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Nick Hill b413464091 Optimize WriteTask recycling (#9800)
Motivation

AbstractChannelHandlerContext uses recyclable tasks when performing
writes from outside of the event loop. There's currently two distinct
classes WriteTask and WriteAndFlushTask used for executing writes versus
writeAndFlushes, and these are recycled in separate pools. However it is
straightforward to just have a single class / recycler pool, with a
flush flag.

Modifications

- Unify WriteTasks into a single class using the sign bit of the
existing size field to indicate whether a flush should be performed
- Use the new executor lazyExecute() method to lazily execute the
non-flush write tasks explicitly
- Change AbstractChannelHandlerContext#invokeWrite and
AbstractChannelHandlerContext#invokeWriteAndFlush from private to
package-private to avoid synthetic methods
- Correct the default object size estimate for WriteTask

Results

- Possibly improved reuse of recycled write tasks
- Fewer virtual method calls and shorter path lengths
- Less code
2019-11-23 20:45:35 +01:00
.github Change the netty.io homepage scheme(http -> https) (#9344) 2019-07-09 21:09:42 +02:00
.mvn Update to latest recommended maven version (#9785) 2019-11-18 11:03:25 +01:00
all Introduce MacOSDnsServerAddressStreamProvider which correctly detect all nameserver configuration on MacOS (#9161) 2019-10-28 15:02:45 +01:00
bom [maven-release-plugin] prepare for next development iteration 2019-10-24 12:57:00 +00:00
buffer Reduce ByteBuffer duplication when resizing pooled direct ByteBufs (#9765) 2019-11-16 11:26:02 -08:00
codec Clean up expired docs. (#9756) 2019-11-06 09:43:25 +01:00
codec-dns [maven-release-plugin] prepare for next development iteration 2019-10-24 12:57:00 +00:00
codec-haproxy [maven-release-plugin] prepare for next development iteration 2019-10-24 12:57:00 +00:00
codec-http Send close frame on channel close, when this frame was not send manually (#9745) 2019-11-18 20:32:21 +01:00
codec-http2 Add test to check Connection-Specific headers are removed in HTTP/2 (by HttpConversionUtil.toHttp2Headers) (#9766) 2019-11-08 10:14:26 +01:00
codec-memcache [maven-release-plugin] prepare for next development iteration 2019-10-24 12:57:00 +00:00
codec-mqtt Add constants for fixed-header only MQTT messages (#9749) 2019-11-08 10:17:01 +01:00
codec-redis [maven-release-plugin] prepare for next development iteration 2019-10-24 12:57:00 +00:00
codec-smtp [maven-release-plugin] prepare for next development iteration 2019-10-24 12:57:00 +00:00
codec-socks [maven-release-plugin] prepare for next development iteration 2019-10-24 12:57:00 +00:00
codec-stomp Fix encoding/decoding for UTF-8 stomp commands and headers (#9740) 2019-11-06 12:07:38 +01:00
codec-xml [maven-release-plugin] prepare for next development iteration 2019-10-24 12:57:00 +00:00
common Cleanup Recycler to better encapsulate stuff (#9739) 2019-11-04 17:43:53 +01:00
dev-tools [maven-release-plugin] prepare for next development iteration 2019-10-24 12:57:00 +00:00
docker Upgrade various JDK flavors / version in our docker-compose files (#9737) 2019-10-31 12:16:24 +01:00
example Fix websocket examples (#9757) 2019-11-06 09:44:29 +01:00
handler Improve java doc for MINIMAL_WAIT (#9779) 2019-11-17 08:35:24 -08:00
handler-proxy [maven-release-plugin] prepare for next development iteration 2019-10-24 12:57:00 +00:00
license Introduce MacOSDnsServerAddressStreamProvider which correctly detect all nameserver configuration on MacOS (#9161) 2019-10-28 15:02:45 +01:00
microbench Update to latest JMH version (#9787) 2019-11-19 11:28:18 +01:00
resolver [maven-release-plugin] prepare for next development iteration 2019-10-24 12:57:00 +00:00
resolver-dns [maven-release-plugin] prepare for next development iteration 2019-10-24 12:57:00 +00:00
resolver-dns-native-macos Fix version for resolver-dns-native-macos introduced by 939e928312 2019-10-28 15:09:30 +01:00
tarball Introduce MacOSDnsServerAddressStreamProvider which correctly detect all nameserver configuration on MacOS (#9161) 2019-10-28 15:02:45 +01:00
testsuite [maven-release-plugin] prepare for next development iteration 2019-10-24 12:57:00 +00:00
testsuite-autobahn [maven-release-plugin] prepare for next development iteration 2019-10-24 12:57:00 +00:00
testsuite-http2 Validate pseudo and conditional HTTP/2 headers (#8619) 2019-10-27 16:13:01 +01:00
testsuite-native-image [maven-release-plugin] prepare for next development iteration 2019-10-24 12:57:00 +00:00
testsuite-osgi [maven-release-plugin] prepare for next development iteration 2019-10-24 12:57:00 +00:00
testsuite-shading [maven-release-plugin] prepare for next development iteration 2019-10-24 12:57:00 +00:00
transport Optimize WriteTask recycling (#9800) 2019-11-23 20:45:35 +01:00
transport-blockhound-tests Test that NettyBlockHoundIntegration can be loaded with ServiceLoader (#9743) 2019-11-01 07:07:33 +01:00
transport-native-epoll Add one new constructor with threadFactory only (#9773) 2019-11-18 09:42:44 +01:00
transport-native-kqueue Add one new constructor with threadFactory only (#9773) 2019-11-18 09:42:44 +01:00
transport-native-unix-common Introduce MacOSDnsServerAddressStreamProvider which correctly detect all nameserver configuration on MacOS (#9161) 2019-10-28 15:02:45 +01:00
transport-native-unix-common-tests [maven-release-plugin] prepare for next development iteration 2019-10-24 12:57:00 +00:00
transport-rxtx [maven-release-plugin] prepare for next development iteration 2019-10-24 12:57:00 +00:00
transport-sctp [maven-release-plugin] prepare for next development iteration 2019-10-24 12:57:00 +00:00
transport-udt [maven-release-plugin] prepare for next development iteration 2019-10-24 12:57:00 +00:00
.fbprefs Updated Find Bugs configuration 2009-03-04 10:33:09 +00:00
.gitattributes Include mvn wrapper to make setup of development env easier 2018-01-26 08:13:17 +01:00
.gitignore Add vscode specific files / directory to .gitignore (#9652) 2019-10-10 09:35:08 +04:00
CONTRIBUTING.md Change the netty.io homepage scheme(http -> https) (#9344) 2019-07-09 21:09:42 +02:00
LICENSE.txt Relicensed to Apache License v2 2009-08-28 07:15:49 +00:00
mvnw Include mvn wrapper to make setup of development env easier 2018-01-26 08:13:17 +01:00
mvnw.cmd Include mvn wrapper to make setup of development env easier 2018-01-26 08:13:17 +01:00
NOTICE.txt Introduce MacOSDnsServerAddressStreamProvider which correctly detect all nameserver configuration on MacOS (#9161) 2019-10-28 15:02:45 +01:00
pom.xml Enable generation of test JARs (#9774) 2019-11-18 09:41:25 +01:00
README.md Change the netty.io homepage scheme(http -> https) (#9344) 2019-07-09 21:09:42 +02:00
run-example.sh Add UptimeServer and adjust UptimeClient's code style. 2017-04-28 07:41:07 +02:00

Netty Project

Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients.

How to build

For the detailed information about building and developing Netty, please visit the developer guide. This page only gives very basic information.

You require the following to build Netty:

Note that this is build-time requirement. JDK 5 (for 3.x) or 6 (for 4.0+) is enough to run your Netty-based application.

Branches to look

Development of all versions takes place in each branch whose name is identical to <majorVersion>.<minorVersion>. For example, the development of 3.9 and 4.0 resides in the branch '3.9' and the branch '4.0' respectively.

Usage with JDK 9

Netty can be used in modular JDK9 applications as a collection of automatic modules. The module names follow the reverse-DNS style, and are derived from subproject names rather than root packages due to historical reasons. They are listed below:

  • io.netty.all
  • io.netty.buffer
  • io.netty.codec
  • io.netty.codec.dns
  • io.netty.codec.haproxy
  • io.netty.codec.http
  • io.netty.codec.http2
  • io.netty.codec.memcache
  • io.netty.codec.mqtt
  • io.netty.codec.redis
  • io.netty.codec.smtp
  • io.netty.codec.socks
  • io.netty.codec.stomp
  • io.netty.codec.xml
  • io.netty.common
  • io.netty.handler
  • io.netty.handler.proxy
  • io.netty.resolver
  • io.netty.resolver.dns
  • io.netty.transport
  • io.netty.transport.epoll (native omitted - reserved keyword in Java)
  • io.netty.transport.kqueue (native omitted - reserved keyword in Java)
  • io.netty.transport.unix.common (native omitted - reserved keyword in Java)
  • io.netty.transport.rxtx
  • io.netty.transport.sctp
  • io.netty.transport.udt

Automatic modules do not provide any means to declare dependencies, so you need to list each used module separately in your module-info file.