b9e6032d0e
Call a user-defined callback at specific points in the lifetime of an
asynchronous event. Which are on instantiation, just before/after the
callback has been run.
**If any of these callbacks throws an exception, there is no forgiveness
or recovery. A message will be displayed and a core file dumped.**
Currently these only tie into AsyncWrap, meaning no call to a hook
callback will be made for timers or process.nextTick() events. Though
those will be added in a future commit.
Here are a few notes on how to make the hooks work:
- The "this" of all event hook callbacks is the request object.
- The zero field (kCallInitHook) of the flags object passed to
setupHooks() must be set != 0 before the init callback will be called.
- kCallInitHook only affects the calling of the init callback. If the
request object has been run through the create callback it will always
run the before/after callbacks. Regardless of kCallInitHook.
- In the init callback the property "_asyncQueue" must be attached to
the request object. e.g.
function initHook() {
this._asyncQueue = {};
}
- DO NOT inspect the properties of the object in the init callback.
Since the object is in the middle of being instantiated there are some
cases when a getter is not complete, and doing so will cause Node to
crash.
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>
io.js
This repository began as a GitHub fork of joyent/node where contributions, releases, and contributorship are under an open governance model.
We intend to land, with increasing regularity, releases which are compatible with the npm ecosystem that has been built to date for node.js.
To build:
Prerequisites (Unix only):
gccandg++4.8 or newer, orclangandclang++3.3 or newer- Python 2.6 or 2.7
- GNU Make 3.81 or newer
- libexecinfo (FreeBSD and OpenBSD only)
Unix/Macintosh:
./configure
make
make install
If your python binary is in a non-standard location or has a non-standard name, run the following instead:
export PYTHON=/path/to/python
$PYTHON ./configure
make
make install
Prerequisites (Windows only):
- Python 2.6 or 2.7
- Visual Studio 2013 for Windows Desktop, or
- Visual Studio Express 2013 for Windows Desktop
Windows:
vcbuild nosign
You can download pre-built binaries for various operating systems from http://nodejs.org/download/. The Windows and OS X installers will prompt you for the location in which to install. The tarballs are self-contained; you can extract them to a local directory with:
tar xzf /path/to/node-<version>-<platform>-<arch>.tar.gz
Or system-wide with:
cd /usr/local && tar --strip-components 1 -xzf \
/path/to/node-<version>-<platform>-<arch>.tar.gz
To run the tests:
Unix/Macintosh:
make test
Windows:
vcbuild test
To build the documentation:
make doc
To read the documentation:
man doc/node.1
To build Intl (ECMA-402) support:
Note: more docs, including how to reduce disk footprint, are on the wiki.
Use existing installed ICU (Unix/Macintosh only):
pkg-config --modversion icu-i18n && ./configure --with-intl=system-icu
Build ICU from source:
First: Unpack latest ICU
icu4c-##.#-src.tgz (or .zip)
as deps/icu (You'll have: deps/icu/source/...)
Unix/Macintosh:
./configure --with-intl=full-icu
Windows:
vcbuild full-icu