/******************************************************************************
* Copyright (c) 2009 - 2015 IBM Corporation.
* 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:
* IBM Corporation - initial API and implementation
*****************************************************************************/
/**
*
*/
package data.causality;
/**
* A causality test case from a reviewer.
*
* <pre>
* Initially, x = y = z = 0
*
* Thread 1
* r1 = x
* if (r1 == 0)
* r2 = x
* r3 = z
* y = r3
* else
* r2 = 0
* r3 = z
* y = 1
*
* Thread 2
* x = 1
* r4 = y
* z = r4
*
* Behavior in question: r1 == 0, r2 == r3 == r4 == 1
*
* Decision: Allowed.
* </pre>
*
* @author etorlak
*/
public class Test26 {
static int x = 0, y = 0, z = 0;
public static final void thread1() {
final int r1, r2, r3;
r1 = x;
if (r1==0) {
r2 = x;
r3 = z;
y = r3;
} else {
r2 = 0;
r3 = z;
y = 1;
}
assert r1==0 && r2==1 && r3==1;
}
public static final void thread2() {
x = 1;
final int r4 = y;
z = r4;
assert r4==1;
}
}