Files
nearby/cpp/platform_v2/public/atomic_reference.h
T
Alexey Polyudov ae1c427b99 nearby: snapshot of cl/313536507
Signed-off-by: Alexey Polyudov <apolyudov@google.com>
Change-Id: I8936b527079074d5c3af5531b9245063767cc4a7
2020-05-28 00:03:22 -07:00

41 lines
1.3 KiB
C++

#ifndef PLATFORM_V2_PUBLIC_ATOMIC_REFERENCE_H_
#define PLATFORM_V2_PUBLIC_ATOMIC_REFERENCE_H_
#include <memory>
#include "platform_v2/api/atomic_reference.h"
#include "platform_v2/api/platform.h"
#include "absl/types/any.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 final : public api::AtomicReference<T> {
public:
using Platform = api::ImplementationPlatform;
explicit AtomicReference(const T& value)
: impl_(Platform::CreateAtomicReferenceAny(value)) {}
explicit AtomicReference(T&& value)
: impl_(Platform::CreateAtomicReferenceAny(std::move(value))) {}
~AtomicReference() override = default;
AtomicReference(AtomicReference&&) = default;
AtomicReference& operator=(AtomicReference&&) = default;
T Get() const& override { return absl::any_cast<T>(impl_->Get()); }
T Get() && override { return absl::any_cast<T>(std::move(impl_->Get())); }
void Set(const T& value) override { impl_->Set(absl::any(value)); }
void Set(T&& value) override { impl_->Set(absl::any(value)); }
private:
std::unique_ptr<api::AtomicReference<absl::any>> impl_;
};
} // namespace nearby
} // namespace location
#endif // PLATFORM_V2_PUBLIC_ATOMIC_REFERENCE_H_