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Norman Maurer 8fdf373557
Skip execution of Channel*Handler method if annotated with @Skip and just use the next handler in the pipeline. (#8723)
Motivation:

Invoking ChannelHandlers is not free and can result in some overhead when the ChannelPipeline becomes very long. This is especially true if most handlers will just forward the call to the next handler in the pipeline. When the user extends Channel*HandlerAdapter we can easily detect if can just skip the handler and invoke the next handler in the pipeline directly. This reduce the overhead of dispatch but also reduce the call-stack in many cases.

Modifications:

Detect if we can skip the handler when walking the pipeline.

Result:

Reduce overhead for long pipelines.

Benchmark                                       (extraHandlers)   Mode  Cnt       Score      Error  Units
DefaultChannelPipelineBenchmark.propagateEventOld             4  thrpt   10  267313.031 ± 9131.140  ops/s
DefaultChannelPipelineBenchmark.propagateEvent                4  thrpt   10  824825.673 ± 12727.594  ops/s
2019-01-22 08:58:58 +01:00
.github Use GitHub Issue/PR Template Feature 2016-12-07 11:40:26 -08:00
.mvn support publishing snapshots from docker based ci (#8634) 2018-12-07 06:16:39 +01:00
all Remove OIO transport (and transports that depend on it). (#8580) 2018-11-21 15:23:18 +01:00
bom Remove OIO transport (and transports that depend on it). (#8580) 2018-11-21 15:23:18 +01:00
buffer Updating ByteBuf Javadocs to represent actual behaviour. (#8709) 2019-01-14 20:09:18 +01:00
codec Require Java8 as minimum (#8739) 2019-01-22 08:48:18 +01:00
codec-dns Correcting Maven Dependencies (#8622) 2018-12-06 09:02:00 +01:00
codec-haproxy Correcting Maven Dependencies (#8622) 2018-12-06 09:02:00 +01:00
codec-http HttpUtil#is100ContinueExpected clean up (#8740) 2019-01-22 08:50:31 +01:00
codec-http2 Remove duplicated declaration of dependency 2019-01-21 11:54:55 +01:00
codec-memcache Correcting Maven Dependencies (#8622) 2018-12-06 09:02:00 +01:00
codec-mqtt Correcting Maven Dependencies (#8622) 2018-12-06 09:02:00 +01:00
codec-redis Correcting Maven Dependencies (#8622) 2018-12-06 09:02:00 +01:00
codec-smtp Correcting Maven Dependencies (#8622) 2018-12-06 09:02:00 +01:00
codec-socks Require Java8 as minimum (#8739) 2019-01-22 08:48:18 +01:00
codec-stomp Remove support for marking reader and writerIndex in ByteBuf to reduce overhead and complexity. (#8636) 2018-12-11 14:00:49 +01:00
codec-xml Correcting Maven Dependencies (#8622) 2018-12-06 09:02:00 +01:00
common fix typo (#8741) 2019-01-22 08:51:54 +01:00
dev-tools Update version number to start working on Netty 5 2018-11-20 15:49:57 +01:00
docker Update to latest JDK8 and JDK11 releases (#8725) 2019-01-17 09:14:42 +01:00
example Make it possible to use a wrapped EventLoop with a Channel (#8677) 2019-01-17 09:17:51 +01:00
handler Require Java8 as minimum (#8739) 2019-01-22 08:48:18 +01:00
handler-proxy Correcting Maven Dependencies (#8622) 2018-12-06 09:02:00 +01:00
license Add the NOTICE of the forked portion of Apache Harmony 2018-01-30 11:22:51 +01:00
microbench Skip execution of Channel*Handler method if annotated with @Skip and just use the next handler in the pipeline. (#8723) 2019-01-22 08:58:58 +01:00
resolver Adding support for whitespace in resource path in tests (#8606) 2018-12-12 10:29:19 +01:00
resolver-dns Only handle NXDOMAIN as failure when nameserver is authoritive or no other nameservers are left. (#8731) 2019-01-18 21:07:11 +01:00
tarball Update version number to start working on Netty 5 2018-11-20 15:49:57 +01:00
testsuite Tighten contract between Channel and EventLoop by require the EventLoop on Channel construction. (#8587) 2019-01-14 20:11:13 +01:00
testsuite-autobahn Upgrade to new version of autobahntestsuite maven plugin. (#8668) 2018-12-17 17:26:00 +01:00
testsuite-http2 Correcting Maven Dependencies (#8622) 2018-12-06 09:02:00 +01:00
testsuite-osgi Update to OpenJDK 12 ea22 (#8618) 2018-12-04 11:59:23 +01:00
testsuite-shading Update version number to start working on Netty 5 2018-11-20 15:49:57 +01:00
transport Skip execution of Channel*Handler method if annotated with @Skip and just use the next handler in the pipeline. (#8723) 2019-01-22 08:58:58 +01:00
transport-native-epoll Fix compile error introduced by incorrect cherry-pick of 7a613c2131 2019-01-21 09:30:52 +01:00
transport-native-kqueue Make it possible to use a wrapped EventLoop with a Channel (#8677) 2019-01-17 09:17:51 +01:00
transport-native-unix-common Fix minor spelling issues in javadocs (#8701) 2019-01-14 07:25:13 +01:00
transport-native-unix-common-tests Correcting Maven Dependencies (#8622) 2018-12-06 09:02:00 +01:00
transport-sctp Tighten contract between Channel and EventLoop by require the EventLoop on Channel construction. (#8587) 2019-01-14 20:11:13 +01:00
.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 Exclude mainframer related files from git 2018-10-14 13:20:18 +02:00
CONTRIBUTING.md Move the pull request guide to the developer guide 2014-03-12 13:13:58 +09:00
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 Add the NOTICE of the forked portion of Apache Harmony 2018-01-30 11:22:51 +01:00
pom.xml Require Java8 as minimum (#8739) 2019-01-22 08:48:18 +01:00
README.md Provide an Automatic-Module-Name for the netty-all artifact fixes #7644 2018-01-27 20:31:16 +01:00
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.