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Simplify and optimize the computation of per-call-node line and address timings - #5770

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mstange merged 4 commits into
firefox-devtools:mainfrom
mstange:better-call-node-line-and-address-timings
Jan 27, 2026
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Simplify and optimize the computation of per-call-node line and address timings#5770
mstange merged 4 commits into
firefox-devtools:mainfrom
mstange:better-call-node-line-and-address-timings

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This PR makes it so that we don't allocate lots of one-element sets just to compute which line number to scroll to, when a call node is double-clicked.

@mstange
mstange requested a review from canovaJanuary 22, 2026 02:38
@mstangemstange self-assigned this Jan 22, 2026
We only use the total hits anyway, to compute which line to scroll to.
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codecovBot commented Jan 22, 2026

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Codecov Report

❌ Patch coverage is 96.66667% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.67%. Comparing base (1b72cf5) to head (800ffe0).
⚠️ Report is 6 commits behind head on main.

Files with missing linesPatch %Lines
src/profile-logic/address-timings.ts90.00%2 Missing ⚠️
src/profile-logic/line-timings.ts93.75%1 Missing ⚠️
Additional details and impacted files
@@ Coverage Diff @@## main #5770 +/- ##
==========================================
- Coverage 85.72% 85.67% -0.06% 
==========================================
Files 319 319 Lines 31249 31197 -52 Branches 8594 8585 -9 ==========================================
- Hits 26789 26728 -61 - Misses 4030 4039 +9 
Partials 430 430 

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@mstange
mstangeforce-pushed the better-call-node-line-and-address-timings branch from b753a70 to 6a0b464CompareJanuary 22, 2026 02:39
I didn't add any tests for the new function; I think it is sufficiently
covered by the existing tests for getNativeSymbolsForCallNode.
And the next commit will make the address / line timings code use it,
which will contribute some more test coverage.
@mstange
mstangeforce-pushed the better-call-node-line-and-address-timings branch from 6a0b464 to 5eaa05fCompareJanuary 22, 2026 02:41
…timings / address timings with the help of getCallNodeFramePerStack.
@mstange
mstangeforce-pushed the better-call-node-line-and-address-timings branch from 5eaa05f to 6ba8c8cCompareJanuary 22, 2026 03:17

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LGTM, thanks!

@mstange
mstange enabled auto-merge January 27, 2026 15:27
@mstange
mstange merged commit 81de1ee into firefox-devtools:mainJan 27, 2026
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@canovacanova mentioned this pull request Jan 27, 2026
canova added a commit that referenced this pull request Jan 27, 2026
Lots of exciting changes 🎉:
[arai-a] Put radio buttons into labels (#5738)
[DaniPopes] Update comment for "unique-string" (#5741)
[Karan Pradhan] Hide tooltip filter button in non-sticky tooltips and
add hideFilterButton tests (#5718)
[arai-a] Add a menu to copy the Marker Table as text (#5732)
[arai-a] Make the entire list item clickable for the "Full Range"
(#5742)
[Markus Stange] Move symbol table demangling out of SymbolStore into
SymbolProvider (#5746)
[Markus Stange] Remove SVG asset imports from profile-data.ts (#5747)
[arai-a] Do not apply sticky tooltip on double click (#5754)
[arai-a] Skip the ChartCanvas redraw on the Viewport's internal default
state usage (#5744)
[Markus Stange] Stop blindly extracting uint8array.buffer after calling
compress() (#5753)
[Markus Stange] In the assembly view state, refer to the current symbol
by index (#5755)
[Markus Stange] Fix "scroll to hotspot" functionality in the source view
+ assembly view (#5759)
[Markus Stange] Keep the colorField markerSchema field when processing
profiles in the gecko format (#5760)
[Markus Stange] Implement dark mode (#5740)
[Markus Stange] Fix light-mode colors (#5765)
[Markus Stange] Tweak dark mode colours. (#5767)
[Nazım Can Altınova] Enable some basic type-aware lints (#5775)
[Markus Stange] Allow seeing different assembly code for the same
function (#5349)
[fatadel] Refine tree view a11y (#5779)
[fatadel] Align double-click behavior of stack chart with flame graph
(#5782)
[Markus Stange] Split gz.ts properly into node and browser variants
(#5764)
[Markus Stange] Simplify and optimize the computation of per-call-node
line and address timings (#5770)
[Nazım Can Altınova] Move the dark mode toggle to devtools console
(#5783)
[Nazım Can Altınova] 🔃 Sync: l10n -> main (Jan 27, 2026) (#5785)
[Nazım Can Altınova] Improve Chrome importer marker payload logic
(#5717)
[Markus Stange] Add a Focus Self transform (#5774)
[Nazım Can Altınova] Enable the Turkish locale in production (#5786)
And huge thanks to our localizers 🎉 :
be: Mikalai Udodau
de: Ger
de: Michael Köhler
el: Jim Spentzos
en-CA: chutten
en-CA: Saurabh
en-GB: Ian Neal
en-GB: Saurabh
es-CL: ravmn
fy-NL, nl: Fjoerfoks
fr: Skywarp
fr: Théo Chevalier
fur: Fabio Tomat
fy-NL: Fjoerfoks
ia: Melo46
it: Francesco Lodolo [:flod]
nl: Fjoerfoks
nl: Mark Heijl
pt-BR: Marcelo Ghelman
ru: berry
ru: Valery Ledovskoy
sv-SE: Andreas Pettersson
tr: Grk
zh-CN: Olvcpr423
zh-CN: wxie
zh-TW: Pin-guang Chen
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@mstange@canova