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Diffstat (limited to 'test/nptl/tst-cond3.c')
-rw-r--r-- | test/nptl/tst-cond3.c | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/test/nptl/tst-cond3.c b/test/nptl/tst-cond3.c new file mode 100644 index 000000000..cb9eb8558 --- /dev/null +++ b/test/nptl/tst-cond3.c @@ -0,0 +1,113 @@ +/* Copyright (C) 2002 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. + + 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 <string.h> +#include <unistd.h> + + +/* Note that this test requires more than the standard. It is + required that there are no spurious wakeups if only more readers + are added. This is a reasonable demand. */ + + +static pthread_cond_t cond = PTHREAD_COND_INITIALIZER; +static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER; + + +#define N 10 + + +static void * +tf (void *arg) +{ + int i = (long int) arg; + int err; + + /* Get the mutex. */ + err = pthread_mutex_lock (&mut); + if (err != 0) + { + printf ("child %d mutex_lock failed: %s\n", i, strerror (err)); + exit (1); + } + + /* This call should never return. */ + pthread_cond_wait (&cond, &mut); + + /* We should never get here. */ + exit (1); + + return NULL; +} + + +static int +do_test (void) +{ + int err; + int i; + + for (i = 0; i < N; ++i) + { + pthread_t th; + + if (i != 0) + { + /* Release the mutex. */ + err = pthread_mutex_unlock (&mut); + if (err != 0) + { + printf ("mutex_unlock %d failed: %s\n", i, strerror (err)); + return 1; + } + } + + err = pthread_create (&th, NULL, tf, (void *) (long int) i); + if (err != 0) + { + printf ("create %d failed: %s\n", i, strerror (err)); + return 1; + } + + /* Get the mutex. */ + err = pthread_mutex_lock (&mut); + if (err != 0) + { + printf ("mutex_lock %d failed: %s\n", i, strerror (err)); + return 1; + } + } + + /* Set an alarm for 1 second. The wrapper will expect this. */ + alarm (1); + + /* This call should never return. */ + pthread_cond_wait (&cond, &mut); + + puts ("cond_wait returned"); + return 1; +} + + +#define EXPECTED_SIGNAL SIGALRM +#define TEST_FUNCTION do_test () +#include "../test-skeleton.c" |