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132 changes: 132 additions & 0 deletions
132
...raph-core/src/main/java/org/apache/hugegraph/memory/consumer/impl/id/BinaryIdOffHeap.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,132 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
|
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| package org.apache.hugegraph.memory.consumer.impl.id; | ||
|
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| import org.apache.hugegraph.backend.id.Id; | ||
| import org.apache.hugegraph.backend.serializer.BinaryBackendEntry; | ||
| import org.apache.hugegraph.memory.consumer.MemoryConsumer; | ||
| import org.apache.hugegraph.memory.pool.MemoryPool; | ||
| import org.apache.hugegraph.util.Bytes; | ||
| import org.apache.hugegraph.util.E; | ||
|
|
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| import io.netty.buffer.ByteBuf; | ||
| import io.netty.buffer.ByteBufUtil; | ||
|
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| public class BinaryIdOffHeap extends BinaryBackendEntry.BinaryId implements MemoryConsumer { | ||
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| private final MemoryPool memoryPool; | ||
| private final MemoryConsumer originId; | ||
| private ByteBuf bytesOffHeap; | ||
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| public BinaryIdOffHeap(byte[] bytes, Id id, MemoryPool memoryPool, MemoryConsumer originId) { | ||
| super(bytes, id); | ||
| this.memoryPool = memoryPool; | ||
| this.originId = originId; | ||
| serializeSelfToByteBuf(); | ||
| releaseOriginalOnHeapVars(); | ||
| } | ||
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| @Override | ||
| public void serializeSelfToByteBuf() { | ||
| this.bytesOffHeap = (ByteBuf) memoryPool.requireMemory(bytes.length); | ||
| this.bytesOffHeap.markReaderIndex(); | ||
| this.bytesOffHeap.writeBytes(bytes); | ||
| } | ||
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| @Override | ||
| public BinaryBackendEntry.BinaryId zeroCopyReadFromByteBuf() { | ||
| return new BinaryBackendEntry.BinaryId(ByteBufUtil.getBytes(bytesOffHeap), | ||
| (Id) originId.zeroCopyReadFromByteBuf()); | ||
| } | ||
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| @Override | ||
| public MemoryPool getOperatorMemoryPool() { | ||
| return this.memoryPool; | ||
| } | ||
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| @Override | ||
| public void releaseOriginalOnHeapVars() { | ||
| this.bytes = null; | ||
| this.id = null; | ||
| } | ||
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| @Override | ||
| public Object asObject() { | ||
| return bytesOffHeap.nioBuffer(); | ||
| } | ||
|
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| @Override | ||
| public String toString() { | ||
| return "0x" + Bytes.toHex(asBytes()); | ||
| } | ||
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| @Override | ||
| public boolean equals(Object other) { | ||
| if (!(other instanceof BinaryIdOffHeap)) { | ||
| return false; | ||
| } | ||
| return bytesOffHeap.equals(((BinaryIdOffHeap) other).bytesOffHeap); | ||
| } | ||
|
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| @Override | ||
| public int hashCode() { | ||
| return bytesOffHeap.hashCode(); | ||
| } | ||
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| @Override | ||
| public int length() { | ||
| return bytesOffHeap.readableBytes(); | ||
| } | ||
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| @Override | ||
| public byte[] asBytes(int offset) { | ||
| E.checkArgument(offset < this.bytesOffHeap.readableBytes(), | ||
| "Invalid offset %s, must be < length %s", | ||
| offset, this.bytesOffHeap.readableBytes()); | ||
| try { | ||
| // zero-copy read | ||
| byte[] tmpBytes = new byte[offset]; | ||
| this.bytesOffHeap.readBytes(tmpBytes); | ||
| return tmpBytes; | ||
| } finally { | ||
| this.bytesOffHeap.resetReaderIndex(); | ||
| } | ||
| } | ||
|
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| @Override | ||
| public byte[] asBytes() { | ||
| try { | ||
| // zero-copy read | ||
| byte[] tmpBytes = new byte[bytesOffHeap.readableBytes()]; | ||
| this.bytesOffHeap.readBytes(tmpBytes); | ||
| return tmpBytes; | ||
| } finally { | ||
| this.bytesOffHeap.resetReaderIndex(); | ||
| } | ||
| } | ||
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| @Override | ||
| public int compareTo(Id other) { | ||
| return bytesOffHeap.compareTo(((BinaryIdOffHeap) other).bytesOffHeap); | ||
| } | ||
|
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| @Override | ||
| public Id origin() { | ||
| return (Id) originId.zeroCopyReadFromByteBuf(); | ||
| } | ||
| } |
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