[Turbopack] add active_counter to keep tasks active

[sokra]

What?

Add an active counter which keeps tasks active as long it's positive.

Closes PACK-3725

[sokra]

• [Turbopack] use new backend by default #72434
• [Turbopack] improve task optimization #74837
• [Turbopack] connect children in a batch when task is about to finish #74773
• [Turbopack] add active_counter to keep tasks active #74772 👈 (View in Graphite)
• [Turbopack] improve task aggregation update #74771
• [Turbopack] add tracing to task execution #74770
• [Turbopack] add count method to storage #74830
• canary

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[ijjk]

Stats from current PR

Default Build

General

	vercel/next.js canary	vercel/next.js sokra/active-counter-2	Change
buildDuration	16.7s	15s	N/A
buildDurationCached	14.2s	11.8s	N/A
nodeModulesSize	417 MB	417 MB	N/A
nextStartRea..uration (ms)	422ms	422ms	✓

Client Bundles (main, webpack)

	vercel/next.js canary	vercel/next.js sokra/active-counter-2	Change
5306-HASH.js gzip	53.5 kB	53.4 kB	N/A
8276.HASH.js gzip	169 B	168 B	N/A
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Legacy Client Bundles (polyfills)

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Overall change	39.4 kB	39.4 kB	✓

Client Pages

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Client Build Manifests

	vercel/next.js canary	vercel/next.js sokra/active-counter-2	Change
_buildManifest.js gzip	749 B	747 B	N/A
Overall change	0 B	0 B	✓

Rendered Page Sizes

	vercel/next.js canary	vercel/next.js sokra/active-counter-2	Change
index.html gzip	524 B	523 B	N/A
link.html gzip	539 B	538 B	N/A
withRouter.html gzip	520 B	520 B	✓
Overall change	520 B	520 B	✓

Edge SSR bundle Size

	vercel/next.js canary	vercel/next.js sokra/active-counter-2	Change
edge-ssr.js gzip	129 kB	129 kB	N/A
page.js gzip	207 kB	207 kB	N/A
Overall change	0 B	0 B	✓

Middleware size

	vercel/next.js canary	vercel/next.js sokra/active-counter-2	Change
middleware-b..fest.js gzip	668 B	668 B	✓
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build cache

	vercel/next.js canary	vercel/next.js sokra/active-counter-2	Change
0.pack gzip	2.09 MB	2.09 MB	N/A
index.pack gzip	75.7 kB	75.2 kB	N/A
Overall change	0 B	0 B	✓

Diff details

Diff for main-HASH.js

Diff too large to display

Commit: 207c7fc

[mischnic]

Why is it sometimes
get!(task, Activeness).is_some_and(|a| a.active_counter > 0)
and it other cases just
!task.has_key(&CachedDataItemKey::Activeness {})
Should it always check the counter?

[sokra]

Merge activity

• Jan 14, 10:39 AM EST: A user merged this pull request with Graphite.