&mut) != 0) + { + puts ("once_handler1: mutex_lock failed"); + exit (1); + } + + int r = pthread_barrier_wait (&bar); + if (r != 0 && r!= PTHREAD_BARRIER_SERIAL_THREAD) + { + puts ("once_handler1: barrier_wait failed"); + exit (1); + } + + pthread_cond_wait (&cond, &mut); + + /* We should never get here. */ +} + + +static void +once_handler2 (void) +{ + global = 1; +} + + +static void * +tf1 (void *arg) +{ + pthread_once (&once, once_handler1); + + /* We should never get here. */ + puts ("pthread_once in tf returned"); + exit (1); +} + + +static void * +tf2 (void *arg) +{ + int r = pthread_barrier_wait (&bar); + if (r != 0 && r!= PTHREAD_BARRIER_SERIAL_THREAD) + { + puts ("once_handler2: barrier_wait failed"); + exit (1); + } + + pthread_once (&once, once_handler2); + + return NULL; +} + + +static int +do_test (void) +{ + pthread_t th[2]; + + if (pthread_barrier_init (&bar, NULL, 2) != 0) + { + puts ("barrier_init failed"); + exit (1); + } + + if (pthread_create (&th[0], NULL, tf1, NULL) != 0) + { + puts ("first create failed"); + exit (1); + } + + int r = pthread_barrier_wait (&bar); + if (r != 0 && r!= PTHREAD_BARRIER_SERIAL_THREAD) + { + puts ("first barrier_wait failed"); + exit (1); + } + + if (pthread_mutex_lock (&mut) != 0) + { + puts ("mutex_lock failed"); + exit (1); + } + /* We unlock the mutex so that we catch the case where the pthread_cond_wait + call incorrectly resumes and tries to get the mutex. */ + if (pthread_mutex_unlock (&mut) != 0) + { + puts ("mutex_unlock failed"); + exit (1); + } + + if (pthread_create (&th[1], NULL, tf2, NULL) != 0) + { + puts ("second create failed"); + exit (1); + } + + r = pthread_barrier_wait (&bar); + if (r != 0 && r!= PTHREAD_BARRIER_SERIAL_THREAD) + { + puts ("second barrier_wait failed"); + exit (1); + } + + /* Give the second thread a chance to reach the pthread_once call. */ + sleep (2); + + /* Cancel the thread. */ + if (pthread_cancel (th[0]) != 0) + { + puts ("cancel failed"); + exit (1); + } + + void *result; + pthread_join (th[0], &result); + if (result != PTHREAD_CANCELED) + { + puts ("first join didn't return PTHREAD_CANCELED"); + exit (1); + } + + puts ("joined first thread"); + + pthread_join (th[1], &result); + if (result != NULL) + { + puts ("second join didn't return PTHREAD_CANCELED"); + exit (1); + } + + if (global != 1) + { + puts ("global still 0"); + exit (1); + } + + return 0; +} + +#define TEST_FUNCTION do_test () +#define TIMEOUT 4 +#include "../test-skeleton.c" |