Commit Graph

338 Commits

Author SHA1 Message Date
Trustin Lee
87007d4eb8 Fix another memory leak in AbstractByteBufTest 2013-04-23 13:46:34 +09:00
Norman Maurer
9a5f45a0c1 [#1297] Make sure ResourceLeakDetector.open(...) is only used after constructing was successful 2013-04-22 10:07:22 +02:00
Norman Maurer
ab685de7a3 [#1273] Fix resource leaks in test 2013-04-22 09:47:44 +02:00
Trustin Lee
18dca2a8a4 Fix checkstyle 2013-04-19 04:37:51 +09:00
Trustin Lee
8884e311f1 Fix a bug where DefaultCompositeByteBuf.nioBuffers() fails when its component's nioBufferCount() is greater than 1
- Fixes #1267
2013-04-19 04:35:44 +09:00
Trustin Lee
9e890f0ab8 Ensure to release the component when it's removed from CompositeByteBuf / Add tests for reference counting of CompositeByteBuf 2013-04-18 16:40:22 +09:00
Trustin Lee
5bfb408b7d Add setRefCnt(int) method to AbstractReferenceCounted(ByteBuf)
- Fixes #1265
2013-04-11 19:36:27 +09:00
Norman Maurer
3b8673733e [#1262] Respect adjustment when using SlicedByteBuf.nioBuffers() 2013-04-10 14:19:03 +02:00
Norman Maurer
d34daebeca [#1238] Correctly log the content of the MessageBuf and not depend on MessageBuf.toString()
Add an extra static method to BufUtil which will convert the content of any MessaBuf implementation to a String
2013-04-08 09:45:00 +02:00
Andrei Pozolotin
a3e760a003 fix #1234 - duplicate package-info.java errors in eclipse requires release of netty-build v 19 and netty-parent update. 2013-04-05 05:38:05 +09:00
Trustin Lee
0ac31ae846 Make Unpooled*ByteBuf public so that ByteBufAllocator implementor can extend it 2013-04-04 17:26:14 +09:00
Norman Maurer
94ef7dc1b9 Optimize to minimize volatile reads to access next buffer in codec framework 2013-04-03 18:03:55 +02:00
Trustin Lee
c3559ddbda Fix misleading example in ByteBuf 2013-04-03 22:18:38 +09:00
Trustin Lee
baf9ecfe7b Fix IndexOutOfBoundsException raised when numHeapArenas and numDirectArenas differ
- Fixes #1227
2013-04-03 22:15:34 +09:00
Trustin Lee
8fef511390 Fix typo 2013-04-03 22:08:43 +09:00
Norman Maurer
af4b71a00e Remove special handling of Object[] in codec framework (a.k.a unfolding)
- Fixes #1229
- Primarily written by @normanmaurer and revised by @trustin

This commit removes the notion of unfolding from the codec framework
completely.  Unfolding was introduced in Netty 3.x to work around the
shortcoming of the codec framework where encode() and decode() did not
allow generating multiple messages.

Such a shortcoming can be fixed by changing the signature of encode()
and decode() instead of introducing an obscure workaround like
unfolding.  Therefore, we changed the signature of them in 4.0.

The change is simple, but backward-incompatible.  encode() and decode()
do not return anything.  Instead, the codec framework will pass a
MessageBuf<Object> so encode() and decode() can add the generated
messages into the MessageBuf.
2013-04-03 21:44:54 +09:00
Trustin Lee
2ffa083d3c Allow overriding the default allocator properties and log them / Prettier log 2013-04-03 12:08:01 +09:00
Prajwal Tuladhar
05850da863 enable checkstyle for test source directory and fix checkstyle errors 2013-03-30 13:18:57 +01:00
Adam Vandenberg
8e23ab6886 Fix typo in BufType javadoc 2013-03-29 21:47:55 +09:00
Norman Maurer
5a7f049fe2 [#1202] Fix javadoc 2013-03-28 10:01:26 +01:00
Norman Maurer
71727e42de [#1210] Allow to use derived buffers with DefaultBufferHolder and so fix broken SpdySessionHandler 2013-03-27 07:30:12 +01:00
Norman Maurer
f53db96a3e [#1198] Fix references to ChannelBuffer and ChannelBuffers 2013-03-25 11:06:58 +01:00
Norman Maurer
4eb0172251 [#1196] Make it clear that addComponent(..) of CompositeByteBuf does NOT increase the writerIndex 2013-03-25 10:58:50 +01:00
Norman Maurer
59012390f6 Fix version numbering 2013-03-25 08:01:11 +01:00
Norman Maurer
f136fb3673 [#1197] Add Unpooled.unreleasableBuffer(...) to create a unreleasable view on a ByteBuf) 2013-03-23 11:25:01 +01:00
Norman Maurer
c71dc9d4b6 [#1195] Fix Unpooled.wrappedBuffer(..) with non-direct read-only ByteBuffer 2013-03-23 10:57:07 +01:00
Norman Maurer
7d7b676eeb [maven-release-plugin] prepare for next development iteration 2013-03-22 15:20:35 +01:00
Norman Maurer
60fc7dac4d [maven-release-plugin] prepare release netty-4.0.0.CR1 2013-03-22 15:20:11 +01:00
Trustin Lee
28576aa41e Fix incorrect exception message
- Thanks @hepin1989
2013-03-22 16:07:10 +09:00
Trustin Lee
1bad0b48cf Fix memory leak in the test 2013-03-22 12:37:57 +09:00
Trustin Lee
6869a2bd23 Fix memory leak in AbstractCompositeByteBufTest 2013-03-22 09:01:28 +09:00
Norman Maurer
52c4e042d6 Correctly handle read-only direct ByteBuffer when wrap them 2013-03-22 06:49:57 +09:00
Trustin Lee
2a87950784 [maven-release-plugin] prepare for next development iteration 2013-03-16 18:41:36 +09:00
Trustin Lee
adfb29330b [maven-release-plugin] prepare release netty-4.0.0.Beta3 2013-03-16 18:40:59 +09:00
Trustin Lee
5fe2e7fc9d Fix more memory leaks in buffer tests 2013-03-14 17:21:31 +09:00
Trustin Lee
0f351d2c47 Fix memory leak in DefaultCompositeByteBuf when a component is another CompositeByteBuf / Allow retain() and release() on a derived buffer 2013-03-14 16:37:20 +09:00
Trustin Lee
60d9984db1 Fix memory leak in DefaultCompositeByteBuf when a component is another CompositeByteBuf 2013-03-14 16:06:38 +09:00
Trustin Lee
d2b137649d Fix more memory leaks in the buffer tests 2013-03-14 15:25:22 +09:00
Trustin Lee
b86d3d692a Fix a bug where AbstractByteBuf.order() doesn't return a swapped buffer if capacity is 0.
- Fixes #1152
2013-03-14 06:58:14 +09:00
Trustin Lee
5830875b42 Fix a memory leak in AbstractCompositeByteBufTest
- Fixed #1147
2013-03-13 15:09:26 +09:00
Trustin Lee
94a9096be5 Fix a memory leak in AbstractCompositeByteBufTest 2013-03-12 17:57:23 +09:00
Trustin Lee
b271774c90 Fix memory leak in UnpooledTest
- nothing critical. It's a test that leaks.  Not CompositeByteBuf implementation.
2013-03-12 16:49:14 +09:00
Trustin Lee
e1dd149ca6 Reschedule the streaming API for later
- Will release as a part of http_next
2013-03-12 13:08:10 +09:00
Trustin Lee
8f5eaaa740 Make StreamTest finish sooner to make CI happy 2013-03-11 09:46:36 +09:00
Trustin Lee
5d65bbc0a9 Add package-info.java for the Stream API / Print maven version on travis CI 2013-03-11 09:09:46 +09:00
Trustin Lee
32efba34d8 Initial implementation of the Streaming API
This pull request provides a framework for exchanging a very large
stream between handlers, typically between a decoder and an inbound
handler (or between a handler that writes a message and an encoder that
encodes that message).

For example, an HTTP decoder, previously, generates multiple
micro-messages to decode an HTTP message (i.e. HttpRequest +
HttpChunks). With the streaming API, The HTTP decoder can simply
generate a single HTTP message whose content is a Stream. And then the
inbound handler can consume the Stream via the buffer you created when
you begin to read the stream. If you create a buffer whose capacity is
bounded, you can handle a very large stream without allocating a lot of
memory. If you just want to wait until the whole content is ready, you
can also do that with an unbounded buffer.

The streaming API also supports a limited form of communication between
a producer (i.e. decoder) and a consumer. A producer can abort the
stream if the stream is not valid anymore. A consumer can choose to
reject or discard the stream, where rejection is for unrecoverable
failure and discard is for recoverable failure.

P.S. Special thanks to @jpinner for the initial input.
2013-03-11 08:57:17 +09:00
Norman Maurer
0a1bc86569 Javadocs cleanup / added 2013-03-10 21:07:19 +01:00
Norman Maurer
0ac5fd9f18 Let BufUtil.retain(...) return the given object 2013-03-10 19:50:26 +01:00
Trustin Lee
63116239ac Always use EmptyByteBuf when a user attempts to construct a buffer with 0 maxCapacity / Make EmptyByteBuf remember the allocator it came from / Optimize EmptyByteBuf a little bit 2013-03-08 11:03:11 +09:00
Trustin Lee
096e4c95ef Fix checkstyle 2013-03-08 10:39:52 +09:00
Trustin Lee
12f1d96914 Relaxed memory access constraint of ReferenceCounted.refCnt() for potentially better performance / More precise reference counting for MessageBuf 2013-03-08 10:32:20 +09:00
Trustin Lee
303f83043b Fix checkstyle 2013-03-06 18:23:08 +09:00
Trustin Lee
88df53ec1a Fix infinite recursion when transferring data between different type of buffers / Add ByteBuf.hasMemoryAddress/memoryAddress()
- Fixes: #1109 and #1110
2013-03-06 18:22:16 +09:00
Trustin Lee
3d6d9f394d Fix checkstyle 2013-03-06 17:10:26 +09:00
Trustin Lee
81ce0555e6 Add UnpooledUnsafeDirectByteBuf and use it when low-level access is available
- Remove PooledUnsafeDirectByteBuf.setMedium() which is redundant
- Fix constructor visibility
2013-03-06 16:01:46 +09:00
Trustin Lee
6c3d5ed907 Use _set* in AbstractByteBuf.write*() 2013-03-06 14:56:27 +09:00
Trustin Lee
1c1570ffc4 Make field access via ByteBuf.read/write*() faster by avoiding unnecessary boundary checks
- also disabled a time consuming test that is actually a regression test
2013-03-06 10:32:29 +09:00
Trustin Lee
5f2c2cdc9b Fix a bug in PoolArena and PoolSubpage where subpage pools are not updated correctly
- Make PoolSubpage a linked list node in the pool
- Now that a subpage is added to and removed from the pool correctly, allocating a subpage from the pool became vastly simpler.
2013-03-05 23:55:41 +09:00
Trustin Lee
4cb023f190 Add more variants of ByteBufAllocator.ioBuffer() / Update Javadoc 2013-03-05 17:59:31 +09:00
Trustin Lee
8d88acb4a7 Change ByteBufAllocator.buffer() to allocate a direct buffer only when the platform can handle a direct buffer reliably
- Rename directbyDefault to preferDirect
 - Add a system property 'io.netty.prederDirect' to allow a user from changing the preference on launch-time
 - Merge UnpooledByteBufAllocator.DEFAULT_BY_* to DEFAULT
2013-03-05 17:55:24 +09:00
Trustin Lee
307e6c47d8 Make hasUnsafe() return true only when all necessary low level operations are available for reliable direct buffer access 2013-03-05 17:25:54 +09:00
Trustin Lee
7e17f71b30 Make PlatformDependent work with the platforms without unaligned access support 2013-03-05 14:27:52 +09:00
Trustin Lee
d4d01ba52c Optimize SlicedByteBuf a little bit 2013-02-27 15:19:25 -08:00
Trustin Lee
49aa907bd0 [maven-release-plugin] prepare for next development iteration 2013-02-26 16:55:07 -08:00
Trustin Lee
5026c2f359 [maven-release-plugin] prepare release netty-4.0.0.Beta2 2013-02-26 16:54:53 -08:00
Trustin Lee
a9a8d5d8c2 Clean-up 2013-02-21 14:17:04 -08:00
Norman Maurer
74738fbd08 [#1061] Add workaround to not use PooledUnsafeDirectByteBuf when running on latest OpenJDK6 because of missing Unsafe method 2013-02-19 12:21:08 +01:00
Norman Maurer
4ed5b07e4e [#1060] Fix bug in CompositeByteBuf which let the buffer expand in a incorrect way and so result in corrupted data 2013-02-19 09:43:31 +01:00
Norman Maurer
1c6ed9b2ce Add javadocs 2013-02-17 20:12:48 +01:00
Trustin Lee
d68a04a879 [maven-release-plugin] prepare for next development iteration 2013-02-14 12:56:24 -08:00
Trustin Lee
59e638f8f5 [maven-release-plugin] prepare release netty-4.0.0.Beta1 2013-02-14 12:56:15 -08:00
Trustin Lee
1011227b88 Remove apiviz tags - we are focusing on user guide instead and putting diagrams there 2013-02-14 12:09:16 -08:00
Norman Maurer
7c002504a1 [#1051] Increment by the correct value 2013-02-14 14:28:47 +01:00
Norman Maurer
5370573400 Change ReferenceCounted.retain* to return itself and so allow method chaining 2013-02-14 07:39:44 +01:00
Trustin Lee
a1540a49d3 More safety in DefaultMessageBuf 2013-02-13 14:58:21 -08:00
Norman Maurer
a8216e7ce0 Fix possible NPE 2013-02-13 09:52:07 +01:00
Trustin Lee
4aacf50758 Prettify APIviz diagrams / Remove an empty package 2013-02-11 18:33:15 +09:00
Trustin Lee
aca0d5fa68 Make CompositeyteBuf and MessageBuf call release() on its elements when it is deallocated 2013-02-11 17:19:53 +09:00
Trustin Lee
bf0bfe9a69 Fix inspector warnings 2013-02-11 16:52:43 +09:00
Trustin Lee
0e341c9d72 Fix covariant return types in ChannelConfig interfaces for method chaining
- Does it really worth doing this? I'm tempted to remove support for method chaining for ChannelConfig.
2013-02-11 15:08:51 +09:00
Trustin Lee
4f6d05365a Fix a race condition in reference counter implementation / Reference count never goes below 0 2013-02-10 14:22:14 +09:00
Trustin Lee
b9996908b1 Implement reference counting
- Related: #1029
- Replace Freeable with ReferenceCounted
- Add AbstractReferenceCounted
- Add AbstractReferenceCountedByteBuf
- Add AbstractDerivedByteBuf
- Add EmptyByteBuf
2013-02-10 13:10:09 +09:00
Trustin Lee
43af599d52 Faster memory copy between direct buffer and byte array (part 2) 2013-02-09 02:09:37 +09:00
Trustin Lee
9a676bc7d5 Faster memory copy between direct buffer and byte array 2013-02-09 01:55:01 +09:00
Trustin Lee
affd514b8c Rename ByteBufUtil to BufUtil and move ChannelHandlerUtil.freeMessage() there / Remove ChannelHandlerUtil 2013-02-08 23:23:26 +09:00
Trustin Lee
44ea0a116f Replace ChannelHandlerUtil.unfoldAndAdd() with MessageBuf.unfoldAndAdd() / Remove unused methods in ChannelHandlerUtil 2013-02-08 23:07:20 +09:00
Trustin Lee
d4742bbe16 Clean up abstract ChannelHandler impls / Remove ChannelHandlerContext.hasNext*()
- Rename ChannelHandlerAdapter to ChannelDuplexHandler
- Add ChannelHandlerAdapter that implements only ChannelHandler
- Rename CombinedChannelHandler to CombinedChannelDuplexHandler and
  improve runtime validation
- Remove ChannelInbound/OutboundHandlerAdapter which are not useful
- Make ChannelOutboundByteHandlerAdapter similar to
  ChannelInboundByteHandlerAdapter
- Make the tail and head handler of DefaultChannelPipeline accept both
  bytes and messages.  ChannelHandlerContext.hasNext*() were removed
  because they always return true now.
- Removed various unnecessary null checks.
- Correct method/field names:
  inboundBufferSuspended -> channelReadSuspended
2013-02-07 23:47:45 +09:00
Trustin Lee
7eed272e57 Add FilteredMessageBuf 2013-02-07 23:37:04 +09:00
Norman Maurer
fd75615d7a [#870] Convert all modules into osgi bundles 2013-02-06 07:57:11 +01:00
Trustin Lee
2ec932798f Replace .readable() and .writable() to .isReadable() and .isWritable() 2013-01-31 18:24:33 +01:00
Trustin Lee
42c65cca3a Make MessageBuf bounded
- Move common methods from ByteBuf to Buf
- Rename ensureWritableBytes() to ensureWritable()
- Rename readable() to isReadable()
- Rename writable() to isWritable()
- Add isReadable(int) and isWritable(int)
- Add AbstractMessageBuf
- Rewrite DefaultMessageBuf and QueueBackedMessageBuf
  - based on Josh Bloch's public domain ArrayDeque impl
2013-01-31 18:11:06 +01:00
Norman Maurer
ee9f30a2b9 *ChannelBuffer* -> *ByteBuf* and ChannelBuffersTest -> UnpooledTest 2013-01-21 21:02:25 +01:00
Courtney Robinson
7b6cbdbb1e [#964] ByteBuf.readLine() must return null when no more data is available in ByteBuf 2013-01-21 20:56:00 +01:00
Trustin Lee
ba8c8171fa Fix leaks in buffer tests 2013-01-18 13:49:17 +09:00
Trustin Lee
b5c87b0f9c Fix failing tests 2013-01-18 13:34:00 +09:00
Trustin Lee
d0afe6cad0 Consistent exception messages 2013-01-18 13:10:54 +09:00
Trustin Lee
ad15155f04 Ensure cascaded derivation of a buffer does not result in an infinitely nested buffer. 2013-01-17 13:55:48 +09:00
Trustin Lee
d806e3bf81 SwappedByteBuf.unwrap() should return null
Fixes #945.  For swapped wrapped buffers, it should not return null.
2013-01-17 12:05:43 +09:00
Trustin Lee
34820511ff Second HTTP overhaul
- Rename message types for clarity
  - HttpMessage -> FullHttpMessage
  - HttpHeader -> HttpMessage
  - HttpRequest -> FullHttpRequest
  - HttpResponse -> FulllHttpResponse
  - HttpRequestHeader -> HttpRequest
  - HttpResponseHeader -> HttpResponse
- HttpContent now extends ByteBufHolder; no more content() method
- Make HttpHeaders abstract, make its header access methods public, and
  add DefaultHttpHeaders
- Header accessor methods in HttpMessage and LastHttpContent are
  replaced with HttpMessage.headers() and
  LastHttpContent.trailingHeaders(). Both methods return HttpHeaders.
- Remove setters wherever possible and remove 'get' prefix
- Instead of calling setContent(), a user can either specify the content
  when constructing a message or write content into the buffer.
  (e.g. m.content().writeBytes(...))
- Overall cleanup & fixes
2013-01-16 23:46:02 +09:00
Trustin Lee
337f5bbb8e Automatic diagnosis of resource leaks
Now that we are going to use buffer pooling by default, it is obvious
that a user will forget to call .free() and report memory leak. In this
case, we should have a tool to determine if it is a bug in our allocator
implementation or in the user's code.

This pull request adds a system property flag called
'io.netty.resourceLeakDetection'. If set, when a user forgets to call
.free(), the ResourceLeakDetector will detect it and log a message with
detailed stack trace to tell where the leaked buffer has been allocated.

Because obtaining stack trace is an expensive operation, I used sampling
technique. Allocation is recorded only for every 113th allocation. I
chose 113 because it's a prime number.

In production, a user might not want to enable this option due to
potential performance impact. If a user does not specify the
'-Dio.netty.resourceLeakDetection' option leak detection is disabled.

Even if the leak detection is enabled, the overhead should be less than
5% because only ~1% of allocations are monitored.

I also replaced SharedResourceMisuseDetector with ResourceLeakDetector.
2013-01-15 14:15:27 +09:00
Trustin Lee
04bae9bceb Use sun.misc.Unsafe to access a direct ByteBuffer
- Add PooledUnsafeDirectByteBuf, a variant of PooledDirectByteBuf, which
  accesses its underlying direct ByteBuffer using sun.misc.Unsafe.
- To decouple Netty from sun.misc.*, sun.misc.Unsafe is accessed via
  PlatformDependent.
- This change solely introduces about 8+% improvement in direct memory
  access according to the tests conducted as described in #918
2013-01-11 16:25:12 +09:00
Norman Maurer
e564157381 Fix one checkstyle and one compile error caused by the last commit 2013-01-11 07:45:22 +01:00
Norman Maurer
75b2dd592a Merge branch 'master' of github.com:netty/netty 2013-01-11 07:33:54 +01:00
Trustin Lee
64ae8b6a37 Replace and merge DetectionUtil and DirectByteBufUtil into PlatformDependent and PlatformDependent0
PlatformDependent delegates the operations requires sun.misc.* to PlatformDependent0 to avoid runtime errors due to missing sun.misc.* classes.
2013-01-11 14:03:27 +09:00
Trustin Lee
896bbb67b6 Use sun.misc.Unsafe to access a direct buffer if possible 2013-01-10 21:30:11 +01:00
Norman Maurer
5b5b39a606 [#916] Only access Cleaner if it is really present to prevent errors on android 2013-01-10 20:03:54 +01:00
Trustin Lee
5bd8b41a58 Use Number.reverseBytes() instead of custom impl 2013-01-10 18:47:21 +09:00
Trustin Lee
340da3e97b Fix infinite recursion 2013-01-10 18:43:20 +09:00
Trustin Lee
eb337ff5a7 Fix various inspection warnings 2013-01-10 15:23:58 +09:00
Trustin Lee
8f7fba2d39 Optimize AbstractByteBuf.adjustMarkers() 2013-01-04 23:51:11 +09:00
Norman Maurer
364b7d1430 Make sure the Unpooled.EMTPY_BUFFER can not be freed and the capacity can not be changed 2013-01-03 22:49:25 +01:00
Norman Maurer
37a3f2e3b8 [#887] [#866] [#883] Add unified interface for Message oriented protocols and also use direct buffers for them 2013-01-03 18:15:53 +01:00
Norman Maurer
8a7bc2c606 Add a lot of javadocs to make usage more clear 2012-12-21 22:22:40 +01:00
Trustin Lee
67da6e4bf9 Remove the notion of ByteBufAllocator.bufferMaxCapacity()
- Allocate the unpooled memory if the requested capacity is greater then the chunkSize
- Fixes #834
2012-12-19 17:35:32 +09:00
Trustin Lee
0e017db89a Return the new buffer's capacity is same with the requested capacity
- Rename capacity variables to reqCapacity or normCapacity to distinguish if its the request capacity or the normalized capacity
- Do not reallocate on ByteBuf.capacity(int) if reallocation is unnecessary; just update the index range.
- Revert the workaround in DefaultChannelHandlerContext
2012-12-19 16:50:05 +09:00
Trustin Lee
a8f5efdb26 Add proper boundary / freeness check on ByteBuf impls
- Fixes #827
2012-12-17 18:27:30 +09:00
Trustin Lee
ca93b624ff Add IllegalBufferAccessException and checks on MessageBuf impls
- Related: #827
2012-12-17 18:03:31 +09:00
Trustin Lee
def12a171c Rename ChannelBuf to Buf and ChannelBufType to BufType
- Fixes #825
2012-12-17 17:43:45 +09:00
Trustin Lee
03e68482bb Remove ChannelBuf/ByteBuf.Unsafe
- Fixes #826
Unsafe.isFreed(), free(), suspend/resumeIntermediaryAllocations() are not that dangerous. internalNioBuffer() and internalNioBuffers() are dangerous but it seems like nobody is using it even inside Netty. Removing those two methods also removes the necessity to keep Unsafe interface at all.
2012-12-17 17:41:21 +09:00
Trustin Lee
33134b1343 Ensure PooledByteBuf.init() is not called with null memory 2012-12-17 16:02:21 +09:00
Trustin Lee
5ffb495746 Do not allow suspendIntermediaryDeallocations() after free() 2012-12-14 18:39:00 +09:00
Trustin Lee
5a4a59406b Merge ByteBuf.hasNioBuffer() and hasNioBuffers()
- Fixes #797
2012-12-14 12:20:33 +09:00
Trustin Lee
8e1a6c6cf5 Add ByteBuf.maxWritableBytes()
- Fixes #806
2012-12-14 11:49:01 +09:00
Trustin Lee
ad10518fca Fix the incorrect snapshot version number 2012-12-13 22:49:31 +09:00
Trustin Lee
b47fc77522 Add PooledByteBufAllocator + microbenchmark module
This pull request introduces the new default ByteBufAllocator implementation based on jemalloc, with a some differences:

* Minimum possible buffer capacity is 16 (jemalloc: 2)
* Uses binary heap with random branching (jemalloc: red-black tree)
* No thread-local cache yet (jemalloc has thread-local cache)
* Default page size is 8 KiB (jemalloc: 4 KiB)
* Default chunk size is 16 MiB (jemalloc: 2 MiB)
* Cannot allocate a buffer bigger than the chunk size (jemalloc: possible) because we don't have control over memory layout in Java. A user can work around this issue by creating a composite buffer, but it's not always a feasible option. Although 16 MiB is a pretty big default, a user's handler might need to deal with the bounded buffers when the user wants to deal with a large message.

Also, to ensure the new allocator performs good enough, I wrote a microbenchmark for it and made it a dedicated Maven module. It uses Google's Caliper framework to run and publish the test result (example)

Miscellaneous changes:

* Made some ByteBuf implementations public so that those who implements a new allocator can make use of them.
* Added ByteBufAllocator.compositeBuffer() and its variants.
* ByteBufAllocator.ioBuffer() creates a buffer with 0 capacity.
2012-12-13 22:35:06 +09:00
Trustin Lee
51e6519b67 Replace UnsafeByteBuf with ByteBuf.unsafe() again
* UnsafeByteBuf is gone. I added ByteBuf.unsafe() back.
* To avoid extra instantiation, all ByteBuf implementations implement the ByteBuf.Unsafe interface.
* To hide this implementation detail, all ByteBuf implementations are package-private.
* AbstractByteBuf and SwappedByteBuf are public and they do not implement ByteBuf.Unsafe because they don't need to.
* unwrap() is not an unsafe operation anymore.
* ChannelBuf also has unsafe() and Unsafe. ByteBuf.Unsafe extends ChannelBuf.unsafe(). ChannelBuf.unsafe() provides free() operation so that a user does not need to down-cast the buffer in freeInbound/OutboundBuffer().
2012-12-05 19:28:56 +09:00
Norman Maurer
85c570505b [maven-release-plugin] prepare for next development iteration 2012-12-03 20:34:05 +01:00
Norman Maurer
17d77ed160 [maven-release-plugin] prepare release netty-4.0.0.Alpha8 2012-12-03 20:33:49 +01:00
Trustin Lee
33c0c89fef Remove unnecessary empty lines 2012-12-03 19:58:13 +09:00
Trustin Lee
e45ab1d182 Fix a checkstyle error 2012-12-02 22:03:11 +09:00
Trustin Lee
5f9090a7f0 Fix invalid memory access in AIO writes
To perform writes in AioSocketChannel, we get a ByteBuffer view of the
outbound buffer and specify it as a parameter when we call
AsynchronousSocketChannel.write().

In most cases, the write() operation is finished immediately.  However,
sometimes, it is scheduled for later execution.  In such a case, there's
a chance for a user's handler to append more data to the outbound
buffer.

When more data is appended to the outbound buffer, the outbound buffer
can expand its capacity by itself.  Changing the capacity of a buffer is
basically made of the following steps:

1. Allocate a larger new internal memory region.
2. Copy the current content of the buffer to the new memory region.
3. Rewire the buffer so that it refers to the new region.
4. Deallocate the old memory region.

Because the old memory region is deallocated at the step 4, the write
operation scheduled later will access the deallocated region, leading
all sort of data corruption or even segfaults.

To prevent this situation, I added suspendIntermediaryDeallocations()
and resumeIntermediaryDeallocations() to UnsafeByteBuf.

AioSocketChannel.doFlushByteBuf() now calls suspendIntermediaryDealloc()
to defer the deallocation of the old memory regions until the completion
handler is notified.
2012-12-02 21:50:33 +09:00
Trustin Lee
bfe2a96505 Fix AssertionError from AsyncSocketChannel.beginRead()
An AssertionError is triggered by a ByteBuf when beginRead() attempts to
access the buffer which has been freed already.  This commit ensures the
buffer is not freed before performing an I/O operation.

To determine if the buffer has been freed, UnsafeByteBuf.isFreed() has
been added.
2012-12-02 20:17:53 +09:00
Trustin Lee
6208c62888 Fix inspector warnings introduced by recent mergences 2012-11-30 23:01:57 +09:00
Trustin Lee
81e2db10fa ByteBufAllocator API w/ ByteBuf perf improvements
This commit introduces a new API for ByteBuf allocation which fixes
issue #643 along with refactoring of ByteBuf for simplicity and better
performance. (see #62)

A user can configure the ByteBufAllocator of a Channel via
ChannelOption.ALLOCATOR or ChannelConfig.get/setAllocator().  The
default allocator is currently UnpooledByteBufAllocator.HEAP_BY_DEFAULT.

To allocate a buffer, do not use Unpooled anymore. do the following:

  ctx.alloc().buffer(...); // allocator chooses the buffer type.
  ctx.alloc().heapBuffer(...);
  ctx.alloc().directBuffer(...);

To deallocate a buffer, use the unsafe free() operation:

  ((UnsafeByteBuf) buf).free();

The following is the list of the relevant changes:

- Add ChannelInboundHandler.freeInboundBuffer() and
  ChannelOutboundHandler.freeOutboundBuffer() to let a user free the
  buffer he or she allocated. ChannelHandler adapter classes implement
  is already, so most users won't need to call free() by themselves.
  freeIn/OutboundBuffer() methods are invoked when a Channel is closed
  and deregistered.

- All ByteBuf by contract must implement UnsafeByteBuf. To access an
  unsafe operation: ((UnsafeByteBuf) buf).internalNioBuffer()

- Replace WrappedByteBuf and ByteBuf.Unsafe with UnsafeByteBuf to
  simplify overall class hierarchy and to avoid unnecesary instantiation
  of Unsafe instances on an unsafe operation.

- Remove buffer reference counting which is confusing

- Instantiate SwappedByteBuf lazily to avoid instantiation cost

- Rename ChannelFutureFactory to ChannelPropertyAccess and move common
  methods between Channel and ChannelHandlerContext there. Also made it
  package-private to hide it from a user.

- Remove unused unsafe operations such as newBuffer()

- Add DetectionUtil.canFreeDirectBuffer() so that an allocator decides
  which buffer type to use safely
2012-11-22 15:10:59 +09:00
dantran
4107b08f29 Only generate OSGi manifest only at all-in-on sub module to reduce the complexity to the build 2012-11-19 06:27:18 +01:00
dantran
105f952f5d Clean up maven-bungle-plugin warnings 2012-11-12 11:42:42 +01:00
dantran
e236f5b77d [#154] [#727] Use maven-plugin-plugin to generate OSGi manifest 2012-11-12 09:15:36 +01:00
Trustin Lee
6f2840193a Fix inspection warnings related with JUnit usage 2012-11-12 12:45:06 +09:00
Trustin Lee
aedf8790c3 Fix various Javadoc issues / Do not use argN parameter names 2012-11-12 12:26:19 +09:00
Trustin Lee
ea4a0e3535 Prefer {@code ...} to <code>...</code> / Fix deprecation warnings 2012-11-12 11:51:23 +09:00
Trustin Lee
b195190b2a Remove an unused import 2012-11-12 11:26:29 +09:00
Trustin Lee
4dce19b814 Replace a variable with a constant wherever possible 2012-11-12 09:43:14 +09:00
Trustin Lee
aa7cd691df Remove redundant 'else' branches. 2012-11-12 09:31:40 +09:00
Trustin Lee
b4f796c5e3 Use 'x' over "x" wherever possible / String.equals("") -> isEmpty() 2012-11-10 08:03:52 +09:00
Trustin Lee
4e0f455e69 Remove methods overridden but identical with the super implementation / Make constructors of abstract classes protected rather than non-sense public
AbstractWrappedByteBuf.capacity(int) should raise a UnsupportedOperationException rather than ReadOnlyBufferException.
2012-11-10 07:10:30 +09:00
Trustin Lee
58ba0de659 Remove unnecessarily qualified static access 2012-11-10 01:32:21 +09:00
Trustin Lee
2ab38d8685 Remove pointless bitwise expressions 2012-11-09 17:26:11 +09:00
Norman Maurer
313f777491 [maven-release-plugin] prepare for next development iteration 2012-11-05 23:08:39 +01:00
Norman Maurer
57da8222a4 [maven-release-plugin] prepare release netty-4.0.0.Alpha7 2012-11-05 23:08:28 +01:00
Norman Maurer
d293e6c389 [#707] Hopefully now the correct fix for it which also takes the index into account when consolidate 2012-11-04 21:21:26 +01:00