/*******************************************************************************
* Copyright (c) 2006, 2012 QNX Software Systems and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* QNX - Initial API and implementation
* Markus Schorn (Wind River Systems)
* Symbian - Repeatedly index classTests test project to detect a particular race condition
* Marc-Andre Laperle
*******************************************************************************/
package org.eclipse.cdt.internal.pdom.tests;
import java.util.regex.Pattern;
import junit.framework.Test;
import org.eclipse.cdt.core.dom.ast.IBinding;
import org.eclipse.cdt.core.index.IndexFilter;
import org.eclipse.cdt.core.model.ICProject;
import org.eclipse.cdt.internal.core.CCoreInternals;
import org.eclipse.cdt.internal.core.pdom.PDOM;
import org.eclipse.core.runtime.NullProgressMonitor;
/**
* Test case for a race condition from Bugzilla#157992
*/
public class RaceCondition157992Test extends PDOMTestBase {
public static Test suite() {
return suite(RaceCondition157992Test.class);
}
public void testRepeatedly() throws Exception {
int successes = 0, noTrials = 100;
for(int i=0; i<noTrials; i++) {
ICProject project = createProject("classTests");
PDOM pdom = (PDOM)CCoreInternals.getPDOMManager().getPDOM(project);
pdom.acquireReadLock();
IBinding[] Bs = pdom.findBindings(Pattern.compile("B"), true, IndexFilter.ALL, new NullProgressMonitor());
if(Bs.length==1)
successes++;
pdom.releaseReadLock();
}
String msg = "Same indexer on same project produces different results."
+ "Failure rate of "+(noTrials-successes)+" failures in "+noTrials+" tests";
assertTrue("Non-race-condition failure", successes!=0);
assertTrue(msg, successes == noTrials);
}
}