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#ifndef HeterogeneousCore_AlpakaCore_interface_alpaka_EDGetToken_h
#define HeterogeneousCore_AlpakaCore_interface_alpaka_EDGetToken_h
#include "DataFormats/Common/interface/DeviceProduct.h"
#include "FWCore/Utilities/interface/EDGetToken.h"
#include "HeterogeneousCore/AlpakaCore/interface/alpaka/DeviceProductType.h"
#include "HeterogeneousCore/AlpakaInterface/interface/config.h"
namespace ALPAKA_ACCELERATOR_NAMESPACE::device {
class Event;
/**
* The device::EDGetToken is similar to edm::EDGetTokenT, but is
* intended for Event data products in the device memory space
* defined by the backend (i.e. ALPAKA_ACCELERATOR_NAMESPACE). It
* can be used only to get data from a device::Event.
*
* A specific token class is motivated with
* - enforce stronger the type-deducing consumes(). Consumes() with
* explicit type will fail anyway in general, but succeeds on one
* of the backends. With a specific token type the explicit-type
* consumes() would fail always.
*- to avoid using device::EDGetToken with edm::Event
*/
template <typename TProduct>
class EDGetToken {
using ProductType = detail::DeviceProductType<TProduct>;
public:
constexpr EDGetToken() = default;
template <typename TAdapter>
constexpr EDGetToken(TAdapter&& iAdapter) : token_(std::forward<TAdapter>(iAdapter)) {}
private:
friend class Event;
auto const& underlyingToken() const { return token_; }
edm::EDGetTokenT<ProductType> token_;
};
} // namespace ALPAKA_ACCELERATOR_NAMESPACE::device
#endif
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