| /* |
| * 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.drill.exec.ops; |
| |
| import io.netty.buffer.DrillBuf; |
| |
| import org.apache.drill.exec.memory.BufferAllocator; |
| |
| import com.carrotsearch.hppc.LongObjectHashMap; |
| import com.carrotsearch.hppc.predicates.LongObjectPredicate; |
| |
| public class BufferManagerImpl implements BufferManager { |
| private LongObjectHashMap<DrillBuf> managedBuffers = new LongObjectHashMap<>(); |
| private final BufferAllocator allocator; |
| |
| public BufferManagerImpl(BufferAllocator allocator) { |
| this.allocator = allocator; |
| } |
| |
| @Override |
| public void close() { |
| managedBuffers.forEach((LongObjectPredicate<DrillBuf>) (key, value) -> { |
| value.release(); |
| return true; |
| }); |
| managedBuffers.clear(); |
| } |
| |
| public BufferAllocator getAllocator() { |
| return allocator; |
| } |
| |
| @Override |
| public DrillBuf replace(DrillBuf old, int newSize) { |
| if (managedBuffers.remove(old.memoryAddress()) == null) { |
| throw new IllegalStateException("Tried to remove unmanaged buffer."); |
| } |
| old.release(1); |
| return getManagedBuffer(newSize); |
| } |
| |
| @Override |
| public DrillBuf getManagedBuffer() { |
| return getManagedBuffer(256); |
| } |
| |
| @Override |
| public DrillBuf getManagedBuffer(int size) { |
| DrillBuf newBuf = allocator.buffer(size, this); |
| managedBuffers.put(newBuf.memoryAddress(), newBuf); |
| return newBuf; |
| } |
| } |