feat: Standalone app start tracing by philipphofmann · Pull Request #7660 · getsentry/sentry-cocoa

philipphofmann · 2026-03-10T09:15:55Z

📜 Description

Send app start data as a standalone transaction instead of attaching it to the first UIViewController transaction.

The measurement is passed directly via SentryTracerConfiguration, avoiding the global static and its race conditions.

We intentionally don't add public user-facing docs for this because this is more of a proof of concept for #6883 that we still need to iterate on before we want a larger audience to try it. The Sentry product doesn't handle these standalone app start transactions yet.

💡 Motivation and Context

Fixes #6883

💚 How did you test it?

Unit tests
End-to-end regression test: Ran the iOS-Swift sample app on a clean simulator with enableStandaloneAppStartTracing = false on this branch and compared against main. Both produce identical transaction structure (same operations, same hierarchy: Cold Start grouping span with 5 child phase spans under the ui.load transaction). No regression.

Regression test run 2 — 2026-03-12T10:42Z

Method

Added a unique regression-test scope tag to identify each run
Erased the simulator between runs for clean cold starts
Built and launched iOS-Swift on each branch, waited ~15s, stopped the app
Compared transactions via Sentry MCP (search_events + get_trace_details)

Results

Property	Feature Branch	Main Branch
Tag	`regression-test-feature-branch-2`	`regression-test-main-branch-2`
Trace ID	`2279393e2bdd4126a29efeda00dd946b`	`7a1bb60029c842fea30b0e289e507b81`
Total spans	27 ¹	26
App start spans	6 (`Cold Start` + 5 phases)	6 (`Cold Start` + 5 phases)
Transaction op	`ui.load`	`ui.load`

¹ The extra span is an unrelated profileLaunch file.write, not an app start span.

Full span comparison (sorted by duration desc)

Span Description	Operation	Feature Branch	Main Branch
ErrorsViewController	`ui.load`	1101ms	1051ms
ErrorsViewController initial display	`ui.load.initial_display`	945ms	831ms
ErrorsViewController full display	`ui.load.full_display`	945ms	831ms
Cold Start	`app.start.cold`	945ms	831ms
Pre Runtime Init	`app.start.cold`	465ms	478ms
POST http://localhost:8969/stream	`http.client`	159ms	227ms
Application Init	`app.start.cold`	177ms	139ms
UIKit Init	`app.start.cold`	161ms	92ms
Initial Frame Render	`app.start.cold`	141ms	120ms
loadView	`ui.load`	3ms	5ms
Runtime Init to Pre Main Initializers	`app.start.cold`	2ms	2ms
QmU-DD-itF-view-M6c-EX-0C6.nib	`file.read`	0.7ms	0.5ms
data.data (533 bytes)	`file.write`	0.5ms	0.2ms
Info.plist	`file.read`	0.3ms	0.4ms
Info-8.0+.plist	`file.read`	0.3ms	0.3ms
Sim.Touch.plist	`file.read`	0.3ms	0.3ms
Sim.Pencil.plist	`file.read`	0.2ms	0.3ms
viewDidAppear	`ui.load`	0.3ms	0.2ms
layoutSubViews	`ui.load`	0.2ms	0.2ms
viewDidLoad	`ui.load`	0.2ms	0.2ms
layoutSubViews	`ui.load`	0.2ms	0.2ms
viewWillLayoutSubviews	`ui.load`	0.02ms	0.03ms
viewWillLayoutSubviews	`ui.load`	0.02ms	0.02ms
viewWillAppear	`ui.load`	0.02ms	0.02ms
viewDidLayoutSubviews	`ui.load`	0.02ms	0.02ms
viewDidLayoutSubviews	`ui.load`	0.02ms	0.02ms

Sentry links

Regression test run 1 — 2026-03-12T09:20Z

Method

Added a unique regression-test scope tag to identify each run
Erased the simulator between runs for clean cold starts
Built and launched iOS-Swift on each branch, waited ~15s, stopped the app
Compared transactions via Sentry MCP (search_events + get_trace_details)

Results

Property	Feature Branch	Main Branch
Tag	`regression-test-feature-branch`	`regression-test-main-branch`
Trace ID	`3ff1c4e3c3754ab18ece26d7e0cf722a`	`3edc353029d34c9292f5ea85df4851ac`
Total spans	26	26
App start spans	6 (`Cold Start` + 5 phases)	6 (`Cold Start` + 5 phases)
Transaction op	`ui.load`	`ui.load`

Full span comparison (sorted by duration desc)

Span Description	Operation	Feature Branch	Main Branch
ErrorsViewController	`ui.load`	1152ms	1091ms
ErrorsViewController initial display	`ui.load.initial_display`	967ms	887ms
ErrorsViewController full display	`ui.load.full_display`	967ms	920ms
Cold Start	`app.start.cold`	967ms	887ms
Pre Runtime Init	`app.start.cold`	468ms	531ms
POST http://localhost:8969/stream	`http.client`	189ms	206ms
UIKit Init	`app.start.cold`	188ms	102ms
Initial Frame Render	`app.start.cold`	171ms	113ms
Application Init	`app.start.cold`	137ms	138ms
loadView	`ui.load`	4ms	5ms
Runtime Init to Pre Main Initializers	`app.start.cold`	2ms	2ms
QmU-DD-itF-view-M6c-EX-0C6.nib	`file.read`	0.5ms	0.6ms
Info.plist	`file.read`	0.4ms	0.4ms
Info-8.0+.plist	`file.read`	0.3ms	0.3ms
data.data (533 bytes)	`file.write`	0.3ms	0.4ms
Sim.Pencil.plist	`file.read`	0.3ms	0.2ms
layoutSubViews	`ui.load`	0.3ms	0.3ms
Sim.Touch.plist	`file.read`	0.3ms	0.2ms
viewDidAppear	`ui.load`	0.2ms	0.2ms
viewDidLoad	`ui.load`	0.2ms	0.2ms
layoutSubViews	`ui.load`	0.07ms	0.08ms
viewWillLayoutSubviews	`ui.load`	0.03ms	0.03ms
viewWillAppear	`ui.load`	0.02ms	0.02ms
viewWillLayoutSubviews	`ui.load`	0.02ms	0.02ms
viewDidLayoutSubviews	`ui.load`	0.02ms	0.02ms
viewDidLayoutSubviews	`ui.load`	0.02ms	0.02ms

Sentry links

Reproducible prompt

Run an end-to-end regression test for app start tracing. Compare the current branch
(with enableStandaloneAppStartTracing = false) against main to verify no regression
in the UIViewController app start transaction.

Steps:
1. In SentrySDKWrapper.swift, set enableStandaloneAppStartTracing = false and add a
   unique scope tag: scope.setTag(value: "regression-test-feature-branch", key: "regression-test")
2. Erase the iOS simulator (xcrun simctl shutdown <ID> && xcrun simctl erase <ID>),
   boot it, build and run iOS-Swift scheme, wait 15 seconds, stop the app
3. Revert sample app changes, stash, checkout main
4. In SentrySDKWrapper.swift on main, add scope tag:
   scope.setTag(value: "regression-test-main-branch", key: "regression-test")
5. Erase the simulator again, boot, build and run iOS-Swift, wait 15 seconds, stop
6. Revert main changes, checkout back to feature branch, pop stash
7. Use Sentry MCP search_events to find transactions with tag regression-test for
   each branch in project 5428557 (sentry-sdks org)
8. Use get_trace_details and search_events to get all spans for both traces
9. Compare: span count, span operations, span descriptions, hierarchy structure.
   Durations will differ (expected). Everything else should match.
10. Update the PR description "How did you test it?" section with the comparison.

📝 Checklist

You have to check all boxes before merging:

I added tests to verify the changes.
No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
I updated the docs if needed.
I updated the wizard if needed.
Review from the native team if needed.
No breaking change or entry added to the changelog.
No breaking change for hybrid SDKs or communicated to hybrid SDKs.

github-actions · 2026-03-10T09:16:20Z

Semver Impact of This PR

🟡 Minor (new features)

📋 Changelog Preview

This is how your changes will appear in the changelog.
Entries from this PR are highlighted with a left border (blockquote style).

New Features ✨

Standalone app start tracing by philipphofmann in #7660

Internal Changes 🔧

Samples

Restructure samples and revert to sample-specific target names by philprime in #7659
Restructure iOS-Swift6 sample by philprime in #7656

Other

(deps) Update clang-format version by github-actions in #7675

_{🤖 This preview updates automatically when you update the PR.}

github-actions · 2026-03-10T09:16:25Z

	Messages
📖	Do not forget to update Sentry-docs with your feature once the pull request gets approved.

Generated by 🚫 dangerJS against 00e0d76

codecov · 2026-03-10T09:40:48Z

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.356%. Comparing base (8d9e501) to head (00e0d76).
⚠️ Report is 14 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@              Coverage Diff              @@
##              main     #7660       +/-   ##
=============================================
+ Coverage   85.314%   85.356%   +0.042%     
=============================================
  Files          485       486        +1     
  Lines        28838     28901       +63     
  Branches     12521     12556       +35     
=============================================
+ Hits         24603     24669       +66     
+ Misses        4188      4183        -5     
- Partials        47        49        +2

Files with missing lines	Coverage Δ
Sources/Sentry/SentryAppStartMeasurementProvider.m	`92.307% <100.000%> (+0.415%)`	⬆️
Sources/Sentry/SentryBuildAppStartSpans.m	`100.000% <100.000%> (ø)`
Sources/Sentry/SentryTracer.m	`99.026% <100.000%> (+0.768%)`	⬆️
...es/Swift/Helper/SentryEnabledFeaturesBuilder.swift	`100.000% <100.000%> (ø)`
...s/AppStartTracking/AppStartReportingStrategy.swift	`100.000% <100.000%> (ø)`
...tions/AppStartTracking/SentryAppStartTracker.swift	`93.209% <100.000%> (+0.128%)`	⬆️
Sources/Swift/SentryDependencyContainer.swift	`97.196% <100.000%> (+0.013%)`	⬆️
Sources/Swift/SentryExperimentalOptions.swift	`83.333% <100.000%> (+3.333%)`	⬆️

... and 5 files with indirect coverage changes

Continue to review full report in Codecov by Sentry.

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Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 8d9e501...00e0d76. Read the comment docs.

github-actions · 2026-03-10T10:24:41Z

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1214.31 ms	1243.60 ms	29.30 ms
Size	24.14 KiB	1.13 MiB	1.10 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
`b9e1a29`	1216.41 ms	1255.80 ms	39.39 ms
`d68691e`	1221.48 ms	1248.13 ms	26.65 ms
`c424b6a`	1220.38 ms	1248.18 ms	27.80 ms
`5b1e2a1`	1217.63 ms	1245.49 ms	27.86 ms
`c58a1c5`	1229.49 ms	1251.19 ms	21.70 ms
`2e5230b`	1207.41 ms	1240.41 ms	33.00 ms
`b0c71c8`	1206.29 ms	1242.13 ms	35.84 ms
`3461f50`	1228.08 ms	1263.37 ms	35.29 ms
`7e30a5e`	1214.57 ms	1247.78 ms	33.21 ms
`1b18a2d`	1210.42 ms	1243.47 ms	33.05 ms

App size

Revision	Plain	With Sentry	Diff
`b9e1a29`	24.14 KiB	1.11 MiB	1.09 MiB
`d68691e`	24.14 KiB	1.12 MiB	1.09 MiB
`c424b6a`	24.14 KiB	1.06 MiB	1.04 MiB
`5b1e2a1`	24.14 KiB	1.11 MiB	1.09 MiB
`c58a1c5`	24.14 KiB	1.11 MiB	1.09 MiB
`2e5230b`	24.14 KiB	1.04 MiB	1.02 MiB
`b0c71c8`	24.14 KiB	1.08 MiB	1.06 MiB
`3461f50`	24.14 KiB	1.11 MiB	1.09 MiB
`7e30a5e`	24.14 KiB	1.10 MiB	1.08 MiB
`1b18a2d`	24.14 KiB	1.10 MiB	1.07 MiB

Previous results on branch: feat/standalone-app-start-tracing

Startup times

Revision	Plain	With Sentry	Diff
`92fb0d9`	1198.41 ms	1215.74 ms	17.33 ms
`c1f77f9`	1220.31 ms	1242.54 ms	22.23 ms
`8b737d8`	1222.43 ms	1252.96 ms	30.53 ms
`edbdb50`	1217.06 ms	1249.92 ms	32.86 ms
`0d2ca60`	1229.17 ms	1261.09 ms	31.91 ms
`9175efb`	1219.83 ms	1239.50 ms	19.67 ms

App size

Revision	Plain	With Sentry	Diff
`92fb0d9`	24.14 KiB	1.13 MiB	1.10 MiB
`c1f77f9`	24.14 KiB	1.13 MiB	1.10 MiB
`8b737d8`	24.14 KiB	1.12 MiB	1.10 MiB
`edbdb50`	24.14 KiB	1.12 MiB	1.10 MiB
`0d2ca60`	24.14 KiB	1.12 MiB	1.10 MiB
`9175efb`	24.14 KiB	1.12 MiB	1.10 MiB

philipphofmann

Review for Claude Code.

Sources/Sentry/SentryBuildAppStartSpans.m

Sources/Sentry/SentryTracer.m

.../SentryTests/Integrations/Performance/AppStartTracking/AppStartMeasurementHandlerTests.swift

Sources/Sentry/include/SentryBuildAppStartSpans.h

sentry · 2026-03-10T11:25:23Z

Sentry Build Distribution

App	Version	Configuration
App	9.6.0 (1)	Release

sentry · 2026-03-10T11:25:55Z

Sentry Build Distribution

App	Version	Configuration
App	9.6.0 (1)	Release

sentry · 2026-03-10T11:51:51Z

Sentry Build Distribution

App Name	App ID	Version	Configuration	Install Page
SDK-Size	io.sentry.sample.SDK-Size	9.7.0 (1)	Release	Install Build

sentry · 2026-03-10T11:53:45Z

Sentry Build Distribution

App	Version	Configuration
App	9.6.0 (1)	Release

…vider Move the app start measurement retrieval logic from SentryTracer into a standalone SentryAppStartMeasurementProvider class to decouple it from the tracer and prepare for a future Swift rewrite. Agent transcript: https://claudescope.sentry.dev/share/-ySeYAQr0t_-TzVJYh7grS4nvSpo6f1NKAIEUc4__60

Call SentryAppStartMeasurementProvider.reset() directly from ClearTestState and the provider tests instead of routing through SentryTracer's forwarding method. Agent transcript: https://claudescope.sentry.dev/share/L1InLC1w4Xm6HgEp2bHk-sJ2wtr9fRfQ08BpwGE4JSs

Remove unused profilerReferenceID parameter, add header docs, and fix stale TSan suppression. Agent transcript: https://claudescope.sentry.dev/share/YCbJaiw4eo47tyRGdPdNfyWa3VZueptJtPoevH1S97A

Agent transcript: https://claudescope.sentry.dev/share/F7n3parCPAfcG8axuTkl_e5rqRhTpI6T0S_tdcKY0CA

Fix trailing closure ambiguity with DispatchWorkItem and remove non-existent profilerReferenceID parameter. Agent transcript: https://claudescope.sentry.dev/share/boilLz21_S-f8uu_dcXvext-dAi2MAY8xkbK2zEafW4

Add experimental option to send standalone app start transactions instead of attaching app start data to the first UIViewController transaction. Uses a strategy pattern via AppStartMeasurementHandler protocol. The standalone handler is currently a no-op placeholder; actual transaction logic will be added in a follow-up. Refs: #6883 Agent transcript: https://claudescope.sentry.dev/share/KZR39vRrsVDqgpm56ONILZFlu1u_gpBhAnK7QrpyOH0

Create a real tracer with app.start.cold/warm operation that reuses the existing tracer pipeline for span building, measurements, context, debug images, and profiling. - Add SentrySpanOperationAppStartCold/Warm constants - Relax getAppStartMeasurement to accept app start ops - Skip intermediate root span for standalone transactions - Enable option in iOS sample app for validation Refs: #6883 Agent transcript: https://claudescope.sentry.dev/share/UaCuhStnxjQCwKH46hOsPqgeHsckPh15A0Flqw8JOPc

Move the standalone app start detection from SentryBuildAppStartSpans to SentryTracer and pass it as a BOOL parameter. Use span operation constants instead of string literals. Agent transcript: https://claudescope.sentry.dev/share/QyuEyImC81GP83tCrqUbp939ejQ3-3y_0TcwnvcejsA

Deduplicate the app start operation check in SentryTracer into a single method reused in toTransaction and getAppStartMeasurement. Agent transcript: https://claudescope.sentry.dev/share/bffTUQ5TAcp6oTyLqR8SSSjLLG4pSUsZ8l7TB7qaq1s

Also verify the trace origin is auto.app_start to more precisely identify standalone app start transactions. Agent transcript: https://claudescope.sentry.dev/share/HhoCIcB8Nh0dEd16RtFdllS_ZIxK393KCEPaOUiPp5s

Add StandaloneAppStartTransactionHelper to centralize the logic for identifying standalone app start transactions next to the code that creates them. Agent transcript: https://claudescope.sentry.dev/share/th338Y1YxxM5471m3BNGV5Az6QKNTNQzAyhCyZ9MmuM

Agent transcript: https://claudescope.sentry.dev/share/xXkgR2dl97mE2PWt7NruvtllULuWG4AsRUqKNBWTwmY

Agent transcript: https://claudescope.sentry.dev/share/pdKSDSkCaothxFJDzOiGaAa5Xx0Y25-3FAXUPTQBrMk

Agent transcript: https://claudescope.sentry.dev/share/ybqp4mPXWwKgONVEqEjXEB2fOJpPadgxjoVveErVLJg

Avoids race conditions with global static by passing the measurement directly to the tracer. Agent transcript: https://claudescope.sentry.dev/share/5dFraoe7qfSofcTRtjfi59JzjPmHtWPyBK9YLzp61_g

Agent transcript: https://claudescope.sentry.dev/share/X8DACobiqDRtZfVbeaQw4zLHsDROh6I5nJeKDL5zUEs

… data

Agent transcript: https://claudescope.sentry.dev/share/C9BhqxF3zTINpiHqWP4NXyggeHdocpb2_Vr61uNyjWk

- Move public functions to top of SentryBuildAppStartSpans.m - Expand SentryTracer comment on race condition avoidance - Use string literals instead of constants in tests - Assert specific debug image properties in test - Add span tree examples to header doc comments Agent transcript: https://claudescope.sentry.dev/share/4RQyqJ6qxJ3uLrCpOW-w1LjUpmtGerVFCS6DIZgKRXE

The platform guards for app start cleanup in clearTestState were missing os(visionOS), causing appStartMeasurementRead to never reset between tests on visionOS. This made tests that depend on app start measurement data fail when run after other tests that consume the measurement. Agent transcript: https://claudescope.sentry.dev/share/XRVuiHsfZrr_PPrwGDvT9RkHPcp6AxGP1tIDaq2H4CU

Agent transcript: https://claudescope.sentry.dev/share/q8e4vEz2TdMPQVUddVouvkTqbmczr4sbno1eCaKYJUo

Reorder static helpers before public functions so forward declarations are unnecessary. Agent transcript: https://claudescope.sentry.dev/share/YxFRa6oUZjO-FbIdZ6tJm3NS3crlLEOkaJhSoyTlnnI

Group it with the other SENTRY_HAS_UIKIT methods at the bottom of the file. Agent transcript: https://claudescope.sentry.dev/share/l1p-jS5wvAvglbGGB7D_m6tnGYaagdHBQCTAddXclW0

- Protocol: AppStartMeasurementHandler → AppStartReportingStrategy - AttachAppStartMeasurementHandler → AttachToTransactionStrategy - SendStandaloneAppStartTransaction → StandaloneTransactionStrategy - Method: handle() → report() - Variable: measurementHandler → reportingStrategy

- Fix trailing slash typo in changelog entry - Restore enableUncaughtNSExceptionReporting in sample app - Make StandaloneAppStartTransactionHelper final - Add test for unknown app start type in StandaloneTransactionStrategy - Restore visionOS platform guard in measurement provider tests - Rename tests to follow test_when_should convention - Remove extra blank line in sentryBuildAppStartSpansInternal

Replace the class-level tearDown with per-test cleanup: - AttachToTransactionStrategy tests: reset app start measurement - StandaloneTransactionStrategy tests: reset current hub - Integration tests: full clearTestState via setUpIntegrationHub - Helper tests: no cleanup needed

- Rename tests to follow test_when_should naming convention - Fix assertion order: value first, expected second - Remove unnecessary force_unwrapping swiftlint disable

Verify the full path from SentryAppStartTracker through StandaloneTransactionStrategy captures a transaction with the correct name and operation, and does not set the global static.

Cover nil config measurement, nil measurement input, unknown start type, enhanced integration assertions, and default feature flag behavior. Agent transcript: https://claudescope.sentry.dev/share/DHthmP4l-WXLLOSec8mR7LkoGRxh5KdqGZSeF3UaXik

Remove enableStandaloneAppStartTracing from sample app since the feature isn't ready for general use yet. Restore visionOS in #endif comment to match the opening platform guard. Agent transcript: https://claudescope.sentry.dev/share/vz0QO06DfJpC3-St_cH3Br5qoqAuE2iHNNDFfK-M7uQ

philipphofmann added the ready-to-merge Use this label to trigger all PR workflows label Mar 10, 2026

philipphofmann commented Mar 10, 2026

View reviewed changes

philipphofmann mentioned this pull request Mar 10, 2026

feat: Send standalone app start transactions #6883

Open

Base automatically changed from ref/extract-app-start-measurement-provider to main March 11, 2026 10:44

philipphofmann added 18 commits March 11, 2026 12:04

ref: Clean up app start measurement provider API

ba85ba9

Remove unused profilerReferenceID parameter, add header docs, and fix stale TSan suppression. Agent transcript: https://claudescope.sentry.dev/share/YCbJaiw4eo47tyRGdPdNfyWa3VZueptJtPoevH1S97A

fix: Remove leftover profilerReferenceID in concurrency test

ec54453

Agent transcript: https://claudescope.sentry.dev/share/F7n3parCPAfcG8axuTkl_e5rqRhTpI6T0S_tdcKY0CA

fix: Fix compilation errors in app start measurement provider tests

4d7bfa8

Fix trailing closure ambiguity with DispatchWorkItem and remove non-existent profilerReferenceID parameter. Agent transcript: https://claudescope.sentry.dev/share/boilLz21_S-f8uu_dcXvext-dAi2MAY8xkbK2zEafW4

ref: Extract isStandaloneAppStartTransaction method

244ad48

Deduplicate the app start operation check in SentryTracer into a single method reused in toTransaction and getAppStartMeasurement. Agent transcript: https://claudescope.sentry.dev/share/bffTUQ5TAcp6oTyLqR8SSSjLLG4pSUsZ8l7TB7qaq1s

ref: Check origin in isStandaloneAppStartTransaction

6427ad5

Also verify the trace origin is auto.app_start to more precisely identify standalone app start transactions. Agent transcript: https://claudescope.sentry.dev/share/HhoCIcB8Nh0dEd16RtFdllS_ZIxK393KCEPaOUiPp5s

ref: Use SentrySpan protocol in app start spans

81c03f0

Agent transcript: https://claudescope.sentry.dev/share/xXkgR2dl97mE2PWt7NruvtllULuWG4AsRUqKNBWTwmY

fix linter

51dc82b

test: Add standalone app start span building tests

d4918cb

Agent transcript: https://claudescope.sentry.dev/share/pdKSDSkCaothxFJDzOiGaAa5Xx0Y25-3FAXUPTQBrMk

feat: Guard standalone app start transaction on SDK enabled

db3ef7e

Agent transcript: https://claudescope.sentry.dev/share/ybqp4mPXWwKgONVEqEjXEB2fOJpPadgxjoVveErVLJg

ref: Pass app start measurement via tracer configuration

8211d93

Avoids race conditions with global static by passing the measurement directly to the tracer. Agent transcript: https://claudescope.sentry.dev/share/5dFraoe7qfSofcTRtjfi59JzjPmHtWPyBK9YLzp61_g

test: Assert span names and operations in standalone test

89686ca

Agent transcript: https://claudescope.sentry.dev/share/X8DACobiqDRtZfVbeaQw4zLHsDROh6I5nJeKDL5zUEs

test: Improve standalone app start global measurement test

985fdd0

philipphofmann added 10 commits March 11, 2026 12:04

ref: Split sentryBuildAppStartSpans into two methods

ed652f5

test: Add integration tests for standalone app start

2799506

test: Add missing import for _SentryPrivate

6a7e677

test: Replace clearTestState with targeted cleanup

8ba3510

test: Add span validation for standalone app start

5106df6

fix: Fix flaky tests by restoring clearTestState and using serialized…

58d04f0

… data

feat: Track standalone app start tracing in enabled features

d11bf49

Agent transcript: https://claudescope.sentry.dev/share/C9BhqxF3zTINpiHqWP4NXyggeHdocpb2_Vr61uNyjWk

build: update public API after adding experimental option

027eef2

Agent transcript: https://claudescope.sentry.dev/share/q8e4vEz2TdMPQVUddVouvkTqbmczr4sbno1eCaKYJUo

philipphofmann force-pushed the feat/standalone-app-start-tracing branch from 5378661 to 027eef2 Compare March 11, 2026 11:10

philipphofmann added 9 commits March 12, 2026 10:25

Merge branch 'main' into feat/standalone-app-start-tracing

4740d03

changelog

98fbbed

ref: Remove forward declarations in SentryBuildAppStartSpans

8b3d6f2

Reorder static helpers before public functions so forward declarations are unnecessary. Agent transcript: https://claudescope.sentry.dev/share/YxFRa6oUZjO-FbIdZ6tJm3NS3crlLEOkaJhSoyTlnnI

ref: Move isStandaloneAppStartTransaction to UIKit section

4819275

Group it with the other SENTRY_HAS_UIKIT methods at the bottom of the file. Agent transcript: https://claudescope.sentry.dev/share/l1p-jS5wvAvglbGGB7D_m6tnGYaagdHBQCTAddXclW0

test: Fix test conventions from develop-docs review

973cc2f

- Rename tests to follow test_when_should naming convention - Fix assertion order: value first, expected second - Remove unnecessary force_unwrapping swiftlint disable

test: Add integration test for standalone app start tracing

3ac8825

Verify the full path from SentryAppStartTracker through StandaloneTransactionStrategy captures a transaction with the correct name and operation, and does not set the global static.

philipphofmann mentioned this pull request Mar 12, 2026

docs: Add teardown best practice to TEST.md #7677

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philipphofmann added 2 commits March 12, 2026 11:23

philipphofmann mentioned this pull request Mar 12, 2026

feat: Send standalone app start transactions getsentry/sentry-java#5046

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philipphofmann marked this pull request as ready for review March 12, 2026 10:56

philipphofmann requested review from itaybre, noahsmartin and philprime as code owners March 12, 2026 10:56

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Merge branch 'main' into feat/standalone-app-start-tracing

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