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Fix buffer leak in EpollDatagramChannel

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Motivation:
EpollDatagramChannel produced buffer leaks when tried to read from the channel and nothing was ready to be read.

Modifications:
Correctly release buffer if nothing was read

Result:
No buffer leak
This commit is contained in:
Norman Maurer 2014-04-18 20:34:37 +02:00
parent b13953fd45
commit 886829d7e0
1 changed files with 15 additions and 25 deletions
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40
transport-native-epoll/src/main/java/io/netty/channel/epoll/EpollDatagramChannel.java
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@ -371,12 +371,11 @@ public final class EpollDatagramChannel extends AbstractEpollChannel implements
assert eventLoop().inEventLoop();
final ChannelPipeline pipeline = pipeline();
Throwable exception = null;
try {
try {
for (;;) {
boolean free = true;
ByteBuf data = allocHandle.allocate(config.getAllocator());
for (;;) {
ByteBuf data = null;
try {
data = allocHandle.allocate(config.getAllocator());
int writerIndex = data.writerIndex();
DatagramSocketAddress remoteAddress;
if (data.hasMemoryAddress()) {
@ -396,28 +395,19 @@ public final class EpollDatagramChannel extends AbstractEpollChannel implements
int readBytes = remoteAddress.receivedAmount;
data.writerIndex(data.writerIndex() + readBytes);
allocHandle.record(readBytes);
try {
readPending = false;
pipeline.fireChannelRead(
new DatagramPacket(data, (InetSocketAddress) localAddress(), remoteAddress));
free = false;
} catch (Throwable t) {
// keep on reading as we use epoll ET and need to consume everything from the socket
pipeline.fireChannelReadComplete();
pipeline.fireExceptionCaught(t);
} finally {
if (free) {
data.release();
}
readPending = false;
pipeline.fireChannelRead(
new DatagramPacket(data, (InetSocketAddress) localAddress(), remoteAddress));
data = null;
} catch (Throwable t) {
// keep on reading as we use epoll ET and need to consume everything from the socket
pipeline.fireChannelReadComplete();
pipeline.fireExceptionCaught(t);
} finally {
if (data != null) {
data.release();
}
}
} catch (Throwable t) {
exception = t;
}
pipeline.fireChannelReadComplete();
if (exception != null) {
pipeline.fireExceptionCaught(exception);
}
} finally {
// Check if there is a readPending which was not processed yet.