src,lib: make ^C print a JS stack trace #29207

legendecas · 2019-08-19T17:20:15Z

If terminating the process with ctrl-c / SIGINT, prints a JS stack trace leading up to the currently executing code.

The feature would be enabled under option --trace-sigint.

Conditions of no stacktrace on sigint:

has (an) active sigint listener(s);
main thread is idle (i.e. uv polling), a message instead of stacktrace would be printed.

Related: #24937

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

lib/internal/main/run_main_module.js

mscdex · 2019-08-19T17:53:32Z

Maybe we should only print a stack trace if stdin is a TTY (especially if it's meant to only happen when pressing ctrl-c)?

lib/internal/main/run_main_module.js

src/node_watchdog.cc

bnoordhuis

Left some comments but nice work!

src/node_watchdog.cc

addaleax

report: is the subsystem for the node-report feature, i.e. node --experimental-report … this touches a related topic, but I think it might be confusing to name it that way

src/node_watchdog.h

src/node_watchdog.cc

lib/internal/main/run_main_module.js

legendecas · 2019-08-24T13:32:20Z

report: is the subsystem for the node-report feature, i.e. node --experimental-report … this touches a related topic, but I think it might be confusing to name it that way

Yes, this work doesn't touch report specifically in codebase. Yet I don't find a more proper subsystem here https://github.com/nodejs/core-validate-commit/blob/master/lib/rules/subsystem.js . Since both src and lib are touched in this work, neither of those one might be appropriate IMO.

addaleax · 2019-08-24T13:33:28Z

@legendecas You can also use src,lib: .... 🙂 Honestly, I don’t have a better idea than that either.

lib/internal/bootstrap/pre_execution.js

legendecas · 2019-08-24T17:08:10Z

I think this PR is out of WIP, ready to be reviewed thoroughly :)

src/node_watchdog.h

nodejs-github-bot · 2019-08-25T14:54:14Z

CI: https://ci.nodejs.org/job/node-test-pull-request/25228/

addaleax · 2019-08-25T14:54:58Z

CITGM: https://ci.nodejs.org/view/Node.js-citgm/job/citgm-smoker/1980/

addaleax · 2019-08-25T15:04:11Z

@legendecas Looks like there are still issues with the postmortem tests…

legendecas · 2019-08-25T16:45:35Z

@legendecas Looks like there are still issues with the postmortem tests…

I'll try to fix it :P

lib/internal/bootstrap/pre_execution.js

lib/internal/watchdog.js

Concerns appear to have been addressed. Unresponsive to pings. Dismissing.

Fishrock123 · 2020-01-12T18:34:38Z

I will attempt to take a look but I am in transit today. If I don’t see it by mid Monday just go ahead.

Fishrock123 · 2020-01-14T19:50:14Z

I don't have any substantive opinions for this.

legendecas · 2020-01-17T02:56:17Z

Since there are no objections anymore and multiple approves, I'd tag this as author-ready.

If terminating the process with ctrl-c / SIGINT, prints a JS stacktrace leading up to the currently executing code. The feature would be enabled under option --trace-sigint. Conditions of no stacktrace on sigint: - has (an) active sigint listener(s); - main thread is idle (i.e. uv polling), a message instead of stacktrace would be printed.

legendecas · 2020-01-25T15:18:31Z

Rebased to resolve conflicts.

nodejs-github-bot · 2020-01-26T12:04:58Z

CI: https://ci.nodejs.org/job/node-test-pull-request/28681/

If terminating the process with ctrl-c / SIGINT, prints a JS stacktrace leading up to the currently executing code. The feature would be enabled under option `--trace-sigint`. Conditions of no stacktrace on sigint: - has (an) active sigint listener(s); - main thread is idle (i.e. uv polling), a message instead of stacktrace would be printed. PR-URL: #29207 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Reviewed-By: Christopher Hiller <boneskull@boneskull.com> Reviewed-By: Rich Trott <rtrott@gmail.com>

legendecas · 2020-01-28T05:53:59Z

Landed with 7b7e7bd 🎉

ruyadorno · 2020-01-28T14:51:36Z

/cc @nodejs/tooling this landed 🎉 yay! we might want to talk about it in the next tooling WG meeting

If terminating the process with ctrl-c / SIGINT, prints a JS stacktrace leading up to the currently executing code. The feature would be enabled under option `--trace-sigint`. Conditions of no stacktrace on sigint: - has (an) active sigint listener(s); - main thread is idle (i.e. uv polling), a message instead of stacktrace would be printed. PR-URL: #29207 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Reviewed-By: Christopher Hiller <boneskull@boneskull.com> Reviewed-By: Rich Trott <rtrott@gmail.com>

If terminating the process with ctrl-c / SIGINT, prints a JS stacktrace leading up to the currently executing code. The feature would be enabled under option `--trace-sigint`. Conditions of no stacktrace on sigint: - has (an) active sigint listener(s); - main thread is idle (i.e. uv polling), a message instead of stacktrace would be printed. PR-URL: nodejs#29207 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Reviewed-By: Christopher Hiller <boneskull@boneskull.com> Reviewed-By: Rich Trott <rtrott@gmail.com>

If terminating the process with ctrl-c / SIGINT, prints a JS stacktrace leading up to the currently executing code. The feature would be enabled under option `--trace-sigint`. Conditions of no stacktrace on sigint: - has (an) active sigint listener(s); - main thread is idle (i.e. uv polling), a message instead of stacktrace would be printed. PR-URL: #29207 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Reviewed-By: Christopher Hiller <boneskull@boneskull.com> Reviewed-By: Rich Trott <rtrott@gmail.com>

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bnoordhuis mentioned this pull request Jan 29, 2020

cli: make ^C print a JS stack trace #24937

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codebytere mentioned this pull request Feb 17, 2020

v13.9.0 proposal #31837

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This was referenced Apr 18, 2020

test: fix flaky test-trace-sigint-on-idle #31645

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src: add missing namespace using statements in node_watchdog.h #32117

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v12.17.0 release proposal #33197

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src,lib: make ^C print a JS stack trace #29207

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