feat(Unity): Updated ANR detection explainer - Single vs Multi Threaded #14834
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Bundle ReportChanges will decrease total bundle size by 1.19kB (-0.01%) ⬇️. This is within the configured threshold ✅ Detailed changes
ℹ️ *Bundle size includes cached data from a previous commit Affected Assets, Files, and Routes:view changes for bundle: sentry-docs-client-array-pushAssets Changed:
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coolguyzone
reviewed
Sep 10, 2025
| On platforms that do no support multithreading the ANR detection falls back to relying on the coroutine itself to report if the last time it executed exceeds the timeout. | ||
| ### Platforms with Multi-Threading Support | ||
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| On platforms that support multithreading, the ANR detection works in two parts: |
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| On platforms that support multithreading, the ANR detection works in two parts: | |
| On platforms that support multithreading, the ANR detection has two components: |
coolguyzone
reviewed
Sep 10, 2025
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| On platforms that support multithreading, the ANR detection works in two parts: | ||
| 1. A coroutine periodically resets a counter | ||
| 2. A background thread increments and monitors this counter. It reports an ANR event when the threshold defined on `options.AnrTimeout` is exceeded |
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| 2. A background thread increments and monitors this counter. It reports an ANR event when the threshold defined on `options.AnrTimeout` is exceeded | |
| 2. A background thread increments and monitors this counter, triggering an ANR event when the value exceeds the threshold defined in `options.AnrTimeout`. |
coolguyzone
reviewed
Sep 10, 2025
| ### Platforms without Multi-Threading Support - WebGL | ||
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| On platforms without multi-threading support like WebGL, the ANR detection uses a slightly different approach: | ||
| - A single coroutine using a `Stopwatch` to measure elapsed time |
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| - A single coroutine using a `Stopwatch` to measure elapsed time | |
| - A single coroutine uses a `Stopwatch` to measure elapsed time |
coolguyzone
reviewed
Sep 10, 2025
| - A single coroutine using a `Stopwatch` to measure elapsed time | ||
| - When the coroutine detects that more time has passed than the ANR timeout, it reports the ANR event | ||
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| The drawback here is that the ANR detection relies on the game recovering from the not-responding state to report the event. |
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| The drawback here is that the ANR detection relies on the game recovering from the not-responding state to report the event. | |
| The drawback here is that the ANR detection relies on the game recovering from the non-responsive state to report the event. |
| The ANR detection in the Unity SDK works differently depending on whether multithreading is available on the target platform: | ||
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| On platforms that do no support multithreading the ANR detection falls back to relying on the coroutine itself to report if the last time it executed exceeds the timeout. | ||
| ### Platforms with Multi-Threading Support |
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give an example of what this is.
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There is a difference in how the integration works based on whether the SDK can make use of multi threaded - or not.