Commit Graph

2044 Commits

Author SHA1 Message Date
skyguard1
cd0203b5c7
Add default handling for switch statement (#10408)
Motivation:

When a switch statement is used we should always define a `default:` so we don't introduce bugs due fall-through.

Modification:

Add missing `default:`s

Result:

Less error-prone code
2020-07-16 10:54:50 +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
e0dc054927
Expand ChannelPipeline javadocs to cover UnorderedThreadPoolEventExecutor (#10361)
Motivation:

Seems like some users are suprised by the behaviour of DefaultEventExecutor when used within the ChannelPipeline. We should clarify the semantics and also mention UnordedThreadPoolEventExecutor which may be more inline with their expectations

Modifications:

Add javadocs section about UnorderedThreadPoolEventExecutor and expand details for DefaultEventExecutor

Result:

Clarify sematics
2020-06-23 09:28:34 +02:00
Norman Maurer
75df58a7e1
Guard against re-entrancy issues while draining AbstractCoalescingBufferQueue (#10294)
Motivation:

AbstractCoalescingBufferQueue had a bug which could lead to an empty queue while still report bytes left. This was due the fact that we decremented the pending bytes before draining the queue one-by-one. The problem here is that while the queue is drained we may notify the promise which may add again buffers to the queue for which we never decrement the bytes while we drain these

Modifications:

- Decrement the pending bytes every time we drain a buffer from the queue
- Add unit tests

Result:

Fixes https://github.com/netty/netty/issues/10286
2020-05-15 09:51:33 +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
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
2c78b4c84f
Correctly propagate exceptions from inbound operations in all cases (#10176)
Motivation:

In AbstractChannelHandlerContext we had some code where we tried to guard against endless loops caused by exceptions thrown by exceptionCaught(...) that would trigger exceptionCaught again. This code was proplematic for two reasons:
 - It is quite expensive as we need to compare all the stacks
 - We may end up not notify another handlers exceptionCaught(...) if in our exeuction stack we triggered actions that will cause an exceptionCaught somewhere else in the pipeline

Modifications:

- Just remove the detection code as we already handle everything correctly when we invoke exceptionCaught(...)
- Add unit tests

Result:

Ensure we always notify correctly and also fixes performance issue reported as https://github.com/netty/netty/issues/10165
2020-04-16 08:56:45 +02:00
Cenjie Ho
2d4d64dc42
Add the unit test of ChannelOutboundBuffer (#10180)
Motivation:

Parameter maxCount needs the unit test.

Modifications:

1. Change the conditional statement to avoid the ineffective maxCount (enhance the robustness of the code merely).
2. Add the unit test for maxCount.

Result:

Enable this parameter to be tested.
2020-04-15 08:22:51 +02:00
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
Bo Zhang
286f14f04a
Close Channel upon exceptions during bootstrap to avoid leaking (#10110)
Motivation:

We need to ensure we always close the Channel when we see an exception during bootstrapping it.

Modification:

Ensure we correct close the Channel if we see an exception during retrieving the Resolver from the group while bootstrapping.

Result:

Fixes #10109


Co-authored-by: Norman Maurer <norman_maurer@apple.com>
2020-03-16 13:37:29 +01:00
feijermu
427a641299
Replace oio's default thread factory with netty's DefaultThreadFactory. (#10107)
Motivation:

Netty's DefaultThreadFactory that creates FastThreadLocalThread instance is widely used in NioEventLoopGroup, EpollEventLoopGroup, etc, but not OioEventLoopGroup. Although oio is quite stale, I still think this change may be useful.

Modification:

Replace oio's default thread factory with netty's DefaultThreadFactory just like NioEventLoopGroup, EpollEventLoopGroup, etc.

Result:

Faster access to FastThreadLocal in oio.
2020-03-16 11:37:29 +01:00
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
Norman Maurer
15fa45a84b
Add log level check simply before logging. (#10080)
Motivation:

In general, we will close the debug log in a product environment. However, logging without external level check may still affect performance as varargs will need to allocate an array.

Modification:

Add log level check simply before logging.

Result:

Improve performance slightly in a product environment.
2020-03-05 14:38:57 +01:00
Antony T Curtis
7fce06a0d1
Preserve order when using alternate event loops (#10069)
Motivation:

When the HttpContentCompressor is put on an alternate EventExecutor, the order of events should be
preserved so that the compressed content is correctly created.

Modifications:
- checking that the executor in the ChannelHandlerContext is the same executor as the current executor when evaluating if the handler should be skipped.
- Add unit test

Result:

Fixes https://github.com/netty/netty/issues/10067

Co-authored-by: Norman Maurer <norman_maurer@apple.com>
2020-03-03 10:42:41 +01:00
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
b1c57257af
Correctly calculate the initial size of the LinkedHashMap during DefaultChannelGroup.write* (#10055)
Motivation:

We should not include the number of ServerChannel that are part of the DefaultChannelGroup when specify the initial size of the LinkedHashMap

Modifications:

Only use the number of the non ServerChannel

Result:

Reduce memory-footprint
2020-02-24 19:29:08 +01:00
feijermu
dcd62c2598
Remove the synchronized flag of fillInStackTrace method to improve performance while creating exception instance. (#10033)
Motivation:

The method body of fillInStackTrace method of IllegalStateException class in SimpleChannelPool.java is so simple (just return this) that there is no need to be marked as synchronized.

Modification:

Remove the synchronized flag of fillInStackTrace method.

Result:

It can improve performance slightly while creating a IllegalStateException instance.
2020-02-17 09:52:36 +01:00
feijermu
862efc618c
Remove the synchronized flag of fillInStackTrace method to improve performance while throwing exception. (#10031)
Motivation:

The method body of fillInStackTrace method of TimeoutException class in FixedChannelPool.java is so simple (just return this) that there is no need to be marked as synchronized.

Modification:

Remove the synchronized flag of fillInStackTrace method.

Result:
It can improve performance slightly while throwing a TimeoutException.
2020-02-15 18:30:44 +01:00
Subba Rao Pasupuleti
0e2e17f9a2
Adding pipeline rename handler tests (#10028)
Motivation:

Current pipeline handler replace tests are replacing handler with same name.
we need test that test handler can renamed, old handlers are removed from pipeline.

Modification:

There is coverage missing related to renaming of handlers

Result:

Adds missing tests

Co-authored-by: phani254 <phani254@yahoo.com>
2020-02-14 16:53:09 +01:00
Subba Rao Pasupuleti
ef50cf5696
remove unused shutdownLock (#10010)
Motivation:

This is unused variable

Modification:

removed variable

Result:

Removes unused lock

Co-authored-by: phani254 <phani254@yahoo.com>
2020-02-11 09:57:52 +01:00
Norman Maurer
a6896eae43
NioEventLoopTest.testChannelsRegistered test failure (#10014)
Motivation:

NioEventLoopTest.testChannelsRegistered sometimes fails due a race which is related to how SelectionKey and Selector is implemented in the JDK. In the current implementation it will "lazy" remove SelectionKeys from the Set which means we may still have these included sometimes when we use size() to get the number of SelectionKeys.

Modifications:

Just retry to read the number of registered Channels if we still see 2

Result:

Fixes https://github.com/netty/netty/issues/9895
2020-02-10 20:28:53 +01:00
Norman Maurer
56055f4404
Ensure ChannelOptions are applied in the same order as configured in *Bootstrap (#9998)
Motivation:

https://github.com/netty/netty/pull/9458 changed how we handled ChannelOptions internally to use a ConcurrentHashMap. This unfortunally had the side-effect that the ordering may be affected and not stable anymore. Here the problem is that sometimes we do validation based on two different ChannelOptions (for example we validate high and low watermarks against each other). Thus even if the user specified the options in the same order we may fail to configure them.

Modifications:

- Use again a LinkedHashMap to preserve order
- Add unit test

Result:

Apply ChannelOptions in correct and expected order
2020-02-06 09:02:31 +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
ba140ac6bc Fix SimpleChannelPoolTest#testCloseAsync() test flake (#9943)
Motivation

This test is failing intermittently and upon inspection has a race
condition.

Modification

Fix race condition by waiting for async release calls to complete prior
to closing the pool.

Result

Hopefully fixed flakey test
2020-01-11 06:03:45 +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
Scott Mitchell
e7091c04d7 Channel Pool LocalAddress initialization and cleanup (#9879)
Motivation:
The Channel Pool tests commonly use the same fixed local address String. This
has been observed to result in test failures if a single test fails and cleanup
is not done properly, or if tests are run in parallel. Also each test should
close any channel pool objects or maps to make sure resources are reclaimed.

Modifications:
- Use a random string for the address on each test to reduce the chance of
  collision.
- close all ChannelPool and ChannelPoolMap objects at the end of each test

Result:
Less likely to observe spurious failures due to LocalAddress collisions and more
complete test cleanup.
2019-12-13 13:45:22 +01:00
Robert Mihaly
af58bfcfb8 Synchronously close pools when closing AbstractChannelPoolMap (#9857)
Motivation:

In #9830 the get/remove/close methods implementation changed to avoid
deadlocks on event loops. The change involved modifying the methods to
close the managed ChannelPools asynchronously and return immediately.
While this behavior might be fine for get/remove, it is changing what
a user expects from a close() method and after returning from close()
there might be still resources open.

Modifications:

This change is a follow-up for #9830 to preserve the synchronous
behavior of the AbstractChannelPoolMap#close() method.

Result:

AbstractChannelPoolMap#close() returns once the managed pools have
been closed.
2019-12-11 09:28:44 +01:00
梦典
66fca3b58e Update ChannelOutboundBuffer.java (#9863)
Motivation:

fix comment of ChannelOutboundBuffer.CHANNEL_OUTBOUND_BUFFER_ENTRY_OVERHEAD

Modifications:

6 (NOT 8) reference fields is right

Result:
Correct comment
2019-12-11 09:26:21 +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
Norman Maurer
e69c4173ea
Replace synchronized with ConcurrentHashMap in Http2StreamChannelBootstrap (#9848)
Motivation:

97361fa2c8 replace synchronized with ConcurrentHashMap in *Bootstrap classes but missed to do the same for the Http2 variant.

Modifications:

- Use ConcurrentHashMap
- Simplify code in *Bootstrap classes

Result:

Less contention
2019-12-06 10:59:55 +01:00
Robert Mihaly
a322addb17 Asynchronously close pools in AbstractChannelPoolMap (#8238) (#9830)
Motivation:

In certain scenarios mutliple concurrent AbstractChannelPoolMap
operations might be called from event loops that handle also
ChannelPool close operations. If the map uses synchronous close
it could end up blocking the event loop and if multiple threads
are waiting for each other a deadlock might occur.

Modifications:

Previously #9226 introduced a closeAsync operation for
FixedChannelPool, which is now extended to SimpleChannelPool class.
The AbstractChannelPoolMap now uses the closeAsync operations when
closing redundant or removed SimpleChannelPool instances.

Result:

The AbstractChannelPoolMap get/remove operations will not wait
until the pools are closed as they will happen asynchronously and
avoid situations that could cause the event loop being blocked in
deadlocks.
2019-12-05 09:14:10 +01:00
Nick Hill
6d0c0e991b Small simplification to WriteTask optimization (#9807)
Motiviation

#9800 was just merged which consolidates the flush/no-flush WriteTasks
in AbstractChannelHandlerContext, but after looking at the changes again
I noticed a tiny simplification that would be good to make imo.

Modification

Remove use of conditional operator in decrementPendingOutboundBytes()

Result

Simpler code, one less branch
2019-11-27 06:55:22 +01:00
Nick Hill
e208e96f12 Clean up NioEventLoop (#9799)
Motivation

The event loop implementations had become somewhat tangled over time and
work was done recently to streamline EpollEventLoop. NioEventLoop would
benefit from the same treatment and it is more straighforward now that
we can follow the same structure as was done for epoll.

Modifications

Untangle NioEventLoop logic and mirror what's now done in EpollEventLoop
w.r.t. the volatile selector wake-up guard and scheduled task deadline
handling.

Some common refinements to EpollEventLoop have also been included - to
use constants for the "special" deadline/wakeup volatile values and to
avoid some unnecessary calls to System.nanoTime() on task-only
iterations.

Result

Hopefully cleaner, more efficient and less fragile NIO transport
implementation.
2019-11-26 08:25:59 +01:00
Nick Hill
b413464091 Optimize WriteTask recycling (#9800)
Motivation

AbstractChannelHandlerContext uses recyclable tasks when performing
writes from outside of the event loop. There's currently two distinct
classes WriteTask and WriteAndFlushTask used for executing writes versus
writeAndFlushes, and these are recycled in separate pools. However it is
straightforward to just have a single class / recycler pool, with a
flush flag.

Modifications

- Unify WriteTasks into a single class using the sign bit of the
existing size field to indicate whether a flush should be performed
- Use the new executor lazyExecute() method to lazily execute the
non-flush write tasks explicitly
- Change AbstractChannelHandlerContext#invokeWrite and
AbstractChannelHandlerContext#invokeWriteAndFlush from private to
package-private to avoid synthetic methods
- Correct the default object size estimate for WriteTask

Results

- Possibly improved reuse of recycled write tasks
- Fewer virtual method calls and shorter path lengths
- Less code
2019-11-23 20:45:35 +01:00
stroller
aa2a9931e8 Add one new constructor with threadFactory only (#9773)
Motivation:
In most cases, we want to use MultithreadEventLoopGroup such as NioEventLoopGroup without setting thread numbers but thread name only. So we need to use followed code:
NioEventLoopGroup boss = new NioEventLoopGroup(0, new DefaultThreadFactory("boss"));
It looks a bit confuse or strange for the number 0 due to we only want to set thread name. So it will be better to add new constructor for this case.

Modifications:
add new constructor into all event loop groups, for example: public NioEventLoopGroup(ThreadFactory threadFactory)

Result:
User can only set thread factory without setting the thread number to 0:
NioEventLoopGroup boss = new NioEventLoopGroup(new DefaultThreadFactory("boss"));
2019-11-18 09:42:44 +01:00
Matthew Miller
394e7f0287 Prevent memory leak when SimpleChannelPools are destroyed (#9760)
Motivation:

https://github.com/netty/netty/pull/9548 introduced a change that creates a new AttributeKey
for each SimpleChannelPool instance created. AttributeKeys are cached statically in a ConstantPool
by the AttributeKey.newInstance method. Because of this, creating a SimpleChannelPool instance will
allocate memory that will never be released, even after the SimpleChannelPool is closed.

Modifications:

This change goes back to a single AttributeKey per SimpleChannelPool, just using a more specific
name to reduce the chance of conflicts with user code.

Result:

No memory is leaked after a SimpleChannelPool instance is created and destroyed.
2019-11-07 14:48:56 +01:00
Nick Hill
a18c57ea87 Externalize lazy execution semantic for EventExecutors (#9587)
Motivation

This is already done internally for various reasons but it would make
sense i.m.o. as a top level concept: submitting a task to be run on the
event loop which doesn't need to run immediately but must still be
executed in FIFO order relative all other submitted tasks (be those
"lazy" or otherwise).

It's nice to separate this abstract "relaxed" semantic from concrete
implementations - the simplest is to just delegate to existing execute,
but for the main EL impls translates to whether a wakeup is required
after enqueuing.

Having a "global" abstraction also allows for simplification of our
internal use - for example encapsulating more of the common scheduled
future logic within AbstractScheduledEventExecutor.

Modifications

- Introduce public LazyRunnable interface and
AbstractEventExecutor#lazyExecute method (would be nice for this to be
added to EventExecutor interface in netty 5)
- Tweak existing SingleThreadEventExecutor mechanics to support these
- Replace internal use of NonWakeupRunnable (such as for pre-flush
channel writes)
- Uplift scheduling-related hooks into AbstractScheduledEventExecutor,
eliminating intermediate executeScheduledRunnable method

Result

Simpler code, cleaner and more useful/flexible abstractions - cleaner in
that they fully communicate the intent in a more general way, without
implying/exposing/restricting implementation details
2019-10-31 10:01:53 +01:00
SimpleYoung
82376fd889 Remove an unnecessary expression in NioEventLoop (#9729)
Motivation:

Remove an unnecessary expression to make the code more readable

Modification:

Remove `eventLoop == null`

Result:

Fixes #9725
2019-10-30 12:24:03 +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
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
Norman Maurer
6c05d16967
Use @SuppressJava6Requirement for animal sniffer plugin to ensure we always guard correctly (#9655)
Motivation:

We can use the `@SuppressJava6Requirement` annotation to be more precise about when we use Java6+ APIs. This helps us to ensure we always protect these places.

Modifications:

Make use of `@SuppressJava6Requirement` explicit

Result:

Fixes https://github.com/netty/netty/issues/2509.
2019-10-14 15:54:49 +02:00