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fix(java): fix bytebuffer no such method error (#1580)
## What does this PR do? This PR add a bytebuffer util and fix bytebuffer no such method error ## Related issues Closes #1577 #1579 ## Does this PR introduce any user-facing change? <!-- If any user-facing interface changes, please [open an issue](https://github.com/apache/incubator-fury/issues/new/choose) describing the need to do so and update the document if necessary. --> - [ ] Does this PR introduce any public API change? - [ ] Does this PR introduce any binary protocol compatibility change? ## Benchmark <!-- When the PR has an impact on performance (if you don't know whether the PR will have an impact on performance, you can submit the PR first, and if it will have impact on performance, the code reviewer will explain it), be sure to attach a benchmark data here. -->
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108
java/fury-core/src/main/java/org/apache/fury/memory/ByteBufferUtil.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,108 @@ | ||
| /* | ||
| * 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.fury.memory; | ||
|
|
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| import java.lang.reflect.Field; | ||
| import java.nio.Buffer; | ||
| import java.nio.ByteBuffer; | ||
| import org.apache.fury.util.Preconditions; | ||
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| public class ByteBufferUtil { | ||
| private static final long BUFFER_ADDRESS_FIELD_OFFSET; | ||
| private static final long BUFFER_CAPACITY_FIELD_OFFSET; | ||
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| static { | ||
| try { | ||
| Field addressField = Buffer.class.getDeclaredField("address"); | ||
| BUFFER_ADDRESS_FIELD_OFFSET = Platform.objectFieldOffset(addressField); | ||
| Preconditions.checkArgument(BUFFER_ADDRESS_FIELD_OFFSET != 0); | ||
| Field capacityField = Buffer.class.getDeclaredField("capacity"); | ||
| BUFFER_CAPACITY_FIELD_OFFSET = Platform.objectFieldOffset(capacityField); | ||
| Preconditions.checkArgument(BUFFER_CAPACITY_FIELD_OFFSET != 0); | ||
| } catch (NoSuchFieldException e) { | ||
| throw new IllegalStateException(e); | ||
| } | ||
| } | ||
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| public static long getAddress(ByteBuffer buffer) { | ||
| Preconditions.checkNotNull(buffer, "buffer is null"); | ||
| Preconditions.checkArgument(buffer.isDirect(), "Can't get address of a non-direct ByteBuffer."); | ||
| long offHeapAddress; | ||
| try { | ||
| offHeapAddress = Platform.getLong(buffer, BUFFER_ADDRESS_FIELD_OFFSET); | ||
| } catch (Throwable t) { | ||
| throw new Error("Could not access direct byte buffer address field.", t); | ||
| } | ||
| return offHeapAddress; | ||
| } | ||
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| private static final ByteBuffer localBuffer = ByteBuffer.allocateDirect(0); | ||
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| /** Create a direct buffer from native memory represented by address [address, address + size). */ | ||
| public static ByteBuffer createDirectByteBufferFromNativeAddress(long address, int size) { | ||
| try { | ||
| // ByteBuffer.allocateDirect(0) is about 30x slower than `localBuffer.duplicate()`. | ||
| ByteBuffer buffer = localBuffer.duplicate(); | ||
| Platform.putLong(buffer, BUFFER_ADDRESS_FIELD_OFFSET, address); | ||
| Platform.putInt(buffer, BUFFER_CAPACITY_FIELD_OFFSET, size); | ||
| buffer.clear(); | ||
| return buffer; | ||
| } catch (Throwable t) { | ||
| throw new Error("Failed to wrap unsafe off-heap memory with ByteBuffer", t); | ||
| } | ||
| } | ||
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| /** Wrap a buffer [address, address + size) into provided <code>buffer</code>. */ | ||
| public static void wrapDirectByteBufferFromNativeAddress( | ||
| ByteBuffer buffer, long address, int size) { | ||
| Preconditions.checkArgument( | ||
| buffer.isDirect(), "Can't wrap native memory into a non-direct ByteBuffer."); | ||
| Platform.putLong(buffer, BUFFER_ADDRESS_FIELD_OFFSET, address); | ||
| Platform.putInt(buffer, BUFFER_CAPACITY_FIELD_OFFSET, size); | ||
| buffer.clear(); | ||
| } | ||
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| public static ByteBuffer wrapDirectBuffer(long address, int size) { | ||
| return createDirectByteBufferFromNativeAddress(address, size); | ||
| } | ||
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| /** Wrap a buffer [address, address + size) into provided <code>buffer</code>. */ | ||
| public static void wrapDirectBuffer(ByteBuffer buffer, long address, int size) { | ||
| Platform.putLong(buffer, BUFFER_ADDRESS_FIELD_OFFSET, address); | ||
| Platform.putInt(buffer, BUFFER_CAPACITY_FIELD_OFFSET, size); | ||
| buffer.clear(); | ||
| } | ||
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| public static void clearBuffer(Buffer buffer) { | ||
| buffer.clear(); | ||
| } | ||
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| public static void flipBuffer(Buffer buffer) { | ||
| buffer.flip(); | ||
| } | ||
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| public static void rewind(Buffer buffer) { | ||
| buffer.rewind(); | ||
| } | ||
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| public static void position(Buffer buffer, int pos) { | ||
| buffer.position(pos); | ||
| } | ||
| } |
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