worker: use copy of process.env #26544

addaleax · 2019-03-09T12:54:19Z

Instead of sharing the OS-backed store for all process.env instances,
create a copy of process.env for every worker that is created.

The copies do not interact. Native-addons do not see modifications to
process.env from Worker threads, but child processes started from
Workers do default to the Worker’s copy of process.env.

This makes Workers behave like child processes as far as process.env
is concerned, and an option corresponding to the child_process
module’s env option is added to the constructor.

Fixes: #24947

/cc @nodejs/workers

Checklist

make -j4 test (UNIX), or vcbuild test (Windows) passes
tests and/or benchmarks are included
documentation is changed or added
commit message follows commit guidelines

nodejs-github-bot · 2019-03-09T12:54:21Z

@addaleax build started: https://ci.nodejs.org/blue/organizations/jenkins/node-test-pull-request-lite-pipeline/detail/node-test-pull-request-lite-pipeline/2836/pipeline

lib/internal/worker.js

doc/api/worker_threads.md

BridgeAR

LG with the comments addressed.

lib/internal/main/worker_thread.js

addaleax · 2019-03-10T10:46:25Z

@ZYSzys @vsemozhetbyt @BridgeAR Your comments should be addressed, PTAL

doc/api/worker_threads.md

vsemozhetbyt

Docs LGTM.

BridgeAR · 2019-03-10T13:06:16Z

CI https://ci.nodejs.org/job/node-test-pull-request/21390/

ZYSzys

LGTM

BTW, don't we need to fix the lint ?

addaleax · 2019-03-10T22:08:11Z

@ZYSzys Thanks, fixed the linter :)

CI: https://ci.nodejs.org/job/node-test-pull-request/21411/

ZYSzys

Still LGTM

addaleax · 2019-03-12T12:13:24Z

I’ve updated this to address some test failures, but it’s still not complete because we check environment variables before we actually receive the startup message, and the whole pre-execution setup has become kind of icky to deal with recently…

addaleax · 2019-03-12T23:37:17Z

Okay, I think I have everything fixed now (including having spent quite a bit of time on debugging until it turned out that object spread doesn’t work with Proxies before V8 7.4 🙁).

CI: https://ci.nodejs.org/job/node-test-pull-request/21485/

@benjamingr @jasnell @BridgeAR (and maybe also @joyeecheung, given the kind of code it touches) The new changes are in 493022133d217ca6df5662c0cc5b542bc8d03f9f...9a4e61f5d33142d83c7d8c176cb1978de0101ad0 can you take another look?

addaleax · 2019-03-13T00:05:41Z

@Trott I can’t make much of the test failures with --worker … they don’t happen locally for me, but it looks like they might be due to some kind of issue with common.PORT that’s specific to the CI setup?

Trott · 2019-03-13T05:42:28Z

@Trott I can’t make much of the test failures with --worker … they don’t happen locally for me, but it looks like they might be due to some kind of issue with common.PORT that’s specific to the CI setup?

Doesn't fail locally for me either. @nodejs/build Is there something unusual about the custom-suites-freestyle job that might provide a hint here?

lib/internal/worker.js

src/node_credentials.cc

lib/internal/main/worker_thread.js

addaleax · 2019-03-13T09:41:31Z

@joyeecheung I think I’ll try the key-value-store based solution again. That should resolve your concerns, and if you want to review it, great ;)

Abstract the `process.env` backing mechanism in C++ to allow different kinds of backing stores for `process.env` for different Environments.

Allow a generic string-based backing store, with no significance to the remainder of the process, as a store for `process.env`.

Instead of sharing the OS-backed store for all `process.env` instances, create a copy of `process.env` for every worker that is created. The copies do not interact. Native-addons do not see modifications to `process.env` from Worker threads, but child processes started from Workers do default to the Worker’s copy of `process.env`. This makes Workers behave like child processes as far as `process.env` is concerned, and an option corresponding to the `child_process` module’s `env` option is added to the constructor. Fixes: nodejs#24947

nodejs-github-bot · 2019-03-30T20:28:22Z

CI: https://ci.nodejs.org/job/node-test-pull-request/22043/

addaleax · 2019-03-30T21:33:36Z

Landed in e4e2b0c...9fbf0c6

Abstract the `process.env` backing mechanism in C++ to allow different kinds of backing stores for `process.env` for different Environments. PR-URL: #26544 Fixes: #24947 Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com> Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>

Allow a generic string-based backing store, with no significance to the remainder of the process, as a store for `process.env`. PR-URL: #26544 Fixes: #24947 Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com> Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>

Instead of sharing the OS-backed store for all `process.env` instances, create a copy of `process.env` for every worker that is created. The copies do not interact. Native-addons do not see modifications to `process.env` from Worker threads, but child processes started from Workers do default to the Worker’s copy of `process.env`. This makes Workers behave like child processes as far as `process.env` is concerned, and an option corresponding to the `child_process` module’s `env` option is added to the constructor. Fixes: #24947 PR-URL: #26544 Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com> Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>

Abstract the `process.env` backing mechanism in C++ to allow different kinds of backing stores for `process.env` for different Environments. PR-URL: #26544 Fixes: #24947 Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com> Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>

Allow a generic string-based backing store, with no significance to the remainder of the process, as a store for `process.env`. PR-URL: #26544 Fixes: #24947 Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com> Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>

Instead of sharing the OS-backed store for all `process.env` instances, create a copy of `process.env` for every worker that is created. The copies do not interact. Native-addons do not see modifications to `process.env` from Worker threads, but child processes started from Workers do default to the Worker’s copy of `process.env`. This makes Workers behave like child processes as far as `process.env` is concerned, and an option corresponding to the `child_process` module’s `env` option is added to the constructor. Fixes: #24947 PR-URL: #26544 Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com> Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>

Abstract the `process.env` backing mechanism in C++ to allow different kinds of backing stores for `process.env` for different Environments. PR-URL: #26544 Fixes: #24947 Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com> Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Signed-off-by: Beth Griggs <Bethany.Griggs@uk.ibm.com>

Allow a generic string-based backing store, with no significance to the remainder of the process, as a store for `process.env`. PR-URL: #26544 Fixes: #24947 Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com> Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Signed-off-by: Beth Griggs <Bethany.Griggs@uk.ibm.com>

Instead of sharing the OS-backed store for all `process.env` instances, create a copy of `process.env` for every worker that is created. The copies do not interact. Native-addons do not see modifications to `process.env` from Worker threads, but child processes started from Workers do default to the Worker’s copy of `process.env`. This makes Workers behave like child processes as far as `process.env` is concerned, and an option corresponding to the `child_process` module’s `env` option is added to the constructor. Fixes: #24947 PR-URL: #26544 Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com> Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Signed-off-by: Beth Griggs <Bethany.Griggs@uk.ibm.com>

Abstract the `process.env` backing mechanism in C++ to allow different kinds of backing stores for `process.env` for different Environments. PR-URL: #26544 Fixes: #24947 Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com> Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Signed-off-by: Beth Griggs <Bethany.Griggs@uk.ibm.com>

Allow a generic string-based backing store, with no significance to the remainder of the process, as a store for `process.env`. PR-URL: #26544 Fixes: #24947 Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com> Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Signed-off-by: Beth Griggs <Bethany.Griggs@uk.ibm.com>

Instead of sharing the OS-backed store for all `process.env` instances, create a copy of `process.env` for every worker that is created. The copies do not interact. Native-addons do not see modifications to `process.env` from Worker threads, but child processes started from Workers do default to the Worker’s copy of `process.env`. This makes Workers behave like child processes as far as `process.env` is concerned, and an option corresponding to the `child_process` module’s `env` option is added to the constructor. Fixes: #24947 PR-URL: #26544 Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com> Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Signed-off-by: Beth Griggs <Bethany.Griggs@uk.ibm.com>

Notable changes: - worker: use copy of process.env (Anna Henningsen) [#26544](#26544) - src: - implement generic backend for process.env (Anna Henningsen) [#26544](#26544) - allow per-Environment set of env vars (Anna Henningsen) [#26544](#26544)

Notable changes: - worker: use copy of process.env (Anna Henningsen) [#26544](#26544) PR-URL: #27163

Notable changes: - child_process: doc deprecate ChildProcess.\_channel (cjihrig) [#26982](#26982) - deps: update nghttp2 to 1.37.0 (gengjiawen) [#26990](#26990) - dns: - make dns.promises enumerable (cjihrig) [#26592](#26592) - remove dns.promises experimental warning (cjihrig) [#26592](#26592) - stream: make Symbol.asyncIterator support stable (Matteo Collina) [#26989](#26989) - worker: use copy of process.env (Anna Henningsen) [#26544](#26544) PR-URL: #27163

Notable changes: - child_process: doc deprecate ChildProcess.\_channel (cjihrig) [#26982](#26982) - deps: update nghttp2 to 1.37.0 (gengjiawen) [#26990](#26990) - dns: - make dns.promises enumerable (cjihrig) [#26592](#26592) - remove dns.promises experimental warning (cjihrig) [#26592](#26592) - fs: remove experimental warning for fs.promises (Anna Henningsen) [#26581] (#26581) - stream: make Symbol.asyncIterator support stable (Matteo Collina) [#26989](#26989) - worker: use copy of process.env (Anna Henningsen) [#26544](#26544) PR-URL: #27163

addaleax added the worker Issues and PRs related to Worker support. label Mar 9, 2019

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addaleax added 3 commits March 30, 2019 21:08

src: allow per-Environment set of env vars

127693b

Abstract the `process.env` backing mechanism in C++ to allow different kinds of backing stores for `process.env` for different Environments.

src: implement generic backend for process.env

400aa06

Allow a generic string-based backing store, with no significance to the remainder of the process, as a store for `process.env`.

addaleax force-pushed the worker-env branch from 721b0d8 to 838799b Compare March 30, 2019 20:22

addaleax closed this Mar 30, 2019

addaleax deleted the worker-env branch March 30, 2019 21:33

joyeecheung mentioned this pull request Apr 1, 2019

src: port coverage serialization to C++ #26874

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4 tasks

chjj added a commit to chjj/bthreads that referenced this pull request Apr 1, 2019

worker: implement SHARE_ENV. see nodejs/node#26544.

66f91af

BethGriggs mentioned this pull request Apr 9, 2019

v11.14.0 proposal #27163

Merged

BethGriggs added a commit that referenced this pull request Apr 10, 2019

2019-04-10, Version 11.14.0 (Current)

369e566

Notable changes: - worker: use copy of process.env (Anna Henningsen) [#26544](#26544) PR-URL: #27163

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