2 Commits

Author	SHA1	Message	Date
legendecas	062f8e3730	perf_hooks: web performance timeline compliance ... All API introduced in this PR are compliant with web [performance-timeline](https://w3c.github.io/performance-timeline) spec. "performance-timeline" is listed as supported web spec in the doc https://nodejs.org/docs/latest/api/perf_hooks.html#perf_hooks_performance_measurement_apis. Changes summary: 1. Add new supported wpt test subsets: user-timing and performance-timeline. 2. Add support for `Performance.getEntries`, `Performance.getEntriesByName` and `Performance.getEntriesByType` to synchronously fetch buffered performance entries. This means the user should invoke `Performance.clearMarks` and `Performance.clearMeasures` to clear buffered entries to prevent from those entries been kept alive forever. 3. Add support (again after https://github.com/nodejs/node/pull/37136) for `buffered` flags for `PerformanceObserver`. 3. Fixes `PerformanceMark` and `PerformanceMeasure` wpt compliance issues. 4. Only user-created performance entries will be buffered globally. This behavior should be compliant with https://w3c.github.io/timing-entrytypes-registry/#registry. With the new ability to fetch user-created performance entries synchronously, the issues raised in https://github.com/nodejs/diagnostics/issues/464#issuecomment-861920116 could also be fixed. PR-URL: https://github.com/nodejs/node/pull/39297 Reviewed-By: James M Snell <jasnell@gmail.com>	2021-07-25 23:43:31 +08:00
Joyee Cheung	a75d4e2724	perf_hooks: refactor perf_hooks for snapshot building ... - Move Performance and InternalPerformance to a new lib/internal/perf/performance.js - Move now() getMilestoneTimestamp() into lib/internal/perf/utils.js - Rename lib/internal/perf/perf.js to lib/internal/perf/performance_entry.js - Refresh time origin at startup (this means the time origins could differ between snapshot building time and snapshot creation time) PR-URL: https://github.com/nodejs/node/pull/38971 Refs: https://github.com/nodejs/node/issues/35711 Reviewed-By: James M Snell <jasnell@gmail.com>	2021-06-28 16:20:12 +08:00