/*
 * The MIT License (MIT)
 * 
 * Copyright (c) 2013 Jeff Nelson, Cinchapi Software Collective
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package org.cinchapi.concourse.server.concurrent;

import java.util.concurrent.locks.Lock;

import org.cinchapi.concourse.server.io.Token;

/**
 * Lock related utility methods.
 * 
 * @author jnelson
 */
public class Locks {

	/**
	 * Return the {@link TLock} that is found to be associated with
	 * {@code token}.
	 * 
	 * @param token
	 * @return the TokenLock
	 */
	public static TLock get(Token token) {
		return TLock.forToken(token);
	}

	/**
	 * Call {@link Lock#lock()} if and only if {@code condition} is {@code true}
	 * 
	 * @param lock
	 * @param condition
	 */
	public static void lockIfCondition(Lock lock, boolean condition) {
		if(condition) {
			lock.lock();
		}
	}

	/**
	 * Call {@link Lock#unlock()} if and only if {@code condition} is
	 * {@code true}. This method DOES NOT check to see if the lock is actually
	 * held.
	 * 
	 * @param lock
	 * @param condition
	 */
	public static void unlockIfCondition(Lock lock, boolean condition) {
		if(condition) {
			lock.unlock();
		}
	}

}

/*
 * The MIT License (MIT)
 * 
 * Copyright (c) 2013 Jeff Nelson, Cinchapi Software Collective
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package org.cinchapi.concourse.server.concurrent;

import java.util.concurrent.locks.Lock;

import org.cinchapi.concourse.server.io.Token;

/**
 * Lock related utility methods.
 * 
 * @author jnelson
 */
public class Locks {

	/**
	 * Call {@link Lock#lock()} if and only if {@code condition} is {@code true}
	 * 
	 * @param lock
	 * @param condition
	 */
	public static void lockIfCondition(Lock lock, boolean condition) {
		if(condition) {
			lock.lock();
		}
	}

	/**
	 * Call {@link Lock#unlock()} if and only if {@code condition} is
	 * {@code true}. This method DOES NOT check to see if the lock is actually
	 * held.
	 * 
	 * @param lock
	 * @param condition
	 */
	public static void unlockIfCondition(Lock lock, boolean condition) {
		if(condition) {
			lock.unlock();
		}
	}

}

remove get method since the caching happens in TLock, we can just call TLock directly to get the lock we want