feat(android): Parse memory and GC info from ANR thread dumps

[markushi]

📜 Description

Parses memory and GC metrics from ANRv2 thread dumps (ApplicationExitInfo traces) and enriches the Device context on ANR events.

New classes:

• ThreadDumpMemoryInfo — data holder for parsed memory/GC fields (bytes and milliseconds)
• ThreadDumpMemoryInfoParser — parses lines like Free memory 3107KB, Total GC time: 11.807ms using simple suffix-based parsing (counterpart to Android's PrettySize output)

The parsed memory info flows through ThreadDumpParser → ParseResult → AnrV2Hint → ApplicationExitInfoEventProcessor, which sets:

• device.freeMemory ← freeMemoryUntilOOMEBytes
• device.usableMemory ← freeMemoryBytes
• device.memorySize ← maxMemoryBytes

Resolves: #2801

💡 Motivation and Context

ANR thread dumps from ART contain memory and GC statistics that are currently ignored. This information is valuable for diagnosing memory pressure-related ANRs.

💚 How did you test it?

• Unit tests for ThreadDumpMemoryInfoParser (all size units, invalid input, time parsing, all fields, unrelated lines)
• Integration tests in ThreadDumpParserTest using real thread dump fixtures
• Negative test: garbage thread dump produces no memory info

📝 Checklist

• I added GH Issue ID & Linear ID
• 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.

🔮 Next steps

• Determine where to surface GC statistics (e.g. a dedicated "memory" context)

[github-actions]

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

Generated by 🚫 dangerJS against 089d25e

[sentry]

📲 Install Builds

Android

🔗 App Name	App ID	Version	Configuration
SDK Size	io.sentry.tests.size	8.41.0 (1)	release

⚙️ sentry-android Build Distribution Settings

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	316.67 ms	394.40 ms	77.73 ms
Size	0 B	0 B	0 B

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
8558cac	306.16 ms	355.24 ms	49.09 ms
8687935	332.52 ms	362.23 ms	29.71 ms
9054d65	330.94 ms	403.24 ms	72.30 ms
fc5ccaf	322.49 ms	405.25 ms	82.76 ms
8c1fb22	316.62 ms	352.78 ms	36.16 ms
d8912da	329.94 ms	389.68 ms	59.74 ms
d15471f	315.61 ms	360.22 ms	44.61 ms
b6702b0	395.86 ms	409.98 ms	14.12 ms
62b579c	318.48 ms	367.71 ms	49.24 ms
ed33deb	312.34 ms	369.71 ms	57.37 ms

App size

Revision	Plain	With Sentry	Diff
8558cac	0 B	0 B	0 B
8687935	1.58 MiB	2.19 MiB	619.17 KiB
9054d65	1.58 MiB	2.29 MiB	723.38 KiB
fc5ccaf	1.58 MiB	2.13 MiB	557.54 KiB
8c1fb22	0 B	0 B	0 B
d8912da	0 B	0 B	0 B
d15471f	1.58 MiB	2.13 MiB	559.54 KiB
b6702b0	1.58 MiB	2.12 MiB	551.79 KiB
62b579c	0 B	0 B	0 B
ed33deb	1.58 MiB	2.13 MiB	559.52 KiB

Previous results on branch: feat/anr-thread-dump-memory-info

Startup times

Revision	Plain	With Sentry	Diff
976a904	315.40 ms	352.60 ms	37.20 ms

App size

Revision	Plain	With Sentry	Diff
976a904	0 B	0 B	0 B

[markushi]

@sentry review