diff options
Diffstat (limited to 'vendor/github.com/containerd/cgroups/freezer.go')
-rw-r--r-- | vendor/github.com/containerd/cgroups/freezer.go | 82 |
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) - } -} |