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/*
* Copyright 2008-2018 NVIDIA Corporation
*
* 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
*
* http://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.
*/
/*! \file device_make_unique.h
* \brief A factory function for creating `unique_ptr`s to device objects.
*/
#pragma once
#include <thrust/detail/config.h>
#if defined(_CCCL_IMPLICIT_SYSTEM_HEADER_GCC)
# pragma GCC system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_CLANG)
# pragma clang system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_MSVC)
# pragma system_header
#endif // no system header
#include <thrust/detail/cpp11_required.h>
#if THRUST_CPP_DIALECT >= 2011
#include <thrust/allocate_unique.h>
#include <thrust/device_new.h>
#include <thrust/device_ptr.h>
#include <thrust/device_allocator.h>
#include <thrust/detail/type_deduction.h>
THRUST_NAMESPACE_BEGIN
///////////////////////////////////////////////////////////////////////////////
template <typename T, typename... Args>
__host__
auto device_make_unique(Args&&... args)
THRUST_TRAILING_RETURN(decltype(
uninitialized_allocate_unique<T>(device_allocator<T>{})
))
{
#if !defined(THRUST_DOXYGEN) // This causes Doxygen to choke for some reason.
// FIXME: This is crude - we construct an unnecessary T on the host for
// `device_new`. We need a proper dispatched `construct` algorithm to
// do this properly.
auto p = uninitialized_allocate_unique<T>(device_allocator<T>{});
device_new<T>(p.get(), T(THRUST_FWD(args)...));
return p;
#endif
}
///////////////////////////////////////////////////////////////////////////////
THRUST_NAMESPACE_END
#endif // THRUST_CPP_DIALECT >= 2011
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