76 lines
2.6 KiB
Java
76 lines
2.6 KiB
Java
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/*
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* The MIT License
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* Copyright © 2014-2021 Ilkka Seppälä
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package com.iluwatar.activeobject;
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import java.util.ArrayList;
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import java.util.List;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* The Active Object pattern helps to solve synchronization difficulties without using
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* 'synchronized' methods. The active object will contain a thread-safe data structure
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* (such as BlockingQueue) and use to synchronize method calls by moving the logic of the method
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* into an invocator(usually a Runnable) and store it in the DSA.
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*
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* <p>In this example, we fire 20 threads to modify a value in the target class.
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*/
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public class App implements Runnable {
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private static final Logger logger = LoggerFactory.getLogger(App.class.getName());
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private static final int NUM_CREATURES = 3;
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/**
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* Program entry point.
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*
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* @param args command line arguments.
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*/
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public static void main(String[] args) {
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var app = new App();
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app.run();
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}
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@Override
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public void run() {
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List<ActiveCreature> creatures = new ArrayList<>();
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try {
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for (int i = 0;i < NUM_CREATURES;i++) {
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creatures.add(new Orc(Orc.class.getSimpleName() + i));
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creatures.get(i).eat();
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creatures.get(i).roam();
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}
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Thread.sleep(1000);
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} catch (InterruptedException e) {
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logger.error(e.getMessage());
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Thread.currentThread().interrupt();
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} finally {
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for (int i = 0;i < NUM_CREATURES;i++) {
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creatures.get(i).kill(0);
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}
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}
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}
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}
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