From 57dc742c76d7876a2457594715a7b5bc2c9a92bd Mon Sep 17 00:00:00 2001
From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com>
Date: Mon, 3 Apr 2023 11:16:17 +0200
Subject: [chore]: Bump github.com/KimMachineGun/automemlimit from 0.2.4 to
 0.2.5 (#1666)

Bumps [github.com/KimMachineGun/automemlimit](https://github.com/KimMachineGun/automemlimit) from 0.2.4 to 0.2.5.
- [Release notes](https://github.com/KimMachineGun/automemlimit/releases)
- [Commits](https://github.com/KimMachineGun/automemlimit/compare/v0.2.4...v0.2.5)

---
updated-dependencies:
- dependency-name: github.com/KimMachineGun/automemlimit
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
---
 .../containerd/cgroups/v3/cgroup1/freezer.go       | 82 ++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 vendor/github.com/containerd/cgroups/v3/cgroup1/freezer.go

(limited to 'vendor/github.com/containerd/cgroups/v3/cgroup1/freezer.go')

diff --git a/vendor/github.com/containerd/cgroups/v3/cgroup1/freezer.go b/vendor/github.com/containerd/cgroups/v3/cgroup1/freezer.go
new file mode 100644
index 000000000..05d9f6c27
--- /dev/null
+++ b/vendor/github.com/containerd/cgroups/v3/cgroup1/freezer.go
@@ -0,0 +1,82 @@
+/*
+   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 cgroup1
+
+import (
+	"os"
+	"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 os.WriteFile(
+		filepath.Join(f.root, path, "freezer.state"),
+		[]byte(strings.ToUpper(string(state))),
+		defaultFilePerm,
+	)
+}
+
+func (f *freezerController) state(path string) (State, error) {
+	current, err := os.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)
+	}
+}
-- 
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