115 lines
3.3 KiB
Diff
115 lines
3.3 KiB
Diff
commit bde47662b74b883149c3001e2c052dea5d3cd92f
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Author: Sergey Kolosov <skolosov@redhat.com>
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Date: Wed Nov 6 15:24:06 2024 +0100
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nptl: Add new test for pthread_spin_trylock
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Add a threaded test for pthread_spin_trylock attempting to lock already
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acquired spin lock and checking for correct return code.
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Reviewed-by: Florian Weimer <fweimer@redhat.com>
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Conflicts:
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sysdeps/pthread/Makefile (add new test)
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diff --git a/sysdeps/pthread/Makefile b/sysdeps/pthread/Makefile
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index d99c161c827ef4b8..6355e94171fbcdc3 100644
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--- a/sysdeps/pthread/Makefile
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+++ b/sysdeps/pthread/Makefile
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@@ -127,6 +127,7 @@ tests += tst-cnd-basic tst-mtx-trylock tst-cnd-broadcast \
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tst-pthread_kill-exited \
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tst-pthread_kill-exiting \
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tst-cancel30 \
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+ tst-spin5 \
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# tests
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tests-time64 := \
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diff --git a/sysdeps/pthread/tst-spin5.c b/sysdeps/pthread/tst-spin5.c
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new file mode 100644
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index 0000000000000000..5c23bd48ef27b3ce
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--- /dev/null
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+++ b/sysdeps/pthread/tst-spin5.c
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@@ -0,0 +1,82 @@
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+/* Threaded test the pthread_spin_trylock function.
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+ Copyright (C) 2024 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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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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+
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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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+
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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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+ <https://www.gnu.org/licenses/>. */
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+
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+#include <stdio.h>
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+#include <errno.h>
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+#include <support/check.h>
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+#include <support/support.h>
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+#include <support/xunistd.h>
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+#include <support/xthread.h>
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+
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+pthread_spinlock_t lock;
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+
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+void *
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+thread (void *arg)
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+{
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+ int ret;
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+ int thr_id = *(int *) arg;
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+
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+ ret = pthread_spin_trylock (&lock);
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+ if (thr_id == 1)
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+ /* thread with already acquired lock. */
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+ {
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+ if (ret != EBUSY)
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+ {
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+ FAIL_EXIT1 ("pthread_spin_trylock should fail with EBUSY");
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+ }
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+ }
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+ else if (thr_id == 2)
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+ /* thread with released spin lock. */
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+ {
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+ if (ret != 0)
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+ {
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+ FAIL_EXIT1 ("pthread_spin_trylock should be able to acquire lock");
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+ }
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+ }
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+ return NULL;
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+}
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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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+ pthread_t thr1, thr2;
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+ int ret;
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+ int thr1_id = 1, thr2_id = 2;
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+
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+ pthread_spin_init (&lock, PTHREAD_PROCESS_PRIVATE);
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+ /* lock spin in main thread. */
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+ ret = pthread_spin_trylock (&lock);
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+ if (ret != 0)
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+ {
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+ FAIL_EXIT1 ("Main thread should be able to acquire spin lock");
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+ }
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+
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+ /* create first thread to try locking already acquired spin lock. */
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+ thr1 = xpthread_create (NULL, thread, &thr1_id);
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+ xpthread_join (thr1);
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+
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+ /* release spin lock and create thread to acquire released spin lock. */
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+ pthread_spin_unlock (&lock);
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+ thr2 = xpthread_create (NULL, thread, &thr2_id);
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+ xpthread_join (thr2);
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+
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+ pthread_spin_destroy (&lock);
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+ return 0;
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+}
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+
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+#include <support/test-driver.c>
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