/*
* Copyright (c) 2007, 2010, 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.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 6464365
* @summary Test state transitions; check protected methods are called
* @author Martin Buchholz
*/
import java.util.*;
import java.util.concurrent.*;
import java.util.concurrent.atomic.*;
public class Customized {
static final AtomicLong doneCount = new AtomicLong(0);
static final AtomicLong setCount = new AtomicLong(0);
static final AtomicLong setExceptionCount = new AtomicLong(0);
static void equal(long expected, AtomicLong actual) {
equal(expected, actual.get());
}
static void equalCounts(long x, long y, long z) {
equal(x, doneCount);
equal(y, setCount);
equal(z, setExceptionCount);
}
static class MyFutureTask<V> extends FutureTask<V> {
MyFutureTask(Runnable r, V result) { super(r, result); }
protected void done() {
doneCount.getAndIncrement();
super.done();
}
protected void set(V v) {
setCount.getAndIncrement();
super.set(v);
}
protected void setException(Throwable t) {
setExceptionCount.getAndIncrement();
super.setException(t);
}
public boolean runAndReset() {
return super.runAndReset();
}
}
static <V> void checkReady(final FutureTask<V> task) {
check(! task.isDone());
check(! task.isCancelled());
THROWS(TimeoutException.class,
new Fun(){void f() throws Throwable {
task.get(0L, TimeUnit.SECONDS); }});
}
static <V> void checkDone(final FutureTask<V> task) {
try {
check(task.isDone());
check(! task.isCancelled());
check(task.get() != null);
} catch (Throwable t) { unexpected(t); }
}
static <V> void checkCancelled(final FutureTask<V> task) {
check(task.isDone());
check(task.isCancelled());
THROWS(CancellationException.class,
new Fun(){void f() throws Throwable {
task.get(0L, TimeUnit.SECONDS); }},
new Fun(){void f() throws Throwable {
task.get(); }});
}
static <V> void checkThrew(final FutureTask<V> task) {
check(task.isDone());
check(! task.isCancelled());
THROWS(ExecutionException.class,
new Fun(){void f() throws Throwable {
task.get(0L, TimeUnit.SECONDS); }},
new Fun(){void f() throws Throwable {
task.get(); }});
}
static <V> void cancel(FutureTask<V> task, boolean mayInterruptIfRunning) {
task.cancel(mayInterruptIfRunning);
checkCancelled(task);
}
static <V> void run(FutureTask<V> task) {
boolean isCancelled = task.isCancelled();
task.run();
check(task.isDone());
equal(isCancelled, task.isCancelled());
}
static void realMain(String[] args) throws Throwable {
final Runnable nop = new Runnable() {
public void run() {}};
final Runnable bad = new Runnable() {
public void run() { throw new Error(); }};
try {
final MyFutureTask<Long> task = new MyFutureTask<Long>(nop, 42L);
checkReady(task);
equalCounts(0,0,0);
check(task.runAndReset());
checkReady(task);
equalCounts(0,0,0);
run(task);
checkDone(task);
equalCounts(1,1,0);
equal(42L, task.get());
run(task);
checkDone(task);
equalCounts(1,1,0);
equal(42L, task.get());
} catch (Throwable t) { unexpected(t); }
try {
final MyFutureTask<Long> task = new MyFutureTask<Long>(nop, 42L);
cancel(task, false);
equalCounts(2,1,0);
cancel(task, false);
equalCounts(2,1,0);
run(task);
equalCounts(2,1,0);
check(! task.runAndReset());
} catch (Throwable t) { unexpected(t); }
try {
final MyFutureTask<Long> task = new MyFutureTask<Long>(bad, 42L);
checkReady(task);
run(task);
checkThrew(task);
equalCounts(3,1,1);
run(task);
equalCounts(3,1,1);
} catch (Throwable t) { unexpected(t); }
try {
final MyFutureTask<Long> task = new MyFutureTask<Long>(nop, 42L);
checkReady(task);
task.set(99L);
checkDone(task);
equalCounts(4,2,1);
run(task);
equalCounts(4,2,1);
task.setException(new Throwable());
checkDone(task);
equalCounts(4,2,2);
} catch (Throwable t) { unexpected(t); }
try {
final MyFutureTask<Long> task = new MyFutureTask<Long>(nop, 42L);
checkReady(task);
task.setException(new Throwable());
checkThrew(task);
equalCounts(5,2,3);
run(task);
equalCounts(5,2,3);
task.set(99L);
checkThrew(task);
equalCounts(5,3,3);
} catch (Throwable t) { unexpected(t); }
System.out.printf("doneCount=%d%n", doneCount.get());
System.out.printf("setCount=%d%n", setCount.get());
System.out.printf("setExceptionCount=%d%n", setExceptionCount.get());
}
//--------------------- 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");}
private abstract static class Fun {abstract void f() throws Throwable;}
static void THROWS(Class<? extends Throwable> k, Fun... fs) {
for (Fun f : fs)
try { f.f(); fail("Expected " + k.getName() + " not thrown"); }
catch (Throwable t) {
if (k.isAssignableFrom(t.getClass())) pass();
else unexpected(t);}}
}