| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 |
| * |
| * http://www.apache.org/licenses/LICENSE-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 org.apache.felix.dm.itest.api; |
| |
| import java.util.concurrent.TimeUnit; |
| import java.util.stream.IntStream; |
| |
| import org.apache.felix.dm.Component; |
| import org.apache.felix.dm.DependencyManager; |
| import org.apache.felix.dm.itest.util.Ensure; |
| import org.junit.Assert; |
| |
| /** |
| * Verifies the following scenario: |
| * |
| * - DM concurrent mode is used (a threadpool is used to activate components) |
| * - A depends on M |
| * - M depends on X |
| * - A, M, X are started concurrently |
| * - X is removed. at this point, A should be called in A.unbind(M) while M is still active |
| * and M should be called in M.unbind(X) while X is still active, |
| */ |
| public class FELIX5471_SynchronousUnbindTest extends ServiceRaceTest { |
| |
| volatile Ensure m_ensure; |
| |
| public FELIX5471_SynchronousUnbindTest() { |
| setParallel(); // Configure DM to use a threadpool |
| } |
| |
| public void testSynchronousUnbind() { |
| DependencyManager dm = getDM(); |
| |
| IntStream.range(0, 1000).forEach(i -> { |
| m_ensure = new Ensure(false); |
| |
| Component a = dm.createComponent() |
| .setImplementation(new A()) |
| .add(dm.createServiceDependency().setService(M.class).setRequired(true).setCallbacks("add", "remove")); |
| |
| Component m = dm.createComponent() |
| .setImplementation(new M()) |
| .setInterface(M.class.getName(), null) |
| .add(dm.createServiceDependency().setService(X.class).setRequired(true).setCallbacks("add", "remove")); |
| |
| Component x = dm.createComponent() |
| .setImplementation(new X()) |
| .setInterface(X.class.getName(), null); |
| |
| dm.add(a); |
| dm.add(m); |
| dm.add(x); |
| m_ensure.waitForStep(3, 5000); |
| |
| // make sure the threadpool is quiescent |
| super.m_threadPool.awaitQuiescence(5000, TimeUnit.MILLISECONDS); |
| |
| dm.remove(x); |
| m_ensure.waitForStep(6, 5000); |
| |
| dm.remove(a); |
| dm.remove(m); |
| |
| // make sure the threadpool is quiescent |
| super.m_threadPool.awaitQuiescence(5000, TimeUnit.MILLISECONDS); |
| |
| if ((i + 1) % 100 == 0) { |
| warn("Performed 100 tests (total=%d).", (i + 1)); |
| } |
| |
| }); |
| } |
| |
| public class A { |
| void add(M m) { |
| Assert.assertTrue("A.add(M): M is not started", m.isStarted()); |
| m_ensure.step(3); |
| } |
| |
| void remove(M m) { |
| Assert.assertTrue("A.remove(M): M is not started", m.isStarted()); |
| m_ensure.step(4); |
| } |
| } |
| |
| public class M { |
| volatile boolean m_started; |
| |
| boolean isStarted() { |
| return m_started; |
| } |
| |
| void start() { |
| m_started = true; |
| m_ensure.step(2); |
| } |
| |
| void stop() { |
| m_started = false; |
| } |
| |
| void add(X x) { |
| Assert.assertTrue("M.add(X): X is not started", x.isStarted()); |
| } |
| |
| void remove(X x) { |
| Assert.assertTrue("M.add(X): X is not started", x.isStarted()); |
| m_ensure.step(5); |
| } |
| |
| public String toString() { |
| return "M (" + (m_started ? "started" : "stopped") + ")"; |
| } |
| } |
| |
| public class X { |
| volatile boolean m_started; |
| |
| boolean isStarted() { |
| return m_started; |
| } |
| |
| void start() { |
| m_started = true; |
| m_ensure.step(1); |
| } |
| |
| void stop() { |
| m_started = false; |
| m_ensure.step(6); |
| } |
| |
| public String toString() { |
| return "X (" + (m_started ? "started" : "stopped") + ")"; |
| } |
| } |
| |
| } |