001 /** 002 * Copyright (C) 2012 FuseSource, Inc. 003 * http://fusesource.com 004 * 005 * Licensed under the Apache License, Version 2.0 (the "License"); 006 * you may not use this file except in compliance with the License. 007 * You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 018 package org.fusesource.hawtdispatch.example; 019 020 import org.fusesource.hawtdispatch.*; 021 022 import java.util.concurrent.CountDownLatch; 023 import java.util.concurrent.Semaphore; 024 025 import static org.fusesource.hawtdispatch.Dispatch.*; 026 027 /** 028 * <p> 029 * </p> 030 * 031 * @author <a href="http://hiramchirino.com">Hiram Chirino</a> 032 */ 033 public class CustomDispatchSourceJava { 034 public static void main(String[] args) throws Exception { 035 run(); 036 } 037 038 public static void run() throws Exception { 039 final Semaphore done = new Semaphore(1-(1000*1000)); 040 041 DispatchQueue queue = createQueue(); 042 final CustomDispatchSource<Integer, Integer> source = createSource(EventAggregators.INTEGER_ADD, queue); 043 source.setEventHandler(new Task() { 044 public void run() { 045 int count = source.getData(); 046 System.out.println("got: " + count); 047 done.release(count); 048 } 049 }); 050 source.resume(); 051 052 // Produce 1,000,000 concurrent merge events 053 for (int i = 0; i < 1000; i++) { 054 getGlobalQueue().execute(new Task() { 055 public void run() { 056 for (int j = 0; j < 1000; j++) { 057 source.merge(1); 058 } 059 } 060 }); 061 } 062 063 // Wait for all the event to arrive. 064 done.acquire(); 065 } 066 }