go pprof_rusage 源码
golang pprof_rusage 代码
文件路径：/src/runtime/pprof/pprof_rusage.go
// Copyright 2019 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.
//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
package pprof
import (
"fmt"
"io"
"runtime"
"syscall"
)
// Adds MaxRSS to platforms that are supported.
func addMaxRSS(w io.Writer) {
var rssToBytes uintptr
switch runtime.GOOS {
case "aix", "android", "dragonfly", "freebsd", "linux", "netbsd", "openbsd":
rssToBytes = 1024
case "darwin", "ios":
rssToBytes = 1
case "illumos", "solaris":
rssToBytes = uintptr(syscall.Getpagesize())
default:
panic("unsupported OS")
}
var rusage syscall.Rusage
syscall.Getrusage(syscall.RUSAGE_SELF, &rusage)
fmt.Fprintf(w, "# MaxRSS = %d\n", uintptr(rusage.Maxrss)*rssToBytes)
}
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