/*
* Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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*/
/*
* @test
* @bug 7132378
* @summary Race in FutureTask if used with explicit set ( not Runnable )
* @author Chris Hegarty
*/
import java.util.concurrent.Callable;
import java.util.concurrent.FutureTask;
public class ExplicitSet {
static void realMain(String[] args) throws Throwable {
for (int i = 1; i <= 10000; i++) {
//System.out.print(".");
test();
}
}
static void test() throws Throwable {
final SettableTask task = new SettableTask();
Thread thread = new Thread() { public void run() {
try {
check(task.get() != null);
} catch (Exception e) { unexpected(e); }
}};
thread.start();
task.set(Boolean.TRUE);
thread.join(5000);
}
static class SettableTask extends FutureTask<Boolean> {
SettableTask() {
super(new Callable<Boolean>() {
public Boolean call() {
fail ("The task should never be run!");
return null;
};
});
}
@Override
public void set(Boolean b) {
super.set(b);
}
}
//--------------------- Infrastructure ---------------------------
static volatile int passed = 0, failed = 0;
static void pass() {passed++;}
static void fail() {failed++; Thread.dumpStack();}
static void fail(String msg) {System.out.println(msg); fail();}
static void unexpected(Throwable t) {failed++; t.printStackTrace();}
static void check(boolean cond) {if (cond) pass(); else fail();}
static void equal(Object x, Object y) {
if (x == null ? y == null : x.equals(y)) pass();
else fail(x + " not equal to " + y);}
public static void main(String[] args) throws Throwable {
try {realMain(args);} catch (Throwable t) {unexpected(t);}
System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
if (failed > 0) throw new AssertionError("Some tests failed");}
}