| // Copyright 2015 The Vanadium Authors. All rights reserved. | |
| // Use of this source code is governed by a BSD-style | |
| // license that can be found in the LICENSE file. | |
| package sync | |
| import "sync" | |
| // DebugMutex supports checking whether a mutex is locked. | |
| type DebugMutex struct { | |
| mutex sync.Mutex | |
| isLocked bool | |
| } | |
| func (m *DebugMutex) Lock() { | |
| m.mutex.Lock() | |
| m.isLocked = true | |
| } | |
| func (m *DebugMutex) Unlock() { | |
| m.CheckLocked() | |
| m.isLocked = false | |
| m.mutex.Unlock() | |
| } | |
| // CheckLocked panics if the lock is not held. | |
| func (m *DebugMutex) CheckLocked() { | |
| if !m.isLocked { | |
| panic("Mutex is not locked") | |
| } | |
| } |