The C++ land `node::FatalException()` is not in fact fatal anymore.
It gives the user a chance to handle the uncaught exception
globally by listening to the `uncaughtException` event. This patch
renames it to `TriggerUncaughtException` in C++ to avoid the confusion.
In addition rename the JS land handler to `onGlobalUncaughtException`
to reflect its purpose - we have to keep the alias
`process._fatalException` and use that for now since it has been
monkey-patchable in the user land.
This patch also
- Adds more comments to the global uncaught exception handling routine
- Puts a few other C++ error handling functions into the `errors`
namespace
- Moves error-handling-related bindings to the `errors` binding.
Refs: 2b252acea4
PR-URL: https://github.com/nodejs/node/pull/28257
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>
Emit the deprecation warning in the `kDefaultUnhandledRejections`
case to reduce the number of branches on unhandled rejection mode -
there is now only one switch case on it.
Also rename `emitWarning()` to `emitUnhandledRejectionWarning()`
to avoid ambiguity with `process.emitWarning()`
PR-URL: https://github.com/nodejs/node/pull/28258
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>
- Use constants instead of a dictionary and add comments
about the behavior of each mode.
- Use switch cases to handle the unhandled rejection modes.
- Rename the run time value of the CLI option from `state`
to `unhandledRejectionsMode`.
- Return in the call site of `emitWarning` when
`--unhandled-rejections=none` instead of inside
the function.
PR-URL: https://github.com/nodejs/node/pull/28228
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Fix a few edge cases and non-obvious issues with nextTick:
1. Emit destroy hook in a try-finally rather than triggering
it before the callback runs.
2. Re-word comment for processPromiseRejections and make sure
it returns true in the rejectionHandled case too.
3. Small readability improvements.
PR-URL: https://github.com/nodejs/node/pull/28047
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
This adds a flag to define the default behavior for unhandled
rejections. Three modes exist: `none`, `warn` and `strict`. The first
is going to silence all unhandled rejection warnings. The second
behaves identical to the current default with the excetion that no
deprecation warning will be printed and the last is going to throw
an error for each unhandled rejection, just as regular exceptions do.
It is possible to intercept those with the `uncaughtException` hook
as with all other exceptions as well.
This PR has no influence on the existing `unhandledRejection` hook.
If that is used, it will continue to function as before.
PR-URL: https://github.com/nodejs/node/pull/26599
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Matheus Marchini <mat@mmarchini.me>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: Сковорода Никита Андреевич <chalkerx@gmail.com>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
- Rename `internalTickCallback` to `processTicksAndRejections`, make
sure it does not get called if it's not set in C++.
- Rename `emitPromiseRejectionWarnings` to `processPromiseRejections`
since it also emit events that are not warnings.
- Sets `SetPromiseRejectCallback` in the `Environment` constructor
to make sure it only gets called once per-isolate, and make
sure it does not get called if it's not set in C++.
- Wrap promise rejection callback initialization into
`listenForRejections()`.
- Add comments.
PR-URL: https://github.com/nodejs/node/pull/25200
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
- Wrap access to tickInfo fields in functions
- Rename `kHasScheduled` to `kHasTickScheduled` and
`kHasPromiseRejections` to `kHasRejectionToWarn` for clarity - note
the latter will be set to false if the rejection does not lead to
a warning so the previous description is not accurate.
- Set `kHasRejectionToWarn` in JS land of relying on C++ to use
an implict contract (return value of the promise rejection handler)
to set it, as the decision is made entirely in JS land.
- Destructure promise reject event constants.
PR-URL: https://github.com/nodejs/node/pull/25200
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
This patch:
- Moves the process.nextTick and promise setup C++ code into
node_task_queue.cc which is exposed as
`internalBinding('task_queue')`
- Makes `lib/internal/process/promises.js` and
`lib/internal/process/next_tick.js` as side-effect-free
as possible
- Removes the bootstrapper object being passed into
`bootstrap/node.js`, let `next_tick.js` and `promises.js`
load whatever they need from `internalBinding('task_queue')`
instead.
- Rename `process._tickCallback` to `runNextTicks` internally
for clarity but still expose it as `process._tickCallback`.
PR-URL: https://github.com/nodejs/node/pull/25163
Refs: https://github.com/nodejs/node/issues/24961
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
internalBinding is used so often that it should just automatically be
available for usage in internals.
PR-URL: https://github.com/nodejs/node/pull/23025
Refs: https://github.com/nodejs/node/commit/2a9eb31
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
This adds the `multipleResolves` event to track promises that resolve
more than once or that reject after resolving.
It is important to expose this to the user to make sure the
application runs as expected. Without such warnings it would be very
hard to debug these situations.
PR-URL: https://github.com/nodejs/node/pull/22218
Fixes: https://github.com/nodejs/promises-debugging/issues/8
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
This adds a rule that forbids the use of native Error constructors in
the `lib` directory. This is to encourage use of the `internal/errors`
mechanism. The rule is disabled for errors that are not created with
the `internal/errors` module but are still assigned an error code.
PR-URL: https://github.com/nodejs/node/pull/19373
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
Remove the unnecessary microTasksTickObject for scheduling microtasks
and instead use TickInfo to keep track of whether promise rejections
exist that need to be emitted. Consequently allow the microtasks to
execute on average fewer times, in more predictable manner than
previously.
Simplify unhandled & handled rejection tracking to do more in C++ to
avoid needing to expose additional info in JS.
When new unhandledRejections are emitted within an unhandledRejection
handler, allow the event loop to proceed first instead. This means
that if the end-user code handles all promise rejections on nextTick,
rejections within unhandledRejection now won't spiral into an infinite
loop.
PR-URL: https://github.com/nodejs/node/pull/18207
Fixes: https://github.com/nodejs/node/issues/17913
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
The variable deprecationWarned currently looks a little misplaced. It is
used in emitWarning but declared after it. This commit suggest moving
the var to the beginning of the function.
PR-URL: https://github.com/nodejs/node/pull/14769
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Alexey Orlenko <eaglexrlnk@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
The unhandled promise rejection warning uses a template literal and
prints the reason a promise was rejected. If rejecting with a symbol,
the symbol failed to convert to a string and the process crashed. Now,
symbols are casted to strings and the process does not crash.
Fixes: https://github.com/nodejs/node/issues/11637
PR-URL: https://github.com/nodejs/node/pull/11640
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Assigns a static identifier code to all runtime and documentation
only deprecations. The identifier code is included in the emitted
DeprecationWarning.
Also adds a deprecations.md to the API docs to provide a central
location where deprecation codes can be referenced and explained.
PR-URL: https://github.com/nodejs/node/pull/10116
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: Michal Zasso <targos@protonmail.com>
Reviewed-By: Fedor Indutny <fedor.indutny@gmail.com>
Give better stack traces for `PromiseRejectionHandledWarning`
and `UnhandledPromiseRejectionWarning`s.
For `PromiseRejectionHandledWarning`, when it is likely that there
is an `Error` object generated, it is created early to provide a
proper stack trace.
For `UnhandledPromiseRejectionWarning`, the stack trace of the
underlying error object is used, if possible.
Fixes: https://github.com/nodejs/node/issues/9523
PR-URL: https://github.com/nodejs/node/pull/9525
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
This commit avoids re-creating a new immediate queue object every
time the immediate queue is processed. Additionally, a few functions
are tweaked to make them inlineable.
These changes give ~6-7% boost in setImmediate() performance in the
existing setImmediate() benchmarks.
PR-URL: https://github.com/nodejs/node/pull/8655
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ilkka Myller <ilkka.myller@nodefield.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
PR-URL: https://github.com/nodejs/node/pull/8620
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jackson Tian <shvyo1987@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ilkka Myller <ilkka.myller@nodefield.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Log unhandled promise rejections with a guid and emit
a process warning. When rejection is eventually handled,
emit a secondary warning.
PR-URL: https://github.com/nodejs/node/pull/8217
Reviewed-By: Chris Dickinson <christopher.s.dickinson@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
The message argument for `assert.fail()` is the third argument, not the
first. Correct minor misuse in internal module.
PR-URL: https://github.com/nodejs/node/pull/6211
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Evan Lucas <evanlucas@me.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
