All Downloads are FREE. Search and download functionalities are using the official Maven repository.

com.gemstone.gemfire.internal.concurrent.AB Maven / Gradle / Ivy

The newest version!
/*
 * Copyright (c) 2010-2015 Pivotal Software, Inc. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you
 * may not use this file except in compliance with the License. You
 * may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * permissions and limitations under the License. See accompanying
 * LICENSE file.
 */
package com.gemstone.gemfire.internal.concurrent;

/**
 * These methods are the same ones on
 * the JDK 5 version java.util.concurrent.atomic.AtomicBoolean.
 * @see CFactory
 * @author darrel
 * @deprecated used AtomicBoolean instead
 */
public interface AB {
  /**
   * Returns the current value.
   *
   * @return the current value
   */
  public boolean get();

  /**
   * Atomically sets the value to the given updated value
   * if the current value {@code ==} the expected value.
   *
   * @param expect the expected value
   * @param update the new value
   * @return true if successful. False return indicates that
   * the actual value was not equal to the expected value.
   */
  public boolean compareAndSet(boolean expect, boolean update);

  /**
   * Atomically sets the value to the given updated value
   * if the current value {@code ==} the expected value.
   *
   * 

May fail spuriously * and does not provide ordering guarantees, so is only rarely an * appropriate alternative to {@code compareAndSet}. * * @param expect the expected value * @param update the new value * @return true if successful. */ public boolean weakCompareAndSet(boolean expect, boolean update); /** * Unconditionally sets to the given value. * * @param newValue the new value */ public void set(boolean newValue); /** * Atomically sets to the given value and returns the previous value. * * @param newValue the new value * @return the previous value */ public boolean getAndSet(boolean newValue); }





© 2015 - 2024 Weber Informatics LLC | Privacy Policy