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Diffstat (limited to 'vendor/github.com/containerd/cgroups/freezer.go')
-rw-r--r--vendor/github.com/containerd/cgroups/freezer.go82
1 files changed, 0 insertions, 82 deletions
diff --git a/vendor/github.com/containerd/cgroups/freezer.go b/vendor/github.com/containerd/cgroups/freezer.go
deleted file mode 100644
index 5e668408a..000000000
--- a/vendor/github.com/containerd/cgroups/freezer.go
+++ /dev/null
@@ -1,82 +0,0 @@
-/*
- Copyright The containerd Authors.
-
- Licensed under the Apache License, Version 2.0 (the "License");
- you may not use this file except in compliance with the License.
- You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing, software
- distributed under the License is distributed on an "AS IS" BASIS,
- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- See the License for the specific language governing permissions and
- limitations under the License.
-*/
-
-package cgroups
-
-import (
- "io/ioutil"
- "path/filepath"
- "strings"
- "time"
-)
-
-func NewFreezer(root string) *freezerController {
- return &freezerController{
- root: filepath.Join(root, string(Freezer)),
- }
-}
-
-type freezerController struct {
- root string
-}
-
-func (f *freezerController) Name() Name {
- return Freezer
-}
-
-func (f *freezerController) Path(path string) string {
- return filepath.Join(f.root, path)
-}
-
-func (f *freezerController) Freeze(path string) error {
- return f.waitState(path, Frozen)
-}
-
-func (f *freezerController) Thaw(path string) error {
- return f.waitState(path, Thawed)
-}
-
-func (f *freezerController) changeState(path string, state State) error {
- return ioutil.WriteFile(
- filepath.Join(f.root, path, "freezer.state"),
- []byte(strings.ToUpper(string(state))),
- defaultFilePerm,
- )
-}
-
-func (f *freezerController) state(path string) (State, error) {
- current, err := ioutil.ReadFile(filepath.Join(f.root, path, "freezer.state"))
- if err != nil {
- return "", err
- }
- return State(strings.ToLower(strings.TrimSpace(string(current)))), nil
-}
-
-func (f *freezerController) waitState(path string, state State) error {
- for {
- if err := f.changeState(path, state); err != nil {
- return err
- }
- current, err := f.state(path)
- if err != nil {
- return err
- }
- if current == state {
- return nil
- }
- time.Sleep(1 * time.Millisecond)
- }
-}