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nearby/cpp/platform/impl/windows/atomic_boolean.h
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hai007 78f19e26be Internal change
PiperOrigin-RevId: 380080172
2021-06-17 17:22:20 -07:00

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// Copyright 2020 Google LLC
//
// 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
//
// https://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.
#ifndef PLATFORM_IMPL_WINDOWS_ATOMIC_BOOLEAN_H_
#define PLATFORM_IMPL_WINDOWS_ATOMIC_BOOLEAN_H_
#include "platform/api/atomic_boolean.h"
#include <atomic>
namespace location {
namespace nearby {
namespace windows {
// A boolean value that may be updated atomically.
class AtomicBoolean : public api::AtomicBoolean {
public:
// TODO(b/184975123): replace with real implementation.
~AtomicBoolean() override = default;
// Atomically read and return current value.
bool Get() const override {
// TODO(b/184975123): replace with real implementation.
return atomic_boolean_;
};
// Atomically exchange original value with a new one. Return previous value.
bool Set(bool value) override {
// TODO(b/184975123): replace with real implementation.
bool original = atomic_boolean_;
atomic_boolean_ = value;
return original;
};
private:
std::atomic_bool atomic_boolean_;
};
} // namespace windows
} // namespace nearby
} // namespace location
#endif // PLATFORM_IMPL_WINDOWS_ATOMIC_BOOLEAN_H_