Function BenchmarkUpgrade

upgrader_test.go:505–550

(b *testing.B)

}

func BenchmarkUpgrade(b *testing.B) {
	for _, n := range []int{4, 400, 4000} {
		b.Run(fmt.Sprintf("n=%d", n), func(b *testing.B) {
			fds := newFds(nil, nil)
			for i := 0; i < n; i += 2 {
				r, w, err := os.Pipe()
				if err != nil {
					b.Fatal(err)
				}

				err = fds.AddFile(strconv.Itoa(n), r)
				if err != nil {
					b.Fatal(err)
				}
				r.Close()

				err = fds.AddFile(strconv.Itoa(n), w)
				if err != nil {
					b.Fatal(err)
				}
				w.Close()
			}

			b.ResetTimer()
			for i := 0; i < b.N; i++ {
				u, err := newUpgrader(stdEnv, Options{})
				if err != nil {
					b.Fatal("Can't create Upgrader:", err)
				}
				if err := u.Ready(); err != nil {
					b.Fatal("Can't call Ready:", err)
				}

				u.Fds = fds
				if err := u.Upgrade(); err != nil {
					b.Fatal(err)
				}
			}
			b.StopTimer()

			for _, f := range fds.used {
				f.Close()
			}
		})
	}
}