telegraf/plugins/system/ps/mem/mem_darwin.go

110 lines
2.1 KiB
Go

// +build darwin
package mem
import (
"os/exec"
"strconv"
"strings"
common "github.com/influxdb/tivan/plugins/system/ps/common"
)
func getPageSize() (uint64, error) {
out, err := exec.Command("pagesize").Output()
if err != nil {
return 0, err
}
o := strings.TrimSpace(string(out))
p, err := strconv.ParseUint(o, 10, 64)
if err != nil {
return 0, err
}
return p, nil
}
// VirtualMemory returns VirtualmemoryStat.
func VirtualMemory() (*VirtualMemoryStat, error) {
p, err := getPageSize()
if err != nil {
return nil, err
}
total, err := common.DoSysctrl("hw.memsize")
if err != nil {
return nil, err
}
free, err := common.DoSysctrl("vm.page_free_count")
if err != nil {
return nil, err
}
parsed := make([]uint64, 0, 7)
vv := []string{
total[0],
free[0],
}
for _, target := range vv {
t, err := strconv.ParseUint(target, 10, 64)
if err != nil {
return nil, err
}
parsed = append(parsed, t)
}
ret := &VirtualMemoryStat{
Total: parsed[0] * p,
Free: parsed[1] * p,
}
// TODO: platform independent (worked freebsd?)
ret.Available = ret.Free + ret.Buffers + ret.Cached
ret.Used = ret.Total - ret.Free
ret.UsedPercent = float64(ret.Total-ret.Available) / float64(ret.Total) * 100.0
return ret, nil
}
// SwapMemory returns swapinfo.
func SwapMemory() (*SwapMemoryStat, error) {
var ret *SwapMemoryStat
swapUsage, err := common.DoSysctrl("vm.swapusage")
if err != nil {
return ret, err
}
total := strings.Replace(swapUsage[2], "M", "", 1)
used := strings.Replace(swapUsage[5], "M", "", 1)
free := strings.Replace(swapUsage[8], "M", "", 1)
total_v, err := strconv.ParseFloat(total, 64)
if err != nil {
return nil, err
}
used_v, err := strconv.ParseFloat(used, 64)
if err != nil {
return nil, err
}
free_v, err := strconv.ParseFloat(free, 64)
if err != nil {
return nil, err
}
u := float64(0)
if total_v != 0 {
u = ((total_v - free_v) / total_v) * 100.0
}
// vm.swapusage shows "M", multiply 1000
ret = &SwapMemoryStat{
Total: uint64(total_v * 1000),
Used: uint64(used_v * 1000),
Free: uint64(free_v * 1000),
UsedPercent: u,
}
return ret, nil
}