Class Event

extensions/include/cuMat/src/Context.h:452–552

* \brief A simple reference-counted wrapper around cuda events. * This class is not synchronized */

 * This class is not synchronized
 */
class Event
{
	cudaEvent_t event_;
	size_t* counter_;

		void release()
	{
		if ((counter_) && (--(*counter_) == 0))
		{
			delete counter_;
			CUMAT_SAFE_CALL(cudaEventDestroy(event_));
		}
	}

public:
	Event()
		: event_(nullptr)
		, counter_(new size_t(1))
	{
		CUMAT_SAFE_CALL(cudaEventCreate(&event_));
	}

	Event(const Event& rhs)
		: event_(rhs.event_)
		, counter_(rhs.counter_)
	{
		assert(counter_);
		++(*counter_);
	}

	Event(Event&& rhs) noexcept
		: event_(std::move(rhs.event_))
		, counter_(std::move(rhs.counter_))
	{
		rhs.event_ = nullptr;
		rhs.counter_ = nullptr;
	}

	Event& operator=(const Event& rhs)
	{
		release();
		event_ = rhs.event_;
		counter_ = rhs.counter_;
		assert(counter_);
		++(*counter_);
		return *this;
	}

	Event& operator=(Event&& rhs) noexcept
	{
		release();
		event_ = std::move(rhs.event_);
		counter_ = std::move(rhs.counter_);
		assert(counter_);
		rhs.event_ = nullptr;
		rhs.counter_ = nullptr;
		return *this;
	}