fix: Record cached dyld images async #7269
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Semver Impact of This PR🟢 Patch (bug fixes) 📋 Changelog PreviewThis is how your changes will appear in the changelog. This PR will not appear in the changelog. 🤖 This preview updates automatically when you update the PR. |
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itaybre
reviewed
Jan 23, 2026
| add_dyld_image(mh); | ||
| } | ||
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| void dyld_tracker_start(void) { |
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Maybe this should have sentry's prefix
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@noahsmartin, I didn't check the code yet, as this is still a draft. Please be aware that they also need the loaded binary image in the UIViewControllerSwizzling, as pointed out here #4618 (comment). If the proposal respects this, then excellent. |
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Performance metrics 🚀
|
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| b5c1b24 | 1217.94 ms | 1248.76 ms | 30.82 ms |
| 83bf9af | 1213.30 ms | 1234.18 ms | 20.89 ms |
| c424b6a | 1220.38 ms | 1248.18 ms | 27.80 ms |
| b206854 | 1228.68 ms | 1250.76 ms | 22.08 ms |
| 7e93d85 | 1205.28 ms | 1243.71 ms | 38.44 ms |
| 3b01aaf | 1194.98 ms | 1210.36 ms | 15.38 ms |
| 79e2bb8 | 1216.37 ms | 1242.42 ms | 26.05 ms |
| 50e7b3e | 1221.54 ms | 1250.81 ms | 29.27 ms |
| a7d7fb6 | 1209.53 ms | 1235.91 ms | 26.38 ms |
| 2e5230b | 1207.41 ms | 1240.41 ms | 33.00 ms |
App size
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| b5c1b24 | 24.14 KiB | 1.06 MiB | 1.04 MiB |
| 83bf9af | 24.14 KiB | 1.04 MiB | 1.02 MiB |
| c424b6a | 24.14 KiB | 1.06 MiB | 1.04 MiB |
| b206854 | 24.14 KiB | 1.07 MiB | 1.04 MiB |
| 7e93d85 | 24.14 KiB | 1.06 MiB | 1.04 MiB |
| 3b01aaf | 24.14 KiB | 1.06 MiB | 1.04 MiB |
| 79e2bb8 | 24.14 KiB | 1.04 MiB | 1.02 MiB |
| 50e7b3e | 24.14 KiB | 1.04 MiB | 1.02 MiB |
| a7d7fb6 | 24.14 KiB | 1.06 MiB | 1.04 MiB |
| 2e5230b | 24.14 KiB | 1.04 MiB | 1.02 MiB |
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This is a POC for how I think we should solve #4618
It fixes an existing race condition and moves the image handler to a background thread. Synchronization is now done safely with atomics so the crash handler can read from the added images without risk of race conditions (which existed before).
#skip-changelog