Commit Graph

11 Commits

Author SHA1 Message Date
Rich Trott 57a51a00e8 child_process: guard against race condition
It is possible that the internal hnadleMessage() might try to send to
a channel that has been closed. The result can be an AssertionError.
Guard against this.

Fixes: https://github.com/nodejs/node/issues/4205
PR-URL: https://github.com/nodejs/node/pull/4418
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: Johan Bergström <bugs@bergstroem.nu>
2015-12-27 13:10:28 -08:00
Dave 34b535f4ca child_process: flush consuming streams
When a client calls read() with a nonzero argument
on a Socket, that Socket sets this._consuming to true.
It never sets this._consuming back to false.
ChildProcess.flushStdio() currently doesn't flush
any streams where _consuming is truthy. But, that means
that it never flushes any stream that has ever been read from.
This prevents a child process from ever closing if one of
its streams has been read from, causing issue #4049. This
commit allows consuming streams to be flushed, and the
child process to emit a close event.

Fixes: https://github.com/nodejs/node/issues/4049
PR-URL: https://github.com/nodejs/node/pull/4071
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
2015-12-01 09:55:35 -05:00
micnic 20285ad177 lib: Consistent error messages in all modules
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>
2015-11-09 20:08:36 +01:00
Rich Trott cf0130dc0d lib: return boolean from child.send()
Previous change reinstated returning boolean from child.send() but
missed one instance where undefined might be returned instead.

PR-URL: https://github.com/nodejs/node/pull/3577
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
2015-10-29 17:00:27 -07:00
Rich Trott cdcf00a0b9 lib,doc: return boolean from child.send()
The documentation indicates that child.send() returns a boolean but it
has returned undefinined at since v0.12.0. It now returns a boolean per
the (slightly updated) documentation.

PR-URL: https://github.com/nodejs/node/pull/3516
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
2015-10-28 16:21:36 -07:00
Fedor Indutny 36b969ff44 child_process: `null` channel handle on close
`HandleWrap::OnClose` destroys the underlying C++ object and null's the
internal field pointer to it. Therefore there should be no references to
the wrapping JavaScript object.

`null` the process' `_channel` field right after closing it, to ensure
no crashes will happen.

Fix: https://github.com/nodejs/node/issues/2847
PR-URL: https://github.com/nodejs/node/pull/3041
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
2015-09-25 00:17:45 -04:00
Sakthipriyan Vairamani f32a606e37 lib,src: remove usage of events.EventEmitter
The `events` module already exports `EventEmitter` constructor function
So, we don't have to use `events.EventEmitter` to access it.

Refer: https://github.com/nodejs/node/pull/2896

PR-URL: https://github.com/nodejs/node/pull/2921
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: Michaël Zasso <mic.besace@gmail.com>
2015-09-23 00:23:08 +05:30
Evan Lucas 3bc7e58ab0 child_process: use stdio.fd even if it is 0
Previously, in _validateStdio we were using stdio.fd || stdio. If
stdio.fd was falsy (or 0 in the case of stdin), then the entire stdio
object would be passed which could cause a crash.

Fixes: https://github.com/nodejs/node/issues/2721
PR-URL: https://github.com/nodejs/node/pull/2727
Reviewed-By: silverwind - Roman Reiss <me@silverwind.io>
Reviewed-By: cjihrig - Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: indutny - Fedor Indutny <fedor.indutny@gmail.com>
2015-09-07 19:03:19 -05:00
Ben Noordhuis 607aa3ac82 child_process: add callback parameter to .send()
Add an optional callback parameter to `ChildProcess.prototype.send()`
that is invoked when the message has been sent.

Juggle the control channel's reference count so that in-flight messages
keep the event loop (and therefore the process) alive until they have
been sent.

`ChildProcess.prototype.send()` and `process.send()` used to operate
synchronously but became asynchronous in commit libuv/libuv@393c1c5
("unix: set non-block mode in uv_{pipe,tcp,udp}_open"), which landed
in io.js in commit 07bd05b ("deps: update libuv to 1.2.1").

Fixes: https://github.com/nodejs/node/issues/760
PR-URL: https://github.com/nodejs/node/pull/2620
Reviewed-By: trevnorris - Trevor Norris <trev.norris@gmail.com>
Reviewed-By: jasnell - James M Snell <jasnell@gmail.com>
2015-09-06 21:37:58 +10:00
Roman Reiss b5b8ff117c lib: don't use global Buffer
Port of https://github.com/joyent/node/pull/8603

The race condition present in the original PR didn't occur, so no
workaround was needed.

PR-URL: https://github.com/nodejs/io.js/pull/1794
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
2015-06-11 20:24:44 +02:00
Evan Lucas a77c330c32 child_process: expose ChildProcess constructor
Creates two new internal modules (child_process and socket_list) for
better readability.

Exposes the ChildProcess constructor from the child_process module so
one can now `require(‘child_process’).ChildProcess`

Fixes: https://github.com/nodejs/io.js/issues/1751
PR-URL: https://github.com/nodejs/io.js/pull/1760
Reviewed-By: Chris Dickinson <christopher.s.dickinson@gmail.com>
2015-05-28 09:38:29 -05:00