package org.apache.directmemory.memory.allocator;
/*
* 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.
*/
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import junit.framework.Assert;
import org.apache.directmemory.memory.buffer.MemoryBuffer;
import org.junit.Test;
public class SlabByteBufferAllocatorTest
{
@Test
public void allocationTest()
throws IOException
{
List<FixedSizeByteBufferAllocatorImpl> slabs = new ArrayList<FixedSizeByteBufferAllocatorImpl>();
slabs.add( new FixedSizeByteBufferAllocatorImpl( 0, 1024, 128, 1 ) );
slabs.add( new FixedSizeByteBufferAllocatorImpl( 1, 1024, 256, 1 ) );
slabs.add( new FixedSizeByteBufferAllocatorImpl( 2, 1024, 512, 1 ) );
slabs.add( new FixedSizeByteBufferAllocatorImpl( 3, 1024, 1024, 1 ) );
Allocator allocator = new SlabByteBufferAllocator( 0, slabs, false );
MemoryBuffer bf1 = allocator.allocate( 250 );
Assert.assertEquals( 256, bf1.maxCapacity() );
Assert.assertEquals( 250, bf1.capacity() );
MemoryBuffer bf2 = allocator.allocate( 251 );
Assert.assertEquals( 256, bf2.maxCapacity() );
Assert.assertEquals( 251, bf2.capacity() );
MemoryBuffer bf3 = allocator.allocate( 200 );
Assert.assertEquals( 256, bf3.maxCapacity() );
Assert.assertEquals( 200, bf3.capacity() );
MemoryBuffer bf4 = allocator.allocate( 100 );
Assert.assertEquals( 128, bf4.maxCapacity() );
Assert.assertEquals( 100, bf4.capacity() );
MemoryBuffer bf5 = allocator.allocate( 550 );
Assert.assertEquals( 1024, bf5.maxCapacity() );
Assert.assertEquals( 550, bf5.capacity() );
MemoryBuffer bf6 = allocator.allocate( 800 );
Assert.assertNull( bf6 );
allocator.free( bf5 );
MemoryBuffer bf7 = allocator.allocate( 800 );
Assert.assertEquals( 1024, bf7.maxCapacity() );
Assert.assertEquals( 800, bf7.capacity() );
allocator.close();
}
}