66 lines
2.6 KiB
JavaScript
66 lines
2.6 KiB
JavaScript
// META: script=performanceobservers.js
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async_test(function (t) {
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var callbackCount = 0;
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var observer = new PerformanceObserver(
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t.step_func(function (entryList, obs) {
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callbackCount++;
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if (callbackCount === 1) {
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checkEntries(entryList.getEntries(), [
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{entryType: "measure", name: "measure1"},
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]);
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observer.observe({entryTypes: ["mark"]});
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self.performance.mark("mark2");
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self.performance.measure("measure2");
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return;
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}
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if (callbackCount === 2) {
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checkEntries(entryList.getEntries(), [
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{entryType: "mark", name: "mark2"},
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]);
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self.performance.mark("mark-before-change-observe-state-to-measure");
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self.performance.measure("measure-before-change-observe-state-to-measure");
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observer.observe({entryTypes: ["measure"]});
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self.performance.mark("mark3");
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self.performance.measure("measure3");
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return;
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}
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if (callbackCount === 3) {
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checkEntries(entryList.getEntries(), [
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{entryType: "measure", name: "measure3"},
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{entryType: "mark", name: "mark-before-change-observe-state-to-measure"},
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]);
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self.performance.mark("mark-before-change-observe-state-to-both");
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self.performance.measure("measure-before-change-observe-state-to-both");
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observer.observe({entryTypes: ["mark", "measure"]});
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self.performance.mark("mark4");
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self.performance.measure("measure4");
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return;
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}
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if (callbackCount === 4) {
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checkEntries(entryList.getEntries(), [
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{entryType: "measure", name: "measure-before-change-observe-state-to-both"},
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{entryType: "measure", name: "measure4"},
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{entryType: "mark", name: "mark4"},
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]);
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self.performance.mark("mark-before-disconnect");
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self.performance.measure("measure-before-disconnect");
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observer.disconnect();
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self.performance.mark("mark-after-disconnect");
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self.performance.measure("measure-after-disconnect");
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t.done();
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return;
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}
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assert_unreached("The callback must not be invoked after disconnecting");
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})
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);
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observer.observe({entryTypes: ["measure"]});
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self.performance.mark("mark1");
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self.performance.measure("measure1");
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}, "PerformanceObserver modifications inside callback should update filtering and not clear buffer");
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