| // 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") |
| } |
| } |
