65 lines
1.2 KiB
Go
65 lines
1.2 KiB
Go
package fs
|
|
|
|
import (
|
|
"bufio"
|
|
"os"
|
|
"path/filepath"
|
|
"strconv"
|
|
)
|
|
|
|
type cpuGroup struct {
|
|
}
|
|
|
|
func (s *cpuGroup) Set(d *data) error {
|
|
// We always want to join the cpu group, to allow fair cpu scheduling
|
|
// on a container basis
|
|
dir, err := d.join("cpu")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if d.c.CpuShares != 0 {
|
|
if err := writeFile(dir, "cpu.shares", strconv.FormatInt(d.c.CpuShares, 10)); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
if d.c.CpuPeriod != 0 {
|
|
if err := writeFile(dir, "cpu.cfs_period_us", strconv.FormatInt(d.c.CpuPeriod, 10)); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
if d.c.CpuQuota != 0 {
|
|
if err := writeFile(dir, "cpu.cfs_quota_us", strconv.FormatInt(d.c.CpuQuota, 10)); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (s *cpuGroup) Remove(d *data) error {
|
|
return removePath(d.path("cpu"))
|
|
}
|
|
|
|
func (s *cpuGroup) Stats(d *data) (map[string]float64, error) {
|
|
paramData := make(map[string]float64)
|
|
path, err := d.path("cpu")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
f, err := os.Open(filepath.Join(path, "cpu.stat"))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer f.Close()
|
|
|
|
sc := bufio.NewScanner(f)
|
|
for sc.Scan() {
|
|
t, v, err := getCgroupParamKeyValue(sc.Text())
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
paramData[t] = v
|
|
}
|
|
return paramData, nil
|
|
}
|