src/main/java/org/apache/geronimo/jcache/simple/SimpleThreadFactory.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.geronimo.jcache.simple;

import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicInteger;

public class SimpleThreadFactory implements ThreadFactory {

    private static final AtomicInteger POOL_IDX = new AtomicInteger();

    private final AtomicInteger threadIdx = new AtomicInteger();

    private final int poolIdx;

    private final String format;

    public SimpleThreadFactory(final String format) {
        this.format = format;
        this.poolIdx = POOL_IDX.incrementAndGet();
    }

    @Override
    public Thread newThread(final Runnable r) {
        final Thread thread = new Thread(r);
        thread.setName(String.format(format, poolIdx, threadIdx.incrementAndGet()));
        thread.setPriority(Thread.NORM_PRIORITY);
        thread.setDaemon(false); // ensure to call close, that's it
        return thread;
    }
}