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-rw-r--r--nptl/tst-rwlock15.c116
1 files changed, 0 insertions, 116 deletions
diff --git a/nptl/tst-rwlock15.c b/nptl/tst-rwlock15.c
deleted file mode 100644
index 78225fea27..0000000000
--- a/nptl/tst-rwlock15.c
+++ /dev/null
@@ -1,116 +0,0 @@
-/* Copyright (C) 2015-2017 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/>. */
-
-/* This tests that a writer that is preferred -- but times out due to a
- reader being present -- does not miss to wake other readers blocked on the
- writer's pending lock acquisition. */
-
-#include <errno.h>
-#include <pthread.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <time.h>
-
-/* The bug existed in the code that strictly prefers writers over readers. */
-static pthread_rwlock_t r = PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP;
-
-static void *
-writer (void *arg)
-{
- struct timespec ts;
- if (clock_gettime (CLOCK_REALTIME, &ts) != 0)
- {
- puts ("clock_gettime failed");
- exit (EXIT_FAILURE);
- }
- ts.tv_sec += 1;
- int e = pthread_rwlock_timedwrlock (&r, &ts);
- if (e != ETIMEDOUT)
- {
- puts ("timedwrlock did not time out");
- exit (EXIT_FAILURE);
- }
- return NULL;
-}
-
-static void *
-reader (void *arg)
-{
- /* This isn't a reliable way to get the interleaving we need (because a
- failed trylock doesn't synchronize with the writer, and because we could
- try to lock after the writer has already timed out). However, both will
- just lead to false positives. */
- int e;
- while ((e = pthread_rwlock_tryrdlock (&r)) != EBUSY)
- {
- if (e != 0)
- exit (EXIT_FAILURE);
- pthread_rwlock_unlock (&r);
- }
- e = pthread_rwlock_rdlock (&r);
- if (e != 0)
- {
- puts ("reader rdlock failed");
- exit (EXIT_FAILURE);
- }
- pthread_rwlock_unlock (&r);
- return NULL;
-}
-
-
-static int
-do_test (void)
-{
- /* Grab a rdlock, then create a writer and a reader, and wait until they
- finished. */
-
- if (pthread_rwlock_rdlock (&r) != 0)
- {
- puts ("initial rdlock failed");
- return 1;
- }
-
- pthread_t thw;
- if (pthread_create (&thw, NULL, writer, NULL) != 0)
- {
- puts ("create failed");
- return 1;
- }
- pthread_t thr;
- if (pthread_create (&thr, NULL, reader, NULL) != 0)
- {
- puts ("create failed");
- return 1;
- }
-
- if (pthread_join (thw, NULL) != 0)
- {
- puts ("writer join failed");
- return 1;
- }
- if (pthread_join (thr, NULL) != 0)
- {
- puts ("reader join failed");
- return 1;
- }
-
- return 0;
-}
-
-
-#define TEST_FUNCTION do_test ()
-#include "../test-skeleton.c"