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