/*
* Copyright (c) 2015, 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
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* 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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package com.oracle.truffle.api.test;
import static org.junit.Assert.assertEquals;
import org.junit.Test;
import com.oracle.truffle.api.Assumption;
import com.oracle.truffle.api.CallTarget;
import com.oracle.truffle.api.Truffle;
import com.oracle.truffle.api.TruffleRuntime;
import com.oracle.truffle.api.frame.VirtualFrame;
import com.oracle.truffle.api.nodes.Node;
import com.oracle.truffle.api.nodes.RootNode;
/**
* Test that Assumption invalidation is propagated to other threads.
*/
public class AssumptionInvalidationTest {
@Test
public void test() throws InterruptedException {
TruffleRuntime runtime = Truffle.getRuntime();
Assumption assumption = runtime.createAssumption("propagated assumption invalidation");
CountingNode countingNode = new CountingNode(assumption);
TestRootNode countingRootNode = new TestRootNode(countingNode);
final CallTarget countingTarget = runtime.createCallTarget(countingRootNode);
Thread thread = new Thread(new Runnable() {
public void run() {
countingTarget.call();
}
});
thread.start();
// Give a chance for CountingNode.execute to OSR compile
Thread.sleep(100);
assumption.invalidate();
thread.join(100);
assertEquals("Thread ought to be notified of invalidation in reasonable time.", false, thread.isAlive());
}
static class TestRootNode extends RootNode {
@Child private ValueNode child;
TestRootNode(ValueNode child) {
super(null);
this.child = child;
}
@Override
public Object execute(VirtualFrame frame) {
return child.execute(frame);
}
}
abstract static class ValueNode extends Node {
abstract long execute(VirtualFrame frame);
}
static class CountingNode extends ValueNode {
long count = 0;
final Assumption assumption;
CountingNode(Assumption assumption) {
this.assumption = assumption;
}
@Override
long execute(VirtualFrame frame) {
while (assumption.isValid()) {
count++;
}
return count;
}
}
}