diff options
Diffstat (limited to 'vendor/github.com/containerd/cgroups')
| -rw-r--r-- | vendor/github.com/containerd/cgroups/README.md | 14 | ||||
| -rw-r--r-- | vendor/github.com/containerd/cgroups/blkio.go | 55 | ||||
| -rw-r--r-- | vendor/github.com/containerd/cgroups/cgroup.go | 51 | ||||
| -rw-r--r-- | vendor/github.com/containerd/cgroups/control.go | 11 | ||||
| -rw-r--r-- | vendor/github.com/containerd/cgroups/cpuset.go | 10 | ||||
| -rw-r--r-- | vendor/github.com/containerd/cgroups/net_prio.go | 2 | ||||
| -rw-r--r-- | vendor/github.com/containerd/cgroups/subsystem.go | 2 | ||||
| -rw-r--r-- | vendor/github.com/containerd/cgroups/systemd.go | 2 | ||||
| -rw-r--r-- | vendor/github.com/containerd/cgroups/utils.go | 29 |
9 files changed, 141 insertions, 35 deletions
diff --git a/vendor/github.com/containerd/cgroups/README.md b/vendor/github.com/containerd/cgroups/README.md index 69e932a9f..81ad11cc7 100644 --- a/vendor/github.com/containerd/cgroups/README.md +++ b/vendor/github.com/containerd/cgroups/README.md @@ -1,8 +1,9 @@ # cgroups [](https://travis-ci.org/containerd/cgroups) - [](https://codecov.io/gh/containerd/cgroups) +[](https://godoc.org/github.com/containerd/cgroups) +[](https://goreportcard.com/report/github.com/containerd/cgroups) Go package for creating, managing, inspecting, and destroying cgroups. The resources format for settings on the cgroup uses the OCI runtime-spec found @@ -110,3 +111,14 @@ err := control.MoveTo(destination) ```go subCgroup, err := control.New("child", resources) ``` + +## Project details + +Cgroups is a containerd sub-project, licensed under the [Apache 2.0 license](./LICENSE). +As a containerd sub-project, you will find the: + + * [Project governance](https://github.com/containerd/project/blob/master/GOVERNANCE.md), + * [Maintainers](https://github.com/containerd/project/blob/master/MAINTAINERS), + * and [Contributing guidelines](https://github.com/containerd/project/blob/master/CONTRIBUTING.md) + +information in our [`containerd/project`](https://github.com/containerd/project) repository. diff --git a/vendor/github.com/containerd/cgroups/blkio.go b/vendor/github.com/containerd/cgroups/blkio.go index fc1e689cb..875fb5546 100644 --- a/vendor/github.com/containerd/cgroups/blkio.go +++ b/vendor/github.com/containerd/cgroups/blkio.go @@ -191,31 +191,42 @@ func (b *blkioController) readEntry(devices map[deviceKey]string, path, name str } func createBlkioSettings(blkio *specs.LinuxBlockIO) []blkioSettings { - settings := []blkioSettings{ - { - name: "weight", - value: blkio.Weight, - format: uintf, - }, - { - name: "leaf_weight", - value: blkio.LeafWeight, - format: uintf, - }, - } - for _, wd := range blkio.WeightDevice { + settings := []blkioSettings{} + + if blkio.Weight != nil { settings = append(settings, blkioSettings{ - name: "weight_device", - value: wd, - format: weightdev, - }, + name: "weight", + value: blkio.Weight, + format: uintf, + }) + } + if blkio.LeafWeight != nil { + settings = append(settings, blkioSettings{ - name: "leaf_weight_device", - value: wd, - format: weightleafdev, + name: "leaf_weight", + value: blkio.LeafWeight, + format: uintf, }) } + for _, wd := range blkio.WeightDevice { + if wd.Weight != nil { + settings = append(settings, + blkioSettings{ + name: "weight_device", + value: wd, + format: weightdev, + }) + } + if wd.LeafWeight != nil { + settings = append(settings, + blkioSettings{ + name: "leaf_weight_device", + value: wd, + format: weightleafdev, + }) + } + } for _, t := range []struct { name string list []specs.LinuxThrottleDevice @@ -265,12 +276,12 @@ func uintf(v interface{}) []byte { func weightdev(v interface{}) []byte { wd := v.(specs.LinuxWeightDevice) - return []byte(fmt.Sprintf("%d:%d %d", wd.Major, wd.Minor, wd.Weight)) + return []byte(fmt.Sprintf("%d:%d %d", wd.Major, wd.Minor, *wd.Weight)) } func weightleafdev(v interface{}) []byte { wd := v.(specs.LinuxWeightDevice) - return []byte(fmt.Sprintf("%d:%d %d", wd.Major, wd.Minor, wd.LeafWeight)) + return []byte(fmt.Sprintf("%d:%d %d", wd.Major, wd.Minor, *wd.LeafWeight)) } func throttleddev(v interface{}) []byte { diff --git a/vendor/github.com/containerd/cgroups/cgroup.go b/vendor/github.com/containerd/cgroups/cgroup.go index 7959feb49..03fcb9284 100644 --- a/vendor/github.com/containerd/cgroups/cgroup.go +++ b/vendor/github.com/containerd/cgroups/cgroup.go @@ -48,11 +48,12 @@ func New(hierarchy Hierarchy, path Path, resources *specs.LinuxResources) (Cgrou // Load will load an existing cgroup and allow it to be controlled func Load(hierarchy Hierarchy, path Path) (Cgroup, error) { + var activeSubsystems []Subsystem subsystems, err := hierarchy() if err != nil { return nil, err } - // check the the subsystems still exist + // check that the subsystems still exist, and keep only those that actually exist for _, s := range pathers(subsystems) { p, err := path(s.Name()) if err != nil { @@ -63,14 +64,15 @@ func Load(hierarchy Hierarchy, path Path) (Cgroup, error) { } if _, err := os.Lstat(s.Path(p)); err != nil { if os.IsNotExist(err) { - return nil, ErrCgroupDeleted + continue } return nil, err } + activeSubsystems = append(activeSubsystems, s) } return &cgroup{ path: path, - subsystems: subsystems, + subsystems: activeSubsystems, }, nil } @@ -319,6 +321,49 @@ func (c *cgroup) processes(subsystem Name, recursive bool) ([]Process, error) { return processes, err } +// Tasks returns the tasks running inside the cgroup along +// with the subsystem used, pid, and path +func (c *cgroup) Tasks(subsystem Name, recursive bool) ([]Task, error) { + c.mu.Lock() + defer c.mu.Unlock() + if c.err != nil { + return nil, c.err + } + return c.tasks(subsystem, recursive) +} + +func (c *cgroup) tasks(subsystem Name, recursive bool) ([]Task, error) { + s := c.getSubsystem(subsystem) + sp, err := c.path(subsystem) + if err != nil { + return nil, err + } + path := s.(pather).Path(sp) + var tasks []Task + err = filepath.Walk(path, func(p string, info os.FileInfo, err error) error { + if err != nil { + return err + } + if !recursive && info.IsDir() { + if p == path { + return nil + } + return filepath.SkipDir + } + dir, name := filepath.Split(p) + if name != cgroupTasks { + return nil + } + procs, err := readTasksPids(dir, subsystem) + if err != nil { + return err + } + tasks = append(tasks, procs...) + return nil + }) + return tasks, err +} + // Freeze freezes the entire cgroup and all the processes inside it func (c *cgroup) Freeze() error { c.mu.Lock() diff --git a/vendor/github.com/containerd/cgroups/control.go b/vendor/github.com/containerd/cgroups/control.go index 63e2df93d..1f62c54f3 100644 --- a/vendor/github.com/containerd/cgroups/control.go +++ b/vendor/github.com/containerd/cgroups/control.go @@ -44,6 +44,15 @@ type Process struct { Path string } +type Task struct { + // Subsystem is the name of the subsystem that the task is in + Subsystem Name + // Pid is the process id of the task + Pid int + // Path is the full path of the subsystem and location that the task is in + Path string +} + // Cgroup handles interactions with the individual groups to perform // actions on them as them main interface to this cgroup package type Cgroup interface { @@ -64,6 +73,8 @@ type Cgroup interface { Update(resources *specs.LinuxResources) error // Processes returns all the processes in a select subsystem for the cgroup Processes(Name, bool) ([]Process, error) + // Tasks returns all the tasks in a select subsystem for the cgroup + Tasks(Name, bool) ([]Task, error) // Freeze freezes or pauses all processes inside the cgroup Freeze() error // Thaw thaw or resumes all processes inside the cgroup diff --git a/vendor/github.com/containerd/cgroups/cpuset.go b/vendor/github.com/containerd/cgroups/cpuset.go index f182aa68c..30208515e 100644 --- a/vendor/github.com/containerd/cgroups/cpuset.go +++ b/vendor/github.com/containerd/cgroups/cpuset.go @@ -57,21 +57,21 @@ func (c *cpusetController) Create(path string, resources *specs.LinuxResources) if resources.CPU != nil { for _, t := range []struct { name string - value *string + value string }{ { name: "cpus", - value: &resources.CPU.Cpus, + value: resources.CPU.Cpus, }, { name: "mems", - value: &resources.CPU.Mems, + value: resources.CPU.Mems, }, } { - if t.value != nil { + if t.value != "" { if err := ioutil.WriteFile( filepath.Join(c.Path(path), fmt.Sprintf("cpuset.%s", t.name)), - []byte(*t.value), + []byte(t.value), defaultFilePerm, ); err != nil { return err diff --git a/vendor/github.com/containerd/cgroups/net_prio.go b/vendor/github.com/containerd/cgroups/net_prio.go index c77169215..612e1bcd2 100644 --- a/vendor/github.com/containerd/cgroups/net_prio.go +++ b/vendor/github.com/containerd/cgroups/net_prio.go @@ -50,7 +50,7 @@ func (n *netprioController) Create(path string, resources *specs.LinuxResources) if resources.Network != nil { for _, prio := range resources.Network.Priorities { if err := ioutil.WriteFile( - filepath.Join(n.Path(path), "net_prio_ifpriomap"), + filepath.Join(n.Path(path), "net_prio.ifpriomap"), formatPrio(prio.Name, prio.Priority), defaultFilePerm, ); err != nil { diff --git a/vendor/github.com/containerd/cgroups/subsystem.go b/vendor/github.com/containerd/cgroups/subsystem.go index 933a6c38d..23de04d49 100644 --- a/vendor/github.com/containerd/cgroups/subsystem.go +++ b/vendor/github.com/containerd/cgroups/subsystem.go @@ -42,7 +42,7 @@ const ( ) // Subsystems returns a complete list of the default cgroups -// avaliable on most linux systems +// available on most linux systems func Subsystems() []Name { n := []Name{ Hugetlb, diff --git a/vendor/github.com/containerd/cgroups/systemd.go b/vendor/github.com/containerd/cgroups/systemd.go index 2486ed194..c5d4e3081 100644 --- a/vendor/github.com/containerd/cgroups/systemd.go +++ b/vendor/github.com/containerd/cgroups/systemd.go @@ -34,7 +34,7 @@ const ( var ( canDelegate bool - once sync.Once + once sync.Once ) func Systemd() ([]Subsystem, error) { diff --git a/vendor/github.com/containerd/cgroups/utils.go b/vendor/github.com/containerd/cgroups/utils.go index 345be4e46..f3129b1a3 100644 --- a/vendor/github.com/containerd/cgroups/utils.go +++ b/vendor/github.com/containerd/cgroups/utils.go @@ -111,7 +111,7 @@ func remove(path string) error { return fmt.Errorf("cgroups: unable to remove path %q", path) } -// readPids will read all the pids in a cgroup by the provided path +// readPids will read all the pids of processes in a cgroup by the provided path func readPids(path string, subsystem Name) ([]Process, error) { f, err := os.Open(filepath.Join(path, cgroupProcs)) if err != nil { @@ -138,6 +138,33 @@ func readPids(path string, subsystem Name) ([]Process, error) { return out, nil } +// readTasksPids will read all the pids of tasks in a cgroup by the provided path +func readTasksPids(path string, subsystem Name) ([]Task, error) { + f, err := os.Open(filepath.Join(path, cgroupTasks)) + if err != nil { + return nil, err + } + defer f.Close() + var ( + out []Task + s = bufio.NewScanner(f) + ) + for s.Scan() { + if t := s.Text(); t != "" { + pid, err := strconv.Atoi(t) + if err != nil { + return nil, err + } + out = append(out, Task{ + Pid: pid, + Subsystem: subsystem, + Path: path, + }) + } + } + return out, nil +} + func hugePageSizes() ([]string, error) { var ( pageSizes []string |