| /* |
| * 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.datasketches.memory.internal; |
| |
| import java.nio.ByteOrder; |
| |
| import org.apache.datasketches.memory.WritableBuffer; |
| |
| /** |
| * Implementation of {@link WritableBuffer} for map memory, non-native byte order. |
| * |
| * @author Roman Leventov |
| * @author Lee Rhodes |
| */ |
| final class MapNonNativeWritableBufferImpl extends NonNativeWritableBufferImpl { |
| private final AllocateDirectWritableMap dirWMap; |
| |
| MapNonNativeWritableBufferImpl( |
| final AllocateDirectWritableMap dirWMap, |
| final long offsetBytes, |
| final long capacityBytes, |
| final int typeId, |
| final long cumOffsetBytes) { |
| super(capacityBytes); |
| this.dirWMap = dirWMap; |
| this.offsetBytes = offsetBytes; |
| this.capacityBytes = capacityBytes; |
| this.typeId = removeNnBuf(typeId) | MAP | BUFFER | NONNATIVE; |
| this.cumOffsetBytes = cumOffsetBytes; |
| if ((this.owner != null) && (this.owner != Thread.currentThread())) { |
| throw new IllegalStateException(THREAD_EXCEPTION_TEXT); |
| } |
| this.owner = Thread.currentThread(); |
| } |
| |
| @Override |
| BaseWritableBufferImpl toWritableRegion( |
| final long regionOffsetBytes, |
| final long capacityBytes, |
| final boolean readOnly, |
| final ByteOrder byteOrder) { |
| final long newOffsetBytes = offsetBytes + regionOffsetBytes; |
| final long newCumOffsetBytes = cumOffsetBytes + regionOffsetBytes; |
| int typeIdOut = removeNnBuf(typeId) | MAP | REGION | (readOnly ? READONLY : 0); |
| |
| if (Util.isNativeByteOrder(byteOrder)) { |
| typeIdOut |= NATIVE; |
| return new MapWritableBufferImpl( |
| dirWMap, newOffsetBytes, capacityBytes, typeIdOut, newCumOffsetBytes); |
| } else { |
| typeIdOut |= NONNATIVE; |
| return new MapNonNativeWritableBufferImpl( |
| dirWMap, newOffsetBytes, capacityBytes, typeIdOut, newCumOffsetBytes); |
| } |
| } |
| |
| @Override |
| BaseWritableMemoryImpl toWritableMemory(final boolean readOnly, final ByteOrder byteOrder) { |
| int typeIdOut = removeNnBuf(typeId) | MEMORY | (readOnly ? READONLY : 0); |
| |
| if (byteOrder == ByteOrder.nativeOrder()) { |
| typeIdOut |= NATIVE; |
| return new MapWritableMemoryImpl( |
| dirWMap, offsetBytes, capacityBytes, typeIdOut, cumOffsetBytes); |
| } else { |
| typeIdOut |= NONNATIVE; |
| return new MapNonNativeWritableMemoryImpl( |
| dirWMap, offsetBytes, capacityBytes, typeIdOut, cumOffsetBytes); |
| } |
| } |
| |
| @Override |
| BaseWritableBufferImpl toDuplicate(final boolean readOnly, final ByteOrder byteOrder) { |
| int typeIdOut = removeNnBuf(typeId) | BUFFER | DUPLICATE | (readOnly ? READONLY : 0); |
| |
| if (byteOrder == ByteOrder.nativeOrder()) { |
| typeIdOut |= NATIVE; |
| return new MapWritableBufferImpl( |
| dirWMap, offsetBytes, capacityBytes, typeIdOut, cumOffsetBytes); |
| } else { |
| typeIdOut |= NONNATIVE; |
| return new MapNonNativeWritableBufferImpl( |
| dirWMap, offsetBytes, capacityBytes, typeIdOut, cumOffsetBytes); |
| } |
| } |
| |
| @Override |
| public void close() { |
| checkValid(); |
| checkThread(owner); |
| dirWMap.close(); //checksValidAndThread |
| } |
| |
| @Override |
| public void force() { |
| checkValid(); |
| checkThread(owner); |
| checkNotReadOnly(); |
| dirWMap.force(); //checksValidAndThread |
| } |
| |
| @Override |
| Object getUnsafeObject() { |
| return null; |
| } |
| |
| @Override |
| public boolean isLoaded() { |
| checkValid(); |
| checkThread(owner); |
| return dirWMap.isLoaded(); //checksValidAndThread |
| } |
| |
| @Override |
| public boolean isValid() { |
| return dirWMap.getValid().get(); |
| } |
| |
| @Override |
| public void load() { |
| checkValid(); |
| checkThread(owner); |
| dirWMap.load(); //checksValidAndThread |
| } |
| |
| } |