/
cpucgrouper_linux.go
55 lines (45 loc) · 1.31 KB
/
cpucgrouper_linux.go
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package cgroups
import (
"os"
"path/filepath"
"code.cloudfoundry.org/garden"
"github.com/opencontainers/runc/libcontainer/cgroups"
"github.com/opencontainers/runc/libcontainer/cgroups/fs"
)
type CPUCgrouper struct {
cgroupRoot string
}
func NewCPUCgrouper(cgroupRoot string) CPUCgrouper {
return CPUCgrouper{
cgroupRoot: cgroupRoot,
}
}
func (c CPUCgrouper) CreateBadCgroup(handle string) error {
if err := os.MkdirAll(filepath.Join(c.cgroupRoot, BadCgroupName, handle), 0755); err != nil {
return err
}
return nil
}
func (c CPUCgrouper) DestroyBadCgroup(handle string) error {
if err := os.RemoveAll(filepath.Join(c.cgroupRoot, BadCgroupName, handle)); err != nil {
return err
}
return nil
}
func (c CPUCgrouper) ReadBadCgroupUsage(handle string) (garden.ContainerCPUStat, error) {
stats := cgroups.Stats{}
cpuactCgroup := &fs.CpuacctGroup{}
path := filepath.Join(c.cgroupRoot, BadCgroupName, handle)
if _, err := os.Stat(path); err != nil {
return garden.ContainerCPUStat{}, err
}
if err := cpuactCgroup.GetStats(path, &stats); err != nil {
return garden.ContainerCPUStat{}, err
}
cpuStats := garden.ContainerCPUStat{
Usage: stats.CpuStats.CpuUsage.TotalUsage,
System: stats.CpuStats.CpuUsage.UsageInKernelmode,
User: stats.CpuStats.CpuUsage.UsageInUsermode,
}
return cpuStats, nil
}