forked from cloudfoundry-attic/garden-linux
/
freezer.go
50 lines (41 loc) · 892 Bytes
/
freezer.go
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
package fs
import (
"strings"
"time"
"github.com/docker/libcontainer/cgroups"
)
type FreezerGroup struct {
}
func (s *FreezerGroup) Set(d *data) error {
switch d.c.Freezer {
case cgroups.Frozen, cgroups.Thawed:
dir, err := d.path("freezer")
if err != nil {
return err
}
if err := writeFile(dir, "freezer.state", string(d.c.Freezer)); err != nil {
return err
}
for {
state, err := readFile(dir, "freezer.state")
if err != nil {
return err
}
if strings.TrimSpace(state) == string(d.c.Freezer) {
break
}
time.Sleep(1 * time.Millisecond)
}
default:
if _, err := d.join("freezer"); err != nil && !cgroups.IsNotFound(err) {
return err
}
}
return nil
}
func (s *FreezerGroup) Remove(d *data) error {
return removePath(d.path("freezer"))
}
func (s *FreezerGroup) GetStats(path string, stats *cgroups.Stats) error {
return nil
}