com.sicheng.common.persistence.cache.DummyReadWriteLock Maven / Gradle / Ivy
/**
* 本作品使用 木兰公共许可证,第2版（Mulan PubL v2） 开源协议，请遵守相关条款，或者联系sicheng.net获取商用授权。
* Copyright (c) 2016 SiCheng.Net
* This software is licensed under Mulan PubL v2.
* You can use this software according to the terms and conditions of the Mulan PubL v2.
* You may obtain a copy of Mulan PubL v2 at:
* http://license.coscl.org.cn/MulanPubL-2.0
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
* See the Mulan PubL v2 for more details.
*/
package com.sicheng.common.persistence.cache;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReadWriteLock;
/**
* 标题: 虚假锁
* 描述: 当不需要锁时，请使用本虚假锁，来达到无锁的目的
* 公司: 思程科技 www.sicheng.net
*
* @author zhaolei
* @date 2017年6月25日 上午7:33:38
*/
class DummyReadWriteLock implements ReadWriteLock {
private Lock lock = new DummyLock();
@Override
public Lock readLock() {
return lock;
}
@Override
public Lock writeLock() {
return lock;
}
static class DummyLock implements Lock {
@Override
public void lock() {
// Not implemented
}
@Override
public void lockInterruptibly() throws InterruptedException {
// Not implemented
}
@Override
public boolean tryLock() {
return true;
}
@Override
public boolean tryLock(long paramLong, TimeUnit paramTimeUnit) throws InterruptedException {
return true;
}
@Override
public void unlock() {
// Not implemented
}
@Override
public Condition newCondition() {
return null;
}
}
}