/*
 * JBoss, Home of Professional Open Source
 * Copyright 2012, Red Hat, Inc., and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * Licensed 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.jboss.weld.executor;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

import org.jboss.weld.logging.BootstrapLogger;

/**
 * Implementation of {@link ExtendedExecutorServices} that uses a fixed thread pool. The size of the underlying thread pool is
 * determined by executing Runtime.getRuntime().availableProcessors() + 1.
 *
 * @author Jozef Hartinger
 *
 */
public class FixedThreadPoolExecutorServices extends AbstractExecutorServices {

    private final int threadPoolSize;

    private final ExecutorService executor;

    public FixedThreadPoolExecutorServices(int threadPoolSize) {
        this.threadPoolSize = threadPoolSize;
        this.executor = Executors.newFixedThreadPool(threadPoolSize, new DaemonThreadFactory(new ThreadGroup(DaemonThreadFactory.WELD_WORKERS), "weld-worker-"));
        BootstrapLogger.LOG.threadsInUse(threadPoolSize);
    }

    @Override
    public ExecutorService getTaskExecutor() {
        return executor;
    }

    @Override
    public int getThreadPoolSize() {
        return threadPoolSize;
    }

    @Override
    public String toString() {
        return "FixedThreadPoolExecutorServices [threadPoolSize=" + threadPoolSize + "]";
    }
}