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/*
* 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.geode.internal.offheap;
import static org.junit.Assert.assertEquals;
import java.util.ArrayList;
import java.util.List;
import org.junit.After;
import org.junit.Rule;
import org.junit.Test;
import org.junit.contrib.java.lang.system.RestoreSystemProperties;
/**
* Tests LifecycleListener
*/
public class LifecycleListenerJUnitTest {
private final List<LifecycleListenerCallback> afterCreateCallbacks =
new ArrayList<>();
private final List<LifecycleListenerCallback> afterReuseCallbacks =
new ArrayList<>();
private final List<LifecycleListenerCallback> beforeCloseCallbacks =
new ArrayList<>();
private final TestLifecycleListener listener = new TestLifecycleListener(
afterCreateCallbacks, afterReuseCallbacks, beforeCloseCallbacks);
@Rule
public final RestoreSystemProperties restoreSystemProperties = new RestoreSystemProperties();
@After
public void tearDown() throws Exception {
LifecycleListener.removeLifecycleListener(listener);
afterCreateCallbacks.clear();
afterReuseCallbacks.clear();
beforeCloseCallbacks.clear();
MemoryAllocatorImpl.freeOffHeapMemory();
}
@Test
public void testAddRemoveListener() {
LifecycleListener.addLifecycleListener(listener);
LifecycleListener.removeLifecycleListener(listener);
SlabImpl slab = new SlabImpl(1024); // 1k
MemoryAllocatorImpl ma = MemoryAllocatorImpl.createForUnitTest(
new NullOutOfOffHeapMemoryListener(), new NullOffHeapMemoryStats(), new SlabImpl[] {slab});
assertEquals(0, afterCreateCallbacks.size());
assertEquals(0, afterReuseCallbacks.size());
assertEquals(0, beforeCloseCallbacks.size());
ma.close();
assertEquals(0, afterCreateCallbacks.size());
assertEquals(0, afterReuseCallbacks.size());
assertEquals(0, beforeCloseCallbacks.size());
LifecycleListener.removeLifecycleListener(listener);
}
@Test
public void testCallbacksAreCalledAfterCreate() {
LifecycleListener.addLifecycleListener(listener);
SlabImpl slab = new SlabImpl(1024); // 1k
MemoryAllocatorImpl ma = MemoryAllocatorImpl.createForUnitTest(
new NullOutOfOffHeapMemoryListener(), new NullOffHeapMemoryStats(), new SlabImpl[] {slab});
assertEquals(1, afterCreateCallbacks.size());
assertEquals(0, afterReuseCallbacks.size());
assertEquals(0, beforeCloseCallbacks.size());
closeAndFree(ma);
assertEquals(1, afterCreateCallbacks.size());
assertEquals(0, afterReuseCallbacks.size());
assertEquals(1, beforeCloseCallbacks.size());
LifecycleListener.removeLifecycleListener(listener);
}
@Test
public void testCallbacksAreCalledAfterReuse() {
LifecycleListener.addLifecycleListener(listener);
System.setProperty(MemoryAllocatorImpl.FREE_OFF_HEAP_MEMORY_PROPERTY, "false");
SlabImpl slab = new SlabImpl(1024); // 1k
MemoryAllocatorImpl ma = createAllocator(new NullOutOfOffHeapMemoryListener(),
new NullOffHeapMemoryStats(), new SlabImpl[] {slab});
assertEquals(1, afterCreateCallbacks.size());
assertEquals(0, afterReuseCallbacks.size());
assertEquals(0, beforeCloseCallbacks.size());
ma.close();
assertEquals(1, afterCreateCallbacks.size());
assertEquals(0, afterReuseCallbacks.size());
assertEquals(1, beforeCloseCallbacks.size());
ma = createAllocator(new NullOutOfOffHeapMemoryListener(), new NullOffHeapMemoryStats(), null);
assertEquals(1, afterCreateCallbacks.size());
assertEquals(1, afterReuseCallbacks.size());
assertEquals(1, beforeCloseCallbacks.size());
MemoryAllocatorImpl ma2 = createAllocator(new NullOutOfOffHeapMemoryListener(),
new NullOffHeapMemoryStats(), new SlabImpl[] {slab});
assertEquals(null, ma2);
assertEquals(1, afterCreateCallbacks.size());
assertEquals(1, afterReuseCallbacks.size());
assertEquals(1, beforeCloseCallbacks.size());
ma.close();
assertEquals(1, afterCreateCallbacks.size());
assertEquals(1, afterReuseCallbacks.size());
assertEquals(2, beforeCloseCallbacks.size());
}
private MemoryAllocatorImpl createAllocator(OutOfOffHeapMemoryListener ooohml,
OffHeapMemoryStats ohms, SlabImpl[] slab) {
try {
return MemoryAllocatorImpl.createForUnitTest(ooohml, ohms, slab);
} catch (IllegalStateException e) {
return null;
}
}
private void closeAndFree(MemoryAllocatorImpl ma) {
System.setProperty(MemoryAllocatorImpl.FREE_OFF_HEAP_MEMORY_PROPERTY, "true");
try {
ma.close();
} finally {
System.clearProperty(MemoryAllocatorImpl.FREE_OFF_HEAP_MEMORY_PROPERTY);
}
}
@Test
public void testCallbacksAreCalledAfterReuseWithFreeTrue() {
LifecycleListener.addLifecycleListener(listener);
SlabImpl slab = new SlabImpl(1024); // 1k
MemoryAllocatorImpl ma = MemoryAllocatorImpl.createForUnitTest(
new NullOutOfOffHeapMemoryListener(), new NullOffHeapMemoryStats(), new SlabImpl[] {slab});
assertEquals(1, afterCreateCallbacks.size());
assertEquals(0, afterReuseCallbacks.size());
assertEquals(0, beforeCloseCallbacks.size());
closeAndFree(ma);
assertEquals(1, afterCreateCallbacks.size());
assertEquals(0, afterReuseCallbacks.size());
assertEquals(1, beforeCloseCallbacks.size());
slab = new SlabImpl(1024); // 1k
MemoryAllocatorImpl ma2 = MemoryAllocatorImpl.createForUnitTest(
new NullOutOfOffHeapMemoryListener(), new NullOffHeapMemoryStats(), new SlabImpl[] {slab});
assertEquals(2, afterCreateCallbacks.size());
assertEquals(0, afterReuseCallbacks.size());
assertEquals(1, beforeCloseCallbacks.size());
closeAndFree(ma);
assertEquals(2, afterCreateCallbacks.size());
assertEquals(0, afterReuseCallbacks.size());
assertEquals(2, beforeCloseCallbacks.size());
}
private static class LifecycleListenerCallback {
private final MemoryAllocatorImpl allocator;
private final long timeStamp;
private final Throwable creationTime;
LifecycleListenerCallback(MemoryAllocatorImpl allocator) {
this.allocator = allocator;
timeStamp = System.currentTimeMillis();
creationTime = new Exception();
}
}
private static class TestLifecycleListener implements LifecycleListener {
private final List<LifecycleListenerCallback> afterCreateCallbacks;
private final List<LifecycleListenerCallback> afterReuseCallbacks;
private final List<LifecycleListenerCallback> beforeCloseCallbacks;
TestLifecycleListener(List<LifecycleListenerCallback> afterCreateCallbacks,
List<LifecycleListenerCallback> afterReuseCallbacks,
List<LifecycleListenerCallback> beforeCloseCallbacks) {
this.afterCreateCallbacks = afterCreateCallbacks;
this.afterReuseCallbacks = afterReuseCallbacks;
this.beforeCloseCallbacks = beforeCloseCallbacks;
}
@Override
public void afterCreate(MemoryAllocatorImpl allocator) {
afterCreateCallbacks.add(new LifecycleListenerCallback(allocator));
}
@Override
public void afterReuse(MemoryAllocatorImpl allocator) {
afterReuseCallbacks.add(new LifecycleListenerCallback(allocator));
}
@Override
public void beforeClose(MemoryAllocatorImpl allocator) {
beforeCloseCallbacks.add(new LifecycleListenerCallback(allocator));
}
}
}