/*
* 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.flink.runtime.io.network.buffer;
import org.apache.flink.core.memory.MemoryType;
import org.junit.Test;
import java.util.ArrayList;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
public class NetworkBufferPoolTest {
@Test
public void testCreatePoolAfterDestroy() {
try {
final int bufferSize = 128;
final int numBuffers = 10;
NetworkBufferPool globalPool = new NetworkBufferPool(numBuffers, bufferSize, MemoryType.HEAP);
assertEquals(bufferSize, globalPool.getMemorySegmentSize());
assertEquals(numBuffers, globalPool.getTotalNumberOfMemorySegments());
assertEquals(numBuffers, globalPool.getNumberOfAvailableMemorySegments());
assertEquals(0, globalPool.getNumberOfRegisteredBufferPools());
globalPool.destroy();
assertTrue(globalPool.isDestroyed());
try {
globalPool.createBufferPool(2, 2);
fail("Should throw an IllegalStateException");
}
catch (IllegalStateException e) {
// yippie!
}
try {
globalPool.createBufferPool(2, 10);
fail("Should throw an IllegalStateException");
}
catch (IllegalStateException e) {
// yippie!
}
try {
globalPool.createBufferPool(2, Integer.MAX_VALUE);
fail("Should throw an IllegalStateException");
}
catch (IllegalStateException e) {
// yippie!
}
}
catch (Exception e) {
e.printStackTrace();
fail(e.getMessage());
}
}
@Test
public void testDestroyAll() {
try {
NetworkBufferPool globalPool = new NetworkBufferPool(10, 128, MemoryType.HEAP);
BufferPool fixedPool = globalPool.createBufferPool(2, 2);
BufferPool boundedPool = globalPool.createBufferPool(0, 1);
BufferPool nonFixedPool = globalPool.createBufferPool(5, Integer.MAX_VALUE);
assertEquals(2, fixedPool.getNumberOfRequiredMemorySegments());
assertEquals(0, boundedPool.getNumberOfRequiredMemorySegments());
assertEquals(5, nonFixedPool.getNumberOfRequiredMemorySegments());
// actually, the buffer pool sizes may be different due to rounding and based on the internal order of
// the buffer pools - the total number of retrievable buffers should be equal to the number of buffers
// in the NetworkBufferPool though
ArrayList<Buffer> buffers = new ArrayList<>(globalPool.getTotalNumberOfMemorySegments());
collectBuffers:
for (int i = 0; i < 10; ++i) {
for (BufferPool bp : new BufferPool[] { fixedPool, boundedPool, nonFixedPool }) {
Buffer buffer = bp.requestBuffer();
if (buffer != null) {
assertNotNull(buffer.getMemorySegment());
buffers.add(buffer);
continue collectBuffers;
}
}
}
assertEquals(globalPool.getTotalNumberOfMemorySegments(), buffers.size());
assertNull(fixedPool.requestBuffer());
assertNull(boundedPool.requestBuffer());
assertNull(nonFixedPool.requestBuffer());
// destroy all allocated ones
globalPool.destroyAllBufferPools();
// check the destroyed status
assertFalse(globalPool.isDestroyed());
assertTrue(fixedPool.isDestroyed());
assertTrue(boundedPool.isDestroyed());
assertTrue(nonFixedPool.isDestroyed());
assertEquals(0, globalPool.getNumberOfRegisteredBufferPools());
// buffers are not yet recycled
assertEquals(0, globalPool.getNumberOfAvailableMemorySegments());
// the recycled buffers should go to the global pool
for (Buffer b : buffers) {
b.recycle();
}
assertEquals(globalPool.getTotalNumberOfMemorySegments(), globalPool.getNumberOfAvailableMemorySegments());
// can request no more buffers
try {
fixedPool.requestBuffer();
fail("Should fail with an IllegalStateException");
}
catch (IllegalStateException e) {
// yippie!
}
try {
boundedPool.requestBuffer();
fail("Should fail with an IllegalStateException");
}
catch (IllegalStateException e) {
// that's the way we like it, aha, aha
}
try {
nonFixedPool.requestBuffer();
fail("Should fail with an IllegalStateException");
}
catch (IllegalStateException e) {
// stayin' alive
}
// can create a new pool now
assertNotNull(globalPool.createBufferPool(10, Integer.MAX_VALUE));
}
catch (Exception e) {
e.printStackTrace();
fail(e.getMessage());
}
}
}