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
|
package fs
import (
"math"
"strconv"
"github.com/opencontainers/cgroups"
"github.com/opencontainers/cgroups/fscommon"
)
type PidsGroup struct{}
func (s *PidsGroup) Name() string {
return "pids"
}
func (s *PidsGroup) Apply(path string, _ *cgroups.Resources, pid int) error {
return apply(path, pid)
}
func (s *PidsGroup) Set(path string, r *cgroups.Resources) error {
if r.PidsLimit != 0 {
// "max" is the fallback value.
limit := "max"
if r.PidsLimit > 0 {
limit = strconv.FormatInt(r.PidsLimit, 10)
}
if err := cgroups.WriteFile(path, "pids.max", limit); err != nil {
return err
}
}
return nil
}
func (s *PidsGroup) GetStats(path string, stats *cgroups.Stats) error {
if !cgroups.PathExists(path) {
return nil
}
current, err := fscommon.GetCgroupParamUint(path, "pids.current")
if err != nil {
return err
}
max, err := fscommon.GetCgroupParamUint(path, "pids.max")
if err != nil {
return err
}
// If no limit is set, read from pids.max returns "max", which is
// converted to MaxUint64 by GetCgroupParamUint. Historically, we
// represent "no limit" for pids as 0, thus this conversion.
if max == math.MaxUint64 {
max = 0
}
stats.PidsStats.Current = current
stats.PidsStats.Limit = max
return nil
}
|
