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io.netty.ByteBuf writeBytes(java.nio.ByteBuffer src) API说明

[英]io.netty.ByteBuf writeBytes(java.nio.ByteBuffer src) APIclarification

原文 2020-07-14 17:20:53 5 1 java/ arrays/ byte/ netty/ bytebuffer

I wanted to know how many memory copies are involved in the below writeBytes API from io.netty.buffer.ByteBuf Interface.我想知道下面来自 io.netty.buffer.ByteBuf 接口的 writeBytes API 涉及多少个 memory 副本。 Will the data gets copied to an intermediate byte array before getting transferred to Bytebuf?在传输到 Bytebuf 之前，数据会被复制到中间字节数组吗？ or will the data directly gets copied from backing array of nio.ByteBuffer to ButeBuf?还是将数据直接从 nio.ByteBuffer 的支持数组复制到 ButeBuf？ or will it depend on type of nio.ByteBuffer supplied还是取决于提供的 nio.ByteBuffer 类型

Note i am supplying a read-only ByteBuffer as a parameter.请注意，我提供了一个只读 ByteBuffer 作为参数。

API writeBytes(java.nio.ByteBuffer src) API writeBytes(java.nio.ByteBuffer src)

1 个解决方案

This is an implementation detail and so there are no real guarantees.这是一个实现细节，因此没有真正的保证。 That said we try to minimise the memory copies as much as possible within Netty.也就是说，我们尝试在 Netty 中尽可能减少 memory 副本。

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如何在 Java 中反序列化 java.nio.ByteBuffer - How to deserialize a java.nio.ByteBuffer in Java

是否有允许动态增长并扩展 java.nio.ByteBuffer 的 ByteBuffer 实现？ - Is there an implementation of ByteBuffer that allows for dynamic growing and extends java.nio.ByteBuffer?

如何使java.nio.ByteBuffer实例的Java代理对象？ - How to make a java proxy object to java.nio.ByteBuffer instance?

为什么Openjdk1.8的源代码中没有java.nio.ByteBuffer？ - Why there is no java.nio.ByteBuffer in the source code of Openjdk1.8?

java.nio.ByteBuffer 包装方法部分适用于 sbt 运行 - java.nio.ByteBuffer wrap method partly working with sbt run

扩展java.nio.ByteBuffer的Java循环字节缓冲区 - Java Circular Byte Buffer that Extends java.nio.ByteBuffer

直接 java.nio.ByteBuffer vs Java Array 性能测试 - Direct java.nio.ByteBuffer vs Java Array Performance Test

从ReadOnly java.nio.ByteBuffer中提取String - Extract String from ReadOnly java.nio.ByteBuffer

哪些JVM不支持直接java.nio.ByteBuffer？ - Which JVMs do not support direct java.nio.ByteBuffer?

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