29 lines
619 B
Go
29 lines
619 B
Go
//go:build linux && !cgo
|
|
// +build linux,!cgo
|
|
|
|
package loadavg
|
|
|
|
import (
|
|
"fmt"
|
|
"io"
|
|
"os"
|
|
)
|
|
|
|
func get() (*Stats, error) {
|
|
// Reference: man 5 proc, loadavg_proc_show in Linux source code
|
|
file, err := os.Open("/proc/loadavg")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer file.Close()
|
|
return collectLoadavgStats(file)
|
|
}
|
|
|
|
func collectLoadavgStats(out io.Reader) (*Stats, error) {
|
|
var loadavg Stats
|
|
ret, err := fmt.Fscanf(out, "%f %f %f", &loadavg.Loadavg1, &loadavg.Loadavg5, &loadavg.Loadavg15)
|
|
if err != nil || ret != 3 {
|
|
return nil, fmt.Errorf("unexpected format of /proc/loadavg")
|
|
}
|
|
return &loadavg, nil
|
|
}
|