1 /* 2 * Copyright (C) 2016 The Dagger Authors. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package dagger.functional.producers.monitoring; 18 19 import java.util.Map; 20 import java.util.concurrent.ConcurrentHashMap; 21 import javax.inject.Inject; 22 import javax.inject.Singleton; 23 24 @Singleton 25 final class ThreadAccumulator { 26 private final Map<String, Long> threadIds = new ConcurrentHashMap<>(); 27 28 @Inject ThreadAccumulator()29 ThreadAccumulator() {} 30 markThread(String name)31 void markThread(String name) { 32 threadIds.put(name, Thread.currentThread().getId()); 33 } 34 threadId(String name)35 long threadId(String name) { 36 return threadIds.get(name); 37 } 38 } 39