go memprof 源码
golang memprof 代码
文件路径：/src/runtime/testdata/testprog/memprof.go
// Copyright 2016 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
import (
"bytes"
"fmt"
"os"
"runtime"
"runtime/pprof"
)
func init() {
register("MemProf", MemProf)
}
var memProfBuf bytes.Buffer
var memProfStr string
func MemProf() {
// Force heap sampling for determinism.
runtime.MemProfileRate = 1
for i := 0; i < 10; i++ {
fmt.Fprintf(&memProfBuf, "%*d\n", i, i)
}
memProfStr = memProfBuf.String()
runtime.GC()
f, err := os.CreateTemp("", "memprof")
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(2)
}
if err := pprof.WriteHeapProfile(f); err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(2)
}
name := f.Name()
if err := f.Close(); err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(2)
}
fmt.Println(name)
}
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