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load_bsd.go
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load_bsd.go
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// +build freebsd openbsd
package load
import (
"context"
"os/exec"
"strings"
"unsafe"
"golang.org/x/sys/unix"
)
func Avg() (*AvgStat, error) {
return AvgWithContext(context.Background())
}
func AvgWithContext(ctx context.Context) (*AvgStat, error) {
// This SysctlRaw method borrowed from
// https://github.com/prometheus/node_exporter/blob/master/collector/loadavg_freebsd.go
type loadavg struct {
load [3]uint32
scale int
}
b, err := unix.SysctlRaw("vm.loadavg")
if err != nil {
return nil, err
}
load := *(*loadavg)(unsafe.Pointer((&b[0])))
scale := float64(load.scale)
ret := &AvgStat{
Load1: float64(load.load[0]) / scale,
Load5: float64(load.load[1]) / scale,
Load15: float64(load.load[2]) / scale,
}
return ret, nil
}
type forkstat struct {
forks int
vforks int
__tforks int
}
// Misc returns miscellaneous host-wide statistics.
// darwin use ps command to get process running/blocked count.
// Almost same as Darwin implementation, but state is different.
func Misc() (*MiscStat, error) {
return MiscWithContext(context.Background())
}
func MiscWithContext(ctx context.Context) (*MiscStat, error) {
bin, err := exec.LookPath("ps")
if err != nil {
return nil, err
}
out, err := invoke.CommandWithContext(ctx, bin, "axo", "state")
if err != nil {
return nil, err
}
lines := strings.Split(string(out), "\n")
ret := MiscStat{}
for _, l := range lines {
if strings.Contains(l, "R") {
ret.ProcsRunning++
} else if strings.Contains(l, "D") {
ret.ProcsBlocked++
}
}
f, err := getForkStat()
if err != nil {
return nil, err
}
ret.ProcsCreated = f.forks
return &ret, nil
}