VisorThreadLockInfo.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.ignite.internal.visor.debug;

import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.lang.management.LockInfo;
import org.apache.ignite.internal.util.typedef.internal.U;
import org.apache.ignite.internal.visor.VisorDataTransferObject;

/**
 * Data transfer object for {@link LockInfo}.
 */
public class VisorThreadLockInfo extends VisorDataTransferObject {
    /** */
    private static final long serialVersionUID = 0L;

    /**
     * Fully qualified name of the class of the lock object.
     */
    protected String clsName;

    /**
     * Identity hash code of the lock object.
     */
    protected Integer identityHashCode;

    /**
     * Default constructor.
     */
    public VisorThreadLockInfo() {
        // No-op.
    }

    /**
     * Create data transfer object for given lock info.
     *
     * @param li Lock info.
     */
    public VisorThreadLockInfo(LockInfo li) {
        assert li != null;

        clsName = li.getClassName();
        identityHashCode = li.getIdentityHashCode();
    }

    /**
     * @return Fully qualified name of the class of the lock object.
     */
    public String getClassName() {
        return clsName;
    }

    /**
     * @return Identity hash code of the lock object.
     */
    public Integer getIdentityHashCode() {
        return identityHashCode;
    }

    /** {@inheritDoc} */
    @Override protected void writeExternalData(ObjectOutput out) throws IOException {
        U.writeString(out, clsName);
        out.writeObject(identityHashCode);
    }

    /** {@inheritDoc} */
    @Override protected void readExternalData(byte protoVer, ObjectInput in) throws IOException, ClassNotFoundException {
        clsName = U.readString(in);
        identityHashCode = (Integer)in.readObject();
    }

    /** {@inheritDoc} */
    @Override public String toString() {
        return clsName + '@' + Integer.toHexString(identityHashCode);
    }
}