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Trustin Lee d0640a6686 Clean up MpscLinkedQueue, fix its leak, and make it work without Unsafe
Motivation:

MpscLinkedQueue has various issues:
- It does not work without sun.misc.Unsafe.
- Some field names are confusing.
  - Node.tail does not refer to the tail node really.
  - The tail node is the starting point of iteration. I think the tail
    node should be the head node and vice versa to reduce confusion.
- Some important methods are not implemented (e.g. iterator())
- Not serializable
- Potential false cache sharing problem due to lack of padding
- MpscLinkedQueue extends AtomicReference and thus exposes various
  operations that mutates the internal state of the queue directly.

Modifications:

- Use AtomicReferenceFieldUpdater wherever possible so that we do not
  use Unsafe directly. (e.g. use lazySet() instead of putOrderedObject)
- Extend AbstractQueue to implement most operations
- Implement serialization and iterator()
- Rename tail to head and head to tail to reduce confusion.
- Rename Node.tail to Node.next.
- Fix a leak where the references in the removed head are not cleared
  properly.
- Add Node.clearMaybe() method so that the value of the new head node
  is cleared if possible.
- Add some comments for my own educational purposes
- Add padding to the head node
  - Add FullyPaddedReference and RightPaddedReference for future reuse
- Make MpscLinkedQueue package-local so that a user cannot access the
  dangerous yet public operations exposed by the superclass.
  - MpscLinkedQueue.Node becomes MpscLinkedQueueNode, a top level class

Result:

- It's more like a drop-in replacement of ConcurrentLinkedQueue for the
  MPSC case.
- Works without sun.misc.Unsafe
- Code potentially easier to understand
- Fixed leak (related: #2372)
2014-06-04 03:23:44 +09:00
all Use a forked exec-maven-plugin instead of maven-antrun-plugin 2014-05-23 20:03:14 +09:00
buffer Use Java 5 foreach for arrays for brevity at no cost 2014-06-02 18:25:49 +09:00
codec [#2525] Use VoidChannelPromise in MessageToMessageEncoder when possible 2014-06-01 19:24:30 +02:00
codec-http codec-http: Document the semantics of HttpResponseStatus equality and comparison 2014-05-30 07:52:58 +02:00
codec-http2 Merge branch 'master' of https://github.com/netty/netty into http2 2014-05-21 07:44:18 -07:00
codec-memcache Synchronized between 4.1 and master 2014-04-25 00:36:01 +09:00
codec-socks Clean up the examples 2014-05-23 16:58:47 +09:00
common Clean up MpscLinkedQueue, fix its leak, and make it work without Unsafe 2014-06-04 03:23:44 +09:00
example OkResponseHandler should return a FullHttpResponse. 2014-06-03 09:21:03 +02:00
handler [#2494] Fix data curruption by ChannelTrafficShapingHandler 2014-06-03 08:36:14 +02:00
license Preparation for porting OpenSSL support in 3.10 2014-05-17 20:01:09 +09:00
microbench More realistic ByteBuf allocation benchmark 2014-05-29 19:50:43 +09:00
tarball [maven-release-plugin] prepare for next development iteration 2013-12-22 22:06:15 +09:00
testsuite Add an OpenSslEngine and the universal API for enabling SSL 2014-05-18 02:33:26 +09:00
transport ChannelFlushPromiseNotifier should allow long value for pendingDataSize 2014-06-03 17:39:41 +02:00
transport-native-epoll Add an OpenSslEngine and the universal API for enabling SSL 2014-05-18 02:33:26 +09:00
transport-rxtx Resurrect channel deregistration and constructor changes 2014-04-24 20:54:50 +09:00
transport-sctp Synchronized between 4.1 and master again (part 2) 2014-04-25 15:07:12 +09:00
transport-udt Synchronized between 4.1 and master again (part 2) 2014-04-25 15:07:12 +09:00
.fbfilter.xml Update license headers 2012-06-04 13:31:44 -07:00
.fbprefs Updated Find Bugs configuration 2009-03-04 10:33:09 +00:00
.gitignore Add JVM crash logs to .gitignore 2014-05-18 21:34:51 +09:00
.travis.yml Travis CI branch whitelisting 2013-03-11 09:55:43 +09:00
CONTRIBUTING.md Move the pull request guide to the developer guide 2014-03-12 13:17:58 +09:00
LICENSE.txt Relicensed to Apache License v2 2009-08-28 07:15:49 +00:00
NOTICE.txt Preparation for porting OpenSSL support in 3.10 2014-05-17 20:01:09 +09:00
pom.xml Require Maven 3.1.1 or above 2014-06-04 03:12:28 +09:00
README.md Synchronized between 4.1 and master (part 3) 2014-04-25 16:17:16 +09:00
run-example.sh Use a forked exec-maven-plugin instead of maven-antrun-plugin 2014-05-23 20:03:14 +09:00

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

The 'master' branch is where the development of the latest major version lives on. The development of all other 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.