/**
* 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.hadoop.hbase.io;
import java.nio.ByteBuffer;
import org.apache.hadoop.hbase.testclassification.IOTests;
import org.apache.hadoop.hbase.testclassification.SmallTests;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import static org.junit.Assert.assertEquals;
@Category({ IOTests.class, SmallTests.class })
public class TestByteBufferPool {
@Test
public void testOffheapBBPool() throws Exception {
boolean directByteBuffer = true;
testBBPool(10, 100, directByteBuffer);
}
@Test
public void testOnheapBBPool() throws Exception {
boolean directByteBuffer = false;
testBBPool(10, 100, directByteBuffer);
}
private void testBBPool(int maxPoolSize, int bufferSize, boolean directByteBuffer) {
ByteBufferPool pool = new ByteBufferPool(bufferSize, maxPoolSize, directByteBuffer);
for (int i = 0; i < maxPoolSize; i++) {
ByteBuffer buffer = pool.getBuffer();
assertEquals(0, buffer.position());
assertEquals(bufferSize, buffer.limit());
assertEquals(directByteBuffer, buffer.isDirect());
}
assertEquals(0, pool.getQueueSize());
ByteBuffer bb = directByteBuffer ? ByteBuffer.allocate(bufferSize)
: ByteBuffer.allocateDirect(bufferSize);
pool.putbackBuffer(bb);
assertEquals(0, pool.getQueueSize());
bb = directByteBuffer ? ByteBuffer.allocateDirect(bufferSize + 1)
: ByteBuffer.allocate(bufferSize + 1);
pool.putbackBuffer(bb);
assertEquals(0, pool.getQueueSize());
}
}