109 lines
2.1 KiB
Go
109 lines
2.1 KiB
Go
// Copied and modified from sigar_linux.go.
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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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"unsafe"
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)
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/*
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#include <sys/param.h>
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#include <sys/mount.h>
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#include <sys/ucred.h>
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <unistd.h>
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#include <time.h>
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*/
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import "C"
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func init() {
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system.ticks = uint64(C.sysconf(C._SC_CLK_TCK))
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Procd = "/compat/linux/proc"
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getLinuxBootTime()
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}
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func getMountTableFileName() string {
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return Procd + "/mtab"
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}
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func (self *Uptime) Get() error {
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ts := C.struct_timespec{}
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if _, err := C.clock_gettime(C.CLOCK_UPTIME, &ts); err != nil {
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return err
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}
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self.Length = float64(ts.tv_sec) + 1e-9*float64(ts.tv_nsec)
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return nil
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}
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func (self *FDUsage) Get() error {
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val := C.uint32_t(0)
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sc := C.size_t(4)
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name := C.CString("kern.openfiles")
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_, err := C.sysctlbyname(name, unsafe.Pointer(&val), &sc, nil, 0)
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C.free(unsafe.Pointer(name))
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if err != nil {
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return err
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}
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self.Open = uint64(val)
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name = C.CString("kern.maxfiles")
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_, err = C.sysctlbyname(name, unsafe.Pointer(&val), &sc, nil, 0)
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C.free(unsafe.Pointer(name))
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if err != nil {
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return err
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}
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self.Max = uint64(val)
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self.Unused = self.Max - self.Open
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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("/proc/"+strconv.Itoa(pid)+"/rlimit", func(line string) bool {
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if strings.HasPrefix(line, "nofile") {
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fields := strings.Fields(line)
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if len(fields) == 3 {
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self.SoftLimit, _ = strconv.ParseUint(fields[1], 10, 64)
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self.HardLimit, _ = strconv.ParseUint(fields[2], 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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// linprocfs only provides this information for this process (self).
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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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return nil
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}
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