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https://gitlab.com/pulsechaincom/go-pulse.git
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109 lines
2.4 KiB
Go
109 lines
2.4 KiB
Go
// Copyright (c) 2012 VMware, Inc.
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package gosigar
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import (
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"io/ioutil"
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"strconv"
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"strings"
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"syscall"
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)
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func init() {
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system.ticks = 100 // C.sysconf(C._SC_CLK_TCK)
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Procd = "/proc"
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getLinuxBootTime()
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}
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func getMountTableFileName() string {
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return "/etc/mtab"
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}
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func (self *Uptime) Get() 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 err
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}
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self.Length = float64(sysinfo.Uptime)
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return nil
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}
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func (self *FDUsage) Get() error {
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return readFile(Procd+"/sys/fs/file-nr", func(line string) bool {
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fields := strings.Fields(line)
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if len(fields) == 3 {
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self.Open, _ = strconv.ParseUint(fields[0], 10, 64)
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self.Unused, _ = strconv.ParseUint(fields[1], 10, 64)
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self.Max, _ = strconv.ParseUint(fields[2], 10, 64)
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}
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return false
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})
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}
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func (self *HugeTLBPages) Get() error {
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table, err := parseMeminfo()
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if err != nil {
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return err
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}
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self.Total, _ = table["HugePages_Total"]
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self.Free, _ = table["HugePages_Free"]
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self.Reserved, _ = table["HugePages_Rsvd"]
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self.Surplus, _ = table["HugePages_Surp"]
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self.DefaultSize, _ = table["Hugepagesize"]
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if totalSize, found := table["Hugetlb"]; found {
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self.TotalAllocatedSize = totalSize
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} else {
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// If Hugetlb is not present, or huge pages of different sizes
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// are used, this figure can be unaccurate.
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// TODO (jsoriano): Extract information from /sys/kernel/mm/hugepages too
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self.TotalAllocatedSize = (self.Total - self.Free + self.Reserved) * self.DefaultSize
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}
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return nil
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}
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func (self *ProcFDUsage) Get(pid int) error {
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err := readFile(procFileName(pid, "limits"), func(line string) bool {
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if strings.HasPrefix(line, "Max open files") {
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fields := strings.Fields(line)
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if len(fields) == 6 {
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self.SoftLimit, _ = strconv.ParseUint(fields[3], 10, 64)
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self.HardLimit, _ = strconv.ParseUint(fields[4], 10, 64)
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}
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return false
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}
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return true
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})
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if err != nil {
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return err
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}
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fds, err := ioutil.ReadDir(procFileName(pid, "fd"))
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if err != nil {
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return err
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}
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self.Open = uint64(len(fds))
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return nil
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}
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func parseCpuStat(self *Cpu, line string) error {
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fields := strings.Fields(line)
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self.User, _ = strtoull(fields[1])
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self.Nice, _ = strtoull(fields[2])
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self.Sys, _ = strtoull(fields[3])
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self.Idle, _ = strtoull(fields[4])
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self.Wait, _ = strtoull(fields[5])
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self.Irq, _ = strtoull(fields[6])
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self.SoftIrq, _ = strtoull(fields[7])
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self.Stolen, _ = strtoull(fields[8])
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return nil
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}
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