/******************************************************************************
* 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;
/**
* Litmus test case from
* P. Kohli, G. Neiger and M. Ahamad
* A characterization of sclaable shared memories.
* GUT-CC-93/04, 1993.
*
* <pre>
* Initially, x = y = 0
*
* Thread 1:
* x = 1
*
* Thread 2:
* r1 = x
* y = 1
*
* Thread 3:
* r2 = y
* r3 = x
*
*
* Behavior in question: r1 == 1, r2 == 1, r3 == 0
*
* Decision: Allowed
* </pre>
*
* @author etorlak
*
*/
public final class Test23 {
static int x = 0, y = 0;
public static final void thread1() {
x = 1;
}
public static final void thread2() {
final int r1 = x;
y = 1;
assert r1 == 1;
}
public static final void thread3() {
final int r2 = y;
final int r3 = x;
assert r2 == 1;
assert r3 == 0;
}
}