062f8e3730All 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>
26 lines
1 KiB
JavaScript
26 lines
1 KiB
JavaScript
test(function() {
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self.performance.mark("mark1");
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self.performance.mark("mark2");
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// test that two marks have been created
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var entries = self.performance.getEntriesByType("mark");
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assert_equals(entries.length, 2, "Two marks have been created for this test.");
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// clear existent mark
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self.performance.clearMarks("mark1");
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// test that "mark1" was cleared
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entries = self.performance.getEntriesByName("mark1");
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assert_equals(entries.length, 0,
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"After a call to self.performance.clearMarks(\"mark1\"), " +
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"window.performance.getEntriesByName(\"mark1\") returns an empty object.");
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// test that "mark2" still exists
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entries = self.performance.getEntriesByName("mark2");
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assert_equals(entries[0].name, "mark2",
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"After a call to self.performance.clearMarks(\"mark1\"), " +
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"window.performance.getEntriesByName(\"mark2\") returns an object containing the " +
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"\"mark2\" mark.");
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}, "Clearing an existent mark doesn't affect other existing marks");
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