mirror of
https://github.com/netbirdio/gvisor.git
synced 2026-05-22 17:12:49 -07:00
Ayush Ranjan
29 lines
1.3 KiB
Go
29 lines
1.3 KiB
Go
// Copyright 2022 The gVisor 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 locking implements lock primitives with the correctness validator.
|
|
//
|
|
// All mutexes are divided on classes and the validator check following conditions:
|
|
// - Mutexes of the same class are not taken more than once except cases when
|
|
// that is expected.
|
|
// - Mutexes are never locked in a reverse order. Lock dependencies are tracked
|
|
// on the class level.
|
|
//
|
|
// The validator is implemented in a very straightforward way. For each mutex
|
|
// class, we maintain the ancestors list of all classes that have ever been
|
|
// taken before the target one. For each goroutine, we have the list of
|
|
// currently locked mutexes. And finally, all lock methods check that
|
|
// ancestors of currently locked mutexes don't contain the target one.
|
|
package locking
|