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/*
* Copyright 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.
*/
#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/type_traits/pointer_traits.h>
#include <thrust/mr/memory_resource.h>
#include <thrust/mr/validator.h>
THRUST_NAMESPACE_BEGIN
namespace mr
{
template<typename Upstream, typename Pointer>
class fancy_pointer_resource final : public memory_resource<Pointer>, private validator<Upstream>
{
public:
fancy_pointer_resource() : m_upstream(get_global_resource<Upstream>())
{
}
fancy_pointer_resource(Upstream * upstream) : m_upstream(upstream)
{
}
THRUST_NODISCARD
virtual Pointer do_allocate(std::size_t bytes, std::size_t alignment = THRUST_MR_DEFAULT_ALIGNMENT) override
{
return static_cast<Pointer>(m_upstream->do_allocate(bytes, alignment));
}
virtual void do_deallocate(Pointer p, std::size_t bytes, std::size_t alignment) override
{
return m_upstream->do_deallocate(
static_cast<typename Upstream::pointer>(
thrust::detail::pointer_traits<Pointer>::get(p)),
bytes, alignment);
}
private:
Upstream * m_upstream;
};
} // end mr
THRUST_NAMESPACE_END
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