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Reverted the previous optimization because it might perform very bad as the number of components in the composite buffer increases

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This commit is contained in:
Trustin Lee 2009-11-17 15:46:34 +00:00
parent 902ab48820
commit 8eeb72cbbf
5 changed files with 32 additions and 32 deletions
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6
src/main/java/org/jboss/netty/handler/codec/frame/DelimiterBasedFrameDecoder.java
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@ -179,12 +179,12 @@ public class DelimiterBasedFrameDecoder extends FrameDecoder {
}
if (stripDelimiter) {
frame = buffer.slice(buffer.readerIndex(), minFrameLength);
frame = buffer.readBytes(minFrameLength);
buffer.skipBytes(minDelimLength);
} else {
frame = buffer.slice(buffer.readerIndex(), minFrameLength + minDelimLength);
frame = buffer.readBytes(minFrameLength + minDelimLength);
}
buffer.skipBytes(minFrameLength + minDelimLength);
return frame;
} else {
if (buffer.readableBytes() > maxFrameLength) {

4
src/main/java/org/jboss/netty/handler/codec/frame/FixedLengthFrameDecoder.java
View File

@ -63,9 +63,7 @@ public class FixedLengthFrameDecoder extends FrameDecoder {
if (buffer.readableBytes() < frameLength) {
return null;
} else {
ChannelBuffer frame = buffer.slice(buffer.readerIndex(), frameLength);
buffer.skipBytes(frameLength);
return frame;
return buffer.readBytes(frameLength);
}
}
}

40
src/main/java/org/jboss/netty/handler/codec/frame/FrameDecoder.java
View File

@ -16,6 +16,7 @@
package org.jboss.netty.handler.codec.frame;
import java.net.SocketAddress;
import java.util.concurrent.atomic.AtomicReference;
import org.jboss.netty.buffer.ChannelBuffer;
import org.jboss.netty.buffer.ChannelBuffers;
@ -180,8 +181,8 @@ import org.jboss.netty.handler.codec.replay.ReplayingDecoder;
public abstract class FrameDecoder extends SimpleChannelUpstreamHandler {
private final boolean unfold;
private ChannelBuffer cumulation = ChannelBuffers.EMPTY_BUFFER;
private boolean cleanedUp;
private final AtomicReference<ChannelBuffer> cumulation =
new AtomicReference<ChannelBuffer>();
protected FrameDecoder() {
this(false);
@ -206,17 +207,16 @@ public abstract class FrameDecoder extends SimpleChannelUpstreamHandler {
return;
}
ChannelBuffer cumulation = this.cumulation;
ChannelBuffer cumulation = cumulation(ctx);
if (cumulation.readable()) {
cumulation = ChannelBuffers.wrappedBuffer(cumulation, input);
} else {
cumulation = input;
}
try {
cumulation.discardReadBytes();
cumulation.writeBytes(input);
callDecode(ctx, e.getChannel(), cumulation, e.getRemoteAddress());
} finally {
this.cumulation = cumulation.slice();
} else {
callDecode(ctx, e.getChannel(), input, e.getRemoteAddress());
if (input.readable()) {
cumulation.writeBytes(input);
}
}
}
@ -321,12 +321,10 @@ public abstract class FrameDecoder extends SimpleChannelUpstreamHandler {
private void cleanup(ChannelHandlerContext ctx, ChannelStateEvent e)
throws Exception {
try {
if (cleanedUp) {
ChannelBuffer cumulation = this.cumulation.getAndSet(null);
if (cumulation == null) {
return;
}
cleanedUp = true;
ChannelBuffer cumulation = this.cumulation;
this.cumulation = ChannelBuffers.EMPTY_BUFFER;
if (cumulation.readable()) {
// Make sure all frames are read before notifying a closed channel.
@ -344,4 +342,16 @@ public abstract class FrameDecoder extends SimpleChannelUpstreamHandler {
ctx.sendUpstream(e);
}
}
private ChannelBuffer cumulation(ChannelHandlerContext ctx) {
ChannelBuffer buf = cumulation.get();
if (buf == null) {
buf = ChannelBuffers.dynamicBuffer(
ctx.getChannel().getConfig().getBufferFactory());
if (!cumulation.compareAndSet(null, buf)) {
buf = cumulation.get();
}
}
return buf;
}
}

8
src/main/java/org/jboss/netty/handler/codec/frame/LengthFieldBasedFrameDecoder.java
View File

@ -363,11 +363,7 @@ public class LengthFieldBasedFrameDecoder extends FrameDecoder {
"Adjusted frame length (" + frameLength + ") is less " +
"than initialBytesToStrip: " + initialBytesToStrip);
}
ChannelBuffer frame = buffer.slice(
buffer.readerIndex() + initialBytesToStrip,
frameLengthInt - initialBytesToStrip);
buffer.skipBytes(frameLengthInt);
return frame;
buffer.skipBytes(initialBytesToStrip);
return buffer.readBytes(frameLengthInt - initialBytesToStrip);
}
}

6
src/main/java/org/jboss/netty/handler/codec/protobuf/ProtobufVarint32FrameDecoder.java
View File

@ -55,11 +55,7 @@ public class ProtobufVarint32FrameDecoder extends FrameDecoder {
break;
}
// TODO Extract (ChannelBuffer.slice(int, int) + skipBytes(int))
// into a new method in ChannelBuffer
ChannelBuffer frame = buffer.slice(buffer.readerIndex(), messageSize);
buffer.skipBytes(messageSize);
return frame;
return buffer.readBytes(messageSize);
}
}