| // Copyright (c) 2018 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CHROMEOS_COMPONENTS_NEARBY_CONDITION_VARIABLE_IMPL_H_ |
| #define CHROMEOS_COMPONENTS_NEARBY_CONDITION_VARIABLE_IMPL_H_ |
| |
| #include <memory> |
| |
| #include "base/macros.h" |
| #include "base/synchronization/waitable_event.h" |
| #include "chromeos/components/nearby/library/condition_variable.h" |
| #include "chromeos/components/nearby/library/exception.h" |
| #include "chromeos/components/nearby/library/lock.h" |
| |
| namespace chromeos { |
| |
| namespace nearby { |
| |
| // Concrete location::nearby::ConditionVariable implementation. |
| class ConditionVariableImpl : public location::nearby::ConditionVariable { |
| public: |
| explicit ConditionVariableImpl(location::nearby::Lock* lock); |
| ~ConditionVariableImpl() override; |
| |
| private: |
| // location::nearby::ConditionVariable: |
| void notify() override; |
| |
| // Expects the calling thread to already own |lock_|. Calling this without |
| // ownership of |lock_| results in undefined behavior, or at least behavior |
| // specified by the specific implementation of |lock_|. |
| location::nearby::Exception::Value wait() override; |
| |
| location::nearby::Lock* const lock_; |
| base::WaitableEvent notify_has_been_called_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ConditionVariableImpl); |
| }; |
| |
| } // namespace nearby |
| |
| } // namespace chromeos |
| |
| #endif // CHROMEOS_COMPONENTS_NEARBY_CONDITION_VARIABLE_IMPL_H_ |