threaddump/src/main/java/org/apache/felix/threaddump/internal/jdk5/ThreadStateConverter.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.felix.threaddump.internal.jdk5;

import java.util.HashMap;
import java.util.Map;

import org.apache.felix.threaddump.internal.ThreadWriter;

/**
 *
 */
public final class ThreadStateConverter
{

    private static final ThreadStateConverter INSTANCE = new ThreadStateConverter();

    private final Map statuses = new HashMap();

    private ThreadStateConverter()
    {
        register(Thread.State.NEW, ThreadWriter.NEW);
        register(Thread.State.RUNNABLE, ThreadWriter.RUNNABLE);
        register(Thread.State.BLOCKED, ThreadWriter.BLOCKED);
        register(Thread.State.WAITING, ThreadWriter.WAITING);
        register(Thread.State.TIMED_WAITING, ThreadWriter.TIMED_WAITING);
        register(Thread.State.TERMINATED, ThreadWriter.TERMINATED);
    }

    private void register(Thread.State state, short status)
    {
        statuses.put(state, Short.valueOf(status));
    }

    private short getStatus(Thread.State state)
    {
        return ((Short) statuses.get(state)).shortValue();
    }

    public static short toStatus(Thread.State state)
    {
        return INSTANCE.getStatus(state);
    }

}