| // Copyright 2016 ~ 2018 AlexStocks(https://github.com/AlexStocks). |
| // All rights reserved. Use of this source code is |
| // governed by Apache License 2.0. |
| // |
| // refers to github.com/jonhoo/drwmutex |
| package gxsync |
| |
| import ( |
| "fmt" |
| "io/ioutil" |
| "os" |
| "strconv" |
| "strings" |
| ) |
| |
| func map_cpus() (cpus map[uint64]int) { |
| cpus = make(map[uint64]int) |
| |
| cpuinfo, err := ioutil.ReadFile("/proc/cpuinfo") |
| if err != nil { |
| return |
| } |
| |
| var pnum int |
| var apic uint64 |
| lines := strings.Split(string(cpuinfo), "\n") |
| for i, line := range lines { |
| if len(line) == 0 && i != 0 { |
| cpus[apic] = pnum |
| pnum = 0 |
| apic = 0 |
| continue |
| } |
| |
| fields := strings.Fields(line) |
| |
| switch fields[0] { |
| case "processor": |
| pnum, err = strconv.Atoi(fields[2]) |
| case "apicid": |
| apic, err = strconv.ParseUint(fields[2], 10, 64) |
| } |
| |
| if err != nil { |
| fmt.Fprintln(os.Stderr, err.Error()) |
| return |
| } |
| } |
| return |
| } |
