broker-plugins/amqp-0-10-protocol/src/main/java/org/apache/qpid/server/protocol/v0_10/Waiter.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 *
 */
package org.apache.qpid.server.protocol.v0_10;


/**
 * Waiter
 *
 */

public final class Waiter
{

    private final Object lock;
    private final long timeout;
    private final long start;
    private long elapsed;

    public Waiter(Object lock, long timeout)
    {
        this.lock = lock;
        this.timeout = timeout;
        this.start = System.currentTimeMillis();
        this.elapsed = 0;
    }

    public boolean hasTime()
    {
        return elapsed < timeout;
    }

    public void await()
    {
        try
        {
            lock.wait(timeout - elapsed);
        }
        catch (InterruptedException e)
        {
            // pass
        }
        elapsed = System.currentTimeMillis() - start;
    }

}