1 // Copyright 2016 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef BASE_TASK_SCHEDULER_SCHEDULER_LOCK_IMPL_H 6 #define BASE_TASK_SCHEDULER_SCHEDULER_LOCK_IMPL_H 7 8 #include <memory> 9 10 #include "base/base_export.h" 11 #include "base/macros.h" 12 #include "base/synchronization/lock.h" 13 14 namespace base { 15 16 class ConditionVariable; 17 18 namespace internal { 19 20 // A regular lock with simple deadlock correctness checking. 21 // This lock tracks all of the available locks to make sure that any locks are 22 // acquired in an expected order. 23 // See scheduler_lock.h for details. 24 class BASE_EXPORT SchedulerLockImpl { 25 public: 26 SchedulerLockImpl(); 27 explicit SchedulerLockImpl(const SchedulerLockImpl* predecessor); 28 ~SchedulerLockImpl(); 29 30 void Acquire(); 31 void Release(); 32 33 void AssertAcquired() const; 34 35 std::unique_ptr<ConditionVariable> CreateConditionVariable(); 36 37 private: 38 Lock lock_; 39 40 DISALLOW_COPY_AND_ASSIGN(SchedulerLockImpl); 41 }; 42 43 } // namespace internal 44 } // namespace base 45 46 #endif // BASE_TASK_SCHEDULER_SCHEDULER_LOCK_IMPL_H 47
