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/*
* Copyright 2008-2013 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>
#include <thrust/detail/allocator/tagged_allocator.h>
#include <thrust/detail/allocator/allocator_traits.h>
#include <thrust/pair.h>
#include <thrust/memory.h>
#include <thrust/detail/execution_policy.h>
THRUST_NAMESPACE_BEGIN
namespace detail
{
// XXX the pointer parameter given to tagged_allocator should be related to
// the type of the expression get_temporary_buffer(system, n).first
// without decltype, compromise on pointer<T,System>
template<typename T, typename System>
class temporary_allocator
: public thrust::detail::tagged_allocator<
T, System, thrust::pointer<T,System>
>
{
private:
typedef thrust::detail::tagged_allocator<
T, System, thrust::pointer<T,System>
> super_t;
System &m_system;
public:
typedef typename super_t::pointer pointer;
typedef typename super_t::size_type size_type;
inline __host__ __device__
temporary_allocator(const temporary_allocator &other) :
super_t(),
m_system(other.m_system)
{}
inline __host__ __device__
explicit temporary_allocator(thrust::execution_policy<System> &system) :
super_t(),
m_system(thrust::detail::derived_cast(system))
{}
__host__ __device__
pointer allocate(size_type cnt);
__host__ __device__
void deallocate(pointer p, size_type n);
__host__ __device__
inline System &system()
{
return m_system;
} // end system()
private:
typedef thrust::pair<pointer, size_type> pointer_and_size;
}; // end temporary_allocator
} // end detail
THRUST_NAMESPACE_END
#include <thrust/detail/allocator/temporary_allocator.inl>
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