mirror of
https://github.com/langhuihui/monibuca.git
synced 2025-12-24 13:48:04 +08:00
56 lines
1.4 KiB
Go
56 lines
1.4 KiB
Go
// Copyright 2017 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// sample program that is used to produce some of the files in
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// pprof/internal/report/testdata.
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package main
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import (
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"flag"
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"fmt"
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"log"
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"math"
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"os"
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"runtime/pprof"
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)
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var cpuProfile = flag.String("cpuprofile", "", "where to write cpu profile")
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func main() {
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flag.Parse()
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f, err := os.Create(*cpuProfile)
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if err != nil {
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log.Fatal("could not create CPU profile: ", err)
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}
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if err := pprof.StartCPUProfile(f); err != nil {
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log.Fatal("could not start CPU profile: ", err)
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}
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defer pprof.StopCPUProfile()
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busyLoop()
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}
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func busyLoop() {
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m := make(map[int]int)
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for i := 0; i < 1000000; i++ {
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m[i] = i + 10
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}
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var sum float64
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for i := 0; i < 100; i++ {
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for _, v := range m {
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sum += math.Abs(float64(v))
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}
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}
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fmt.Println("Sum", sum)
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}
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