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