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ThreadPool.java
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ThreadPool.java
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/*
* Copyright 2013 Abid Hasan Mujtaba
*
* 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 com.abid_mujtaba.fetchheaders.misc;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
/**
* This implements a ThreadPoolExecutor which accepts generic runnables and executes them concurrently in the specified number of threads.
*/
public class ThreadPool {
static final int INITIAL_THREAD_POOL_COUNT = 3;
static final int MAX_THREAD_POOL_COUNT = 3;
static final int KEEP_ALIVE_TIME = 1;
static final TimeUnit KEEP_ALIVE_TIME_UNIT = TimeUnit.SECONDS;
static ThreadPool sInstance = new ThreadPool(); // Single instance of manager kept and controlled locally
private final BlockingQueue<Runnable> mWorkQueue = new LinkedBlockingQueue<Runnable>();
private ThreadPoolExecutor mThreadPoolExecutor = new ThreadPoolExecutor(INITIAL_THREAD_POOL_COUNT, MAX_THREAD_POOL_COUNT, KEEP_ALIVE_TIME, KEEP_ALIVE_TIME_UNIT, mWorkQueue);
private ThreadPool() {} // Empty and Private default constructor (not accessible from outside).
static public void executeTask(Runnable _runnable)
{
sInstance.mThreadPoolExecutor.execute(_runnable);
}
}