| /** |
| * 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.io.erasurecode.rawcoder; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.io.erasurecode.ErasureCodeNative; |
| import org.apache.hadoop.io.erasurecode.ErasureCoderOptions; |
| |
| import java.nio.ByteBuffer; |
| |
| /** |
| * A Reed-Solomon raw decoder using Intel ISA-L library. |
| */ |
| @InterfaceAudience.Private |
| public class NativeRSRawDecoder extends AbstractNativeRawDecoder { |
| |
| static { |
| ErasureCodeNative.checkNativeCodeLoaded(); |
| } |
| |
| public NativeRSRawDecoder(ErasureCoderOptions coderOptions) { |
| super(coderOptions); |
| initImpl(coderOptions.getNumDataUnits(), coderOptions.getNumParityUnits()); |
| } |
| |
| @Override |
| protected void performDecodeImpl(ByteBuffer[] inputs, int[] inputOffsets, |
| int dataLen, int[] erased, |
| ByteBuffer[] outputs, int[] outputOffsets) { |
| decodeImpl(inputs, inputOffsets, dataLen, erased, outputs, outputOffsets); |
| } |
| |
| @Override |
| public void release() { |
| destroyImpl(); |
| } |
| |
| private native void initImpl(int numDataUnits, int numParityUnits); |
| |
| private native void decodeImpl( |
| ByteBuffer[] inputs, int[] inputOffsets, int dataLen, int[] erased, |
| ByteBuffer[] outputs, int[] outputOffsets); |
| |
| private native void destroyImpl(); |
| |
| } |