101 lines
2.2 KiB
Go
101 lines
2.2 KiB
Go
// +build linux
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package mem
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import (
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"strconv"
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"strings"
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"syscall"
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common "github.com/shirou/gopsutil/common"
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)
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func VirtualMemory() (*VirtualMemoryStat, error) {
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filename := common.GetEnv("HOST_PROC", "/proc") + "/meminfo"
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lines, _ := common.ReadLines(filename)
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// flag if MemAvailable is in /proc/meminfo (kernel 3.14+)
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memavail := false
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ret := &VirtualMemoryStat{}
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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.TrimSpace(fields[1])
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value = strings.Replace(value, " kB", "", -1)
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t, err := strconv.ParseUint(value, 10, 64)
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if err != nil {
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return ret, err
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}
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switch key {
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case "MemTotal":
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ret.Total = t * 1024
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case "MemFree":
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ret.Free = t * 1024
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case "MemAvailable":
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memavail = true
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ret.Available = t * 1024
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case "Buffers":
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ret.Buffers = t * 1024
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case "Cached":
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ret.Cached = t * 1024
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case "Active":
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ret.Active = t * 1024
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case "Inactive":
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ret.Inactive = t * 1024
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}
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}
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if !memavail {
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ret.Available = ret.Free + ret.Buffers + ret.Cached
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}
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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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func SwapMemory() (*SwapMemoryStat, error) {
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sysinfo := &syscall.Sysinfo_t{}
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if err := syscall.Sysinfo(sysinfo); err != nil {
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return nil, err
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}
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ret := &SwapMemoryStat{
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Total: uint64(sysinfo.Totalswap),
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Free: uint64(sysinfo.Freeswap),
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}
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ret.Used = ret.Total - ret.Free
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//check Infinity
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if ret.Total != 0 {
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ret.UsedPercent = float64(ret.Total-ret.Free) / float64(ret.Total) * 100.0
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} else {
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ret.UsedPercent = 0
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}
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filename := common.GetEnv("HOST_PROC", "/proc") + "/vmstat"
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lines, _ := common.ReadLines(filename)
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for _, l := range lines {
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fields := strings.Fields(l)
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if len(fields) < 2 {
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continue
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}
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switch fields[0] {
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case "pswpin":
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value, err := strconv.ParseUint(fields[1], 10, 64)
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if err != nil {
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continue
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}
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ret.Sin = value * 4 * 1024
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case "pswpout":
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value, err := strconv.ParseUint(fields[1], 10, 64)
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if err != nil {
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continue
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}
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ret.Sout = value * 4 * 1024
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}
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}
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return ret, nil
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}
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