From ccd992355df7192993c666236047820244914598 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Tue, 16 Apr 2024 21:19:13 +0200 Subject: Adding upstream version 1.21.8. Signed-off-by: Daniel Baumann --- src/cmd/go/init_test.go | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 src/cmd/go/init_test.go (limited to 'src/cmd/go/init_test.go') diff --git a/src/cmd/go/init_test.go b/src/cmd/go/init_test.go new file mode 100644 index 0000000..f76425d --- /dev/null +++ b/src/cmd/go/init_test.go @@ -0,0 +1,41 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package main_test + +import ( + "internal/testenv" + "sync/atomic" + "testing" +) + +// BenchmarkExecGoEnv measures how long it takes for 'go env GOARCH' to run. +// Since 'go' is executed, remember to run 'go install cmd/go' before running +// the benchmark if any changes were done. +func BenchmarkExecGoEnv(b *testing.B) { + testenv.MustHaveExec(b) + gotool, err := testenv.GoTool() + if err != nil { + b.Fatal(err) + } + + // We collect extra metrics. + var n, userTime, systemTime int64 + + b.ResetTimer() + b.RunParallel(func(pb *testing.PB) { + for pb.Next() { + cmd := testenv.Command(b, gotool, "env", "GOARCH") + + if err := cmd.Run(); err != nil { + b.Fatal(err) + } + atomic.AddInt64(&n, 1) + atomic.AddInt64(&userTime, int64(cmd.ProcessState.UserTime())) + atomic.AddInt64(&systemTime, int64(cmd.ProcessState.SystemTime())) + } + }) + b.ReportMetric(float64(userTime)/float64(n), "user-ns/op") + b.ReportMetric(float64(systemTime)/float64(n), "sys-ns/op") +} -- cgit v1.2.3