Use HighResTimeStamp #51511
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Use HighResTimeStamp #51511
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Summary: # Changelog: [Internal] There are multiple changes: 1. `PerformanceTracer` class, `TraceEvent` struct are moved to `tracing` namespace. These are parts of the Tracing subsystems of the jsinspector, this should bring more clarity and make things more explicit. 2. Added `Timing.h` class which defines conversion logic from `HighResTimeStamp` to absolute units that are expected by CDP. 3. `PerformanceTracer` will receive timestamps for Performance Web API entries in `HighResTimeStamp`. Also, we will explicilty define a Tracking Clock time origin that will be epoch of the `steady_clock`. This aligns with the approach in Chromium and saves us from aligning custom DOMHighResTimeStamps that can be specified in performance.mark / performance.measure calls: these should not extend the timeline window. I've confirmed that this is the current behavior in Chromium. Differential Revision: D75185467
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This pull request was exported from Phabricator. Differential Revision: D75185467 |
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Summary:
Changelog: [Internal]
There are multiple changes:
PerformanceTracerclass,TraceEventstruct are moved totracingnamespace. These are parts of the Tracing subsystems of the jsinspector, this should bring more clarity and make things more explicit.Timing.hclass which defines conversion logic fromHighResTimeStampto absolute units that are expected by CDP.PerformanceTracerwill receive timestamps for Performance Web API entries inHighResTimeStamp.Also, we will explicilty define a Tracking Clock time origin that will be epoch of the
steady_clock. This aligns with the approach in Chromium and saves us from aligning custom DOMHighResTimeStamps that can be specified in performance.mark / performance.measure calls: these should not extend the timeline window. I've confirmed that this is the current behavior in Chromium.Differential Revision: D75185467