Commit Graph

873 Commits

Author SHA1 Message Date
jiachun.fjc
cd80b6c2d8 Use simple volatile read for SingleThreadEventExecutor#state instead of UNSAFE(AtomicIntegerFieldUpdater#get), CAS operation still to use AtomicIntegerFieldUpdater
Motivation:

AtomicIntegerFieldUpdater#get is unnecessary, I think use simple volatile read is cleaner

Modifications:

Replace code STATE_UPDATER.get(this) to state in SingleThreadEventExecutor

Result:

Cleaner code
2017-05-08 19:36:19 +02:00
jiachun.fjc
963cd22a05 InternalThreadLocalMap#stringBuilder: ensure memory overhead
Motivation:

InternalThreadLocalMap#stringBuilder: ensure memory overhead

Modification:

If the capacity of StringBuilder is greater than 65536 then release it on the next time you get StringBuilder and re-create a StringBuilder.

Result:

Possible less memory usage.
2017-05-05 09:28:51 -07:00
Jason Tedor
02a2738cd2 Do not try to use cleaner if no unsafe
Motivation:

If unsafe is unavailable, we can not use the cleaner anyway. If we try
to set it up, we get an annoying log message about unsafe being
unavailable (when debug logging is enabled). We know this will fail, so
we should not even bother and avoid the log message.

Modifications:

This commit adds a guard against setting up the cleaner if it is not
going to be available because unsafe is unavailable.

Result:

We do not try to set up the cleaner if unsafe is unavailable, and we do
not get an annoying log message.
2017-05-03 13:36:00 -07:00
Jason Tedor
9a0fd3a7b8 Do not log on explicit no unsafe again
Motivation:

Users should not see a scary log message when Netty is initialized if
Netty configuration explicitly disables unsafe. The log message that
produces this warning was previously guarded but the guard was
lost.

Modifications:

This commit brings back the guard against the scary log message if
unsafe is explicitly disabled.

Result:

No log message is produced when unsafe is unavailable because Netty was
told to not look for it.
2017-05-03 13:29:58 -07:00
Scott Mitchell
3cc4052963 New native transport for kqueue
Motivation:
We currently don't have a native transport which supports kqueue https://www.freebsd.org/cgi/man.cgi?query=kqueue&sektion=2. This can be useful for BSD systems such as MacOS to take advantage of native features, and provide feature parity with the Linux native transport.

Modifications:
- Make a new transport-native-unix-common module with all the java classes and JNI code for generic unix items. This module will build a static library for each unix platform, and included in the dynamic libraries used for JNI (e.g. transport-native-epoll, and eventually kqueue).
- Make a new transport-native-unix-common-tests module where the tests for the transport-native-unix-common module will live. This is so each unix platform can inherit from these test and ensure they pass.
- Add a new transport-native-kqueue module which uses JNI to directly interact with kqueue

Result:
JNI support for kqueue.
Fixes https://github.com/netty/netty/issues/2448
Fixes https://github.com/netty/netty/issues/4231
2017-05-03 09:53:22 -07:00
jiachun.fjc
e58095c4f2 Simplify code
Motivation:

Code can be simplified

Modification:

Refactor code to remove extra branching

Result:

Cleaner code.
2017-05-02 15:16:19 -07:00
Vladimir Kostyukov
ed37cf20ef Introduce HashedWheelTimer.pendingTimeouts()
Motivation:

Fixes #6681.

Modification:

For the sake of better timer observability, expose the number of pending timeouts through the new HashedWheelTimer.pendingTimeouts method .

Result:

It's now ridiculously easy to observe Netty timer's very basic and yet important metric, the number of pending tasks/timeouts.
2017-05-01 20:10:22 -07:00
Norman Maurer
6915ec3bb9 [maven-release-plugin] prepare for next development iteration 2017-04-29 14:10:00 +02:00
Norman Maurer
f30f242fee [maven-release-plugin] prepare release netty-4.1.10.Final 2017-04-29 14:09:32 +02:00
Scott Mitchell
ea1cb20c90 Netutil IPv6 bugs
Motivation:
NetUtil#isValidIpV6Address and NetUtil#getIPv6ByName allowed an invalid form of mapped IPv4 addresses which lead to accepting invalid IPv6 addresses as valid.

Modifications:
- NetUtil#isValidIpV6Address and NetUtil#getIPv6ByName should only allow 7 colons for an IPv4 address if they are the first 2 characters.

Result:
More correct implementation of NetUtil#isValidIpV6Address and NetUtil#getIPv6ByName
2017-04-28 07:29:36 +02:00
Scott Mitchell
9cb858fcf6 NetUtil IPv6 bugs related to IPv4 and compression
Motivation:
NetUtil#getByName and NetUtil#isValidIpV6Address do not strictly enforce the format of IPv4 addresses that are allowed to be embedded in IPv6 addresses as specified in https://tools.ietf.org/html/rfc4291#section-2.5.5. This may lead to invalid addresses being parsed, or invalid addresses being considered valid. Compression of a single IPv6 word was also not handled correctly if there are 7 : characters.

Modifications:
- NetUtil#isValidIpV6Address should enforce the IPv4-Compatible and IPv4-Mapped are the only valid formats for including IPv4 addresses as specified in https://tools.ietf.org/html/rfc4291#section-2.5.5
- NetUtil#getByName should more stritcly parse IPv6 addresses which contain IPv4 addresses as specified in https://tools.ietf.org/html/rfc4291#section-2.5.5
- NetUtil should allow compression even if the number of : characters is 7.
- NetUtil#createByteArrayFromIpAddressString should use the same IP string to byte[] translation which is used in NetUtil#getByName

Result:
NetUtil#getByName and NetUtil#isValidIpV6Address respect the IPv6 RFC which defines the valid formats for embedding IPv4 addresses.
2017-04-25 15:10:38 -07:00
Jason Tedor
98beb777f8 Enable configuring available processors
Motivation:

In cases when an application is running in a container or is otherwise
constrained to the number of processors that it is using, the JVM
invocation Runtime#availableProcessors will not return the constrained
value but rather the number of processors available to the virtual
machine. Netty uses this number in sizing various resources.
Additionally, some applications will constrain the number of threads
that they are using independenly of the number of processors available
on the system. Thus, applications should have a way to globally
configure the number of processors.

Modifications:

Rather than invoking Runtime#availableProcessors, Netty should rely on a
method that enables configuration when the JVM is started or by the
application. This commit exposes a new class NettyRuntime for enabling
such configuraiton. This value can only be set once. Its default value
is Runtime#availableProcessors so that there is no visible change to
existing applications, but enables configuring either a system property
or configuring during application startup (e.g., based on settings used
to configure the application).

Additionally, we introduce the usage of forbidden-apis to prevent future
uses of Runtime#availableProcessors from creeping. Future work should
enable the bundled signatures and clean up uses of deprecated and
other forbidden methods.

Result:

Netty can be configured to not use the underlying number of processors,
but rather the constrained number of processors.
2017-04-23 10:31:17 +02:00
Nikolay Fedorovskikh
0692bf1b6a fix the typos 2017-04-20 04:56:09 +02:00
Norman Maurer
e482d933f7 Add 'io.netty.tryAllocateUninitializedArray' system property which allows to allocate byte[] without memset in Java9+
Motivation:

Java9 added a new method to Unsafe which allows to allocate a byte[] without memset it. This can have a massive impact in allocation times when the byte[] is big. This change allows to enable this when using Java9 with the io.netty.tryAllocateUninitializedArray property when running Java9+. Please note that you will need to open up the jdk.internal.misc package via '--add-opens java.base/jdk.internal.misc=ALL-UNNAMED' as well.

Modifications:

Allow to allocate byte[] without memset on Java9+

Result:

Better performance when allocate big heap buffers and using java9.
2017-04-19 11:45:39 +02:00
Norman Maurer
1b0b8f80cd AbstractScheduledEventExecutor.schedule(...) must accept delay <= 0.
Motivation:

As the javadoc of ScheduledExecutorService state:

Zero and negative delays (but not periods) are also allowed in schedule methods,and are treated as requests for immediate execution.

Modifications:

- Correctly handle delay <= 0.
- Add unit tests.

Result:

Fixes [#6627].
2017-04-19 11:35:50 +02:00
Lukasz Strzalkowski
7bd0905969 Introduce ReferenceCounted.refCnt()
Motivation:

When debugging netty memory leaks, it's sometimes helpful to
print the object's reference count.

Modifications:

Add `refCnt` methods to set of already exitsting helpers for ref coutned
objects.

Result:

Users will have utility to print object's ref count without much of a
boilerplate.
2017-04-17 19:43:44 +02:00
Norman Maurer
7b6119a0a4 Allow to free direct buffers on java9 again
Motivation:

Java9 adds a new method to Unsafe which allows to free direct ByteBuffer via the cleaner without the need to use an commandline arguments.

Modifications:

- Add Cleaner interface
- Add CleanerJava9 which will be used when using Java9+ and take care of release direct ByteBuffer
- Let Cleaner0 implement Cleaner

Result:

Be able to free direct ByteBuffer on Java9+ again without any commandline arguments.
2017-04-17 19:40:52 +02:00
Norman Maurer
493a8135f8 Ensure test introduced in 5c1c14286d also works on Java9 2017-03-29 22:43:00 +02:00
Norman Maurer
5c1c14286d Allow negative memoryAddress when calling PlatformDependent0.newDirectBuffer(...)
Motivation:

When UNSAFE.allocateMemory is returning an address whose high bit is set we currently throw an IllegalArgumentException. This is not correct as it may return a negative number on at least sparc.

Modifications:

- Allow to pass in negative memoryAddress
- Add unit tests

Result:

Correctly validate the memoryAddress and so also work on sparc as expected. Fixes [#6574].
2017-03-29 22:33:34 +02:00
David Dossot
9c1a191696 Trim optional white space in CombinedHttpHeaders values
Motivation:

The updated HTTP/1.x RFC allows for header values to be CSV and separated by OWS [1]. CombinedHttpHeaders should remove this OWS on insertion.

[1] https://tools.ietf.org/html/rfc7230#section-7

Modification:

CombinedHttpHeaders doesn't account for the OWS and returns it back to the user as part of the value.

Result:

Fixes #6452
2017-03-19 08:17:29 -07:00
Norman Maurer
9e6e1a3e7b Use SystemPropertyUtil to access system properties
Motivation:

We should use SystemPropertyUtil to access system properties and so always handle SecurityExceptions.

Modifications:

Use SystemPropertyUtil everywhere.

Result:

Better and consist handling of SecurityException.
2017-03-19 08:09:29 -07:00
Norman Maurer
2b8c8e0805 [maven-release-plugin] prepare for next development iteration 2017-03-10 07:46:17 +01:00
Norman Maurer
1db58ea980 [maven-release-plugin] prepare release netty-4.1.9.Final 2017-03-10 07:45:28 +01:00
Norman Maurer
e12f504ac1 Remove deprecated usage of Mockito methods
Motivation:

We used some deprecated Mockito methods.

Modifications:

- Replace deprecated method usage
- Some cleanup

Result:

No more usage of deprecated Mockito methods. Fixes [#6482].
2017-03-09 20:59:54 +01:00
Norman Maurer
9ade81ab5b Use system property to detect if root is running the program
Motivation:

We forked a new process to detect if the program is run by root. We should better just use user.name system property

Modifications:

- Change PlatformDependent.isRoot0() to read the user.name system property to detect if root runs the program and rename it to maybeSuperUser0().
- Rename PlatformDependent.isRoot() to maybeSuperUser() and let it init directly in the static block

Result:

Less heavy way to detect if the program is run by root.
2017-03-09 11:16:10 +01:00
Norman Maurer
c6a3cae269 UnorderedThreadPoolEventExecutor consumes 100% CPU when idle
Motivation:

When UnorderedThreadPoolEventExecutor.execute / submit etc is called it will consume up to 100 % CPU even after the task was executed.

Modifications:

Add a special wrapper which we will be used in execute(...) to wrap the submitted Runnable. This is needed as  ScheduledThreadPoolExecutor.execute(...) will delegate to submit(...) which will then use decorateTask(...). The problem with this is that decorateTask(...) needs to ensure we only do our own decoration if we not call from execute(...) as otherwise we may end up creating an endless loop because DefaultPromise will call  EventExecutor.execute(...) when notify the listeners of the promise.

Result:

Fixes [#6507].
2017-03-09 11:12:42 +01:00
Nikolay Fedorovskikh
2993760e92 Fix misordered 'assertEquals' arguments in tests
Motivation:

Wrong argument order in some 'assertEquals' applying.

Modifications:

Flip compared arguments.

Result:

Correct `assertEquals` usage.
2017-03-08 22:48:37 -08:00
Scott Mitchell
8b21cd9e35 PlatformDependent0 should enforce array index scale for byte[] explicitly
Motivation:
PlatformDependent0 makes assumptions that the array index scale for byte[] is always 1. If this is not the case the results from methods which make this assumption will be undefined.

Modifications:
- PlatformDependent0 should check if unsafe.arrayIndexScale(byte[].class) is not 1, and if so not use unsafe

Result:
Assumptions made by optimizations in PlatformDependent0 which use byte[] are explicitly enforced.
2017-03-08 10:02:37 -08:00
Norman Maurer
1e5d33f8d5 Remove unused code
Motivation:

Cleanup PlatformDependent* and remove unused code.

Modifications:

Code cleanup

Result:

Removed unused code
2017-03-07 21:33:41 +01:00
Norman Maurer
1392bc351f Correctly build socketaddress string, followup of 8b2badf44f 2017-03-01 20:05:20 +01:00
Norman Maurer
0514b0c61b Only add port to HOST header value if needed
Motivation:

We only need to add the port to the HOST header value if its not a standard port.

Modifications:

- Only add port if needed.
- Fix parsing of ipv6 address which is enclosed by [].

Result:

Fixes [#6426].
2017-03-01 19:08:19 +01:00
Nikolay Fedorovskikh
943f4ec7ff Make methods 'static' where it missed
Motivation:

Calling a static method is faster then dynamic

Modifications:

Add 'static' keyword for methods where it missed

Result:

A bit faster method calls
2017-02-23 11:01:57 +01:00
Norman Maurer
7d08b4fc35 Remove optional dependency on javassist
Motivation:

We shipped a javassist based implementation for typematching and logged a confusing debug message about missing javassist. We never were able to prove it really gives any perf improvements so we should just remove it.

Modifications:

- Remove javassist dependency and impl
- Fix possible classloader deadlock as reported by intellij

Result:

Less code to maintain and less confusing log message.
2017-02-23 07:54:42 +01:00
Nikolay Fedorovskikh
0623c6c533 Fix javadoc issues
Motivation:

Invalid javadoc in project

Modifications:

Fix it

Result:

More correct javadoc
2017-02-22 07:31:07 +01:00
Nikolay Fedorovskikh
634a8afa53 Fix some warnings at generics usage
Motivation:

Existing warnings from java compiler

Modifications:

Add/fix type parameters

Result:

Less warnings
2017-02-22 07:29:59 +01:00
Norman Maurer
67be7c5b9f Log why it was not possible to use ByteBuffer.cleaner
Motivation:

We should log why we can not use ByteBuffer.cleaner and so maybe allow the user to fix it.

Modifications:

- Use Unsafe to access the field
- Log the exception when we can not use ByteBuffer.cleaner

Result:

Easier to debug why using cleaner is not possible.
2017-02-17 07:34:34 +01:00
Norman Maurer
fbf0e5f4dd Prefer JDK ThreadLocalRandom implementation over ours.
Motivation:

We have our own ThreadLocalRandom implementation to support older JDKs . That said we should prefer the JDK provided when running on JDK >= 7

Modification:

Using ThreadLocalRandom implementation of the JDK when possible.

Result:

Make use of JDK implementations when possible.
2017-02-16 15:44:00 -08:00
Scott Mitchell
4d7d478a3d Update JCTools to 2.0.1 2017-02-16 15:09:35 -08:00
Norman Maurer
6ac5f35077 Use Unsafe to read ByteBuffer.address field to make it work on Java9 as well.
Motivation:

Java9 does not allow changing access level via reflection by default. This lead to the situation that netty disabled Unsafe completely as ByteBuffer.address could not be read.

Modification:

Use Unsafe to read the address field as this works on all Java versions.

Result:

Again be able to use Unsafe optimisations when using Netty with Java9
2017-02-16 20:40:59 +01:00
Norman Maurer
1843b31885 Guard against having NetworkInterface.getNetworkInterfaces() return null
Motivation:

NetworkInterface.getNetworkInterfaces() may return null if no network interfaces are found. We should guard against it.

Modifications:

Check for null return value.

Result:

Fixes [#6384]
2017-02-16 07:59:31 +01:00
Jason Tedor
d59b4840c1 Cleanup ChannelId handling of basic methods
Motiviation:

Simplify implementation of compareTo/equals/hashCode for ChannelIds.

Modifications:

We simplfy the hashCode implementation for DefaultChannelId by not
making it random, but making it based on the underlying data. We fix the
compareTo implementation for DefaultChannelId by using lexicographic
comparison of the underlying data array. We fix the compareTo
implementation for CustomChannelId to avoid the possibility of overflow.

Result:

Cleaner code that is easier to maintain.
2017-02-15 11:53:36 -08:00
Norman Maurer
84188395be Remove backports of JDK8 classes
Motivation:

Java8 is out now for some time and JDK7 is no longer supported officially. We should remove all our backports and just use what the JDK provides us. This also will allow us to use intrinsics that are offered by the JDK implementations.

Modifications:

Remove all backports of jdk8 classes.

Result:

Use what the JDK offers us. This also fixes [#5458]
2017-02-15 20:44:23 +01:00
Dmitriy Dumanskiy
506f0d8f8c Cleanup : String.length() == 0 replaced with String.isEmpty, removed unnecessary assert, class cast 2017-02-14 15:36:42 +01:00
Norman Maurer
90bc605477 Initialization of PlatformDependent0 fails on Java 9
Motivation:

Initialization of PlatformDependent0 fails on Java 9 in static initializer when calling setAccessible(true).

Modifications:

Add RefelectionUtil which can be used to safely try if setAccessible(true) can be used or not and if not fail back to non reflection.

Result:

Fixed [#6345]
2017-02-14 10:15:27 +01:00
fenik17
0cf3f54a8d Adding 'final' keyword for private fields where possible
Motivation

Missing 'final' keyword for fields

Modifications

Add 'final' for fields where possible

Result

More safe and consistent code
2017-02-14 08:29:15 +01:00
Scott Mitchell
a1b5b5dcca EpollRecvByteAllocatorHandle doesn't inform delegate of more data
Motivation:
EpollRecvByteAllocatorHandle intends to override the meaning of "maybe more data to read" which is a concept also used in all existing implementations of RecvByteBufAllocator$Handle but the interface doesn't support overriding. Because the interfaces lack the ability to propagate this computation EpollRecvByteAllocatorHandle attempts to implement a heuristic on top of the delegate which may lead to reading when we shouldn't or not reading data.

Modifications:
- Create a new interface ExtendedRecvByteBufAllocator and ExtendedHandle which allows the "maybe more data to read" between interfaces
- Deprecate RecvByteBufAllocator and change all existing implementations to extend ExtendedRecvByteBufAllocator
- transport-native-epoll should require ExtendedRecvByteBufAllocator so the "maybe more data to read" can be propagated to the ExtendedHandle

Result:
Fixes https://github.com/netty/netty/issues/6303.
2017-02-13 17:42:24 -08:00
Scott Mitchell
54c9ecf682 DnsNameResolver should respect /etc/resolv.conf and /etc/resolver
Motivation:
The JDK uses gethostbyname for blocking hostname resoltuion. gethostbyname can be configured on Unix systems according to [1][2]. This may impact the name server that is used to resolve particular domains or just override the default fall-back resolver. DnsNameResolver currently ignores these configuration files which means the default resolution behavior is different than the JDK. This may lead to unexpected resolution failures which succeed when using the JDK's resolver.

Modifications:
- Add an interface which can override what DnsServerAddressStream to use for a given hostname
- Provide a Unix specific implementation of this interface and implement [1][2]. Some elements may be ignored sortlist, timeout, etc...

Result:
DnsNameResolver behaves more like the JDK resolver by default.

[1] https://linux.die.net/man/5/resolver
[2] https://developer.apple.com/legacy/library/documentation/Darwin/Reference/ManPages/man5/resolver.5.html
2017-02-13 11:54:09 -08:00
md-5
fe522fb18e Update Groovy to 2.4.8 for Java 9-ea+154 support.
Motivation:

Update of Groovy is needed to compile on recent java9 releases.

Modification:

Update to Groovy 2.4.8

Result:

This change allows Netty to be successfully compiled on more recent Java 9 previews.
2017-02-11 14:09:15 +01:00
Dmitriy Dumanskiy
c95517f759 Cleanup : removed unnecessary 'continue', explicit array creation, unwrapping 2017-02-10 12:25:01 +01:00
Scott Mitchell
14b902fced Deprecate and ignore ResourceLeakDetector's maxActive parameter
Motivation:
ResourceLeakDetector supports a parameter called maxActive. This parameter is used in attempt to limit the amount of objects which are being tracked for leaks at any given time, and generates an error log message if this limit is exceeded. This assumes that there is a relationship between leak sample rate and object lifetime for objects which are already being tracked. This relationship may appear to work in cases were there are a single leak record per object and those leak records live for the lifetime of the application but in general this relationship doesn't exist. The original motivation was to provide a limit for cases such as HashedWheelTimer to limit the number of instances which exist at any given time. This limit is not enforced in all circumstances in HashedWheelTimer (e.g. if the thread is a daemon) and can be implemented outside ResourceLeakDetector.

Modifications:
- Deprecate all methods which interact with maxActive in ResourceLeakDetectorFactory and ResourceLeakDetector
- Remove all logic related to maxActive in ResourceLeakDetector
- HashedWheelTimer implements its own logic to impose a limit and warn users if too many instances exists at any given time.

Result:
Fixes https://github.com/netty/netty/issues/6225.
2017-02-08 19:59:58 -08:00