Commit Graph

998 Commits

Author SHA1 Message Date
root
cea659bd8a [maven-release-plugin] prepare release netty-4.1.54.Final 2020-11-10 11:12:06 +00:00
Norman Maurer
5ffca6ef4a
Use http in xmlns URIs to make maven release plugin happy again (#10788)
Motivation:

https in xmlns URIs does not work and will let the maven release plugin fail:

```
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  1.779 s
[INFO] Finished at: 2020-11-10T07:45:21Z
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-release-plugin:2.5.3:prepare (default-cli) on project netty-parent: Execution default-cli of goal org.apache.maven.plugins:maven-release-plugin:2.5.3:prepare failed: The namespace xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" could not be added as a namespace to "project": The namespace prefix "xsi" collides with an additional namespace declared by the element -> [Help 1]
[ERROR]
```

See also https://issues.apache.org/jira/browse/HBASE-24014.

Modifications:

Use http for xmlns

Result:

Be able to use maven release plugin
2020-11-10 10:22:35 +01:00
Scott Mitchell
7e1147ea4f
Avoid auto boxing in PoolChunk#removeAvailRun (#10769)
Motivation:
PoolChunk maintains multiple PriorityQueue<Long> collections. The usage
of PoolChunk#removeAvailRun unboxes the Long values to long, and then
this method uses queue.remove(..) which will auto box the value back to
Long. This creates unnecessary allocations via Long.valueOf(long).

Modifications:
- Adjust method signature and usage of PoolChunk#removeAvailRun to avoid
boxing

Result:
Less allocations as a result of PoolChunk#removeAvailRun.
2020-11-03 21:08:43 +01:00
Chris Vest
96da45de2d
Fix explicitly little-endian accessors in SwappedByteBuf (#10747)
Motivation:
Some buffers implement ByteBuf#order(order) by wrapping themselves in a SwappedByteBuf.
The SwappedByteBuf is then responsible for swapping the byte order on accesses.
The explicitly little-endian accessor methods, however, should not be swapped to big-endian, but instead remain explicitly little-endian.

Modification:
The SwappedByteBuf was passing through calls to e.g. writeIntLE, to the big-endian equivalent, e.g. writeInt.
This has been changed so that these calls delegate to their explicitly little-endian counterpart.

Result:
This makes all buffers that make use of SwappedByteBuf for their endian-ness configuration, consistent with all the buffers that use other implementation strategies.
In the end, all buffers now behave exactly the same, when using their explicitly little-endian accessor methods.
2020-10-29 10:35:47 +01:00
Artem Smotrakov
e5951d46fc
Enable nohttp check during the build (#10708)
Motivation:

HTTP is a plaintext protocol which means that someone may be able
to eavesdrop the data. To prevent this, HTTPS should be used whenever
possible. However, maintaining using https:// in all URLs may be
difficult. The nohttp tool can help here. The tool scans all the files
in a repository and reports where http:// is used.

Modifications:

- Added nohttp (via checkstyle) into the build process.
- Suppressed findings for the websites
  that don't support HTTPS or that are not reachable

Result:

- Prevent using HTTP in the future.
- Encourage users to use HTTPS when they follow the links they found in
  the code.
2020-10-23 14:44:18 +02:00
Norman Maurer
ffbddcd842
Replace deprecated Assert.assertThat(...) with MatcherAssert.assertThat(...) (#10699)
Motivation:

junit deprecated Assert.assertThat(...)

Modifications:

Use MatcherAssert.assertThat(...) as replacement for deprecated method

Result:

Less deprecation warnings
2020-10-18 14:30:52 +02:00
Artem Smotrakov
1ca7d5db81
Fix or suppress LGTM findings (#10689)
Motivation:

LGTM reports multiple issues. They need to be triaged,
and real ones should be fixed.

Modifications:
- Fixed multiple issues reported by LGTM, such as redundant conditions,
  resource leaks, typos, possible integer overflows.
- Suppressed false-positives.
- Added a few testcases.

Result:

Fixed several possible issues, get rid of false alarms in the LGTM report.
2020-10-17 09:49:44 +02:00
Norman Maurer
9563d2bd61
Cleanup PoolChunk / PoolSubpage and add a few more asserts (#10690)
Motivation:

As the PooledByteBufAllocator is a critical part of netty we should ensure it works as expected.

Modifications:

- Add a few more asserts to ensure we not see any corrupted state
- Null out slot in the subpage array once the subpage was freed and removed from the pool
- Merge methods into constructor as it was only called from the constructor anyway.

Result:

Code cleanup
2020-10-15 21:01:57 +02:00
root
01b7e18632 [maven-release-plugin] prepare for next development iteration 2020-10-13 06:29:26 +00:00
root
d4a0050ef3 [maven-release-plugin] prepare release netty-4.1.53.Final 2020-10-13 06:29:02 +00:00
Matthew Kavanagh
d3a41b8b9a
Avoid integer overflow in ByteBuf.ensureWritable (#10648)
Motivation:

- To make ensureWritable throw IOOBE when maxCapacity is exceeded, even if
the requested new capacity would overflow Integer.MAX_VALUE

Modification:

- AbstractByteBuf.ensureWritable0 is modified to detect when
targetCapacity has wrapped around
- Test added for correct behaviour in AbstractByteBufTest

Result:

- Calls to ensureWritable will always throw IOOBE when maxCapacity is
exceeded (and bounds checking is enabled)
2020-10-12 09:23:32 +02:00
Francesco Nigro
162e59848a
Improve predictability of writeUtf8/writeAscii performance (#10368)
Motivation:

writeUtf8 can suffer from inlining issues and/or megamorphic call-sites on the hot path due to ByteBuf hierarchy

Modifications:

Duplicate and specialize the code paths to reduce the need of polymorphic calls

Result:

Performance are more stable in user code
2020-09-09 16:10:26 +02:00
root
957ef746d8 [maven-release-plugin] prepare for next development iteration 2020-09-08 05:26:25 +00:00
root
ada9c38c0a [maven-release-plugin] prepare release netty-4.1.52.Final 2020-09-08 05:26:05 +00:00
Graham Edgecombe
a99a8f2a1f
Fix ByteBufUtil.getBytes() incorrectly sharing the array in some cases (#10529)
Motivation:

If ByteBufUtil.getBytes() is called with copy=false, it does not
correctly check that the underlying array can be shared in some cases.

In particular:

* It does not check that the arrayOffset() is zero. This causes it to
  incorrectly return the underlying array if the other conditions are
  met. The returned array will be longer than requested, with additional
  unwanted bytes at its start.

* It assumes that the capacity() of the ByteBuf is equal to the backing
  array length. This is not true for some types of ByteBuf, such as
  PooledHeapByteBuf. This causes it to incorrectly return the underlying
  array if the other conditions are met. The returned array will be
  longer than requested, with additional unwanted bytes at its end.

Modifications:

This commit fixes the two bugs by:

* Checking that the arrayOffset() is zero before returning the
  underlying array.

* Comparing the requested length to the underlying array's length,
  rather than the ByteBuf's capacity, before returning the underlying
  array.

This commit also adds a series of test cases for ByteBufUtil.getBytes().

Result:

ByteBufUtil.getBytes() now correctly checks whether the underlying array
can be shared or not.

The test cases will ensure the bug is not reintroduced in the future.
2020-09-04 13:15:35 +02:00
Nick Hill
b908c82b7b
Lazily construct contained DataOutputStream in ByteBufOutputStream (#10507)
Motivation

This is used solely for the DataOutput#writeUTF8() method, which may
often not be used.

Modifications

Lazily construct the contained DataOutputStream in ByteBufOutputStream.

Result

Saves an allocation in some common cases
2020-08-28 09:22:58 +02:00
Nick Hill
8e8f01e01d
Use ByteBuf#isAccessible() in more places (#10506)
Motivation

ByteBuf has an isAccessible method which was introduced as part of ref
counting optimizations but there are some places still doing
accessibility checks by accessing the volatile refCnt() directly.

Modifications

- Have PooledNonRetained(Duplicate|Sliced)ByteBuf#isAccessible() use
their refcount delegate's isAccessible() method
- Add static isAccessible(buf) and ensureAccessible(buf) methods to
ByteBufUtil
(since ByteBuf#isAccessible() is package-private)
- Adjust DefaultByteBufHolder and similar classes to use these methods
rather than access refCnt() directly

Result

- More efficient accessibility checks in more places
2020-08-28 09:18:13 +02:00
Norman Maurer
4e86f768b9
Reduce the scope of synchronized block in PoolArena (#10410)
Motivation:

We shouldn't call incSmallAllocation() in a synchronized block as its backed by a concurrent datastructure

Modifications:

Move call of incSmallAllocation() out of synchronized block

Result:

Minimize scope of synchronized block
2020-07-16 19:40:40 +02:00
Ruwei
7caced28c6
Review PooledByteBufAllocator in respect of jemalloc 4.x changes and update allocate algorithm.(#10267)
Motivation:

For size from 512 bytes to chunkSize, we use a buddy algorithm. The
drawback is that it has a large internal fragmentation.

Modifications:

1. add SizeClassesMetric and SizeClasses
2. remove tiny size, now we have small, normal and huge size
3. rewrite the structure of PoolChunk
4. rewrite pooled allocate algorithm in PoolChunk
5. when allocate subpage, using lowest common multiple of pageSize and
   elemSize instead of pageSize.
   6. add more tests in PooledByteBufAllocatorTest and PoolArenaTest

Result:
Reduce internal fragmentation and closes #3910
2020-07-15 21:33:27 +02:00
root
bfbeb2dec6 [maven-release-plugin] prepare for next development iteration 2020-07-09 12:27:06 +00:00
root
646934ef0a [maven-release-plugin] prepare release netty-4.1.51.Final 2020-07-09 12:26:30 +00:00
Norman Maurer
6e0d22335d
Include more details if we throw an IllegalArgumentException because of overflow (#10330)
Motivation:

We should include as much details as possible when throwing an IllegalArgumentException because of overflow in CompositeByteBuf

Modifications:

Add more details and factor out check into a static method to share code

Result:

Make it more clear why an operations failed
2020-06-02 10:07:50 +02:00
root
caf51b7284 [maven-release-plugin] prepare for next development iteration 2020-05-13 06:00:23 +00:00
root
8c5b72aaf0 [maven-release-plugin] prepare release netty-4.1.50.Final 2020-05-13 05:59:55 +00:00
Nick Hill
c3db0391af
Correctly handle WrappedCompositeByteBufs in addFlattenedComponents() (#10247)
Motivation

An NPE was reported in #10245, caused by a regression introduced in
#8939. This in particular affects ByteToMessageDecoders that use the
COMPOSITE_CUMULATOR.

Modification

- Unwrap WrappedCompositeByteBufs passed to
CompositeByteBuf#addFlattenedComponents(...) method before accessing
internal components field
- Extend unit test to cover this case and ensure more of the
CompositeByteBuf tests are also run on the wrapped variant

Results

Fixes #10245
2020-05-05 13:56:40 +02:00
Norman Maurer
5a08dc0d9a
Add fastpath implementation for Unpooled.copiedBuffer(CharSequence, Charset) when UTF-8 or US-ASCII is used (#10206)
Motivation:

We can make use of our optimized implementations for UTF-8 and US-ASCII if the user request a copy of a sequence for these charsets

Modifications:

- Add fastpath implementation
- Add unit tests

Result:

Fixes https://github.com/netty/netty/issues/10205
2020-04-23 17:47:16 +02:00
root
9c5008b109 [maven-release-plugin] prepare for next development iteration 2020-04-22 09:57:54 +00:00
root
d0ec961cce [maven-release-plugin] prepare release netty-4.1.49.Final 2020-04-22 09:57:26 +00:00
Norman Maurer
232c669fa4
Guard against overflow when calling CompositeByteBuf.addComponent(...) (#10197)
Motivation:

We need to ensure we not overflow when adding buffers to a CompositeByteBuf

Modifications:

- Correctly validate overflow before adding to the internal storage
- Add testcase

Result:

Fixes https://github.com/netty/netty/issues/10194
2020-04-21 12:04:25 +02:00
Linas Medžiūnas
fb5e2cd3aa
Efficient BytBuf search algorithms (#9914) (#9955)
Motivation:

We have found out that ByteBufUtil.indexOf can be inefficient for substring search on
ByteBuf, both in terms of algorithm complexity (worst case O(needle.readableBytes *
haystack.readableBytes)), and in constant factor (esp. on Composite buffers).
With implementation of more performant search algorithms we have seen improvements on
the order of magnitude.

Modifications:

This change introduces three search algorithms:
1. Knuth Morris Pratt - classical textbook algorithm, a good default choice.
2. Bit mask based algorithm - stable performance on any input, but limited to maximum
search substring (the needle) length of 64 bytes.
3. Aho–Corasick - worse performance and higher memory consumption than [1] and [2], but
it supports multiple substring (the needles) search simultaneously, by inspecting every
byte of the haystack only once.

Each algorithm processes every byte of underlying buffer only once, they are implemented
as ByteProcessor.

Result:

Efficient search algorithms with linear time complexity available in Netty (I will share
benchmark results in a comment on a PR).
2020-04-15 10:21:24 +02:00
时无两丶
ff6d2e4949
Remove duplicate code in PoolArena. (#10174)
Motivation:

Remove duplicate code in PoolArena.

Modification:

Replace duplicate code with `tinyIdx` and `smallIdx`.

Result:

Clean code.
2020-04-15 09:29:23 +02:00
Dmitry Konstantinov
05b7af7ae4
Propagate ref to pool thread cache down in the allocation stack to avoid extra thread local lookup (#10166)
Motivation:
PoolChunk requires a link to a PoolThreadCache to init ByteBuf. Currently the link is retrieved from a thread local: arena.parent.threadCache().
It has some performance cost. At the beginning of the allocation call the PoolThreadCache is already retrieved from the thread local. The reference can be propagated through the calls and used.

Modifications:
Replace second lookup of PoolThreadCache during ByteBuf init by propagation of a reference to PoolThreadCache down in the allocation stack explicitly

Result:
Improve performance of ByteBuf allocation
--Before--
Benchmark                                            (size)  (tokens)  (useThreadCache)  Mode  Cnt    Score   Error  Units
SimpleByteBufPooledAllocatorBenchmark.getAndRelease     123         0              true  avgt   20   57.112 ± 1.004  ns/op
SimpleByteBufPooledAllocatorBenchmark.getAndRelease     123       100              true  avgt   20  222.827 ± 1.307  ns/op

--After--
Benchmark                                            (size)  (tokens)  (useThreadCache)  Mode  Cnt    Score   Error  Units
SimpleByteBufPooledAllocatorBenchmark.getAndRelease     123         0              true  avgt   20   50.732 ± 1.321  ns/op
SimpleByteBufPooledAllocatorBenchmark.getAndRelease     123       100              true  avgt   20  216.892 ± 3.806  ns/op
2020-04-06 08:01:01 +02:00
Dmitry Konstantinov
ea31b59037
Replace usage() with freeBytes() in thresholds within hot paths of PoolChunkList (#10141)
Motivation:
PoolChunk.usage() method has non-trivial computations. It is used currently in hot path methods invoked when an allocation and de-allocation are happened.
The idea is to replace usage() output comparison against percent thresholds by Chunk.freeBytes plain comparison against absolute thresholds. In such way the majority of computations from the threshold conditions are moved to init logic.

Modifications:
Replace PoolChunk.usage() conditions in PoolChunkList with equivalent conditions for PoolChunk.freeBytes()

Result:
Improve performance of allocation and de-allocation of ByteBuf from normal size cache pool
2020-03-31 22:11:16 +02:00
Dmitry Konstantinov
913cae6fef
Optimize log2 in PoolThreadCache (#10128)
Motivation:
The current implementation of log2 in PoolThreadCache uses a loop and less efficient than an version based on Integer.numberOfLeadingZeros (intrinsic).

Modifications:
Replace the current log2 implementation in PoolThreadCache with a version based on Integer.numberOfLeadingZeros

Result:
It can improve performance slightly during allocation and de-allocation of ByteBuf using pooled allocator.
2020-03-24 11:13:52 +01:00
root
14e4afeba2 [maven-release-plugin] prepare for next development iteration 2020-03-17 09:20:54 +00:00
root
c10c697e5b [maven-release-plugin] prepare release netty-4.1.48.Final 2020-03-17 09:18:28 +00:00
root
c623a50d19 [maven-release-plugin] prepare for next development iteration 2020-03-09 12:13:56 +00:00
root
a401b2ac92 [maven-release-plugin] prepare release netty-4.1.47.Final 2020-03-09 12:13:26 +00:00
root
e0d73bca4d [maven-release-plugin] prepare for next development iteration 2020-02-28 06:37:33 +00:00
root
ebe7af5102 [maven-release-plugin] prepare release netty-4.1.46.Final 2020-02-28 06:36:45 +00:00
Norman Maurer
a3e5e4876c
FixedCompositeByteBuf.isDirect() may return wrong value when constructed with empty array (#10005)
Motivation:

FixedCompositeByteBuf.isDirect() should return the same value as EMPTY_BUFFER.isDirect() when constructed via an empty array

Modifications:

- Return correct value when constructed via empty array.
- Add unit test

Result:

FixedCompositeByteBuf.isDirect() returns correct value
2020-02-08 17:05:26 +01:00
Norman Maurer
07149729cc
Use correct system property name in PooledByteBufAllocator (io.netty.allocator.cacheTrimIntervalMillis) (#9994)
Motivation:

We had a typo in the system property name that was used to lookup the cache trime interval. We should ensure we use the correct naming when lookup the property

Modifications:

- Support the old and the new (correct) naming of the property when configure the cache trim interval.
- Log something if someone uses the old (deprecated) name

Result:

Fixes https://github.com/netty/netty/issues/9981
2020-02-05 14:39:23 +01:00
root
9b1ea10a12 [maven-release-plugin] prepare for next development iteration 2020-01-13 09:13:53 +00:00
root
136db8680a [maven-release-plugin] prepare release netty-4.1.45.Final 2020-01-13 09:13:30 +00:00
Nick Hill
607bc05a2c Fix BufferOverflowException during non-Unsafe PooledDirectByteBuf resize (#9912)
Motivation

Recent optimization #9765 introduced a bug where the native indices of
the internal reused duplicate nio buffer are not properly reset prior to
using it to copy data during a reallocation operation. This can result
in BufferOverflowExceptions thrown during ByteBuf capacity changes.

The code path in question applies only to pooled direct buffers when
Unsafe is disabled or not available.

Modification

Ensure ByteBuffer#clear() is always called on the reused internal nio
buffer prior to returning it from PooledByteBuf#internalNioBuffer()
(protected method); add unit test that exposes the bug.

Result

Fixes #9911
2020-01-11 06:04:32 +01:00
root
79d4e74019 [maven-release-plugin] prepare for next development iteration 2019-12-18 08:32:54 +00:00
root
5ddf45a2d5 [maven-release-plugin] prepare release netty-4.1.44.Final 2019-12-18 08:31:43 +00:00
Norman Maurer
9a0ccf24f3
Add unit test for leak aware CompositeByteBuf that proves that there is no NPE (#9875)
Motivation:

https://github.com/netty/netty/issues/9873 reported a NPE in previous version of netty. We should add a unit test to verify there is no more NPE

Modifications:

Add a unit test

Result:

Prove that https://github.com/netty/netty/issues/9873 is fixed
2019-12-12 16:18:27 +01:00
Sergey Skrobotov
84547029d9 Change DefaultByteBufHolder.equals() to treat instances of different classes as not equal (#9855)
# Motivation:
`DefaultByteBufHolder.equals()` considers another object equal if it's an instance of `ByteBufferHolder` and if the contents of two objects are equal. However, the behavior of `equals` method is not a part of the `ByteBufHolder` contract so `DefaultByteBufHolder`'s version may be causing violation of the symmetric property if other classes have different logic.
There are already a few classes that are affected by this: `DefaultHttp2GoAwayFrame`, `DefaultHttp2UnknownFrame`, and `SctpMessage` are all overriding `equals` method breaking the symmetric property.
Another effect of this behavior is that all instances with empty data are considered equal. That may not be desireable in the situations when instances are created for predefined constants, e.g. `FullBulkStringRedisMessage.NULL_INSTANCE` and `FullBulkStringRedisMessage.EMPTY_INSTANCE` in `codec-redis`. 

# Modification:
Make `DefaultByteBufHolder.equals()` implementation only work for the objects of the same class.

# Result:
- The symmetric property of the `equals` method is restored for the classes in question.
- Instances of different classes are not considered equal even if the content of the data they hold are the same.
2019-12-10 11:29:44 +01:00
时无两丶
0cde4d9cb4 Uniform null pointer check. (#9840)
Motivation:
Uniform null pointer check.

Modifications:

Use ObjectUtil.checkNonNull(...)

Result:
Less code, same result.
2019-12-09 09:47:35 +01:00
Nick Hill
63d33b390a Minor simplifications/optimizations to AbstractByteBuf methods (#9845)
Motivation

While working on other changes I noticed some opportunities to
streamline a few things in AbstractByteBuf.

Modifications

- Avoid duplicate ensureAccessible() checks in discard(Some)ReadBytes()
and ensureWritable0(int) methods
- Simplify ensureWritable0(int) logic
- Make some conditional checks more concise

Result

Cleaner, possibly faster code
2019-12-05 11:32:21 +01:00
Nick Hill
b0feb5a81f Reduce ByteBuffer duplication when resizing pooled direct ByteBufs (#9765)
Motivation:

Currently when use of Unsafe is disabled and an internal reallocation is
performed for a direct PooledByteBuf, a one-off temporary duplicate is
made of the source and destination backing nio buffers so that the
copy can be done in a threadsafe manner.

The need for this can be reduced by sharing the temporary duplicate
buffer that is already stored in the corresponding destination
PooledByteBuf instance.

Modifications:

Have PoolArena#memoryCopy(...) take the destination PooledByteBuf
instead of the underlying mem reference and offset, and use
internalNioBuffer() to obtain/initialize a reusable duplicate of the
backing nio buffer.

Result:

Fewer temporary allocations when resizing direct pooled ByteBufs in the
non-Unsafe case
2019-11-16 11:26:02 -08:00
Nick Hill
535d598492 Introduce ByteBuf#isContiguous() method (#9735)
Motivation

There's currently no way to determine whether an arbitrary ByteBuf
behaves internally like a "singluar" buffer or a composite one, and this
can be important to know when making decisions about how to manipulate
it in an efficient way.

An example of this is the ByteBuf#discardReadBytes() method which
increases the writable bytes for a contiguous buffer (by readerIndex)
but does not for a composite one.

Unfortunately !(buf instanceof CompositeByteBuf) is not reliable, since
for example this will be true in the case of a sliced CompositeByteBuf
or some third-party composite implementation.

isContiguous was chosen over isComposite since we want to assume "not
contiguous" in the unknown/default case - the doc will it clear that
false does not imply composite.

Modifications

- Add ByteBuf#isContiguous() which returns true by default
- Override the "concrete" ByteBuf impls to return true and ensure
wrapped/derived impls delegate it appropriately
- Include some basic unit tests

Result

Better assumptions/decisions possible when manipulating arbitrary
ByteBufs, for example when combining/cumulating them.
2019-11-06 12:06:25 +01:00
Norman Maurer
6c061abc49
Hide Recycler implemention to allow experimenting with different implementions of an Object pool (#9715)
Motivation:

At the moment we directly extend the Recycler base class in our code which makes it hard to experiment with different Object pool implementation. It would be nice to be able to switch from one to another by using a system property in the future. This would also allow to more easily test things like https://github.com/netty/netty/pull/8052.

Modifications:

- Introduce ObjectPool class with static method that we now use internally to obtain an ObjectPool implementation.
- Wrap the Recycler into an ObjectPool and return it for now

Result:

Preparation for different ObjectPool implementations
2019-10-26 00:34:30 -07:00
Nick Hill
f4b4a44c7c Change javadoc of ByteBuf#indexOf(...) to match its behaviour (#9679)
Motivation

Currently doc != code and so one needs to change. Though behaviour as
currently documented might be more intuitive, we don't want to break
anyone so will adjust the doc instead. See #9503 for discussion.

Modifications

Correct the javadoc of indexOf(...) method in ByteBuf abstract class.

Results

Correct javadoc
2019-10-24 23:42:30 -07:00
root
844b82b986 [maven-release-plugin] prepare for next development iteration 2019-10-24 12:57:00 +00:00
root
d066f163d7 [maven-release-plugin] prepare release netty-4.1.43.Final 2019-10-24 12:56:30 +00:00
root
92941cdcac [maven-release-plugin] prepare for next development iteration 2019-09-25 06:15:31 +00:00
root
bd907c3b3a [maven-release-plugin] prepare release netty-4.1.42.Final 2019-09-25 06:14:31 +00:00
root
01d805bb76 [maven-release-plugin] prepare for next development iteration 2019-09-12 16:09:55 +00:00
root
7cf69022d4 [maven-release-plugin] prepare release netty-4.1.41.Final 2019-09-12 16:09:00 +00:00
root
aef47bec7f [maven-release-plugin] prepare for next development iteration 2019-09-12 05:38:11 +00:00
root
267e5da481 [maven-release-plugin] prepare release netty-4.1.40.Final 2019-09-12 05:37:30 +00:00
Nick Hill
1039f69e53 Fix for incorrect values from CompositeByteBuf#component(int) (#9525)
Motivation

This is a "simpler" alternative to #9416 which fixes the same
CompositeByteBuf bugs described there, originally reported by @jingene
in #9398.

Modifications
- Add fields to Component class for the original buffer along with its
adjustment, which may be different to the already-stored unwrapped
buffer. Use it in appropriate places to ensure correctness and
equivalent behaviour to that prior to the earlier optimizations
- Add comments explaining purpose of each of the Component fields
- Unwrap more kinds of buffers in newComponent method to extend scope of
the existing indirection-reduction optimization
- De-duplicate common buffer consolidation logic
- Unit test for the original bug provided by @jingene

Result
- Correct behaviour / fixed bugs
- Some code deduplication / simplification
- Unwrapping optimization applied to more types of buffers

The downside is increased mem footprint from the two new fields, and
additional allocations in some specific cases, though those should be
rare.


Co-authored-by: jingene <jingene0206@gmail.com>
2019-09-02 13:52:17 +02:00
Codrut Stancu
b7e9829a49 Update GraalVM Native Image configuration. (#9515)
Motivation:

The Netty classes are initialized at build time by default for GraalVM Native Image compilation. This is configured via the `--initialize-at-build-time=io.netty` option. While this reduces start-up time it can lead to some problems:

 - The class initializer of `io.netty.buffer.PooledByteBufAllocator` looks at the maximum memory size to compute the size of internal buffers. If the class initializer runs during image generation, then the buffers are sized according to the very large heap size that the image generator uses, and Netty allocates several arrays that are 16 MByte. The fix is to initialize the following 3 classes at run time: `io.netty.buffer.PooledByteBufAllocator,io.netty.buffer.ByteBufAllocator,io.netty.buffer.ByteBufUtil`. This fix was dependent on a GraalVM Native Image fix that was included in 19.2.0.

 - The class initializer of `io.netty.handler.ssl.util.ThreadLocalInsecureRandom` needs to be initialized at runtime to ensure that the generated values are trully random and not fixed for each generated image.

 - The class initializers of `io.netty.buffer.AbstractReferenceCountedByteBuf` and `io.netty.util.AbstractReferenceCounted` compute field offsets. While the field offset recomputation is necessary for correct execution as a native image these initializers also have logic that depends on the presence/absence of `sun.misc.Unsafe`, e.g., via the `-Dio.netty.noUnsafe=true` flag. The fix is to push these initializers to runtime so that the field offset lookups (and the logic depending on them) run at run time. This way no manual substitutions are necessary either.
 
Modifications:

Add `META-INF/native-image` configuration files that correctly trigger the inialization of the above classes at run time via `--initialize-at-run-time=...` flags.
 
Result:

Fixes the initialisation issues described above for Netty executables built with GraalVM.
2019-08-30 09:21:11 +02:00
Norman Maurer
da2aba5742
Reduce GC produced by AbstractByteBuf.indexOf(..) implementation (#9502)
Motivation:

AbstractByteBuf.indexOf(...) currently delegates to ByteBufUtils.indexOf(...) which will create a new ByteBufProcessor on each call. This is done to reduce overhead of bounds-checks. Unfortunally while this reduces bounds checks it produces a lot of GC. We can just implement our own version in AbstractByteBuf which makes use of _getByte(...) and so does no bound checks as well but also not need to create any garbage.

Modifications:

Write optimized implementation of indexOf(...) for AbstractByteBuf

Result:

Fixes https://github.com/netty/netty/issues/9499.
2019-08-24 13:46:28 +02:00
Norman Maurer
d8e59ca638
Avoid creating FileInputStream and FileOutputStream for obtaining Fil… (#8110)
Motivation:

If all we need is the FileChannel we should better use RandomAccessFile as FileInputStream and FileOutputStream use a finalizer.

Modifications:

Replace FileInputStream and FileOutputStream with RandomAccessFile when possible.

Result:

Fixes https://github.com/netty/netty/issues/8078.
2019-08-17 09:43:01 +02:00
Nick Hill
4db38b4e0c Don't zero non-readable buffer regions when capacity is decreased (#9427)
Motivation

#1802 fixed ByteBuf implementations to ensure that the whole buffer
region is preserved when capacity is increased, not just the readable
part. The behaviour is still different however when the capacity is
_decreased_ - data outside the currently-readable region is zeroed.

Modifications

Update ByteBuf capacity(int) implementations to also copy the whole
buffer region when the new capacity is less than the current capacity.

Result

Consistent behaviour of ByteBuf#capacity(int) regardless of whether the
new capacity is greater than or less than the current capacity.
2019-08-16 08:18:09 +02:00
root
d45a4ce01b [maven-release-plugin] prepare for next development iteration 2019-08-13 17:16:42 +00:00
root
88c2a4cab5 [maven-release-plugin] prepare release netty-4.1.39.Final 2019-08-13 17:15:20 +00:00
Nick Hill
695aa0959d Use alloc().heapBuffer(...) to allocate new heap buffer.
Motivation

Underlying array allocations in UnpooledHeapByteBuf are intended be done
via the protected allocateArray(int) method, so that they can be tracked
and/or overridden by subclasses, for example
UnpooledByteBufAllocator$InstrumentedUnpooledHeapByteBuf or #8015. But
it looks like an explicit allocation was missed in the copy(int,int)
method.

Modification

Just use alloc().heapBuffer(...) for the allocation

Result

No possibility of "missing" array allocations when ByteBuf#copy is used.
2019-08-13 10:52:11 +02:00
Nick Hill
fedcc40196 Fix ByteBufUtil#writeUtf8 subsequence split surrogate edge-case bug (#9437)
Motivation:

#9224 introduced overrides of ByteBufUtil#writeUtf8(...) and related
methods to operate on a sub-CharSequence directly to save having to
allocate substrings, but it missed an edge case where the subsequence
does not extend to the end of the CharSequence and the last char in the
sequence is a high surrogate.

Due to the catch-IndexOutOfBoundsException optimization that avoids an
additional bounds check, it would be possible to read past the specified
end char index and successfully decode a surrogate pair which would
otherwise result in a '?' byte being written.

Modifications:

- Check for end-of-subsequence before reading next char after a high
surrogate is encountered in the
writeUtf8(AbstractByteBuf,int,CharSequence,int,int) and
utf8BytesNonAscii methods
- Add unit test for this edge case

Result:

Bug is fixed.

This removes the bounds-check-avoidance optimization but it does not
appear to have a measurable impact on benchmark results, including when
the char sequence contains many surrogate pairs (which should be rare in
any case).
2019-08-10 20:54:04 +02:00
root
718b7626e6 [maven-release-plugin] prepare for next development iteration 2019-07-24 09:05:57 +00:00
root
465c900c04 [maven-release-plugin] prepare release netty-4.1.38.Final 2019-07-24 09:05:23 +00:00
Norman Maurer
131be58f48
Correctly take length of ByteBufInputStream into account for readLine… (#9310)
* Correctly take length of ByteBufInputStream into account for readLine() / readByte()

Motivation:

ByteBufInputStream did not correctly take the length into account when validate bounds for readLine() / readByte() which could lead to read more then allowed.

Modifications:

- Correctly take length into account
- Add unit tests
- Fix existing unit test

Result:

Correctly take length of ByteBufInputStream into account.
Related to https://github.com/netty/netty/pull/9306.
2019-07-01 20:55:23 +02:00
xiaoheng1
f8c1f350db Fix public int read() throws IOException method exceeds the limit of length (#9306)
Motivation:

buffer.isReadable() should not be used to limit the amount of data that can be read as the amount may be less then was is readable.

Modification:

- Use  available() which takes the length into account
- Add unit test

Result:

Fixes https://github.com/netty/netty/issues/9305
2019-07-01 15:57:34 +02:00
秦世成
4596f9e139 Fix the issue of incorrectly calculating the number of dump lines when using PrettyDump in ByteBufUtil (#9304)
Motivation:

Fix the issue of incorrectly calculating the number of dump rows when using prettyHexDumpmethod in ByteBufUtil. The way to find the remainder is either length % 16 or length & 15

Modification:

Fixed the way to calculate the remainder

Result:

Fixed #9301
2019-07-01 08:35:18 +02:00
root
5b58b8e6b5 [maven-release-plugin] prepare for next development iteration 2019-06-28 05:57:21 +00:00
root
35e0843376 [maven-release-plugin] prepare release netty-4.1.37.Final 2019-06-28 05:56:28 +00:00
jimin
856f1185e1 All override methods must be added @override (#9285)
Motivation:

Some methods that either override others or are implemented as part of implementation an interface did miss the `@Override` annotation

Modifications:

Add missing `@Override`s

Result:

Code cleanup
2019-06-27 13:51:26 +02:00
jimin
9621a5b981 remove unused imports (#9287)
Motivation:

Some imports are not used

Modification:

remove unused imports

Result:

Code cleanup
2019-06-26 21:08:31 +02:00
Norman Maurer
265c745d9a
EmptyByteBuf.getCharSequence(0,...) must return empty String (#9272)
Motivation:

At the moment EmptyByteBuf.getCharSequence(0,...) will return null while it must return a "".

Modifications:

- Let EmptyByteBuf.getCharSequence(0,...) return ""
- Add unit test

Result:

Fixes https://github.com/netty/netty/issues/9271.
2019-06-24 21:09:19 +02:00
Nick Hill
2af769f6dc Subsequence versions of ByteBufUtil#writeUtf8(...) methods (#9224)
Motivation

It would be useful to be able to write UTF-8 encoded subsequence of
CharSequence characters to a ByteBuf without needing to create a
temporary object via CharSequence#subSequence().

Modification

Add overloads of ByteBufUtil writeUtf8, reserveAndWriteUtf8 and
utf8Bytes methods which take explicit subsequence bounds.

Result

More efficient writing of substrings to byte buffers possible
2019-06-21 14:05:35 +02:00
Nick Hill
6381d0766a De-duplicate PooledByteBuf implementations (#9120)
Motivation

There's quite a lot of duplicate/equivalent logic across the various
concrete ByteBuf implementations. We could take this even further but
for now I've focused on the PooledByteBuf sub-hierarchy.

Modifications

- Move common logic/methods into existing PooledByteBuf abstract
superclass
- Shorten PooledByteBuf.capacity(int) method implementation

Result

Less code to maintain
2019-06-19 20:50:27 +02:00
Nick Hill
272f68f48c De-duplicate UnpooledDirectByteBuf/UnpooledUnsafeDirectByteBuf (#9085)
Motivation

While digging around looking at something else I noticed that these
share a lot of logic and it would be nice to reduce that duplication.

Modifications

Have UnpooledUnsafeDirectByteBuf extend UnpooledDirectByteBuf and make
adjustments to ensure existing behaviour remains unchanged.

The most significant addition needed to UnpooledUnsafeDirectByteBuf was
re-overriding the getPrimitive/setPrimitive methods to revert back to
the AbstractByteBuf versions which include bounds checks
(UnpooledDirectByteBuf excludes these as an optimization, relying on
those done by underlying ByteBuffer).

Result

~200 fewer lines, less duplicate logic.
2019-06-03 13:04:10 +02:00
Idel Pivnitskiy
ec69da9afb Make UnpooledUnsafeHeapByteBuf class public (#9184)
Motivation:

1. Users will be able to use an optimized version of
`UnpooledHeapByteBuf` and override behavior of methods if required.
2. Consistency with `UnpooledDirectByteBuf`, `UnpooledHeapByteBuf`, and
`UnpooledUnsafeDirectByteBuf`.

Modifications:

- Add `public` access modifier to `UnpooledUnsafeHeapByteBuf` class and
ctor;

Result:

Public access for optimized version of `UnpooledHeapByteBuf`.
2019-05-31 07:04:03 +02:00
Nick Hill
385dadcfbc Fix redundant or missing checks and other inconsistencies in ByteBuf impls (#9119)
Motivation

There are a few minor inconsistencies / redundant operations in the
ByteBuf implementations which would be good to fix.

Modifications

- Unnecessary ByteBuffer.duplicate() performed in
CompositeByteBuf.nioBuffer(int,int)
- Add missing checkIndex(...) check to
ReadOnlyByteBufferBuf.nioBuffer(int,int)
- Remove duplicate bounds check in
ReadOnlyByteBufferBuf.getBytes(int,byte[],int,int)
- Omit redundant bounds check in
UnpooledHeapByteBuf.getBytes(int,ByteBuffer)

Result

More consistency and slightly less overhead
2019-05-27 15:32:08 +02:00
Nick Hill
128403b492 Introduce ByteBuf.maxFastWritableBytes() method (#9086)
Motivation

ByteBuf capacity is automatically increased as needed up to maxCapacity
when writing beyond the buffer's current capacity. However there's no
way to tell in general whether such an increase will result in a
relatively costly internal buffer re-allocation.

For unpooled buffers it always does, in pooled cases it depends on the
size of the associated chunk of allocated memory, which I don't think is
currently exposed in any way.

It would sometimes be useful to know where this limit is when making
external decisions about whether to reuse or preemptively reallocate.

It would also be advantageous to take this limit into account when
auto-increasing the capacity during writes, to defer such reallocation
until really necessary.

Modifications

Introduce new AbstractByteBuf.maxFastWritableBytes() method which will
return a value >= writableBytes() and <= maxWritableBytes().

Make use of the new method in the sizing decision made by the
AbstractByteBuf.ensureWritable(...) methods.

Result

Less reallocation/copying.
2019-05-22 20:11:24 +02:00
Nick Hill
507e0a05b5 Fix possible unsafe sharing of internal NIO buffer in CompositeByteBuf (#9169)
Motivation

A small thread-safety bug was introduced during the internal
optimizations of ComponentByteBuf made a while back in #8437. When there
is a single component which was added as a slice,
internalNioBuffer(int,int) will currently return the unwrapped slice's
un-duplicated internal NIO buffer. This is not safe since it could be
modified concurrently with other usage of that parent buffer.

Modifications

Delegate internalNioBuffer to nioBuffer in this case, which returns a
duplicate. This matches what's done in derived buffers in general
(for the same reason). Add unit test.

Result

Fixed possible thread-safety bug
2019-05-22 11:07:06 +02:00
Tim Brooks
2dc686ded1 Prefer direct io buffers if direct buffers pooled (#9167)
Motivation

Direct buffers are normally preferred when interfacing with raw
sockets. Currently netty will only return direct io buffers (for reading
from a channel) when a platform has unsafe. However, this is
inconsistent with the write-side (filterOutboundMessage) where a direct
byte buffer will be returned if pooling is enabled. This means that
environments without unsafe (and no manual netty configurations) end up
with many pooled heap byte buffers for reading, many pooled direct byte
buffers for writing, and jdk pooled byte buffers (for reading).

Modifications

This commit modifies the AbstractByteBufAllocator to return a direct
byte buffer for io handling when the platform has unsafe or direct byte
buffers are pooled.

Result:

Use direct buffers when direct buffers are pooled for IO.
2019-05-22 07:32:41 +02:00
Nick Hill
60de092e36 Fix incorrect behavior of ReadOnlyByteBufferBuf.getBytes(int,ByteBuffer) (#9125)
* Fix incorrect behavior of ReadOnlyByteBufferBuf.getBytes(int,ByteBuffer)

Motivation

It currently will succeed when the destination is larger than the source
range, but the ByteBuf javadoc states this should be a failure, as is
the case with all the other implementations.

Modifications

- Fix logic to fail the bounds check in this case
- Remove explicit null check which isn't done in any equivalent method
- Add unit test

Result

More correct/consistent behaviour
2019-05-13 07:00:06 +02:00
root
ba06eafa1c [maven-release-plugin] prepare for next development iteration 2019-04-30 16:42:29 +00:00
root
49a451101c [maven-release-plugin] prepare release netty-4.1.36.Final 2019-04-30 16:41:28 +00:00
Norman Maurer
e01c4bce08
Fix regression in CompositeByteBuf.discard*ReadBytes() (#9068)
Motivation:

1f93bd3 introduced a regression that could lead to not have the lastAccessed field correctly null'ed out when the endOffset of the internal Component == CompositeByteBuf.readerIndex()

Modifications:

- Correctly null out the lastAccessed field in any case
- Add unit tests

Result:

Fixes regression in CompositeByteBuf.discard*ReadBytes()
2019-04-17 18:03:08 +02:00
root
baab215f66 [maven-release-plugin] prepare for next development iteration 2019-04-17 07:26:24 +00:00
root
dfe657e2d4 [maven-release-plugin] prepare release netty-4.1.35.Final 2019-04-17 07:25:40 +00:00
Nick Hill
b26a61acd1 Centralize internal reference counting logic (#8614)
Motivation

AbstractReferenceCounted and AbstractReferenceCountedByteBuf contain
duplicate logic for managing the volatile refcount in an optimized and
consistent manner, which increased in complexity in #8583. It's possible
to extract this into a common helper class now that all access is via an
AtomicIntegerFieldUpdater.

Modifications

- Move duplicate logic into a shared ReferenceCountUpdater class
- Incorporate some additional simplification for the most common single
increment/decrement cases (fewer checks/operations)

Result

Less code duplication, better encapsulation of the "non-trivial"
internal volatile refcount manipulation
2019-04-09 16:22:32 +02:00
Nick Hill
9f2221ebd4 CompositeByteBuf optimizations and new addFlattenedComponents method (#8939)
Motivation:

The CompositeByteBuf discardReadBytes / discardReadComponents methods are currently quite inefficient, including when there are no read components to discard. We would like to call the latter more frequently in ByteToMessageDecoder#COMPOSITE_CUMULATOR.

In the same context it would be beneficial to perform a "shallow copy" of a composite buffer (for example when it has a refcount > 1) to avoid having to allocate and copy the contained bytes just to obtain an "independent" cumulation.

Modifications:

- Optimize discardReadBytes() and discardReadComponents() implementations (start at first comp rather than performing a binary search for the readerIndex).
- New addFlattenedComponents(boolean,ByteBuf) method which performs a shallow copy if the provided buffer is also composite and avoids adding any empty buffers, plus unit test.
- Other minor optimizations to avoid unnecessary checks.

Results:

discardReadXX methods are faster, composite buffers can be easily appended without deepening the buffer "tree" or retaining unused components.
2019-04-08 20:48:08 +02:00
Norman Maurer
a2b85a306d
Fix NPE that was encounter by debugger (will never happen in real code). (#8992)
Motivation:

We synchronize on the chunk.arena when produce the String returned by PoolSubpage.toString() which may raise a NPE when chunk == null. Chunk == null for the head of the linked-list and so a NPE may raised by a debugger. This NPE can never happen in real code tho as we never access toString() of the head.

Modifications:

Add null checks and so fix the possible NPE

Result:

No NPE when using a debugger and inspect the PooledByteBufAllocator.
2019-04-01 19:44:28 +02:00
Norman Maurer
922e463524
Don't try to put back MemoryRegionCache.Entry objects into the Recycler when recycled because of a finalizer. (#8955)
Motivation:

In MemoryRegionCache.Entry we use the Recycler to reduce GC pressure and churn. The problem is that these will also be recycled when the PoolThreadCache is collected and finalize() is called. This then can have the effect that we try to load class but the WebApp is already stoped.

This will produce an stacktrace like this on Tomcat:

```
19-Mar-2019 15:53:21.351 INFO [Finalizer] org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading Illegal access: this web application instance has been stopped already. Could not load [java.util.WeakHashMap]. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.
 java.lang.IllegalStateException: Illegal access: this web application instance has been stopped already. Could not load [java.util.WeakHashMap]. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.
	at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading(WebappClassLoaderBase.java:1383)
	at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForClassLoading(WebappClassLoaderBase.java:1371)
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1224)
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1186)
	at io.netty.util.Recycler$3.initialValue(Recycler.java:233)
	at io.netty.util.Recycler$3.initialValue(Recycler.java:230)
	at io.netty.util.concurrent.FastThreadLocal.initialize(FastThreadLocal.java:188)
	at io.netty.util.concurrent.FastThreadLocal.get(FastThreadLocal.java:142)
	at io.netty.util.Recycler$Stack.pushLater(Recycler.java:624)
	at io.netty.util.Recycler$Stack.push(Recycler.java:597)
	at io.netty.util.Recycler$DefaultHandle.recycle(Recycler.java:225)
	at io.netty.buffer.PoolThreadCache$MemoryRegionCache$Entry.recycle(PoolThreadCache.java:478)
	at io.netty.buffer.PoolThreadCache$MemoryRegionCache.freeEntry(PoolThreadCache.java:459)
	at io.netty.buffer.PoolThreadCache$MemoryRegionCache.free(PoolThreadCache.java:430)
	at io.netty.buffer.PoolThreadCache$MemoryRegionCache.free(PoolThreadCache.java:422)
	at io.netty.buffer.PoolThreadCache.free(PoolThreadCache.java:279)
	at io.netty.buffer.PoolThreadCache.free(PoolThreadCache.java:270)
	at io.netty.buffer.PoolThreadCache.free(PoolThreadCache.java:241)
	at io.netty.buffer.PoolThreadCache.finalize(PoolThreadCache.java:230)
	at java.lang.System$2.invokeFinalize(System.java:1270)
	at java.lang.ref.Finalizer.runFinalizer(Finalizer.java:102)
	at java.lang.ref.Finalizer.access$100(Finalizer.java:34)
	at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:217)
```

Beside this we also need to ensure we not try to lazy load SizeClass when the finalizer is used as it may not be present anymore if the ClassLoader is already destroyed.

This would produce an error like:

```
20-Mar-2019 11:26:35.254 INFO [Finalizer] org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading Illegal access: this web application instance has been stopped already. Could not load [io.netty.buffer.PoolArena$1]. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.
 java.lang.IllegalStateException: Illegal access: this web application instance has been stopped already. Could not load [io.netty.buffer.PoolArena$1]. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.
	at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading(WebappClassLoaderBase.java:1383)
	at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForClassLoading(WebappClassLoaderBase.java:1371)
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1224)
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1186)
	at io.netty.buffer.PoolArena.freeChunk(PoolArena.java:287)
	at io.netty.buffer.PoolThreadCache$MemoryRegionCache.freeEntry(PoolThreadCache.java:464)
	at io.netty.buffer.PoolThreadCache$MemoryRegionCache.free(PoolThreadCache.java:429)
	at io.netty.buffer.PoolThreadCache$MemoryRegionCache.free(PoolThreadCache.java:421)
	at io.netty.buffer.PoolThreadCache.free(PoolThreadCache.java:278)
	at io.netty.buffer.PoolThreadCache.free(PoolThreadCache.java:269)
	at io.netty.buffer.PoolThreadCache.free(PoolThreadCache.java:240)
	at io.netty.buffer.PoolThreadCache.finalize(PoolThreadCache.java:229)
	at java.lang.System$2.invokeFinalize(System.java:1270)
	at java.lang.ref.Finalizer.runFinalizer(Finalizer.java:102)
	at java.lang.ref.Finalizer.access$100(Finalizer.java:34)
	at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:217)
```

Modifications:

- Only try to put the Entry back into the Recycler if the PoolThredCache is not destroyed because of the finalizer.
- Only try to access SizeClass if not triggered by finalizer.

Result:

No IllegalStateException anymoe when a webapp is reloaded in Tomcat that uses netty and uses the PooledByteBufAllocator.
2019-03-22 12:16:21 +01:00