nearby: snapshot as of cl/296436629

Signed-off-by: Alexey Polyudov <apolyudov@google.com>
Change-Id: I2cf5bf225b76f4c1541954651f3a7544a14e0cec

cpp/platform/api/atomic_reference.h

@@ -0,0 +1,22 @@
+#ifndef PLATFORM_API_ATOMIC_REFERENCE_H_
+#define PLATFORM_API_ATOMIC_REFERENCE_H_
+
+namespace location {
+namespace nearby {
+
+// An object reference that may be updated atomically.
+//
+// https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/AtomicReference.html
+template <typename T>
+class AtomicReference {
+ public:
+  virtual ~AtomicReference() {}
+
+  virtual T get() = 0;
+  virtual void set(T value) = 0;
+};
+
+}  // namespace nearby
+}  // namespace location
+
+#endif  // PLATFORM_API_ATOMIC_REFERENCE_H_