blob: f37ac7611a4571621fd7519a2c822b50c4022fc9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
package cgroups
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
spec "github.com/opencontainers/runtime-spec/specs-go"
)
type pidHandler struct {
}
func getPidsHandler() *pidHandler {
return &pidHandler{}
}
// Apply set the specified constraints
func (c *pidHandler) Apply(ctr *CgroupControl, res *spec.LinuxResources) error {
if res.Pids == nil {
return nil
}
if ctr.cgroup2 {
return fmt.Errorf("function not implemented yet")
}
p := filepath.Join(ctr.getCgroupv1Path(Pids), "pids.max")
return ioutil.WriteFile(p, []byte(fmt.Sprintf("%d\n", res.Pids.Limit)), 0644)
}
// Create the cgroup
func (c *pidHandler) Create(ctr *CgroupControl) (bool, error) {
if ctr.cgroup2 {
return false, fmt.Errorf("function not implemented yet")
}
return ctr.createCgroupDirectory(Pids)
}
// Destroy the cgroup
func (c *pidHandler) Destroy(ctr *CgroupControl) error {
return os.Remove(ctr.getCgroupv1Path(Pids))
}
// Stat fills a metrics structure with usage stats for the controller
func (c *pidHandler) Stat(ctr *CgroupControl, m *Metrics) error {
var PIDRoot string
if ctr.cgroup2 {
return fmt.Errorf("function not implemented yet")
}
PIDRoot := ctr.getCgroupv1Path(Pids)
current, err := readFileAsUint64(filepath.Join(PIDRoot, "pids.current"))
if err != nil {
return err
}
m.Pids = PidsMetrics{Current: current}
return nil
}
|
