Commit Graph

1123 Commits

Author SHA1 Message Date
Norman Maurer
14a820d5fa
Always notify FutureListener via the EventExecutor (#9489)
Motiviation:

A lot of reentrancy bugs and cycles can happen because the DefaultPromise will notify the FutureListener directly when completely in the calling Thread if the Thread is the EventExecutor Thread. To reduce the risk of this we should always notify the listeners via the EventExecutor which basically means that we will put a task into the taskqueue of the EventExecutor and pick it up for execution after the setSuccess / setFailure methods complete the promise.

Modifications:

- Always notify via the EventExecutor
- Adjust test to ensure we correctly account for this
- Adjust tests that use the EmbeddedChannel to ensure we execute the scheduled work.

Result:

Reentrancy bugs related to the FutureListeners cant happen anymore.
2019-09-24 09:10:59 +02:00
wyzhang
bfe18bcb3c Fix a bug introduced by 79706357c7 which can cause thread to spin in an infinite loop. (#9579)
Motivation:
peek() is implemented in a similar way to poll() for the mpsc queue, thus it is more like a consumer call.
It is possible that we could have multiple thread call peek() and possibly one thread calls poll() at at the same time.
This lead to multiple consumer scenario, which violates the multiple producer single consumer condition and could lead to spin in an infinite loop in peek()

Modification:
Use isEmpty() instead of peek() to check if task queue is empty

Result:
Dont violate the mpsc semantics.
2019-09-19 12:03:27 +02:00
Norman Maurer
fafde4aeec No need to explicit use the AccessController when SystemPropertyUtil is used (#9577)
Motivation:

SystemPropertyUtil already uses the AccessController internally so not need to wrap its usage with AccessController as well.

Modifications:

Remove explicit AccessController usage when SystemPropertyUtil is used.

Result:

Code cleanup
2019-09-19 08:50:36 +02:00
Andrey Mizurov
f26840478a Fix HttpContentEncoder does not handle multiple Accept-Encoding (#9557)
Motivation:
At the current moment HttpContentEncoder handle only first value of multiple accept-encoding headers.

Modification:

Join multiple accept-encoding headers to one separated by comma.

Result:

Fixes #9553
2019-09-11 08:50:43 +02:00
Nick Hill
6423e80932 Avoid redundant volatile read in DefaultPromise#get() (#9547)
Motivation

Currently every call to get() on a promise results in two reads of the
volatile result field when one would suffice. Maybe this is optimized
away but it seems sensible not to rely on that.

Modification

Reimplement get() and get(...) in DefaultPromise to reduce volatile access.

Result

Fewer volatile reads.
2019-09-09 10:03:30 +02:00
Nick Hill
0280bd2063 Avoid CancellationException construction in DefaultPromise (#9534)
Motivation

problem with Throwable#addSuppressed() raised in #9151. This introduced
a performance issue when promises are cancelled at a high frequency due
to the construction cost of CancellationException at the time that
DefaultPromise#cancel() is called.

Modifications

- Reinstate the prior static CANCELLATION_CAUSE_HOLDER but use it just
as a sentinel to indicate cancellation, constructing a new
CancellationException only if/when one needs to be explicitly
returned/thrown
- Subclass CancellationException, overriding fillInStackTrace() to
minimize the construction cost in these cases

Result

Promises are much cheaper to cancel. Fixes #9522.
2019-09-05 11:10:55 +02:00
Norman Maurer
3099bbcc13
Change semantics of EmbeddedChannel to match other transports more closely. (#9529)
Motiviation:

EmbeddedChannel currently is quite differently in terms of semantics to other Channel implementations. We should better change it to be more closely aligned and so have the testing code be more robust.

Modifications:

- Change EmbeddedEventLoop.inEventLoop() to only return true if we currenlty run pending / scheduled tasks
- Change EmbeddedEventLoop.execute(...) to automatically process pending tasks if not already doing so
- Adjust a few tests for the new semantics (which is closer to other Channel implementations)

Result:

EmbeddedChannel works more like other Channel implementations
2019-09-04 12:00:06 +02:00
Xiaoqin Fu
88aa12cc1a Remove extra checks to fix #9456 (#9523)
Motivation:

There are some extra log level checks (logger.isWarnEnabled()).

Modification:

Remove log level checks (logger.isWarnEnabled()) from io.netty.channel.epoll.AbstractEpollStreamChannel, io.netty.channel.DefaultFileRegion, io.netty.channel.nio.AbstractNioChannel, io.netty.util.HashedWheelTimer, io.netty.handler.stream.ChunkedWriteHandler and io.netty.channel.udt.nio.NioUdtMessageConnectorChannel

Result:

Fixes #9456
2019-08-30 10:40:04 +02:00
Codrut Stancu
de126fdf65 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 09:21:33 +02:00
szh
c227053c3b Fix log format in HashedWheelTimer (#9507)
Motivation:

log message did not correctly use `{}`

Modification:

replace `%d` by `{}`

Result:

The log is correct.
2019-08-26 08:55:15 +02:00
Antony T Curtis
188c927576 AsciiString contentEqualsIgnoreCase fails when arrayOffset is non-zero (#9477)
Motivation:

AsciiString.contentEqualsIgnoreCase may return true for non-matching strings of equal length when offset is non zero.

Modifications:

- Correctly take offset into account
- Add unit test

Result: 

Fixes #9475
2019-08-17 09:57:40 +02:00
Nico Kruber
d285623925 Try to load native linux libraries with matching classifier first (#9411)
Motivation:

Users' runtime systems may have incompatible dynamic libraries to the ones our
tcnative wrappers link to. Unfortunately, we cannot determine and catch these
scenarios (in which the JVM crashes) but we can make a more educated guess on
what library to load and try to find one that works better before crashing.

Modifications:

1) Build dynamically linked openSSL builds for more OSs (netty-tcnative)
2) Load native linux libraries with matching classifier (first)

Result:

More developers / users can use the dynamically-linked native libraries.
2019-08-12 08:48:58 +02:00
Per Lundberg
eef72b022a Future.java: Fix typos in Javadoc (#9391)
Motivation:

Docs should have no typos

Modifications:

Fix a few typos

Result:

More correct docs.
2019-07-24 07:38:08 +02:00
YuanHu
90b788bef7 Recycler availableSharedCapacity will be slowly exhausted due missing reclaimSpace(...) call (#9394)
Motivation:

We did miss to call reclaimSpace(...) in one case which can lead to the situation of having the Recycler to not correctly reclaim space and so just create new objects when not needed.

Modifications:

Correctly call reclaimSpace(...)

Result:

Recycler correctly reclaims space in all situations.
2019-07-21 21:07:12 +02:00
Dmitriy Dumanskiy
390fa95f32 prefer instanceOf instead of getClass() (#9366)
Motivation:

`instanceOf` doesn't perform null check like `getClass()` does. So `instanceOf` may be faster. However, it not true for all cases, as C2 could eliminate these null checks for `getClass()`.

Modification:

Replaced `string.getClass() == AsciiString.class` with `string instanceof AsciiString`.

Proof:

```
@BenchmarkMode(Mode.Throughput)
@Fork(value = 1)
@State(Scope.Thread)
@Warmup(iterations = 5, time = 1, batchSize = 1000)
@Measurement(iterations = 10, time = 1, batchSize = 1000)
public class GetClassInstanceOf {

    Object key;

    @Setup
    public void setup() {
        key = "123";
    }

    @Benchmark
    public boolean getClassEquals() {
        return key.getClass() == String.class;
    }

    @Benchmark
    public boolean instanceOf() {
        return key instanceof String;
    }

}
```

```
Benchmark                           Mode  Cnt       Score      Error  Units
GetClassInstanceOf.getClassEquals  thrpt   10  401863.130 ± 3092.568  ops/s
GetClassInstanceOf.instanceOf      thrpt   10  421386.176 ± 4317.328  ops/s
```
2019-07-16 21:25:59 +02:00
jingene
af614e4d6e Change the netty.io homepage scheme(http -> https) (#9344)
Motivation:

Netty homepage(netty.io) serves both "http" and "https".
It's recommended to use https than http.
Modification:

I changed from "http://netty.io" to "https://netty.io"
Result:

No effects.
2019-07-09 21:10:14 +02:00
jimin
d54678d645 Remove unnecessary code (#9303)
Motivation:

There are is some unnecessary code (like toString() calls) which can be cleaned up.

Modifications:

- Remove not needed toString() calls
- Simplify subString(...) calls
- Remove some explicit casts when not needed.

Result:

Cleaner code
2019-07-04 09:02:24 +02:00
jimin
500bb5db8e optimize some code (#9289)
Motivation:

There is some manual coping of elements of Collections which can be replaced by Collections.addAll(...) and also some unnecessary semicolons.

Modifications:

- Simplify branches
- Use Collections.addAll
- Code cleanup

Result:

Code cleanup
2019-06-28 13:49:24 +02:00
jimin
411b6a56b5 remove unused imports (#9287)
Motivation:

Some imports are not used

Modification:

remove unused imports

Result:

Code cleanup
2019-06-26 21:16:16 +02:00
jimin
3e836bd3fe Call to ‘asList’ with only one argument could be replaced with ‘singletonList’ (#9288)
Motivation:

asList should only be used if there are multiple elements.

Modification:

Call to asList with only one argument could be replaced with singletonList

Result:

Cleaner code and a bit of memory savings
2019-06-26 21:07:11 +02:00
Nick Hill
ed23cfae5e Simplify SingleThreadEventExecutor.awaitTermination() implementation (#9081)
Motivation

A Semaphore is currently dedicated to this purpose but a simple
CountDownLatch will do.

Modification

Remove private threadLock Semaphore from SingleThreadEventExecutor and just use a CountDownLatch.

Also eliminate use of PlatformDependent.throwException() in startThread
method, and combine some nested if clauses.

Result

Cleaner EventLoop termination notification.
2019-05-27 16:09:41 +02:00
Norman Maurer
ed61e5f543 Only use static Exception instances when we can ensure addSuppressed … (#9152)
Motivation:

OOME is occurred by increasing suppressedExceptions because other libraries call Throwable#addSuppressed. As we have no control over what other libraries do we need to ensure this can not lead to OOME.

Modifications:

Only use static instances of the Exceptions if we can either dissable addSuppressed or we run on java6.

Result:

Not possible to OOME because of addSuppressed. Fixes https://github.com/netty/netty/issues/9151.
2019-05-17 22:42:53 +02:00
Nick Hill
dd9e0d5a19 AsciiString.lastIndexOf(...) is implemented incorrectly (#9103)
Motivation

@xiaoheng1 reported incorrect behaviour of AsciiString.lastIndexOf in
#9099. Upon closer inspection it appears that it was never implemented
correctly and searches between the provided index and the end of the
string similar to indexOf(...), rather than between the provided index
and the beginning of the string as the javadoc states (and in line with
java.lang.String).

Modifications

Fix AsciiString.lastIndexOf implementation and corresponding unit tests
to behave the same as the equivalent String methods.

Result

Fixes #9099
2019-05-13 07:03:51 +02:00
Anuraag Agrawal
b45a1cd15b Add equality check to contentEquals instance methods. (#9130)
Motivation:

An instance is always equal to itself. It makes sense to skip processing for this case, which isn't uncommon since `AsciiString` is often memoized within an application when used as HTTP header names.

Modification:

`contentEquals` methods first check for instance equality before doing processing.

Result:

`contentEquals` will be faster when comparing an instance with itself.

I couldn't find any unit tests for these methods, only the static version. Let me know if I should add something to `AsciiStringCharacterTest`.

Came up here:
https://github.com/line/armeria/pull/1731#discussion_r280396280
2019-05-08 07:31:09 +02:00
Paulo Lopes
f5c0d2eb56 Add SVM metadata and minimal substitutions to build graalvm native image applications. (#8963)
Motivation:

GraalVM native images are a new way to deliver java applications. Netty is one of the most popular libraries however there are a few limitations that make it impossible to use with native images out of the box. Adding a few metadata (in specific modules will allow the compilation to success and produce working binaries)

Modification:

Added properties files in `META-INF` and substitutions classes (under `internal.svm`) will solve the compilation issues. The substitutions classes are not visible and do not have a public constructor so they are not visible to end users.

Result:

Fixes #8959

This fix is very conservative as it applies the minimum config required to build:

* pure netty servers
* vert.x applications
* grpc applications

The build is having trouble due to checkstyle which does not seem to be able to find the copyright notice on property files.
2019-04-29 09:12:09 +02:00
Norman Maurer
aa0451d26d Fix flaky GlobalEventExecutorTest.* (#9074)
Motivation:

In GlobalEventExecutorTest we used Thread.sleep(...) which can produce flaky results (as seen on the CI). We should use another alternative during tests.

Modifications:

Replace Thread.sleep(...) with join()

Result:

No more flaky GlobalEventExecutor tests.
2019-04-29 08:33:18 +02:00
Norman Maurer
3875bb92b4 Don't use sun.misc.Unsafe when IKVM.NET is used (#9042)
Motivation:

IKVM.NET seems to ship a bug sun.misc.Unsafe class, for this reason we should better disable our sun.misc.Unsafe usage when we detect IKVM.NET is used.

Modifications:

Check if IKVM.NET is used and if so do not use sun.misc.Unsafe by default.

Result:

Fixes https://github.com/netty/netty/issues/9035 and https://github.com/netty/netty/issues/8916.
2019-04-12 22:42:13 +02:00
Norman Maurer
81244e1ae1
Introduce Future.toStage() which allows to obtain a CompletionStage a… (#9004)
Motivation:

CompletionStage is the new standard for async operation chaining in JDK8+ that is supported by various of libs. To make it easer to interopt with other libs and to allow users to make good use of lambdas and functional programming style we should allow to convert from our Future to a CompletionStage while still provide the same ordering guarantees.

The reason why we expose this as toStage() and not jus have Future extend CompletionStage is for two reasons:
 - Keep our interface norrow
 - Keep semantics clear (Future.addListener(...) methods return this while all chaining methods of CompletionStage return a new instance).

Modifications:

- Merge implements in AbstractFuture to Future (by make these default methods)
- Add Future.toStage() as a default method and a special implemention in DefaultPromise (to reduce GC).
- Add Future.executor() which returns the EventExecutor that is pinned to the Future
- Introduce FutureCompletionStage that extends CompletionStage to clarify threading semantics and guarantees.

Result:

Easier inter-op with other Java8+ libaries. Related to https://github.com/netty/netty/issues/8523.
2019-04-11 14:52:33 +02:00
Norman Maurer
7c35781f4d
DefaultPromise may throw checked exceptions that are not advertised (#8995)
Motivation:

We should not throw check exceptions when the user calls sync*() but should better wrap it in a CompletionException to make it easier for people to reason about what happens.

Modifications:

- Change sync*() to throw CompletionException
- Adjust tests
- Add some more tests

Result:

Fixes https://github.com/netty/netty/issues/8521.
2019-04-10 07:15:31 +02:00
Nick Hill
e75b7edaa3 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 16:23:15 +02:00
Norman Maurer
bace8a1cce
Remove code that accounts for changing EventExecutors in DefaultPromise (#8996)
Motivation:

DefaultPromise requires an EventExecutor which provides the thread to notify listeners on and this EventExecutor can never change. We can remove the code that supported the possibility of a changing the executor as this is not possible anymore.

Modifications:

- Remove constructor which allowed to construct a *Promise without an EventExecutor
- Remove extra state
- Adjusted SslHandler and ProxyHandler for new code

Result:

Fixes https://github.com/netty/netty/issues/8517.
2019-04-03 10:36:55 +02:00
Norman Maurer
9681842d54 Allow to automatically trim the PoolThreadCache in a timely interval (#8941)
Motivation:

PooledByteBufAllocator uses a PoolThreadCache per Thread that allocates / deallocates to minimize the performance overhead. This PoolThreadCache is trimmed after X allocations to free up buffers that are not allocated for a long time. This works out quite well when the app continues to allocate but fails if the app stops to allocate frequently (for whatever reason) and so a lot of memory is wasted and not given back to the arena / freed.

Modifications:

- Add a ThreadExecutorMap that offers multiple methods that wrap Runnable / ThreadFactory / Executor and allow to call ThreadExecutorMap.currentEventExecutor() to get the current executing EventExecutor for the calling Thread.
- Use these methods in the constructors of our EventExecutor implementations (which also covers the EventLoop implementations)
- Add io.netty.allocator.cacheTrimIntervalMillis system property which can be used to specify a fixed rate / interval on which we should try to trim the PoolThreadCache for a EventExecutor that allocates.
- Add PooledByteBufAllocator.trimCurrentThreadCache() to allow the user to trim the cache of the calling thread manually.
- Add testcases
- Introduce FastThreadLocal.getIfExists()

Result:

Allow to better / more frequently trim PoolThreadCache and so give back memory to the area / system.
2019-03-22 11:17:40 +01:00
Norman Maurer
8b23c85978 Remove old internal code that is not used anymore after removing usage of ObjectCleaner (#8956)
Motivation:

We dont use ObjectCleaner in our FastThreadLocal anymore so we also dont need to take special care to store it there anymore.

Modifications:

Remove code that is not needed anymore.

Result:

Code cleanup.
2019-03-20 08:34:02 +01:00
Norman Maurer
98f9924bc5 Let GlobalEventExecutor implement OrderedEventExecutor (#8952)
Motivation:

GlobalEventExecutor does already provide all guarantees of OrderedEventExecutor so it should implement it.

Modifications:

Let GlobalEventExecutor implement OrderedEventExecutor.

Result:

Make it more clear how execution order is handled in GlobalEventExecutor.
2019-03-19 11:40:11 +01:00
Enrico Olivelli
ac23f2485e Expose the global direct memory counter. (#8945)
Motivation:
This counter is very useful in order to monitor Netty without having every ByteBufAllocator in the JVM

Modification:
Expose the value of DIRECT_MEMORY_COUNTER as we are already doing for DIRECT_MEMORY_LIMIT.
We are returning -1 in case that DIRECT_MEMORY_COUNTER is not available.

Result:

Be able to get the amount of direct memory used.
2019-03-19 08:35:18 +01:00
Norman Maurer
f1bc4569c1 Fix typo in NativeLibraryLoader debug log message (#8947)
Motivation:

We had a typo in NativeLibraryLoader debug log message which could misslead the user.

Modifications:

Fix typo to correctly state java.library.path

Result:

Correct and less confusing log message
2019-03-16 14:28:14 +01:00
Nick Hill
a258cd6f42 Optimize Hpack and AsciiString hashcode and equals (#8902)
Motivation:

While looking at hpack header-processing hotspots I noticed some low
level too-big-to-inline methods which can be shrunk.

Modifications:

Reduce bytecode size and/or runtime operations used for the following
methods:

PlatformDependent0.equals(byte[], ...)
PlatformDependent0.equalsConstantTime(byte[], ...)
PlatformDependent0.hashCodeAscii(byte[],int,int)
PlatformDependent.hashCodeAscii(CharSequence)

Result:

Existing benchmarks show decent improvement

Before

Benchmark                     (size)   Mode  Cnt         Score         Error  Units
HpackUtilBenchmark.newEquals   SMALL  thrpt    5  17200229.374 ± 1701239.198  ops/s
HpackUtilBenchmark.newEquals  MEDIUM  thrpt    5   3386061.629 ±   72264.685  ops/s
HpackUtilBenchmark.newEquals   LARGE  thrpt    5    507579.209 ±   65883.951  ops/s

After

Benchmark                     (size)   Mode  Cnt         Score         Error  Units
HpackUtilBenchmark.newEquals   SMALL  thrpt    5  29221527.058 ± 4805825.836  ops/s
HpackUtilBenchmark.newEquals  MEDIUM  thrpt    5   6556251.645 ±  466115.199  ops/s
HpackUtilBenchmark.newEquals   LARGE  thrpt    5    879828.889 ±  148136.641  ops/s

Before

Benchmark                          (size)  Mode  Cnt     Score     Error  Units
PlatformDepBench.unsafeBytesEqual       4  avgt   10     4.263 ±   0.110  ns/op
PlatformDepBench.unsafeBytesEqual      10  avgt   10     5.206 ±   0.133  ns/op
PlatformDepBench.unsafeBytesEqual      50  avgt   10     8.160 ±   0.320  ns/op
PlatformDepBench.unsafeBytesEqual     100  avgt   10    13.810 ±   0.751  ns/op
PlatformDepBench.unsafeBytesEqual    1000  avgt   10    89.077 ±   7.275  ns/op
PlatformDepBench.unsafeBytesEqual   10000  avgt   10   773.940 ±  24.579  ns/op
PlatformDepBench.unsafeBytesEqual  100000  avgt   10  7546.807 ± 110.395  ns/op

After

Benchmark                          (size)  Mode  Cnt     Score     Error  Units
PlatformDepBench.unsafeBytesEqual       4  avgt   10     3.337 ±   0.087  ns/op
PlatformDepBench.unsafeBytesEqual      10  avgt   10     4.286 ±   0.194  ns/op
PlatformDepBench.unsafeBytesEqual      50  avgt   10     7.817 ±   0.123  ns/op
PlatformDepBench.unsafeBytesEqual     100  avgt   10    11.260 ±   0.412  ns/op
PlatformDepBench.unsafeBytesEqual    1000  avgt   10    84.255 ±   2.596  ns/op
PlatformDepBench.unsafeBytesEqual   10000  avgt   10   591.892 ±   5.136  ns/op
PlatformDepBench.unsafeBytesEqual  100000  avgt   10  6978.859 ± 285.043  ns/op
2019-03-08 06:55:32 +01:00
Norman Maurer
751cbf0f26 Fix compile error introduced by cherry-pick 6c4d6ae332 2019-03-05 09:26:44 +01:00
Norman Maurer
6c4d6ae332 Correctly monkey-patch id also in whe os / arch is used within library name. (#8913)
Motivation:

2bb9f64e16 introduced a change which made it possible to use different shaded versions of netty-tcnative on the classpath. This only partly worked as we did not correctly handled the case when os / arch is part of the library name (which is the case when netty-tcnative-boringssl-static is used with the uber jar).

Modifications:

- If patching the ID failed we retry again with the os / arch stripped
- Add unit tests to verify that patching ID now works with and without os / arch as suffix.

Result:

Using multiple shaded version of netty-tcnative-boringssl-static on MacOS works.
2019-03-05 09:11:50 +01:00
Norman Maurer
795f9600ba Adjust tests to be able to build / test when using IBM J9 / OpenJ9 (#8900)
Motivation:

We should run a CI job using J9 to ensure netty also works when using different JVMs.

Modifications:

- Adjust PooledByteBufAllocatorTest to be able to complete faster when using a JVM which takes longer when joining Threads (this seems to be the case with J9).

Result:

Be able to run CI against J9.
2019-03-01 06:48:35 +01:00
Norman Maurer
f58d074caf Tighten up contract of PromiseCombiner and so make it more safe to use (#8886)
Motivation:

PromiseCombiner is not thread-safe and even assumes all added Futures are using the same EventExecutor. This is kind of fragile as we do not enforce this. We need to enforce this contract to ensure it's safe to use and easy to spot concurrency problems.

Modifications:

- Add new contructor to PromiseCombiner that takes an EventExecutor and deprecate the old non-arg constructor.
- Check if methods are called from within the EventExecutor thread and if not fail
- Correctly dispatch on the right EventExecutor if the Future uses a different EventExecutor to eliminate concurrency issues.

Result:

More safe use of PromiseCombiner + enforce correct usage / contract.
2019-02-28 20:39:37 +01:00
Norman Maurer
94c33936db Add test for Iterator.remove() on KObjectHashMap.values().iterator() (#8891)
Motivation:

https://github.com/netty/netty/pull/8866 added support for calling Iterator.remove() but did not add a testcase.

Modifications:

Add testcase to ensure removal works.

Result:

Better test-coverage.
2019-02-27 12:06:46 +01:00
Michael André Pearce
a40655ad0c Support removal using values iterator. (#8866)
Motivation:

As ActiveMQ project using netty, we want to make use of this class, unfortunately the iterator on values(), seems to not support remove method, even so the delegated iterator does. Currently we have to clone and modify this class locally albeit a one line change is needed, it would be ideal if netty could allow remove, then removing the need to maintain a clone.  

Modifications:

* remove throws UnsupportedOperationException, and instead call remove method on delegated iterator

Result:

Be able to call Iterator.remove() for the values.
2019-02-26 21:29:07 +01:00
Eric Anderson
23190bd787 Log the shaded form of native workdir system property (#8867)
Motivation:

When users' /tmp is noexec, NativeLibraryLoader logs a message informing
them how to fix the problem by setting a system property. However, if
Netty has been shaded that message will tell them to set the un-shaded
system property name, which won't work.

Modifications:

Change the code to let shading tools rename the native.workdir property
name reference within user-visible log messages.

Notably, debug logs were _not_ changed, as there's many debug statements
including a variety of property names. Fixing them would be a much more
invasive change and have limited benefit.

Result:

The users will see the correctly-named system property to set if they
are using a noexec /tmp.
2019-02-14 15:19:08 -08:00
Norman Maurer
f6f7564602 Don't update state of PromiseCombiner when finish(null) is called (#8843)
Motivation:

When we fail a call to PromiseCombiner.finish(...) because of a null argument we must not update the internal state before throwing.

Modifications:

- First do the null check and only after we validated that the argument is not null update the internal state
- Add test case.

Modifications:

Do not mess up internal state of PromiseCombiner when finish(...) is called with a null argument.

Result:

After your change, what will change.
2019-02-04 19:15:57 +01:00
Dmitriy Dumanskiy
116f72db8d Legacy properties removed (#8839)
Motivation:

We can remove some properties for which we introduced replacements.

Modifications:

io.netty.buffer.bytebuf.checkAccessible, io.netty.leakDetectionLevel, org.jboss.netty.tryUnsafe properties removed

Result:

Code cleanup
2019-02-04 13:56:15 +01:00
田欧
e8efcd82a8 migrate java8: use requireNonNull (#8840)
Motivation:

We can just use Objects.requireNonNull(...) as a replacement for ObjectUtil.checkNotNull(....)

Modifications:

- Use Objects.requireNonNull(...)

Result:

Less code to maintain.
2019-02-04 10:32:25 +01:00
Dmitriy Dumanskiy
2e433889b2 Improve DateFormatter parsing performance (#8821)
Motivation:

Just was looking through code and found 1 interesting place DateFormatter.tryParseMonth that was not very effective, so I decided to optimize it a bit.

Modification:

Changed DateFormatter.tryParseMonth method. Instead of invocation regionMatch() for every month - compare chars one by one.

Result:

DateFormatter.parseHttpDate method performance improved from ~3% to ~15%.

Benchmark                                                                (DATE_STRING)   Mode  Cnt        Score       Error  Units
DateFormatter2Benchmark.parseHttpHeaderDateFormatter     Sun, 27 Jan 2016 19:18:46 GMT  thrpt    6  4142781.221 ± 82155.002  ops/s
DateFormatter2Benchmark.parseHttpHeaderDateFormatter     Sun, 27 Dec 2016 19:18:46 GMT  thrpt    6  3781810.558 ± 38679.061  ops/s
DateFormatter2Benchmark.parseHttpHeaderDateFormatterNew  Sun, 27 Jan 2016 19:18:46 GMT  thrpt    6  4372569.705 ± 30257.537  ops/s
DateFormatter2Benchmark.parseHttpHeaderDateFormatterNew  Sun, 27 Dec 2016 19:18:46 GMT  thrpt    6  4339785.100 ± 57542.660  ops/s
2019-02-04 10:04:35 +01:00
Nick Hill
3ac9363ef9 Fix varargs parameter logging in LocationAwareSlf4JLogger (#8834)
Motivation

As pointed out by @91he in
https://github.com/netty/netty/pull/8595#issuecomment-459181794, there
is a remaining bug in LocationAwareSlf4JLogger following the updates
done in #8595. The logging methods which take a varargs message
parameter array should format using MessageFormatter.arrayFormat rather
than MessageFormatter.format.

Modifications

Change varargs param methods in LocationAwareSlf4JLogger to use
MessageFormatter.arrayFormat and extend unit test to cover these cases.

Results

Correct log output when logging messages with > 2 parameters when using
LocationAwareSlf4JLogger.
2019-02-02 07:08:58 +01:00
Norman Maurer
abefbd7071 Do not schedule notify task if there are no listeners attached to the promise. (#8797)
Motivation:

If there are no listeners attached to the promise when full-filling it we do not need to schedule a task to notify.

Modifications:

- Don't schedule a task if there is nothing to notify.
- Add unit tests.

Result:

Fixes https://github.com/netty/netty/issues/8795.
2019-01-31 08:57:11 +01:00