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/*
 * Tencent is pleased to support the open source community by making Angel available.
 *
 * Copyright (C) 2017-2018 THL A29 Limited, a Tencent company. All rights reserved.
 *
 * 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
 *
 * https://opensource.org/licenses/Apache-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.tencent.angel.utils;

import java.lang.Thread.UncaughtExceptionHandler;

/**
 * Abstract class which contains a Thread and delegates the common Thread methods to that instance.
 * 
 * The purpose of this class is to workaround Sun JVM bug #6915621, in which something internal to
 * the JDK uses Thread.currentThread() as a monitor lock. This can produce deadlocks like
 * HBASE-4367, HBASE-4101, etc.
 */
public abstract class HasThread implements Runnable {
  private final Thread thread;

  public HasThread() {
    this.thread = new Thread(this);
  }

  public HasThread(String name) {
    this.thread = new Thread(this, name);
  }

  public Thread getThread() {
    return thread;
  }

  public abstract void run();

  // // Begin delegation to Thread

  public final String getName() {
    return thread.getName();
  }

  public void interrupt() {
    thread.interrupt();
  }

  public final boolean isAlive() {
    return thread.isAlive();
  }

  public boolean isInterrupted() {
    return thread.isInterrupted();
  }

  public final void setDaemon(boolean on) {
    thread.setDaemon(on);
  }

  public final void setName(String name) {
    thread.setName(name);
  }

  public final void setPriority(int newPriority) {
    thread.setPriority(newPriority);
  }

  public void setUncaughtExceptionHandler(UncaughtExceptionHandler eh) {
    thread.setUncaughtExceptionHandler(eh);
  }

  public void start() {
    thread.start();
  }

  public final void join() throws InterruptedException {
    thread.join();
  }

  public final void join(long millis, int nanos) throws InterruptedException {
    thread.join(millis, nanos);
  }

  public final void join(long millis) throws InterruptedException {
    thread.join(millis);
  }
  // // End delegation to Thread
}