Since we were removing the hasRef() method before exposing the
MessagePort object, the only way of knowing if the handle was keeping
the event loop active was to parse the string returned by
util.inspect(port), which is inconvenient and inconsistent with most of
the other async resources. So this change stops removing hasRef() from
the MessagePort prototype. The reason why this is also being documented
is that while reporting active resources, async_hooks returns the same
MessagePort object as the one that is accessible by users.
Refs: https://github.com/nodejs/node/issues/42091#issuecomment-1104793189
Signed-off-by: Darshan Sen <raisinten@gmail.com>
PR-URL: https://github.com/nodejs/node/pull/42849
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Add `ev.ports` for spec compliancy.
Since we only emit the raw `data` value, and only create the
`MessageEvent` instance if there are EventTarget-style listeners,
we store the ports list temporarily on the MessagePort object itself,
so that we can look it up when we need to create the event object.
Fixes: https://github.com/nodejs/node/issues/37358
PR-URL: https://github.com/nodejs/node/pull/37538
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
We set the `kStartedReading` flag from `_read()` for Worker stdio,
and then `ref()` the port.
However, the `.on('end')` handler is also attached when `._read()`
is not called, e.g. when `process.stdin` inside a Worker is prematurely
ended because stdin was not enabled by the parent thread.
In that case, we should not call `.unref()` for stdin if we did not
also call `.ref()` for it before.
Fixes: https://github.com/nodejs/node/issues/28144
PR-URL: https://github.com/nodejs/node/pull/28153
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
In combination with Atomics, this makes it possible to implement
generic synchronous functionality, e.g. `importScript()`, in Workers
purely by communicating with other threads.
This is a continuation of https://github.com/nodejs/node/pull/26686,
where a preference for a solution was voiced that allowed reading
individual messages, rather than emitting all messages through events.
PR-URL: https://github.com/nodejs/node/pull/27294
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
`debuglog()` depends on `process.pid` and `process.env.NODE_DEBUG`,
so it needs to be called lazily in top scopes of internal modules
that may be loaded before these run time states are allowed to
be accessed. This patch makes its implementation lazy by default,
the process states are only accessed when the returned debug
function is called for the first time.
PR-URL: https://github.com/nodejs/node/pull/27281
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
This patch splits the implementation of util.debuglog into a
separate file and explicitly initialize it during pre-execution
since the initialization depends on environment variables.
Also delays the call to `debuglog` in modules that are loaded during
bootstrap to make sure we only access the environment variable
during pre-execution.
PR-URL: https://github.com/nodejs/node/pull/26468
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Instead of passing the payload for Workers directly to `.onmessage`,
perform something more similar to what the browser API provides,
namely create an event object with a `.data` property.
This does not make `MessagePort` implement the `EventTarget` API, nor
does it implement the full `MessageEvent` API, but it would make
such extensions non-breaking changes if we desire them at
some point in the future.
(This would be a breaking change if Workers were not experimental.
Currently, this method is also undocumented and only exists with
the idea of enabling some degree of Web compatibility.)
PR-URL: https://github.com/nodejs/node/pull/26082
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Denys Otrishko <shishugi@gmail.com>
Remove setting of a 'close' event handler on MessagePort through the use
of an `.onclose` property. We don't use this convention anywhere else in
our codebase for 'close' events, this feature is undocumented, and we
don't test it.
PR-URL: https://github.com/nodejs/node/pull/25904
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Yuta Hiroto <hello@hiroppy.me>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>
Do not print debug messages that indicate that a stdio stream
has drained; because `util.debuglog()` uses `console.log`, which
in turn uses stdio streams, this would otherwise have lead to an
endless loop.
PR-URL: https://github.com/nodejs/node/pull/25312
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
- Move `setupProcessStdio` which contains write access to
the process object into `bootstrap/node.js`
- Move `MessagePort`, `MessageChannel`, `ReadableWorkerStdio`,
and `WritableWorkerStdio` into `internal/worker/io.js`
- Move more worker-specific bootstrap code into
`internal/process/worker_thread_only` from `setupChild`
in `internal/worker.js`, and move the `process._fatalException`
overwrite into `bootstrap/node.js` for clarity.
PR-URL: https://github.com/nodejs/node/pull/25199
Reviewed-By: James M Snell <jasnell@gmail.com>
Antoine du Hamel