// license that can be found in the LICENSE file.

package sysinfo_test

import (
	. "internal/sysinfo"
	"testing"
)

func TestCPUName(t *testing.T) {
	t.Logf("CPUName: %s", CPUName())
	t.Logf("osCPUInfoName: %s", XosCPUInfoName())

// Copyright 2023 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 sysinfo

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build !(darwin || freebsd || linux || netbsd || openbsd)

package sysinfo

func osCPUInfoName() string {
	return ""

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build darwin || freebsd || netbsd || openbsd

package sysinfo

import "syscall"

func osCPUInfoName() string {
	cpu, _ := syscall.Sysctl("machdep.cpu.brand_string")
	return cpu

package sysinfo

import (
	"internal/cpu"
	"sync"
)

var CPUName = sync.OnceValue(func() string {
	if name := cpu.Name(); name != "" {
		return name
	}

	if name := osCPUInfoName(); name != "" {
		return name
	}

	return ""

	if err != nil {
		return err
	}
	defer f.Close()

	_, err = io.ReadFull(f, buf)
	if err != nil && err != io.ErrUnexpectedEOF {
		return err
	}

	return nil
}

func osCPUInfoName() string {
	modelName := ""
	cpuMHz := ""

	// The 512-byte buffer is enough to hold the contents of CPU0
	buf := make([]byte, 512)
	err := readLinuxProcCPUInfo(buf)
	if err != nil {
		return ""
	}