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-rw-r--r--REORG.TODO/nptl/tst-sem14.c92
1 files changed, 92 insertions, 0 deletions
diff --git a/REORG.TODO/nptl/tst-sem14.c b/REORG.TODO/nptl/tst-sem14.c
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+/* Test for sem_post race: bug 14532.
+ Copyright (C) 2012-2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ 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 <semaphore.h>
+#include <stdio.h>
+
+#define NTHREADS 10
+#define NITER 100000
+
+sem_t sem;
+int c;
+volatile int thread_fail;
+
+static void *
+tf (void *arg)
+{
+ for (int i = 0; i < NITER; i++)
+ {
+ if (sem_wait (&sem) != 0)
+ {
+ perror ("sem_wait");
+ thread_fail = 1;
+ }
+ ++c;
+ if (sem_post (&sem) != 0)
+ {
+ perror ("sem_post");
+ thread_fail = 1;
+ }
+ }
+ return NULL;
+}
+
+static int
+do_test (void)
+{
+ if (sem_init (&sem, 0, 0) != 0)
+ {
+ perror ("sem_init");
+ return 1;
+ }
+
+ pthread_t th[NTHREADS];
+ for (int i = 0; i < NTHREADS; i++)
+ {
+ if (pthread_create (&th[i], NULL, tf, NULL) != 0)
+ {
+ puts ("pthread_create failed");
+ return 1;
+ }
+ }
+
+ if (sem_post (&sem) != 0)
+ {
+ perror ("sem_post");
+ return 1;
+ }
+
+ for (int i = 0; i < NTHREADS; i++)
+ if (pthread_join (th[i], NULL) != 0)
+ {
+ puts ("pthread_join failed");
+ return 1;
+ }
+
+ if (c != NTHREADS * NITER)
+ {
+ printf ("c = %d, should be %d\n", c, NTHREADS * NITER);
+ return 1;
+ }
+ return thread_fail;
+}
+
+#define TIMEOUT 10
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"