Commit Graph

651 Commits

Author SHA1 Message Date
Norman Maurer
2a14f74979 Ensure all methods are correctly override in *LeakAware*ByteBuf implementations
Motivation:

We missed to override a few methods and so some actions on the ByteBuf failed.

Modifications:

- Override all methods
- Add unit tests to ensure all is fixed.

Result:

All *LeakAware*ByteBuf have correct implementations
2016-05-21 07:28:13 +02:00
Norman Maurer
e10dca7601 Mark Recycler.recycle(...) deprecated and update usage.
Motivation:

Recycler.recycle(...) should not be used anymore and be replaced by Handle.recycle().

Modifications:

Mark it as deprecated and update usage.

Result:

Correctly document deprecated api.
2016-05-20 22:11:31 +02:00
Norman Maurer
d41f076419 Add more tests for PoolArenaMetric
Motivation:

We should add some more tests for PoolarenaMetric

Modifications:

Add more tests

Result:

Better test coverage for metrics
2016-05-20 21:56:36 +02:00
Norman Maurer
b83ffcc447 Add timeout to PooledByteBufAllocatorTest
Motivation:

Some tests in PooledByteBufAllocatorTest are blocking on a CountDownLatch. We should use a timeout on these tests so these will not block forever on a failure.

Modifications:

Add timeout param to @Test annotation

Result:

Have sane timeouts on tests.
2016-05-20 21:52:53 +02:00
Norman Maurer
43e91c2476 Correctly implement DefaultByteBufHolder.equals(...) and hashCode()
Motivation:

DefaultByteBufHolder.equals(...) and hashCode() should be implemented so it works correctly with instances that share the same content.

Modifications:

Add implementations and a unit-test.

Result:

Have correctly working equals(...) and hashCode() method
2016-05-20 21:43:40 +02:00
Trustin Lee
3a9f472161 Make retained derived buffers recyclable
Related: #4333 #4421 #5128

Motivation:

slice(), duplicate() and readSlice() currently create a non-recyclable
derived buffer instance. Under heavy load, an application that creates a
lot of derived buffers can put the garbage collector under pressure.

Modifications:

- Add the following methods which creates a non-recyclable derived buffer
  - retainedSlice()
  - retainedDuplicate()
  - readRetainedSlice()
- Add the new recyclable derived buffer implementations, which has its
  own reference count value
- Add ByteBufHolder.retainedDuplicate()
- Add ByteBufHolder.replace(ByteBuf) so that..
  - a user can replace the content of the holder in a consistent way
  - copy/duplicate/retainedDuplicate() can delegate the holder
    construction to replace(ByteBuf)
- Use retainedDuplicate() and retainedSlice() wherever possible
- Miscellaneous:
  - Rename DuplicateByteBufTest to DuplicatedByteBufTest (missing 'D')
  - Make ReplayingDecoderByteBuf.reject() return an exception instead of
    throwing it so that its callers don't need to add dummy return
    statement

Result:

Derived buffers are now recycled when created via retainedSlice() and
retainedDuplicate() and derived from a pooled buffer
2016-05-17 11:16:13 +02:00
Norman Maurer
30bb3094c1 [#5227] Fix race-condition in PooledByteBufAllocatorTest
Motivation:

PooledByteBufAllocatorTest.testNumThreadCachesWithNoDirrectArenas() had a race as it just used LockSupport.parkNanos(). We should better use a CountdownLatch and so be sure we really have init everything.

Modifications:

Replace LockSupport.parkNanos(...) with CountdownLatch usage

Result:

No more race in test.
2016-05-13 08:51:44 +02:00
Norman Maurer
2472d8c3cf [#5216] Correctly increment deallocationsHuge when call PoolArena.free
Motivation:

We called deallocationsHuge.decrement() but it needs to be increment()

Modifications:

Replace decrement() with increment()

Result:

Correct metrics.
2016-05-06 21:44:43 +02:00
Norman Maurer
9f5eb7d698 Add CharSequence operations to ByteBuf
Motivation:

Often users either need to read or write CharSequences to a ByteBuf. We should add methods for this to ByteBuf as we can do some optimizations for this depending on the implementation.

Modifications:

Add setCharSequence, writeCharSequence, getCharSequence and readCharSequence

Result:

Easier reading / writing of CharSequence with ByteBuf.
2016-05-06 16:52:00 +02:00
Carl Mastrangelo
cf07f984b1 Add @Deprecated when the javadoc says its deprecated
Motivation:

Reduce nag warnings when compiling, make it easier for IDEs to display what's deprecated.

Modifications:

Added @Deprecated in a few places

Result:

No more warnings.
2016-05-01 20:30:13 +02:00
Norman Maurer
d698746609 Add ByteBuf.asReadOnly()
Motivation:

We lately added ByteBuf.isReadOnly() which allows to detect if a buffer is read-only or not. We should add ByteBuf.asReadOnly() to allow easily access a read-only version of a buffer.

Modifications:

- Add ByteBuf.asReadOnly()
- Deprecate Unpooled.unmodifiableBuffer(Bytebuf)

Result:

More consistent api.
2016-04-14 10:51:20 +02:00
Jongyeol Choi
96455a9558 Implement codec-redis
Motivation:

- To encode/decode RESP (REdis Serialization Protocol) using Netty
- http://redis.io/topics/protocol

Modifications:

- Add RedisEncoder, RedisDecoder
- Add RedisBulkStringAggregator and RedisArrayAggregator
- Add tests

Result:

- Added codec-redis
- codec-redis can encode/decode RESP (REdis Serialization Protocol)
2016-04-14 10:23:16 +02:00
Norman Maurer
7d3ca7fb92 Fix IndexOutOfBoundsException when FixedCompositeByteBuf is constructed with an empty array.
Motivation:

When FixedCompositeByteBuf was constructed with new ByteBuf[0] and IndexOutOfboundsException was thrown.

Modifications:

Fix constructor

Result:

No more exception
2016-04-14 08:07:55 +02:00
Norman Maurer
4ddb81f36f Not cache SwappedByteBuf in AbstractByteBuf to reduce memory footprint.
Motivation:

We should not cache the SwappedByteBuf in AbstractByteBuf to reduce the memory footprint.

Modifications:

Not cache the SwappedByteBuf.

Result:

Less memory footprint.
2016-04-14 08:06:21 +02:00
Norman Maurer
2537880e5d Fix typo in exception message
Motivation:

Typo in exception message.

Modifications:

Fix the typo.

Result:

No more typo.
2016-04-14 08:03:35 +02:00
Trustin Lee
0b078314b2 Add ByteBuf.isReadOnly()
Motivation:

It is sometimes useful to determins if a buffer is read-only.

Modifications:

Add ByteBuf.isReadOnly()

Result:

One more feature
2016-04-13 21:41:27 +09:00
Trustin Lee
57063b6db0 Implement the ByteBuf methods that should have been overridden
Motivation:

Some ByteBuf implementations do not override all necessary methods,
which can lead to potentially sub-optimal behavior.

Also, SlicedByteBuf does not perform the range check correctly due to
missing overrides.

Modifications:

- Add missing overrides
- Use unwrap() instead of direct member access in derived buffers for
  consistency
- Merge unwrap0() into unwrap() using covariant return type
- Deprecate AbstractDerivedByteBuf and its subtypes, because they were
  not meant to be public

Result:

Correctness
2016-04-13 21:05:57 +09:00
Norman Maurer
572bdfb494 [maven-release-plugin] prepare for next development iteration 2016-04-10 08:37:18 +02:00
Norman Maurer
c6121a6f49 [maven-release-plugin] prepare release netty-4.1.0.CR7 2016-04-10 08:36:56 +02:00
Norman Maurer
6e919f70f8 [maven-release-plugin] rollback the release of netty-4.1.0.CR7 2016-04-09 22:13:44 +02:00
Norman Maurer
4cdd51509a [maven-release-plugin] prepare release netty-4.1.0.CR7 2016-04-09 22:05:34 +02:00
Norman Maurer
69070c37ba ByteBuf.readBytes(...) should use the allocator of the buffer to create the new buffer. Related to [#5093]
Motivation:

ByteBuf.readBytes(...) uses Unpooled.buffer(...) internally which will use a heap ByteBuf and also not able to make use of the allocator which may be pooled. We should better make use of the allocator.

Modifications:

Use the allocator for thenew buffer.

Result:

Take allocator into account when copy bytes.
2016-04-09 20:28:17 +02:00
Norman Maurer
200ca39b5c Add PooledByteBufAllocator.dumpStats() which allows to obtain a human-readable status of the allocator.
Motiviation:

Sometimes it is useful to dump the status of the PooledByteBufAllocator and log it. Doing this is currently a bit cumbersome as the user needs to basically iterate through all the metrics and compose the String. we would better provide an easy way to do this.

Modification:

Add dumpStats() method.

Result:

Easier to get a view into the status of the allocator.
2016-04-09 19:16:53 +02:00
Norman Maurer
cfa258e096 PoolChunkList.allocate(...) should return false without the need to walk all the contained PoolChunks when the requested capacity is too big.
Motivation:

PoolChunkList.allocate(...) should return false without the need to walk all the contained PoolChunks when the requested capacity is larger then the capacity that can be allocated out of the PoolChunks in respect to the minUsage() and maxUsage() of the PoolChunkList.

Modifications:

Precompute the maximal capacity that can be allocated out of the PoolChunks that are contained in the PoolChunkList and use this to fast return from the allocate(...) method if an allocation capacity larger then that is requested.

Result:

Faster detection of allocations that can not be handled by the PoolChunkList and so faster allocations in general via the PoolArena.
2016-04-09 19:00:20 +02:00
Norman Maurer
2ae97946dd Allow to retrieve the number of active bytes per PoolArena.
Motivation:

To better understand how much memory is used by Netty for ByteBufs it is useful to understand how many bytes are currently active (allocated) per PoolArena.

Modifications:

- Add PoolArenaMetric.numActiveBytes()

Result:

The user is able to get better insight into the PooledByteBufAllocator.
2016-04-09 18:54:05 +02:00
Norman Maurer
787a55874b Cleanup PoolChunk and PoolArena
Motivation:

To make it easier to understand PoolChunk and PoolArena we should cleanup duplicated code.

Modifications:

- Move reused code into methods
- Use Math.max(...)

Result:

Cleaner code and easier to understand.
2016-04-09 18:47:40 +02:00
Norman Maurer
1b4a5609d3 Not try to allocate out of the PoolChunkList that contains only full PoolChunks
Motivation:

When doing a normal allocation in PoolArena we also tried to allocate out of the PoolChunkList that only contains completely full PoolChunks. This makes no sense as these are full anyway so an allocation will never work here and just gives a perf hit as we need to walk the whole list of PoolChunks in the list.

Modifications:

Not try to allocate from PoolChunkList that only contains full PoolChunks

Result:

Faster allocation times when a new PoolChunk must be created.
2016-04-09 18:39:56 +02:00
Norman Maurer
7b121c26ae Use Math.min(...) and Math.max(...) as these are intrinsics.
Motivation:

We should better use Math utilities as these are intrinsics. This is a cleanup for ea3ffb8536.

Modifications:

Use Math utilities.

Result:

Cleaner code and use of intrinsics.
2016-04-06 21:30:32 +02:00
Norman Maurer
88b093c481 PoolChunkList not correctly move PoolChunks when these are moved.
Motivation:

When a PoolChunk needs to get moved to the previous PoolChunkList because of the minUsage / maxUsage constraints we always just moved it one level which is incorrect and so could lead to have PoolChunks in the wrong PoolChunkList (in respect to their minUsage / maxUsage settings). This then could have the effect that PoolChunks are not released / freed in a timely fashion and so.

Modifications:

- Correctly move PoolChunks between PoolChunkLists, which includes moving it multiple "levels".
- Add unit test

Result:

Correctlty move the PoolChunk to PoolChunkList when it is freed, even if its multiple layers.
2016-04-06 11:52:23 +02:00
Norman Maurer
ea3ffb8536 Fix PoolChunkList.minUsage() and maxUsage() for head and tail
Motivation:

The PoolChunkList.minUsage() and maxUsage() needs to take special action to translate Integer.MIN_VALUE / MAX_VALUE as these are used internal for tail and head of the linked-list structure.

Modifications:

- Correct the minUsage() and maxUsage() methods.
- Add unit test.

Result:

Correct metrics
2016-04-06 10:03:28 +02:00
Norman Maurer
4e779cd6b0 Allow to disable leak detection for all buffers when using UnpooledByteBufAllocator.
Motivation:

Sometimes it is useful to allow to disable the leak detection of buffers if the UnpooledByteBufAllocator is used. This is for example true if the app wants to leak buffers into user code but not want to put the burden on the user to always release the buffer.

Modifications:

Add another constructor to UnpooledByteBufAllocator that allows to completely disable leak-detection for all buffers that are allocator out of the UnpooledByteBufAllocator.

Result:

It's possible to disable leak-detection when the UnpooledByteBufAllocator is used.
2016-04-05 13:17:16 +02:00
Norman Maurer
1d23e358b4 Only increment metric for huge / normal allocations after the allocation was really done.
Motivation:

We should only increment the metric for the huge / normal allocation after it is done. Also we should only decrement once deallocate.

Modifications:

- Move increment after the allocation.
- Fix deallocation metric and move it after deallocation

Result:

More correct metrics.
2016-04-05 12:00:44 +02:00
Norman Maurer
b32e07c75a PoolThreadCache uses wrong variable in IllegalArgumentException
Motivation:

PoolThreadCache includes the wrong value when throwing a IllegalArgumentException because of freeSweepAllocationThreshold.

Modifications:

Use the correct value.

Result:

Correct exception message.
2016-04-05 11:48:38 +02:00
Trustin Lee
3b941c2a7c [maven-release-plugin] prepare for next development iteration 2016-04-02 01:25:05 -04:00
Trustin Lee
7368ccc539 [maven-release-plugin] prepare release netty-4.1.0.CR6 2016-04-02 01:24:55 -04:00
Norman Maurer
cee38ed2b6 [maven-release-plugin] prepare for next development iteration 2016-03-29 16:45:13 +02:00
Norman Maurer
9cd9e7daeb [maven-release-plugin] prepare release netty-4.1.0.CR5 2016-03-29 16:44:33 +02:00
Karas Lukáš
42419d918d Fix setBytes when source is read-only ByteBuffer and target is pooled buffer
Motivation:

The method setBytes creates temporary heap buffer when source buffer is read-only.
But this temporary buffer is not used correctly and may lead to data corruption.
This problem occurs when target buffer is pooled and temporary buffer
arrayOffset() is not zero.

Modifications:

Use correct arrayOffset when calling PlatformDependent.copyMemory.
Unit test was added to test this case.

Result:

Setting buffer content works correctly when target is pooled buffer and source
is read-only ByteBuffer.
2016-03-22 09:18:44 +01:00
Norman Maurer
28d03adbfe [maven-release-plugin] prepare for next development iteration 2016-03-21 11:51:50 +01:00
Norman Maurer
4653dc1d05 [maven-release-plugin] prepare release netty-4.1.0.CR4 2016-03-21 11:51:12 +01:00
Norman Maurer
8d499a2419 Fix calculation of PoolArena metrics after introducing a regression in 89da788fd2 2016-03-17 10:37:22 +01:00
Norman Maurer
daa4efcfef Add proper synchronization when access metrics.
Motivation:

We also need to add synchronization when access fields to ensure we see the latest updates.

Modifications:

Add synchronization when read fields that are written concurrently.

Result:

Ensure correct visibility of updated.
2016-03-17 09:05:48 +01:00
Xiaoyan Lin
01835fdf18 Add LineEncoder to append a line separator automatically
Motivation:

See #1811

Modifications:

Add LineEncoder and LineSeparator

Result:

The user can use LineEncoder to write a String with a line separator automatically
2016-03-16 20:31:01 +01:00
Norman Maurer
6796604f46 Remove double spacing
Motivation:

We had some double spacing in the methods which should be removed to keep things consistent.

Modifications:

Remove redundant spaces.

Result:

Cleaner / consistent coding style.
2016-03-16 10:25:48 +01:00
Norman Maurer
7d12333c38 Add final keyword which was missing in 47b598e6ce
Motivation:

The two fields should have final keyword.

Modifications:

Add final keyword

Result:

Cleaner code.
2016-03-16 10:25:00 +01:00
buchgr
83c349ffa9 Fix wrong use of assertTrue in unit test.
Motivation:

My previous commit b88a980482 introduced a flawed unit test,
that executes an assertion in a different thread than the test thread.
If this assertion fails, the test doesn't fail.

Modifications:

Replace the assertion by a proper workaround.

Result:

More correct unit test
2016-03-15 16:02:33 +01:00
buchgr
b88a980482 Change arena to thread cache mapping algorithm to be closer to ideal.
Motivation:
Circular assignment of arenas to thread caches can lead to less than optimal
mappings in cases where threads are (frequently) shutdown and started.

Example Scenario:
There are a total of 2 arenas. The first two threads performing an allocation
would lead to the following mapping:

Thread 0 -> Arena 0
Thread 1 -> Arena 1

Now, assume Thread 1 is shut down and another Thread 2 is started. The current
circular assignment algorithm would lead to the following mapping:

Thread 0 -> Arena 0
Thread 2 -> Arena 0

Ideally, we want Thread 2 to use Arena 1 though.

Presumably, this is not much of an issue for most Netty applications that do all
the allocations inside the eventloop, as eventloop threads are seldomly shut down
and restarted. However, applications that only use the netty-buffer package
or implement their own threading model outside the eventloop might suffer from
increased contention. For example, gRPC Java when using the blocking stub
performs some allocations outside the eventloop and within its own thread pool
that is dynamically sized depending on system load.

Modifications:

Implement a linear scan algorithm that assigns a new thread cache to the arena
that currently backs the fewest thread caches.

Result:

Closer to ideal mappings between thread caches and arenas. In order to always
get an ideal mapping, we would have to re-balance the mapping whenever a thread
dies. However, that's difficult because of deallocation.
2016-03-15 14:16:34 +01:00
buchgr
35771dd1cd Fix race in PoolArena.allocate. Fixes #4829
Motivation:

The statistic counters PoolArena.(allocationsTiny|allocationsSmall) are
not protected by a per arena lock, but by a per size class lock. Thus,
two concurrent allocations of different size (class) could lead to a
race and ultimately to wrong statistics.

Modifications:

Use a thread-safe LongCounter instead of a plain long data type.

Result:

Fewer data races.
2016-03-14 08:57:46 +01:00
Xiaoyan Lin
e2d4e22243 Add CharsetUtil.encoder/decoder() methods
Motivation:

See #3321

Modifications:

1. Add CharsetUtil.encoder/decoder() methods
2. Deprecate CharsetUtil.getEncoder/getDecoder() methods

Result:

Users can use new CharsetUtil.encoder/decoder() to specify error actions
2016-03-07 10:48:31 +00:00
Scott Mitchell
94f27be59b ByteBufUtil writeUtf8 and writeAscii helper methods
Motivation:
Utility methods in ByteBufUtil to writeUtf8 and writeAscii expect a buffer to already be allocated. If the user does not have a buffer allocated they have to know details of the encoding in order to know the size of the buffer to allocate.

Modifications:
- Add writeUtf8 and writeAscii which take a ByteBufAllocator and allocate a ByteBuf of the correct size for the user

Result:
ByteBufUtil methods which are easier to use if the user doesn't already have a ByteBuf.
2016-02-29 10:09:06 +01:00
Norman Maurer
ca443e42e0 [maven-release-plugin] prepare for next development iteration 2016-02-19 23:00:11 +01:00
Norman Maurer
f39eb9a6b2 [maven-release-plugin] prepare release netty-4.1.0.CR3 2016-02-19 22:59:52 +01:00
Norman Maurer
74495fd27f Add advanced leakdetection for methods introduced by [#4842]
Motivation:

[#4842] introduced 4 new methods but missed to implement advanced leak detection for these.

Modifications:

Correctly implement advanced leak detection for these methods.

Result:

Advanced leak detection works for all methods as expected.
2016-02-17 09:40:42 -08:00
Xiaoyan Lin
ccb0870600 Add methods with position independent FileChannel calls to ByteBuf
Motivation

See ##3229

Modifications:

Add methods with position independent FileChannel calls to ByteBuf and its subclasses.

Results:

The user can use these new methods to read/write ByteBuff without updating FileChannel's position.
2016-02-14 20:37:37 -08:00
Scott Mitchell
691bc1690e ByteBufUtil.writeUtf8 not consistent with String.getBytes(Charset)
Motivation:
f750d6e36c added support for surrogates in the writeUtf8 conversion. However exceptions are thrown if invalid input is detected, but the JDK (and slow path of writeUtf8) uses a replacement character and does not throw. We should behave the same way.

Modificiations:
- Don't throw in ByteBufUtil.writeUtf8, and instead use a replacement character consistent with the JDK

Result:
ByteBufUtil.writeUtf8 behavior is consistent with the JDK UTF_8 conversion.
2016-02-11 08:24:26 -08:00
Norman Maurer
19907030d1 [#4841] Fix segfault if UnpooledUnsafeHeapByteBuf.getShort(..) is used and UNALGINED access is not possible.
Motivation:

We missed to take the byte[] into account when try to access the bytes and so produce a segfault.

Modifications:

Correctly pass the byte[] in.

Result:

No more segfault.
2016-02-05 09:24:32 +01:00
Norman Maurer
75a2ddd61c [maven-release-plugin] prepare for next development iteration 2016-02-04 16:51:44 +01:00
Norman Maurer
7eb3a60dba [maven-release-plugin] prepare release netty-4.1.0.CR2 2016-02-04 16:37:06 +01:00
Scott Mitchell
6312c2f00b CompositeByteBuf.addComponent always assume reference count ownership
Motivation:
The current interface for CompositeByteBuf.addComponent is not clear under what conditions ownership is transferred when addComponent is called. There should be a well defined behavior so that users can ensure that no leaks occur.

Modifications:
- CompositeByteBuf.addComponent should always assume reference count ownership

Result:
Users that call CompositeByteBuf.addComponent do not have to independently check if the buffer's ownership has been transferred and if not independently release the buffer.
Fixes https://github.com/netty/netty/issues/4760
2016-02-02 11:38:11 -08:00
Norman Maurer
1c417e5f82 [maven-release-plugin] prepare for next development iteration 2016-01-21 15:35:55 +01:00
Norman Maurer
c681a40a78 [maven-release-plugin] prepare release netty-4.1.0.CR1 2016-01-21 15:28:21 +01:00
Norman Maurer
cdb70d31ee [#4017] Implement proper resource leak detection for CompositeByteBuf
Motivation:

CompositeByteBuf only implemented simple resource leak detection and how it was implemented was completly different to the way it was for ByteBuf. The other problem was that slice(), duplicate() and others would not return a resource leak enabled buffer.

Modifications:

- Proper implementation for all level of resource leak detection for CompositeByteBuf

Result:

Proper resource leak detection for CompositeByteBuf.
2016-01-18 10:14:39 +01:00
Norman Maurer
45674baf3e Correctly report *LE operations when advanced leak detection is used.
Motivation:

We missed reporting *LE operations when AdvancedLeakAwareByteBuf was used. This could lead to incomplete access reports.

Modifications:

Correctly record access for *LE operations.

Result:

Correct leak reports.
2016-01-12 19:57:02 +01:00
Norman Maurer
f41aa306e9 Remove multiple calls to recordLeakNonRefCountingOperation() in AdvancedLeakAwareByteBuf.forEachByteDesc
Motivation:

AdvancedLeakAwareByteBuf.forEachByteDesc(...) called recordLeakNonRefCountingOperation() two times which resulted in incorrect leak detection reports.

Modifications:

Remove duplicated call to recordLeakNonRefCountingOperation()

Result:

Correct leak detection results
2016-01-12 19:53:23 +01:00
Xiaoyan Lin
6fe0db4001 Fix IndexOutOfBoundsException for CompositeByteBuf #4679
Motivation:

Modifications:

Use the correct start index

Result:

Fixes #4679
2016-01-08 19:11:57 -08:00
Scott Mitchell
e578134b57 Unpooled and Wrapped Buffer Leak
Motivation:
There are a few buffer leaks related to how Unpooled.wrapped and Base64.encode is used.

Modifications:
- Fix usages of Bas64.encode to correct leaks
- Clarify interface of Unpooled.wrapped* to ensure reference count ownership is clearly defined.

Result:
Reference count code is more clearly defined and less leaks are possible.
2016-01-07 12:02:52 -08:00
Sergey Polovko
0efb679585 replace ends -> starts 2015-12-28 08:03:22 +01:00
Xiaoyan Lin
475d901131 Fix errors reported by javadoc
Motivation:

Javadoc reports errors about invalid docs.

Modifications:

Fix some errors reported by javadoc.

Result:

A lot of javadoc errors are fixed by this patch.
2015-12-27 08:36:45 +01:00
Xiaoyan Lin
a96d52fe66 Fix javadoc links and tags
Motivation:

There are some wrong links and tags in javadoc.

Modifications:

Fix the wrong links and tags in javadoc.

Result:

These links will work correctly in javadoc.
2015-12-26 08:34:31 +01:00
Scott Mitchell
f750d6e36c ByteBufUtil.writeUtf8 Surrogate Support
Motivation:
UTF-16 can not represent the full range of Unicode characters, and thus has the concept of Surrogate Pair (http://unicode.org/glossary/#surrogate_pair) where 2 16-bit code units can be used to represent the missing characters. ByteBufUtil.writeUtf8 is currently does not support this and is thus incomplete.

Modifications:
- Add support for surrogate pairs in ByteBufUtil.writeUtf8

Result:
ByteBufUtil.writeUtf8 now supports surrogate pairs and is correctly converting to UTF-8.
2015-12-18 13:51:52 -08:00
Norman Maurer
4e467f5c6f Throw ReadOnlyBufferException if unsafe buffer is used and dst is direct
Motivation:

We missed to check if the dst is ready only before using unsafe to copy data into it which lead to data-corruption. We need to ensure we respect ready only ByteBuffer.

Modifications:

- Correctly check if the dst is ready only before copy data into it in UnsafeByteBufUtil
- Also make it work for buffers that are not direct and not have an array

Result:

No more data corruption possible if the dst buffer is readonly and unsafe buffer implementation is used.
2015-12-17 13:25:21 +01:00
Fabian Lange
e5386b05e6 Move Hex dump related util from ByteBufUtil to inner class
Motivation:

Initialisation of the ByteBufUtil class, a class frequently used is
delayed because a significant number of String operations is performed to
fill a HEXDUMP_ROWPREFIXES array. This array also sticks to the Strings
forever.
It is quite likely that applications never use the hexdump facility.

Modification:

Moved the static initialisation and references to a static inner class.
This delays initialisation (and memory usage) until actually needed.
The API is kept as is.

Result:

Faster startup time, less memory usage for most netty using applications.
2015-12-11 19:47:57 +01:00
Alex Petrov
0f9492c9af Add first-class Little Endian support to ByteBuf and descendants
As discussed in	#3209, this PR adds Little Endian accessors
to ByteBuf and descendants.

Corresponding accessors were added to UnsafeByteBufUtil,
HeapByteBufferUtil to avoid calling `reverseBytes`.

Deprecate `order()`, `order(buf)` and `SwappedByteBuf`.
2015-11-26 20:30:24 +01:00
Janecek Jakub
a4ebdd0eca Fix setBytes on read-only ByteBuffer
Motivation:

The method setBytes did not work correctly because read-only ByteBuffer
does not allow access to its underlying array.

Modifications:

New case was added for ByteBuffer's that are not direct and do not have an array.
These must be handled by copying the data into a temporary array. Unit test was
added to test this case.

Result:

It is now possible to use read-only ByteBuffer as the source
for the setBytes method.
2015-11-17 22:45:37 -08:00
Norman Maurer
2ecce8fa56 [maven-release-plugin] prepare for next development iteration 2015-11-10 22:59:33 +01:00
Norman Maurer
6a93f331d3 [maven-release-plugin] prepare release netty-4.1.0.Beta8 2015-11-10 22:50:57 +01:00
Sylwester Lachiewicz
a18416df60 Export defaults from PooledByteBufAcclocator static fields
Motivation:

Allow external application to tune initialization of PooledByteBufAllocator

Modifications:

Added new static methods

Result:

Exported
DEFAULT_NUM_HEAP_ARENA
DEFAULT_NUM_DIRECT_ARENA
DEFAULT_PAGE_SIZE
DEFAULT_MAX_ORDER
DEFAULT_TINY_CACHE_SIZE
DEFAULT_SMALL_CACHE_SIZE
DEFAULT_NORMAL_CACHE_SIZE
2015-11-08 08:08:23 +01:00
Scott Mitchell
19658e9cd8 HTTP/2 Headers Type Updates
Motivation:
The HTTP/2 RFC (https://tools.ietf.org/html/rfc7540#section-8.1.2) indicates that header names consist of ASCII characters. We currently use ByteString to represent HTTP/2 header names. The HTTP/2 RFC (https://tools.ietf.org/html/rfc7540#section-10.3) also eludes to header values inheriting the same validity characteristics as HTTP/1.x. Using AsciiString for the value type of HTTP/2 headers would allow for re-use of predefined HTTP/1.x values, and make comparisons more intuitive. The Headers<T> interface could also be expanded to allow for easier use of header types which do not have the same Key and Value type.

Motivation:
- Change Headers<T> to Headers<K, V>
- Change Http2Headers<ByteString> to Http2Headers<CharSequence, CharSequence>
- Remove ByteString. Having AsciiString extend ByteString complicates equality comparisons when the hash code algorithm is no longer shared.

Result:
Http2Header types are more representative of the HTTP/2 RFC, and relationship between HTTP/2 header name/values more directly relates to HTTP/1.x header names/values.
2015-10-30 15:29:44 -07:00
Norman Maurer
a47685b243 Use bitwise operation when sampling for resource leak detection.
Motivation:

Modulo operations are slow, we can use bitwise operation to detect if resource leak detection must be done while sampling.

Modifications:

- Ensure the interval is a power of two
- Use bitwise operation for sampling
- Add benchmark.

Result:

Faster sampling.
2015-10-29 19:18:44 +01:00
Norman Maurer
d93f906255 [#4198] Fix race-condition when allocate from multiple-thread.
Motivation:

Fix a race condition that was introduced by f18990a8a5 that could lead to a NPE when allocate from the PooledByteBufAllocator concurrently by many threads.

Modifications:

Correctly synchronize on the PoolSubPage head.

Result:

No more race.
2015-10-27 07:39:42 +01:00
Norman Maurer
2be4bb74a5 Share code between Unsafe ByteBuf implementations
Motiviation:

We have a lot of duplicated code which makes it hard to maintain.

Modification:

Move shared code to UnsafeByteBufUtil and use it in the implementations.

Result:

Less duplicated code and so easier to maintain.
2015-10-23 12:05:01 +02:00
Norman Maurer
992f8db0b4 Share code between Heap ByteBuf implementations
Motiviation:

We have a lot of duplicated code which makes it hard to maintain.

Modification:

Move shared code to HeapByteBufUtil and use it in the implementations.

Result:

Less duplicated code and so easier to maintain.
2015-10-23 11:53:34 +02:00
Norman Maurer
7d4c077492 Add *UnsafeHeapByteBuf for improve performance on systems with sun.misc.Unsafe
Motivation:

sun.misc.Unsafe allows us to handle heap ByteBuf in a more efficient matter. We should use special ByteBuf implementation when sun.misc.Unsafe can be used to increase performance.

Modifications:

- Add PooledUnsafeHeapByteBuf and UnpooledUnsafeHeapByteBuf that are used when sun.misc.Unsafe is ready to use.
- Add UnsafeHeapSwappedByteBuf

Result:

Better performance when using heap buffers and sun.misc.Unsafe is ready to use.
2015-10-21 09:04:13 +02:00
Norman Maurer
f30a51b905 Correctly handle byte shifting if system does not support unaligned access.
Motivation:

We had a bug in our implemention which double "reversed" bytes on systems which not support unaligned access.

Modifications:

- Correctly only reverse bytes if needed.
- Share code between unsafe implementations.

Result:

No more data-corruption on sytems without unaligned access.
2015-10-20 17:32:13 +02:00
Matteo Merli
27c68647df In (Pooled|Unpooled)UnsafeDirectByteBuf copy memory directly to and from ByteBuffer
Motivation:

When moving bytes between a PooledUnsafeDirectByteBuf or an UnpooledUnsafeDirectByteBuf
and a ByteBuffer, a temp ByteBuffer is allocated and will need to be GCed. This is a
common case since a ByteBuffer is always needed when reading/writing on a file,
for example.

Modifications:

Use PlatformDependent.copyMemory() to avoid the need for the temp ByteBuffer

Result:

No temp ByteBuffer allocated and GCed.
2015-10-19 22:24:07 +02:00
Norman Maurer
5a6238ed4c Minimize reference count checks in SlicedByteBuf
Motivation:

SlicedByteBuf did double reference count checking for various bulk operations, which affects performance.

Modifications:

- Add package private method to AbstractByteBuf that can be used to check indexes without check the reference count
- Use this new method in the bulk operation os SlicedByteBuf as the reference count checks take place on the wrapped buffer anyway
- Fix test-case to not try to read data that is out of the bounds of the buffer.

Result:

Better performance on bulk operations when using SlicedByteBuf (and sub-classes)
2015-10-16 21:09:03 +02:00
Norman Maurer
bd4df20eb3 Cleanup buffer tests.
Motivation:

Some of the tests in the buffer module contained unused code. Some of the tests also used unnecessary inheritance which could be avoided to simplify code.

Modifications:

Cleanup the test cases.

Result:

Cleaner code, less cruft.
2015-10-16 20:52:28 +02:00
Norman Maurer
8f13e333dd Always return a real slice even when the length is 0
Motivation:

We need to always return a real slice even when the requested length is 0. This is needed as otherwise we not correctly share the reference count and so may leak a buffer if the user call release() on the returned slice and expect it to decrement the reference count of the "parent" buffer.

Modifications:

- Always return a real slice
- Add unit test for the bug.

Result:

No more leak possible when a user requests a slice of length 0 of a SlicedByteBuf.
2015-10-16 20:46:05 +02:00
Norman Maurer
4c287d4e27 Added SlicedAbstractByteBuf that can provide fast-path for _get* and _set* methods
Motivation:

SlicedByteBuf can be used for any ByteBuf implementations and so can not do any optimizations that could be done
when AbstractByteBuf is sliced.

Modifications:

- Add SlicedAbstractByteBuf that can eliminate range and reference count checks for _get* and _set* methods.

Result:

Faster SlicedByteBuf implementations for AbstractByteBuf sub-classes.
2015-10-16 09:12:20 +02:00
Norman Maurer
8c93f4b1ef Added DuplicatedAbstractByteBuf that can provide fast-path for _get* and _set* methods
Motivation:

DuplicatedByteBuf can be used for any ByteBuf implementations and so can not do any optimizations that could be done
when AbstractByteBuf is duplicated.

Modifications:

- Add DuplicatedAbstractByteBuf that can eliminate range and reference count checks for _get* and _set* methods.

Result:

Faster DuplicatedByteBuf implementations for AbstractByteBuf sub-classes.
2015-10-16 08:56:35 +02:00
Norman Maurer
2aef4a504f Minimize object allocation when calling AbstractByteBuf.toString(..., Charset)
Motivation:

Calling AbstractByteBuf.toString(..., Charset) is used quite frequently by users but produce a lot of GC.

Modification:

- Use a FastThreadLocal to store the CharBuffer that are needed for decoding.
- Use internalNioBuffer(...) when possible

Result:

Less object creation / Less GC
2015-10-15 17:51:57 +02:00
Norman Maurer
9697afc106 Allow to disable reference count checks on every access of the ByteBuf
Motiviation:

Checking reference count on every access on a ByteBuf can have some big performance overhead depending on how the access pattern is. If the user is sure that there are no reference count errors on his side it should be possible to disable the check and so gain the max performance.

Modification:

- Add io.netty.buffer.bytebuf.checkAccessible system property which allows to disable the checks. Enabled by default.
- Add microbenchmark

Result:

Increased performance for operations on the ByteBuf.
2015-10-15 10:21:16 +02:00
Norman Maurer
ffe7aafd82 Optimize and minimize bound checks
Motivation:

We should minimize and optimize bound checks as much as possible to get the most out of performance.

Modifications:

- Use bitwise operations to remove branching
- Remove branches when possible

Result:

Better performance for various operations.
2015-10-15 10:18:13 +02:00
Norman Maurer
30dc1c1fa4 [#4313] ByteBufUtil.writeUtf8 should use fast-path for WrappedByteBuf
Motivation:

ByteBufUtil.writeUtf8(...) / writeUsAscii(...) can use a fast-path when writing into AbstractByteBuf. We should try to unwrap WrappedByteBuf implementations so
we are able to do the same on wrapped AbstractByteBuf instances.

Modifications:

- Try to unwrap WrappedByteBuf to use the fast-path

Result:

Faster writing of utf8 and usascii for WrappedByteBuf instances.
2015-10-13 12:00:37 +02:00
Norman Maurer
99b11c95b4 [#4327] Ensure toString() will not throw IllegalReferenceCountException
Motivation:

As toString() is often used while logging we need to ensure this produces no exception.

Modifications:

Ensure we never throw an IllegalReferenceCountException.

Result:

Be able to log without produce exceptions.
2015-10-10 20:12:43 +02:00
Scott Mitchell
81a913ced1 ByteBufUtilTest bug
Motivation:
The logic in ByteBufUtilTest.ByteBufUtilTest is wrong. It is attempting to ensure at least 1 byte is different in the ranges that will be subsequently compared, but does so before the copy operation.

Modifications:
- Move the code which ensures there is a difference to after the copy
- Simplify the logic which ensures there is a difference

Result:
Unit test now operates as designed.
2015-10-09 10:43:12 -07:00
Norman Maurer
2ff2806ada [maven-release-plugin] prepare for next development iteration 2015-10-02 09:03:29 +02:00
Norman Maurer
5a43de10f7 [maven-release-plugin] prepare release netty-4.1.0.Beta7 2015-10-02 09:02:58 +02:00
Scott Mitchell
67ddb61eca ByteBufUtilTest test failure
Motivation:
ByteBufUtilTest.notEqualsBufferSubsections is testing non-equality but just uses random numbers to assume they will not be equal. Even after the random bytes are generated we should check they are infact not equal so the test has no chance of failing when it should not.

Modifications:
- Loop through bytes in notEqualsBufferSubsections after they are randomly generated to ensure there is atleast 1 difference.

Result:
More reliable unit tests.
2015-10-02 17:49:09 -07:00
Norman Maurer
956a757d37 [#3789] Correctly reset markers for all allocations when using PooledByteBufAllocator
Motivation:

We need to ensure all markers are reset when doing an allocation via the PooledByteBufAllocator. This was not the always the case.

Modifications:

Move all logic that needs to get executed when reuse a PooledByteBuf into one place and call it.

Result:

Correct behavior
2015-09-25 19:57:33 +02:00