activemq-broker/src/main/java/org/apache/activemq/broker/region/PendingMarshalUsageTracker.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.activemq.broker.region;

import org.apache.activemq.command.Message;
import org.apache.activemq.usage.MemoryUsage;

public class PendingMarshalUsageTracker implements Runnable {
    final MemoryUsage usage;
    int messageSize;
    public PendingMarshalUsageTracker(final Message message) {
        usage = message.getMemoryUsage();
        if (usage != null) {
            messageSize = message.getSize();
            usage.increaseUsage(messageSize);
        }
    }

    @Override
    public void run() {
        if (usage != null) {
            usage.decreaseUsage(messageSize);
        }
    }
}