ProcessWrapper.java

/*
 * Copyright (c) 2010 SimpleServer authors (see CONTRIBUTORS)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package simpleserver.minecraft;

public class ProcessWrapper implements Wrapper {
  private final Process process;
  private final MessageHandler messageHandler;
  private final Wrapper wrapper;

  private volatile boolean run = true;

  public ProcessWrapper(Process process, MessageHandler messageHandler) {
    this.process = process;
    this.messageHandler = messageHandler;

    wrapper = new Wrapper();
    wrapper.start();
    wrapper.setName("MinecraftProcessWrapper");
  }

  public void stop() {
    run = false;
    wrapper.interrupt();
  }

  public void join() throws InterruptedException {
    wrapper.join();
  }

  private final class Wrapper extends Thread {
    @Override
    public void run() {
      try {
        while (run) {
          try {
            process.waitFor();
            return;
          } catch (InterruptedException e) {
          }
        }

        long time = System.currentTimeMillis();
        while (System.currentTimeMillis() - time < 15000) {
          try {
            process.exitValue();
            return;
          } catch (IllegalThreadStateException e) {
          }
        }

        process.destroy();
      } finally {
        messageHandler.handleQuit();
      }
    }
  }
}