0N/A/*
3261N/A * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
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0N/A * published by the Free Software Foundation.
0N/A *
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0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
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2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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0N/A */
0N/A
0N/A/*
0N/A * @test
0N/A * @bug 6571733 6460501
0N/A * @summary Check that regaining a read lock succeeds after a write
0N/A * lock attempt times out
0N/A */
0N/Aimport java.util.concurrent.locks.*;
0N/Aimport java.util.concurrent.*;
0N/A
0N/Apublic class Bug6571733 {
0N/A
0N/A void test(String[] args) throws Throwable {
0N/A test(true);
0N/A test(false);
0N/A }
0N/A
0N/A void test(boolean fairness) throws Throwable {
0N/A final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fairness);
0N/A
0N/A // obtain read lock
0N/A lock.readLock().lock();
0N/A
0N/A Thread thread = new Thread() { public void run() {
0N/A try {
3203N/A check(! lock.writeLock().tryLock(0, TimeUnit.DAYS));
0N/A
0N/A lock.readLock().lock();
0N/A lock.readLock().unlock();
0N/A } catch (Throwable t) { unexpected(t); }}};
0N/A
0N/A thread.start();
0N/A thread.join();
0N/A }
0N/A
0N/A //--------------------- Infrastructure ---------------------------
0N/A volatile int passed = 0, failed = 0;
0N/A void pass() {passed++;}
0N/A void fail() {failed++; Thread.dumpStack();}
0N/A void fail(String msg) {System.err.println(msg); fail();}
0N/A void unexpected(Throwable t) {failed++; t.printStackTrace();}
0N/A void check(boolean cond) {if (cond) pass(); else fail();}
0N/A public static void main(String[] args) throws Throwable {
0N/A new Bug6571733().instanceMain(args);}
0N/A void instanceMain(String[] args) throws Throwable {
0N/A try {test(args);} catch (Throwable t) {unexpected(t);}
0N/A System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
0N/A if (failed > 0) throw new AssertionError("Some tests failed");}
0N/A}