feat: add pprof

plugin/debug/pkg/internal/report/testdata/sample/sample.go

@@ -0,0 +1,55 @@
+//  Copyright 2017 Google Inc. All Rights Reserved.
+//
+//  Licensed under the Apache License, Version 2.0 (the "License");
+//  you may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//  limitations under the License.
+
+// sample program that is used to produce some of the files in
+// pprof/internal/report/testdata.
+package main
+
+import (
+	"flag"
+	"fmt"
+	"log"
+	"math"
+	"os"
+	"runtime/pprof"
+)
+
+var cpuProfile = flag.String("cpuprofile", "", "where to write cpu profile")
+
+func main() {
+	flag.Parse()
+	f, err := os.Create(*cpuProfile)
+	if err != nil {
+		log.Fatal("could not create CPU profile: ", err)
+	}
+	if err := pprof.StartCPUProfile(f); err != nil {
+		log.Fatal("could not start CPU profile: ", err)
+	}
+	defer pprof.StopCPUProfile()
+	busyLoop()
+}
+
+func busyLoop() {
+	m := make(map[int]int)
+	for i := 0; i < 1000000; i++ {
+		m[i] = i + 10
+	}
+	var sum float64
+	for i := 0; i < 100; i++ {
+		for _, v := range m {
+			sum += math.Abs(float64(v))
+		}
+	}
+	fmt.Println("Sum", sum)
+}