Commit Graph

124 Commits

Author SHA1 Message Date
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
Veebs
36ac52a4bd Port http multipart package. See #709 2012-11-04 13:59:50 +01:00
Norman Maurer
4e3258973f [#707] Fix IndexOutOfBoundsException which could accour when the buffer is consolitated in the middle of an operation 2012-11-03 20:00:48 +01:00
Norman Maurer
122051ba44 Only a few javadocs 2012-10-28 20:45:00 +01:00
Norman Maurer
87cc67306f [maven-release-plugin] prepare for next development iteration 2012-10-28 18:41:25 +01:00
Norman Maurer
7315490fca [maven-release-plugin] prepare release netty-4.0.0.Alpha6 2012-10-28 18:41:17 +01:00
Norman Maurer
afc687436a Revert "[maven-release-plugin] prepare release netty-4.0.0.Alpha6"
This reverts commit 95de4db0f1.
2012-10-28 18:36:15 +01:00
Norman Maurer
16eb4ec713 Revert "[maven-release-plugin] prepare for next development iteration"
This reverts commit e3e0776c20.
2012-10-28 18:35:47 +01:00
Norman Maurer
e3e0776c20 [maven-release-plugin] prepare for next development iteration 2012-10-28 13:06:07 +01:00
Norman Maurer
95de4db0f1 [maven-release-plugin] prepare release netty-4.0.0.Alpha6 2012-10-28 13:05:59 +01:00
Norman Maurer
cbcabaf29b Add support for method chaining to ByteBuf 2012-10-18 08:57:23 +02:00
Trustin Lee
820af50b63 [maven-release-plugin] prepare for next development iteration 2012-09-28 17:57:40 +09:00
Trustin Lee
595e1067c7 [maven-release-plugin] prepare release netty-4.0.0.Alpha5 2012-09-28 17:57:04 +09:00
Norman Maurer
b8ae8be96a Fix IndexOutOfBoundException when using CompositeChannelBuffer and the readerIndex is at the last position and an empty array is passed to read to. See #474 2012-09-22 21:23:58 +02:00
norman
3295145e88 [maven-release-plugin] prepare for next development iteration 2012-09-13 10:40:52 +02:00