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Nick Hill b2eaab092b Optimize Hpack and AsciiString hashcode and equals (#8902)
Motivation:

While looking at hpack header-processing hotspots I noticed some low
level too-big-to-inline methods which can be shrunk.

Modifications:

Reduce bytecode size and/or runtime operations used for the following
methods:

PlatformDependent0.equals(byte[], ...)
PlatformDependent0.equalsConstantTime(byte[], ...)
PlatformDependent0.hashCodeAscii(byte[],int,int)
PlatformDependent.hashCodeAscii(CharSequence)

Result:

Existing benchmarks show decent improvement

Before

Benchmark                     (size)   Mode  Cnt         Score         Error  Units
HpackUtilBenchmark.newEquals   SMALL  thrpt    5  17200229.374 ± 1701239.198  ops/s
HpackUtilBenchmark.newEquals  MEDIUM  thrpt    5   3386061.629 ±   72264.685  ops/s
HpackUtilBenchmark.newEquals   LARGE  thrpt    5    507579.209 ±   65883.951  ops/s

After

Benchmark                     (size)   Mode  Cnt         Score         Error  Units
HpackUtilBenchmark.newEquals   SMALL  thrpt    5  29221527.058 ± 4805825.836  ops/s
HpackUtilBenchmark.newEquals  MEDIUM  thrpt    5   6556251.645 ±  466115.199  ops/s
HpackUtilBenchmark.newEquals   LARGE  thrpt    5    879828.889 ±  148136.641  ops/s

Before

Benchmark                          (size)  Mode  Cnt     Score     Error  Units
PlatformDepBench.unsafeBytesEqual       4  avgt   10     4.263 ±   0.110  ns/op
PlatformDepBench.unsafeBytesEqual      10  avgt   10     5.206 ±   0.133  ns/op
PlatformDepBench.unsafeBytesEqual      50  avgt   10     8.160 ±   0.320  ns/op
PlatformDepBench.unsafeBytesEqual     100  avgt   10    13.810 ±   0.751  ns/op
PlatformDepBench.unsafeBytesEqual    1000  avgt   10    89.077 ±   7.275  ns/op
PlatformDepBench.unsafeBytesEqual   10000  avgt   10   773.940 ±  24.579  ns/op
PlatformDepBench.unsafeBytesEqual  100000  avgt   10  7546.807 ± 110.395  ns/op

After

Benchmark                          (size)  Mode  Cnt     Score     Error  Units
PlatformDepBench.unsafeBytesEqual       4  avgt   10     3.337 ±   0.087  ns/op
PlatformDepBench.unsafeBytesEqual      10  avgt   10     4.286 ±   0.194  ns/op
PlatformDepBench.unsafeBytesEqual      50  avgt   10     7.817 ±   0.123  ns/op
PlatformDepBench.unsafeBytesEqual     100  avgt   10    11.260 ±   0.412  ns/op
PlatformDepBench.unsafeBytesEqual    1000  avgt   10    84.255 ±   2.596  ns/op
PlatformDepBench.unsafeBytesEqual   10000  avgt   10   591.892 ±   5.136  ns/op
PlatformDepBench.unsafeBytesEqual  100000  avgt   10  6978.859 ± 285.043  ns/op
2019-03-08 06:55:11 +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 05:43:06 +01:00
all Use maven plugin to prevent API/ABI breakage as part of build process (#8904) 2019-03-01 19:42:29 +01:00
bom [maven-release-plugin] prepare for next development iteration 2019-01-21 12:26:44 +00:00
buffer Adjust tests to be able to build / test when using IBM J9 / OpenJ9 (#8900) 2019-03-01 06:47:56 +01:00
codec Tighten up contract of PromiseCombiner and so make it more safe to use (#8886) 2019-02-28 20:32:04 +01:00
codec-dns use checkPositive/checkPositiveOrZero (#8835) 2019-02-04 16:01:49 +01:00
codec-haproxy [maven-release-plugin] prepare for next development iteration 2019-01-21 12:26:44 +00:00
codec-http HttpContentDecoder must continue read when it did not produce any mes… (#8922) 2019-03-07 10:31:51 +01:00
codec-http2 Tighten up contract of PromiseCombiner and so make it more safe to use (#8886) 2019-02-28 20:32:04 +01:00
codec-memcache use checkPositive/checkPositiveOrZero (#8835) 2019-02-04 16:01:49 +01:00
codec-mqtt [maven-release-plugin] prepare for next development iteration 2019-01-21 12:26:44 +00:00
codec-redis [maven-release-plugin] prepare for next development iteration 2019-01-21 12:26:44 +00:00
codec-smtp [maven-release-plugin] prepare for next development iteration 2019-01-21 12:26:44 +00:00
codec-socks [maven-release-plugin] prepare for next development iteration 2019-01-21 12:26:44 +00:00
codec-stomp use checkPositive/checkPositiveOrZero (#8835) 2019-02-04 16:01:49 +01:00
codec-xml Update to new checkstyle plugin (#8777) (#8780) 2019-01-25 11:58:42 +01:00
common Optimize Hpack and AsciiString hashcode and equals (#8902) 2019-03-08 06:55:11 +01:00
dev-tools [maven-release-plugin] prepare for next development iteration 2019-01-21 12:26:44 +00:00
docker Add docker-compose config to run build with OpenJ9 JVM (#8903) 2019-03-01 11:28:51 +01:00
example Carefully manage Keep-Alive connections in HttpStaticFileServer (#8914) 2019-03-06 15:51:58 +01:00
handler ReferenceCountedOpenSslEngines SSLSession must provide local certific… (#8918) 2019-03-08 06:47:28 +01:00
handler-proxy Use maven plugin to prevent API/ABI breakage as part of build process (#8904) 2019-03-01 19:42:29 +01:00
license Add the NOTICE of the forked portion of Apache Harmony 2018-01-30 11:22:51 +01:00
microbench Use maven plugin to prevent API/ABI breakage as part of build process (#8904) 2019-03-01 19:42:29 +01:00
resolver [maven-release-plugin] prepare for next development iteration 2019-01-21 12:26:44 +00:00
resolver-dns [maven-release-plugin] prepare for next development iteration 2019-01-21 12:26:44 +00:00
tarball [maven-release-plugin] prepare for next development iteration 2019-01-21 12:26:44 +00:00
testsuite Use maven plugin to prevent API/ABI breakage as part of build process (#8904) 2019-03-01 19:42:29 +01:00
testsuite-autobahn Use maven plugin to prevent API/ABI breakage as part of build process (#8904) 2019-03-01 19:42:29 +01:00
testsuite-http2 Use maven plugin to prevent API/ABI breakage as part of build process (#8904) 2019-03-01 19:42:29 +01:00
testsuite-osgi Use maven plugin to prevent API/ABI breakage as part of build process (#8904) 2019-03-01 19:42:29 +01:00
testsuite-shading Use maven plugin to prevent API/ABI breakage as part of build process (#8904) 2019-03-01 19:42:29 +01:00
transport Tighten up contract of PromiseCombiner and so make it more safe to use (#8886) 2019-02-28 20:32:04 +01:00
transport-native-epoll DefaultFileRegion.transferTo with invalid count may cause busy-spin (#8885) 2019-02-26 11:08:09 +01:00
transport-native-kqueue DefaultFileRegion.transferTo with invalid count may cause busy-spin (#8885) 2019-02-26 11:08:09 +01:00
transport-native-unix-common Do not use GetPrimitiveArrayCritical(...) due multiple not-fixed bugs… (#8921) 2019-03-07 10:30:55 +01:00
transport-native-unix-common-tests [maven-release-plugin] prepare for next development iteration 2019-01-21 12:26:44 +00:00
transport-rxtx [maven-release-plugin] prepare for next development iteration 2019-01-21 12:26:44 +00:00
transport-sctp use checkPositive/checkPositiveOrZero (#8803) 2019-01-31 09:07:14 +01:00
transport-udt [maven-release-plugin] prepare for next development iteration 2019-01-21 12:26:44 +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 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 Support delegating task when using ReferenceCountedOpenSslEngine. (#8859) 2019-03-05 09:17:18 +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.