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>
77 lines
3.5 KiB
HTML
77 lines
3.5 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8" />
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<title>functionality test of window.performance.clearMeasures</title>
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<link rel="author" title="Intel" href="http://www.intel.com/" />
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<link rel="help" href="http://www.w3.org/TR/user-timing/#extensions-performance-interface"/>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/common/performance-timeline-utils.js"></script>
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<script src="resources/webperftestharness.js"></script>
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<script src="resources/webperftestharnessextension.js"></script>
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<script>
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setup({ explicit_done: true });
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function onload_test()
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{
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const context = new PerformanceContext(window.performance);
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const entrylist_checker = new performance_entrylist_checker('measure');
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const measure_names = measures.map(function(x) {return x[0];});
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mark_names.forEach(function(name) {
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context.mark(name);
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});
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measures.forEach(context.initialMeasures, context);
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for (let i = 0; i < measures.length; ++i)
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{
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context.clearMeasures(measures[i][0]);
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const retained_entries = context.getEntriesByType('measure');
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const non_retained_entries = context.getEntriesByName(measures[i][0], 'measure');
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entrylist_checker.entrylist_check(retained_entries, measures.length - i - 1, measure_names,
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'First loop: checking entries after removing "' + measures[i][0] + '". ');
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test_equals(non_retained_entries.length, 0,
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'First loop: measure "' + measures[i][0] + '" should not exist anymore after we cleared it.');
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}
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measures.forEach(context.initialMeasures, context);
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context.clearMeasures();
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test_equals(context.getEntriesByType('measure').length, 0, 'No measures should exist after we clear all (after first loop).');
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// Following cases test clear existed measure name that is tied twice.
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measures.forEach(context.initialMeasures, context);
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mark_names.forEach(function(name) {
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context.mark(name);
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});
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measures.forEach(context.initialMeasures, context);
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for (let i = 0; i < measures.length; ++i)
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{
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context.clearMeasures(measures[i][0]);
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const retained_entries = context.getEntriesByType('measure');
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const non_retained_entries = context.getEntriesByName(measures[i][0], 'measure');
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entrylist_checker.entrylist_check(retained_entries, (measures.length - i - 1) * 2, measure_names,
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'Second loop: checking entries after removing "' + measures[i][0] + '". ');
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test_equals(non_retained_entries.length, 0,
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'Second loop: measure "' + measures[i][0] +'" should not exist anymore after we cleared it.');
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}
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// Following cases test clear functionality when measure names are tied twice.
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measures.forEach(context.initialMeasures, context);
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measures.forEach(context.initialMeasures, context);
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const entry_number_before_useless_clear = context.getEntriesByType('measure').length;
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context.clearMeasures('NonExist');
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const entry_number_after_useless_clear = context.getEntriesByType('measure').length;
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test_equals(entry_number_before_useless_clear, entry_number_after_useless_clear, 'Nothing should happen if we clear a non-exist measure');
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context.clearMeasures();
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test_equals(context.getEntriesByType('measure').length, 0, 'No measures should exist when we clear all (after second loop).');
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done();
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}
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</script>
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</head>
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<body onload=onload_test()>
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<h1>Description</h1>
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<p>This test validates functionality of the interface window.performance.clearMeasures.</p>
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<div id="log"></div>
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</body>
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</html>
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