154 lines
3.2 KiB
Go
154 lines
3.2 KiB
Go
// +build darwin
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package mem
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import (
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"os/exec"
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"strconv"
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"strings"
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"github.com/shirou/gopsutil/internal/common"
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)
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func getPageSize() (uint64, error) {
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out, err := exec.Command("pagesize").Output()
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if err != nil {
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return 0, err
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}
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o := strings.TrimSpace(string(out))
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p, err := strconv.ParseUint(o, 10, 64)
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if err != nil {
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return 0, err
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}
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return p, nil
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}
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// Runs vm_stat and returns Free and inactive pages
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func getVmStat(pagesize uint64, vms *VirtualMemoryStat) error {
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out, err := exec.Command("vm_stat").Output()
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if err != nil {
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return err
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}
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return parseVmStat(string(out), pagesize, vms)
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}
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func parseVmStat(out string, pagesize uint64, vms *VirtualMemoryStat) error {
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var err error
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lines := strings.Split(out, "\n")
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for _, line := range lines {
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fields := strings.Split(line, ":")
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if len(fields) < 2 {
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continue
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}
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key := strings.TrimSpace(fields[0])
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value := strings.Trim(fields[1], " .")
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switch key {
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case "Pages free":
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free, e := strconv.ParseUint(value, 10, 64)
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if e != nil {
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err = e
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}
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vms.Free = free * pagesize
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case "Pages inactive":
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inactive, e := strconv.ParseUint(value, 10, 64)
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if e != nil {
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err = e
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}
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vms.Cached += inactive * pagesize
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vms.Inactive = inactive * pagesize
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case "Pages active":
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active, e := strconv.ParseUint(value, 10, 64)
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if e != nil {
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err = e
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}
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vms.Active = active * pagesize
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case "Pages wired down":
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wired, e := strconv.ParseUint(value, 10, 64)
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if e != nil {
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err = e
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}
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vms.Wired = wired * pagesize
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case "Pages purgeable":
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purgeable, e := strconv.ParseUint(value, 10, 64)
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if e != nil {
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err = e
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}
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vms.Cached += purgeable * pagesize
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}
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}
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return err
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}
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// VirtualMemory returns VirtualmemoryStat.
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func VirtualMemory() (*VirtualMemoryStat, error) {
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ret := &VirtualMemoryStat{}
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p, err := getPageSize()
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if err != nil {
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return nil, err
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}
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t, err := common.DoSysctrl("hw.memsize")
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if err != nil {
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return nil, err
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}
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total, err := strconv.ParseUint(t[0], 10, 64)
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if err != nil {
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return nil, err
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}
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err = getVmStat(p, ret)
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if err != nil {
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return nil, err
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}
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ret.Available = ret.Free + ret.Cached
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ret.Total = total
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ret.Used = ret.Total - ret.Free
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ret.UsedPercent = float64(ret.Total-ret.Available) / float64(ret.Total) * 100.0
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return ret, nil
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}
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// SwapMemory returns swapinfo.
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func SwapMemory() (*SwapMemoryStat, error) {
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var ret *SwapMemoryStat
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swapUsage, err := common.DoSysctrl("vm.swapusage")
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if err != nil {
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return ret, err
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}
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total := strings.Replace(swapUsage[2], "M", "", 1)
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used := strings.Replace(swapUsage[5], "M", "", 1)
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free := strings.Replace(swapUsage[8], "M", "", 1)
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total_v, err := strconv.ParseFloat(total, 64)
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if err != nil {
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return nil, err
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}
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used_v, err := strconv.ParseFloat(used, 64)
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if err != nil {
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return nil, err
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}
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free_v, err := strconv.ParseFloat(free, 64)
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if err != nil {
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return nil, err
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}
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u := float64(0)
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if total_v != 0 {
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u = ((total_v - free_v) / total_v) * 100.0
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}
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// vm.swapusage shows "M", multiply 1000
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ret = &SwapMemoryStat{
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Total: uint64(total_v * 1000),
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Used: uint64(used_v * 1000),
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Free: uint64(free_v * 1000),
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UsedPercent: u,
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}
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return ret, nil
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}
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