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benchmark/perf_hooks/timerfied.js

@@ -0,0 +1,36 @@
+'use strict';
+
+const assert = require('assert');
+const common = require('../common.js');
+
+const {
+  PerformanceObserver,
+  performance,
+} = require('perf_hooks');
+
+function randomFn() {
+  return Math.random();
+}
+
+const bench = common.createBenchmark(main, {
+  n: [1e6],
+  observe: ['function'],
+});
+
+let _result;
+
+function main({ n, observe }) {
+  const obs = new PerformanceObserver(() => {
+    bench.end(n);
+  });
+  obs.observe({ entryTypes: [observe], buffered: true });
+
+  const timerfied = performance.timerify(randomFn);
+
+  bench.start();
+  for (let i = 0; i < n; i++)
+    _result = timerfied();
+
+  // Avoid V8 deadcode (elimination)
+  assert.ok(_result);
+}