franz1981 commented on pull request #3711:
URL: https://github.com/apache/activemq-artemis/pull/3711#issuecomment-908941654
I see that I'm relying (write side) on the knowledge that incoming data is
using a composite readable buffer, while the whole complete version should
account of Netty/NIO ones too, to save the copy to happen, looking more as
```java
public void addBytes(ReadableBuffer data) throws Exception {
parseLargeMessage(data);
boolean releaseBuffer = true;
ByteBuf writeBuffer = null;
try {
if (!data.hasArray()) {
// try access some direct buffer in
if (data instanceof ReadableBuffer.ByteBufferReader) {
final ByteBuffer nioBuffer = data.byteBuffer();
if (nioBuffer.isDirect()) {
writeBuffer = Unpooled.wrappedBuffer(nioBuffer);
releaseBuffer = false;
}
} else if (data instanceof NettyReadable) {
final ByteBuf nettyBuffer = ((NettyReadable)
data).getByteBuf();
if (nettyBuffer.isDirect()) {
writeBuffer = nettyBuffer;
releaseBuffer = false;
}
}
}
if (writeBuffer == null) {
// perform copy of data
final int bytes = data.remaining();
writeBuffer = PooledByteBufAllocator.DEFAULT.directBuffer(bytes,
bytes);
data.get(new NettyWritable(writeBuffer));
}
largeBody.addBytes(new ChannelBufferWrapper(writeBuffer, true,
true));
} finally {
if (releaseBuffer) {
if (writeBuffer != null) {
writeBuffer.release();
}
}
}
}
```
It seems very complicate to me, so I prefer to leave it as it is, @gemmellr
wdyt?
While I need your advice on the small change I've made on
https://github.com/apache/activemq-artemis/pull/3711/commits/7f56ab813f8eb1e5ceb7dba4d214ee6507d9f386:
is it safe?
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