Since we are taking control of the microtask queue it makes sense to
disable autorun and only run microtasks when necessary. Just setting
isolate->SetAutorunMicrotasks(false) would cause _tickCallback() not to
be called.
Automatically running the microtask queue will cause it to run:
* After callback invocation
* Inside _tickCallback()
* After _tickCallback() invocation
The third one is unnecessary as the microtask queue is guaranteed to be
empty at this point. The first only needs to be run manually when
_tickCallback() isn't going to be called by MakeCallback().
Reviewed-by: Trevor Norris <trev.norris@gmail.com>
The two main goals of this change are:
- To make it easier to build the Intl option using ICU (particularly,
using a newer ICU than v8/Chromium's version)
- To enable a much smaller ICU build with only English support The goal
here is to get node.js binaries built this way by default so that the
Intl API can be used. Additional data can be added at execution time
(see Readme and wiki)
More details are at https://github.com/joyent/node/pull/7719
In particular, this change adds the "--with-intl=" configure option to
provide more ways of building "Intl":
- "full-icu" picks up an ICU from deps/icu
- "small-icu" is similar, but builds only English
- "system-icu" uses pkg-config to find an installed ICU
- "none" does nothing (no Intl)
For Windows builds, the "full-icu" or "small-icu" options are added to
vcbuild.bat.
Note that the existing "--with-icu-path" option is not removed from
configure, but may not be used alongside the new option.
Wiki changes have already been made on
https://github.com/joyent/node/wiki/Installation
and a new page created at
https://github.com/joyent/node/wiki/Intl
(marked as provisional until this change lands.)
Summary of changes:
* README.md : doc updates
* .gitignore : added "deps/icu" as this is the location where ICU is
unpacked to.
* Makefile : added the tools/icu/* files to cpplint, but excluded a
problematic file.
* configure : added the "--with-intl" option mentioned above.
Calculate at config time the list of ICU source files to use and data
packaging options.
* node.gyp : add the new files src/node_i18n.cc/.h as well as ICU
linkage.
* src/node.cc : add call into
node::i18n::InitializeICUDirectory(icu_data_dir) as well as new
--icu-data-dir option and NODE_ICU_DATA env variable to configure ICU
data loading. This loading is only relevant in the "small"
configuration.
* src/node_i18n.cc : new source file for the above Initialize..
function, to setup ICU as needed.
* tools/icu : new directory with some tools needed for this build.
* tools/icu/icu-generic.gyp : new .gyp file that builds ICU in some new
ways, both on unix/mac and windows.
* tools/icu/icu-system.gyp : new .gyp file to build node against a
pkg-config detected ICU.
* tools/icu/icu_small.json : new config file for the "English-only" small
build.
* tools/icu/icutrim.py : new tool for trimming down ICU data. Reads the
above .json file.
* tools/icu/iculslocs.cc : new tool for repairing ICU data manifests
after trim operation.
* tools/icu/no-op.cc : dummy file to force .gyp into using a C++ linker.
* vcbuild.bat : added small-icu and full-icu options, to call into
configure.
* Fixed toolset dependencies, see
https://github.com/joyent/node/pull/7719#issuecomment-54641687
Note that because of a bug in gyp {CC,CXX}_host must also be set.
Otherwise gcc/g++ will be used by default for part of the build.
Reviewed-by: Trevor Norris <trev.norris@gmail.com>
Reviewed-by: Fedor Indutny <fedor@indutny.com>
When V8 started supporting Promises natively it also introduced a
microtack queue. This feature operates similar to process.nextTick(),
and created an issue where neither knew when the other had run. This
patch has nextTick() call the microtask queue runner at the end of
processing callbacks in the nextTickQueue.
Fixes: https://github.com/joyent/node/issues/7714
Reviewed-by: Trevor Norris <trev.norris@gmail.com>
There is only one call site that uses it and that can do the checks
itself. Removes ~15 lines of code.
Reviewed-by: Trevor Norris <trev.norris@gmail.com>
The REPL global object lazy loads modules by placing getters for each.
This causes MakeDomainCallback() to be run if a native module is loaded
from the REPL, but if the domain module hasn't been loaded then there
are no enter/exit callbacks to be called. Causing an assert() to fail.
Fix the issue by conditionally running the callback instead of asserting
it is available. Also add "addon" test to verify the fix.
Fixes: #8231
Signed-off-by: Trevor Norris <trev.norris@gmail.com>
Pass in the v8::Context, instead of creating it
within CreateEnvironment. This allows callers
to use a pre-existing context.
Signed-off-by: Fedor Indutny <fedor@indutny.com>
Previously v8's WriteUtf8 function would produce invalid utf-8 output
when encountering unmatched surrogate code units [1]. The new
REPLACE_INVALID_UTF8 option fixes that by replacing invalid code points
with the unicode replacement character.
[1]: JS Strings are defined as arrays of 16 bit unsigned integers. There
is no unicode enforcement, so one can easily end up with invalid unicode
code unit sequences inside a string.
Replace the CONTAINER_OF macro with a template function that is as
type-safe as a reinterpret_cast<> of an arbitrary pointer can be made.
Signed-off-by: Fedor Indutny <fedor@indutny.com>
Otherwise it's not possible to check from inside a destructor if V8 is
still alive with v8::V8::IsDead(). In V8 3.25, that function returns
true until the last isolate is destroyed.
This used to work in v0.10 and is a standard trick to dispose persistent
handles conditionally.
Signed-off-by: Fedor Indutny <fedor@indutny.com>
When process._setupNextTick() was introduced as the means to properly
initialize the mechanism behind process.nextTick() a chunk of code was
left behind that assigned memory to process._tickInfo. This code is no
longer needed.
`process.uptime()` interface will return the amount of time the
current process has been running. To achieve this it was caching the
`uv_uptime` value at program start, and then on the call to
`process.uptime()` returning the delta between the two values.
`uv_uptime` is defined as the number of seconds the operating system
has been up since last boot. On sunos this interface uses `kstat`s
which can be a significantly expensive operation as it requires
exclusive access, but because of the design of `process.uptime()` node
*had* to always call this on start. As a result if you had many node
processes all starting at the same time you would suffer lock
contention as they all tried to read kstats.
Instead of using `uv_uptime` to achieve this, the libuv loop already
has a concept of current loop time in the form of `uv_now()` which is
in fact monotonically increasing, and already stored directly on the
loop. By using this value at start every platform performs at least
one fewer syscall during initialization.
Since the interface to `uv_uptime` is defined as seconds, in the call
to `process.uptime()` we now `uv_update_time` get our delta, divide by
1000 to get seconds, and then convert to an `Integer`. In 0.12 we can
move back to `Number::New` instead and not lose precision.
Caveat: For some platforms `uv_uptime` reports time monotonically
increasing regardless of system hibernation, `uv_now` interface is
also monotonically increasing but may not reflect time spent in
hibernation.
The two biggest changes are that v8::Script::New() has been removed and
that a v8::Script object now has to be explicitly bound to a context if
you want to run it from another context.
We can accommodate both changes without breaking the vm module's public
API or even the internal JS API.
Improve on commit b55c9d6 by not requiring that switches are comma
separated. This commit makes `./configure --v8-options="--foo --bar"`
work and takes special care to properly escape quotes in the options
string.
The default entropy source is /dev/urandom on UNIX platforms, which is
okay but we can do better by seeding it from OpenSSL's entropy pool.
On Windows we can certainly do better; on that platform, V8 seeds the
random number generator using only the current system time.
Fixes#6250.
NB: This is a back-port of commit 7ac2391 from the master branch that
for some reason never got back-ported to the v0.10 branch.
The default on UNIX platforms in v0.10 is different and arguably worse
than it is with master: if no entropy source is provided, V8 3.14 calls
srandom() with a xor of the PID and the current time in microseconds.
That means that on systems with a coarse system clock, the initial
state of the PRNG may be easily guessable.
The situation on Windows is even more dire because there the PRNG is
seeded with only the current time... in milliseconds.
`env.h` is an internal header file and should not be copied or exposed
to the users.
Additionally, export convenience `Throw*` methods with `v8::Isolate*` as
a first argument.
Previously if you cached process.nextTick and then require('domain')
subsequent nextTick() calls would not be caught because enqueued
functions were taking the wrong path. This keeps nextTick to a single
function reference and changes the implementation details after domain
has been required.
When `setImmediate(cb)` is called in `beforeExit` event handler the
consequent `uv_run(..., UV_RUN_NOWAIT)` may return `0`, even if there
was some active handles at start.
Fixes simple/test-beforeexit-event.js.
Unlike the 'exit' event, this event allows the user to schedule more
work and thereby postpone the exit. That also means that the
'beforeExit' event may be emitted many times, see the attached test
case for an example.
Refs #6305.
Try embedding the ` ... ^` lines inside the `SyntaxError` (or any other
native error) object before giving up and printing them to the stderr.
fix#6920fix#1310
Create a new HandleScope before looking up the object context with
v8::Object::CreationContext(), else we leak the Local<Context> into
the current HandleScope.
That's relatively harmless unless the HandleScope is long-lived and
MakeCallback() is called a lot. In a scenario like that, we may end
up leaking a lot of memory.
What is unfortunate about this change is that we're trying hard to
eradicate the node_isolate global. Longer term, we will probably have
to change the MakeCallback() prototype to one that requires an explicit
v8::Isolate* argument.
Make it possible to invoke MakeCallback() on a v8::Value but only for
the variant that takes a v8::Function as the thing to call.
The const char* and v8::String variants still require a v8::Object
because the function to call is looked up as a property on the receiver,
but that only works when the receiver is an object, not a primitive.
Built-in modules should be automatically registered, replacing the
static module list. Add-on modules should also be automatically
registered via DSO constructors. This improves flexibility in adding
built-in modules and is also a prerequisite to pure-C addon modules.
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>
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.
Trevor Norris
Vladimir Kurchatkin
Steven R. Loomis
Rasmus Christian Pedersen
Ben Noordhuis
Alexis Campailla
Jackson Tian
Dean McNamee
Yazhong Liu
Timothy J Fontaine
Felix Geisendörfer
Fedor Indutny
Geir Hauge
Saúl Ibarra Corretgé
Fedor Indutny
Keith M Wesolowski