forked from nicocha30/gvisor-ligolo
-
Notifications
You must be signed in to change notification settings - Fork 0
/
locking.go
28 lines (27 loc) · 1.33 KB
/
locking.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
// 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