Save the setImmediate() callback arguments into an array instead of a
closure, and invoke the callback on the arguments from an optimizable
function.
60% faster setImmediate with 0 args (15% if self-recursive)
4x faster setImmediate with 1-3 args, 2x with > 3
seems to be faster with less memory pressure when memory is tight
Changes:
- use L.create() to build faster lists
- use runCallback() from within tryOnImmediate()
- save the arguments and do not build closures for the callbacks
PR-URL: https://github.com/nodejs/node/pull/6436
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Now uses a new L.create() factory to create access-optimized linkedlist
objects.
PR-URL: https://github.com/nodejs/node/pull/6436
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Added safe internal references for 'clearTimeout(..)', 'active(..)', and
'unenroll(..)'. Changed various API refs from 'export.*' to use these
safe internal references.
Now, overwriting the global API identifiers does not create potential
breakage and/or race conditions. See Issue #2493.
PR-URL: https://github.com/nodejs/node/pull/5882
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Fixes: https://github.com/nodejs/node/issues/2493
This commit improves setImmediate() performance by moving the
try-finally block that wraps callback execution into a separate
function because currently v8 never tries to optimize functions
that contain try-finally blocks.
With this change, there is a ~20-40% improvement in the included
setImmediate() depth benchmarks. The breadth benchmarks show a slight
improvement.
PR-URL: https://github.com/nodejs/node/pull/4169
Reviewed-By: Minwoo Jung <jmwsoft@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Describes the How and Why of the timers implementation, as well as
adding comments in spots that should allow for an easier understanding
about what is going on.
The timers implementation is very efficient, at a cost.
That cost is readable understandability, and this aims to improve that.
PR-URL: https://github.com/nodejs/node/pull/4007
Reviewed-By: Rod Vagg <rod@vagg.org>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: Julien Gilli <jgilli@nodejs.org>
Reviewed-By: Chris Dickinson <christopher.s.dickinson@gmail.com>
Consolidates the implementation of regular and internal (_unrefActive)
timers.
Also includes a couple optimizations:
- Isolates the try/catch from listOnTimeout() in a new tryOnTimeout().
- Uses a TimersList constructor as the base for linkedlists.
Additionally includes other cleanup and clarification, such as a rename
of "Timer" to "TimerWrap".
PR-URL: https://github.com/nodejs/node/pull/4007
Reviewed-By: Rod Vagg <rod@vagg.org>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: Julien Gilli <jgilli@nodejs.org>
Reviewed-By: Chris Dickinson <christopher.s.dickinson@gmail.com>
Enable `space-unary-ops` in `.eslintrc`. This prohibits things like:
i ++ // use `i++` instead
typeof(foo) // use `typeof foo` or `typeof (foo)` instead
Ref: https://github.com/nodejs/node/pull/4772#discussion_r51732299
PR-URL: https://github.com/nodejs/node/pull/5063
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Michaël Zasso <mic.besace@gmail.com>
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: James M Snell <jasnell@gmail.com>
`setTimeout()`, `setInterval()` and `setIntermediate` currently
throw errors when receiving non-function objects as their first
argument, but only do so when trying to execute the callback,
i.e. after the waited time has passed. This may complicate
debugging when a lot of calls to `setTimeout()`/etc. are involved,
so failing as early as possible seems like a good idea.
`setTimeout()` historically ignored an falsy first
argument, while the other functions do not and throw instead.
This patch changes this behaviour to make all three match and
adds remarks in the corresponding documentation.
PR-URL: https://github.com/nodejs/node/pull/4362
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: Rod Vagg <rod@vagg.org>
ES6 arrow functions are much more efficient than `.bind()` functions.
PR-URL: https://github.com/nodejs/node/pull/4038
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
This commit fixes some error messages that are not consistent with
some general rules which most of the error messages follow.
PR-URL: https://github.com/nodejs/node/pull/3374
Reviewed-By: Roman Reiss <me@silverwind.io>
Instead of creating new timer - reuse the timer from the freelist. This
won't make the freelist timer active for the duration of `uv_close()`,
and will let the event-loop exit properly.
Fix: #1264
PR-URL: https://github.com/nodejs/node/pull/3407
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
63644dd1cd introduced a regression caused by everyone's favourite
JavaScript feature: undefined < 0 === undefined >= 0.
Add a case to the existing tests to cover this scenario and then add
the check for undefined that makes the test pass.
PR-URL: https://github.com/nodejs/node/pull/3331
Reviewed-By: Fedor Indutny <fedor@indutny.com>
Reviewed By: Evan Lucas <evanlucas@me.com>
Deprecate _linklist and add test to confirm internal linklist and
public _linklist are the same.
PR-URL: https://github.com/nodejs/node/pull/3078
Reviewed-By: Сковорода Никита Андреевич <chalkerx@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
insert() is only called from one place where there is already a check
that msecs is greater than or equal to zero, so do not repeat the check
inside insert().
timers.active() is not documented and should not be exposed, but since
it is exposed for now, let's test it.
PR-URL: https://github.com/nodejs/node/pull/3143
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
Most calls to ref() and unref() are chainable, timers should be
chainable, too.
Typical use:
var to = setTimeout(ontimeout, 123).unref();
PR-URL: https://github.com/nodejs/node/pull/2905
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Trevor Norris <trevnorris@nodejs.org>
This commit addresses most of the review comments in
https://github.com/nodejs/node/pull/2540, which are kept in this
separate commit so as to better preserve the prior two patches as they
landed in 0.12.
This commit:
- Fixes a bug with unrefActive timers and disposed domains.
- Fixes a bug with unrolling an unrefActive timer from another.
- Adds a test for both above bugs.
- Improves check logic, making it stricter, simpler, or both.
- Optimizes nicer with a smaller, separate function for the try/catch.
Fixes: https://github.com/nodejs/node-convergence-archive/issues/23
Ref: https://github.com/nodejs/node/issues/268
PR-URL: https://github.com/nodejs/node/pull/2540
Reviewed-By: bnoordhuis - Ben Noordhuis <info@bnoordhuis.nl>
Before this change, _unrefActive would keep the unrefList sorted when
adding a new timer.
Because _unrefActive is called extremely frequently, this linear scan
(O(n) at worse) would make _unrefActive show high in the list of
contributors when profiling CPU usage.
This commit changes _unrefActive so that it doesn't try to keep the
unrefList sorted. The insertion thus happens in constant time.
However, when a timer expires, unrefTimeout has to go through the whole
unrefList because it's not ordered anymore.
It is usually not large enough to have a significant impact on
performance because:
- Most of the time, the timers will be removed before unrefTimeout is
called because their users (sockets mainly) cancel them when an I/O
operation takes place.
- If they're not, it means that some I/O took a long time to happen, and
the initiator of subsequents I/O operations that would add more timers
has to wait for them to complete.
With this change, _unrefActive does not show as a significant
contributor in CPU profiling reports anymore.
Fixes: https://github.com/joyent/node/issues/8160
Signed-off-by: Timothy J Fontaine <tjfontaine@gmail.com>
Conflicts:
lib/timers.js
Fixes: https://github.com/nodejs/node-convergence-archive/issues/23
Ref: https://github.com/nodejs/node/issues/268
PR-URL: https://github.com/nodejs/node/pull/2540
Reviewed-By: bnoordhuis - Ben Noordhuis <info@bnoordhuis.nl>
Partially revert 776b73b243.
Following code crashes after backported timer leak fixes:
```javascript
var timer = setInterval(function() {
clearInterval(timer);
}, 10);
timer.unref();
```
Note that this is actually tested in a `test-timers-unref.js`, and is
crashing only with 776b73b243.
Calling `clearInterval` leads to the crashes in case of `.unref()`ed
timers, and might lead to a extra timer spin in case of regular
intervals that was closed during the interval callback. All of these
happens because `.unref()`ed timer has it's own `_handle` and was used
after the `.close()`.
PR-URL: https://github.com/iojs/io.js/pull/1330
Reviewed-by: Trevor Norris <trev.norris@gmail.com>
This change fixes a regression introduced by commit
0d051238be, which contained a typo that
would cause every unrefd interval to fire only once.
Fixes: https://github.com/joyent/node/issues/8900
Reviewed-By: Timothy J Fontaine <tjfontaine@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-by: Trevor Norris <trev.norris@gmail.com>
Uses `null` as the false-y value for `_repeat` as like other properties.
Removes un-reachable statement in setInterval’s `wrapper()`.
PR-URL: https://github.com/iojs/io.js/pull/1272
Reviewed-by: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Calling this.unref() during the callback of SetTimeout caused the
callback to get executed twice because unref() didn't expect to be
called during that time and did not stop the ref()ed Timeout but
did start a new timer. This commit prevents the new timer creation
when the callback was already called.
Fixes: https://github.com/iojs/io.js/issues/1191
Reviewed-by: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
PR-URL: https://github.com/iojs/io.js/pull/1231
The common case is where setInterval() is called with two arguments,
the callback and the timeout. Specifying optional arguments in
the parameter list forces common case calls to go through an arguments
adaptor stack frame.
PR-URL: https://github.com/iojs/io.js/pull/1221
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
The common case is where setTimeout() is called with two arguments,
the callback and the timeout. Specifying optional arguments in the
parameter list forces common case calls to go through an arguments
adaptor stack frame.
PR-URL: https://github.com/iojs/io.js/pull/1221
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
setImmediate, setTimeout, and setInterval were called in an inefficient
way, especially in the presence of arguments. This optimization
improves their performance, with special cases for up to 4 arguments.
Performance of setImmediate increases with 35%, setInterval with 60%,
setTimeout with 70%.
PR-URL: https://github.com/iojs/io.js/pull/406
Reviewed-by: Trevor Norris <trev.norris@gmail.com>
Reviewed-by: Christian Tellnes <christian@tellnes.com>
This commit restricts socket timeouts non-negative, finite
numbers. Any other value throws a TypeError or RangeError.
This prevents subtle bugs that can happen due to type
coercion.
Fixes: https://github.com/joyent/node/issues/8618
PR-URL: https://github.com/joyent/node/pull/8884
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: Timothy J Fontaine <tjfontaine@gmail.com>
Conflicts:
lib/timers.js
test/simple/test-net-settimeout.js
test/simple/test-net-socket-timeout.js
This commit replaces a number of var statements throughout
the lib code with const statements.
PR-URL: https://github.com/iojs/io.js/pull/541
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
The copyright and license notice is already in the LICENSE file. There
is no justifiable reason to also require that it be included in every
file, since the individual files are not individually distributed except
as part of the entire package.
Fixes the following assertion on slow systems, like our ARM buildbot:
$ out/Debug/node test/simple/test-timers-unref.js
node: ../src/async-wrap-inl.h:101: v8::Handle<v8::Value>
node::AsyncWrap::MakeCallback(uint32_t, int,
v8::Handle<v8::Value>*): Assertion `cb_v->IsFunction()' failed.
Aborted
The reason it only manifests on slow systems is that the test starts
a 1 ms interval timer, then defers timer.unref.bind({}) to the next
tick. On fast systems, the test completes in under a millisecond,
before the callback is called.
This commit makes timer.unref() check that the receiver actually has
a timeout callback property.
Fixes#13.
PR-URL: https://github.com/iojs/io.js/pull/165
Reviewed-By: Rod Vagg <rod@vagg.org>
Async Listener was the name of the user-facing JS API, and is being
completely removed. Instead low level hooks directly into the mechanism
that AL used will be introduced in a future commit.
PR-URL: https://github.com/joyent/node/pull/8110
Signed-off-by: Trevor Norris <trev.norris@gmail.com>
Reviewed-by: Fedor Indutny <fedor@indutny.com>
Reviewed-by: Alexis Campailla <alexis@janeasystems.com>
Reviewed-by: Julien Gilli <julien.gilli@joyent.com>
Async Listener was the name of the user-facing JS API, and is being
completely removed. Instead low level hooks directly into the mechanism
that AL used will be introduced in a future commit.
PR-URL: https://github.com/joyent/node/pull/8110
Signed-off-by: Trevor Norris <trev.norris@gmail.com>
Reviewed-by: Fedor Indutny <fedor@indutny.com>
Reviewed-by: Alexis Campailla <alexis@janeasystems.com>
Reviewed-by: Julien Gilli <julien.gilli@joyent.com>
Turn on strict mode for the files in the lib/ directory. It helps
catch bugs and can have a positive effect on performance.
PR-URL: https://github.com/node-forward/node/pull/64
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Fedor Indutny <fedor@indutny.com>
Original commit message:
timers: use uv_now instead of Date.now
This saves a few calls to gettimeofday which can be expensive, and
potentially subject to clock drift. Instead use the loop time which
uses hrtime internally.
In addition to the backport, this commit:
- keeps _idleStart timers' property which is still set to
Date.now() to avoid breaking existing code that uses it, even if
its use is discouraged.
- adds automated tests. These tests use a specific branch of
libfaketime that hasn't been submitted upstream yet. libfaketime
is git cloned if needed when running automated tests.
Signed-off-by: Timothy J Fontaine <tjfontaine@gmail.com>
If two timers run on the same tick, and the first timer uses a domain,
and then catches an exception and disposes of the domain, then the
second timer never runs. (And even if the first timer does not dispose
of the domain, the second timer could run under the wrong domain.)
This happens because timer.js uses "process.nextTick()" to schedule
continued processing of the timers for that tick. However, there was
an exception inside a domain, then "process.nextTick()" runs under
the domain of the first timer function, and will do nothing if
the domain has been disposed.
To avoid this, we temporarily save the value of "process.domain"
before calling nextTick so that it does not run inside any domain.
The AsyncListener API has been moved into the "tracing" module in order
to keep the process object free from unnecessary clutter.
Signed-off-by: Timothy J Fontaine <tjfontaine@gmail.com>
The ability to add/remove an AsyncListener to an object after its
creation was an artifact of trying to get AL working with the domain
module. Now that is no longer necessary and other features are going to
be implemented that would be affected by this functionality. So the code
will be removed for now to simplify the implementation process.
In the future this code will likely be reintroduced, but after some
other more important matters have been addressed.
None of this functionality was documented, as is was meant specifically
for domain specific implementation work arounds.
Signed-off-by: Timothy J Fontaine <tjfontaine@gmail.com>
Before when an AsyncListener object was created and the "create"
callback returned a value, it was necessary to construct a new Object
with the same callbacks but add a place for the new storage value.
Now, instead, a separate storage array is kept on the context which is
used for any return value of the "create" callback. This significantly
reduces the number of Objects that need to be created.
Also added a flags property to the context to quickly check if a
specific callback was available either on the context or on the
AsyncListener instance itself.
Few other minor changes for readability that were difficult to separate
into their own commit.
This has not been optimized yet.
This is a slightly modified revert of bc39bdd.
Getting domains to use AsyncListeners became too much of a challenge
with many edge cases. While this is still a goal, it will have to be
deferred for now until more test coverage can be provided.
The domain module has been switched over to use the domain module API as
much as currently possible. There are still some hooks in the
EventEmitter, but hopefully we can remove those in the future.
AsyncListener is a JS API that works in tandem with the AsyncWrap class
to allow the user to be alerted to key events in the life cycle of an
asynchronous event. The AsyncWrap class has its own MakeCallback
implementation that core will be migrated to use, and uses state sharing
techniques to allow quicker communication between JS and C++ whether the
async event callbacks need to be called.
Jeremy Whitlock
Andras
Kyle Simpson
Jeremiah Senkpiel
Brian White
Rich Trott
Anna Henningsen
Andrei Sedoi
micnic
Fedor Indutny
Ryan Graham
Sam Roberts
Julien Gilli
Trevor Norris
Roman Reiss
Ben Noordhuis
Ruben Verborgh
cjihrig
Yosuke Furukawa
isaacs
Taojie
Greg Brail
pflannery