src: improve thread safety of `TaskQueue` #57910

codebytere · 2025-04-17T12:47:23Z

Improve thread safety of TaskQueue by making locking of TaskQueue explicit and thus hopefully preventing a crash due to uv_async_send being called with nullptr.

codecov · 2025-04-17T13:40:02Z

Codecov Report

Attention: Patch coverage is 97.56098% with 2 lines in your changes missing coverage. Please review.

Project coverage is 90.26%. Comparing base (5077ea4) to head (d71a542).
Report is 425 commits behind head on main.

Files with missing lines	Patch %	Lines
src/node_platform.cc	97.53%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##             main   #57910    +/-   ##
========================================
  Coverage   90.25%   90.26%            
========================================
  Files         630      630            
  Lines      185691   186170   +479     
  Branches    36407    36480    +73     
========================================
+ Hits       167589   168039   +450     
+ Misses      10994    10975    -19     
- Partials     7108     7156    +48

Files with missing lines	Coverage Δ
src/node_platform.h	`80.00% <100.00%> (+5.00%)`	⬆️
src/node_platform.cc	`88.70% <97.53%> (+0.83%)`	⬆️

... and 65 files with indirect coverage changes

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src/node_platform.h

src/node_platform.cc

mcollina · 2025-04-18T07:39:42Z

@codebytere I wonder if this could also help with #54918.

bnoordhuis

LGTM with some suggestions.

src/node_platform.cc

mcollina

RSLGTM

nodejs-github-bot · 2025-04-19T13:54:06Z

CI: https://ci.nodejs.org/job/node-test-pull-request/66364/

lpinca · 2025-04-19T14:42:35Z

@codebytere I wonder if this could also help with #54918

I applied this patch and unfortunately it does not.

mcollina · 2025-04-19T15:00:27Z

Thanks for checking!

nodejs-github-bot · 2025-04-21T07:44:08Z

CI: https://ci.nodejs.org/job/node-test-pull-request/66399/

joyeecheung

LGTM (as in, my tiny head can't find potential issues out of the new locks), though I think it can use a bit more comments (I am fairly certain that the race can only happen at shutdown, the platform is initialized too early for any tasks to be posted during that process)

src/node_platform.cc

PR-URL: #57910 Reviewed-By: Ben Noordhuis <[email protected]> Reviewed-By: Matteo Collina <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Joyee Cheung <[email protected]>

nodejs/node#57910

* chore: bump node in DEPS to v22.16.0 * crypto: remove BoringSSL dh-primes addition nodejs/node#57023 * tools: enable linter in test/fixtures/test\-runner/output nodejs/node#57698 * src: improve thread safety of TaskQueue nodejs/node#57910 * buffer: define global v8::CFunction objects as const nodejs/node#57676 * src: disable abseil deadlock detection nodejs/node#57582 * zlib: fix pointer alignment nodejs/node#57727 * chore: fixup patch indices * src: set default config as node.config.json nodejs/node#57171 * src: update std::vector<v8::Local<T>> to use v8::LocalVector<T> nodejs/node#57578 * test: disable chmod tests failing in Docker nodejs/node#58326 --------- Co-authored-by: electron-roller[bot] <84116207+electron-roller[bot]@users.noreply.github.com> Co-authored-by: Shelley Vohr <[email protected]>

nodejs/node#57910

* chore: bump node in DEPS to v22.16.0 * crypto: remove BoringSSL dh-primes addition nodejs/node#57023 * tools: enable linter in test/fixtures/test\-runner/output nodejs/node#57698 * src: improve thread safety of TaskQueue nodejs/node#57910 * buffer: define global v8::CFunction objects as const nodejs/node#57676 * src: disable abseil deadlock detection nodejs/node#57582 * zlib: fix pointer alignment nodejs/node#57727 * chore: fixup patch indices * src: set default config as node.config.json nodejs/node#57171 * src: update std::vector<v8::Local<T>> to use v8::LocalVector<T> nodejs/node#57578 * test: disable chmod tests failing in Docker nodejs/node#58326 --------- Co-authored-by: electron-roller[bot] <84116207+electron-roller[bot]@users.noreply.github.com> Co-authored-by: Shelley Vohr <[email protected]>

marco-ippolito · 2025-06-05T09:17:16Z

This commit requires a manual backport to land on v20.x

nodejs/node#57910

codebytere requested review from bnoordhuis and joyeecheung April 17, 2025 12:47

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d71a542

codebytere force-pushed the mutex-flush-tasks branch from 78a514e to d71a542 Compare April 21, 2025 17:50

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2025-05-21, Version 22.16.0 'Jod' (LTS) #58388

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src: improve thread safety of TaskQueue

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VlkrS mentioned this pull request Jun 3, 2025

node 22.16.0 on OpenBSD: building a module with node-gyp spins in a tight loop #58569

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src: improve thread safety of TaskQueue

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nodejs/node#57910

AuntyEms mentioned this pull request Jun 8, 2025

### Notable Changes autofix-ci/action#28

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hhugo mentioned this pull request Jun 13, 2025

uv_async_send() inconsistency libuv/libuv#3622

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codebytere added a commit to electron/electron that referenced this pull request Jun 18, 2025

src: improve thread safety of TaskQueue

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nodejs/node#57910

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