From a031b83a09a8628435317a03f199cdc18b78262f Mon Sep 17 00:00:00 2001 From: Matthew Heon Date: Wed, 1 Nov 2017 11:24:59 -0400 Subject: Initial checkin from CRI-O repo Signed-off-by: Matthew Heon --- vendor/github.com/containerd/cgroups/control.go | 58 +++++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 vendor/github.com/containerd/cgroups/control.go (limited to 'vendor/github.com/containerd/cgroups/control.go') diff --git a/vendor/github.com/containerd/cgroups/control.go b/vendor/github.com/containerd/cgroups/control.go new file mode 100644 index 000000000..c83b2417f --- /dev/null +++ b/vendor/github.com/containerd/cgroups/control.go @@ -0,0 +1,58 @@ +package cgroups + +import ( + "os" + + specs "github.com/opencontainers/runtime-spec/specs-go" +) + +const ( + cgroupProcs = "cgroup.procs" + defaultDirPerm = 0755 +) + +// defaultFilePerm is a var so that the test framework can change the filemode +// of all files created when the tests are running. The difference between the +// tests and real world use is that files like "cgroup.procs" will exist when writing +// to a read cgroup filesystem and do not exist prior when running in the tests. +// this is set to a non 0 value in the test code +var defaultFilePerm = os.FileMode(0) + +type Process struct { + // Subsystem is the name of the subsystem that the process is in + Subsystem Name + // Pid is the process id of the process + Pid int + // Path is the full path of the subsystem and location that the process 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 { + // New creates a new cgroup under the calling cgroup + New(string, *specs.LinuxResources) (Cgroup, error) + // Add adds a process to the cgroup + Add(Process) error + // Delete removes the cgroup as a whole + Delete() error + // MoveTo moves all the processes under the calling cgroup to the provided one + // subsystems are moved one at a time + MoveTo(Cgroup) error + // Stat returns the stats for all subsystems in the cgroup + Stat(...ErrorHandler) (*Stats, error) + // Update updates all the subsystems with the provided resource changes + Update(resources *specs.LinuxResources) error + // Processes returns all the processes in a select subsystem for the cgroup + Processes(Name, bool) ([]Process, error) + // Freeze freezes or pauses all processes inside the cgroup + Freeze() error + // Thaw thaw or resumes all processes inside the cgroup + Thaw() error + // OOMEventFD returns the memory subsystem's event fd for OOM events + OOMEventFD() (uintptr, error) + // State returns the cgroups current state + State() State + // Subsystems returns all the subsystems in the cgroup + Subsystems() []Subsystem +} -- cgit v1.2.3-54-g00ecf