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cgroupv1.go
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cgroupv1.go
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// Unless explicitly stated otherwise all files in this repository are licensed
// under the Apache License Version 2.0.
// This product includes software developed at Datadog (https://www.datadoghq.com/).
// Copyright 2016-present Datadog, Inc.
//go:build linux
// +build linux
package cgroups
import "path/filepath"
type cgroupV1 struct {
identifier string
mountPoints map[string]string
path string
fr fileReader
}
func newCgroupV1(identifier, path string, mountPoints map[string]string) *cgroupV1 {
return &cgroupV1{
identifier: identifier,
mountPoints: mountPoints,
path: path,
fr: defaultFileReader,
}
}
func (c *cgroupV1) Identifier() string {
return c.identifier
}
func (c *cgroupV1) GetParent() (Cgroup, error) {
parentPath := filepath.Join(c.path, "/..")
return newCgroupV1(filepath.Base(parentPath), parentPath, c.mountPoints), nil
}
func (c *cgroupV1) GetStats(stats *Stats) error {
if stats == nil {
return &InvalidInputError{Desc: "input stats cannot be nil"}
}
cpuStats := CPUStats{}
err := c.GetCPUStats(&cpuStats)
if err != nil {
return err
}
stats.CPU = &cpuStats
memoryStats := MemoryStats{}
err = c.GetMemoryStats(&memoryStats)
if err != nil {
return err
}
stats.Memory = &memoryStats
ioStats := IOStats{}
err = c.GetIOStats(&ioStats)
if err != nil {
return err
}
stats.IO = &ioStats
pidStats := PIDStats{}
err = c.GetPIDStats(&pidStats)
if err != nil {
return err
}
stats.PID = &pidStats
return nil
}
func (c *cgroupV1) controllerMounted(controller string) bool {
_, found := c.mountPoints[controller]
return found
}
// Expects controller to exist, see controllerMounted
func (c *cgroupV1) pathFor(controller, file string) string {
return filepath.Join(c.mountPoints[controller], c.path, file)
}