/*
* This file is part of the Jikes RVM project (http://jikesrvm.org).
*
* This file is licensed to You under the Eclipse Public License (EPL);
* You may not use this file except in compliance with the License. You
* may obtain a copy of the License at
*
* http://www.opensource.org/licenses/eclipse-1.0.php
*
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership.
*/
package org.mmtk.vm;
import org.vmmagic.pragma.Uninterruptible;
/**
* Simple, fair locks with deadlock detection.
*/
@Uninterruptible public abstract class Lock {
/**
* Set the name of this lock instance
*
* @param str The name of the lock (for error output).
*/
public abstract void setName(String str);
/**
* Try to acquire a lock and spin-wait until acquired.
*/
public abstract void acquire();
/**
* Perform sanity checks on the lock. For debugging.
*
* @param w Identifies the code location in the debugging output.
*/
public abstract void check(int w);
/**
* Release the lock by incrementing serving counter.
*/
public abstract void release();
}