nearby sdk refactor

PiperOrigin-RevId: 425434260

internal/platform/implementation/windows/atomic_boolean.h

@@ -0,0 +1,45 @@
+// 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 <atomic>
+
+#include "internal/platform/implementation/atomic_boolean.h"
+
+namespace location {
+namespace nearby {
+namespace windows {
+
+// A boolean value that may be updated atomically.
+class AtomicBoolean : public api::AtomicBoolean {
+ public:
+  ~AtomicBoolean() override = default;
+
+  // Atomically read and return current value.
+  bool Get() const override { return atomic_boolean_; };
+
+  // Atomically exchange original value with a new one. Return previous value.
+  bool Set(bool value) override { return atomic_boolean_.exchange(value); };
+
+ private:
+  std::atomic_bool atomic_boolean_;
+};
+
+}  // namespace windows
+}  // namespace nearby
+}  // namespace location
+
+#endif  // PLATFORM_IMPL_WINDOWS_ATOMIC_BOOLEAN_H_