1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
/*
* Copyright 2008-2009 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.
*/
#include <memory>
#include <thrust/device_allocator.h>
#include <thrust/iterator/iterator_traits.h>
#if THRUST_VERSION >= 100600
#include <thrust/device_malloc_allocator.h>
#endif
namespace cusp
{
namespace detail
{
template <typename MemorySpace1, typename MemorySpace2>
struct minimum_space_impl {};
template <typename MemorySpace>
struct minimum_space_impl<MemorySpace,MemorySpace> { typedef MemorySpace type; };
template <typename MemorySpace>
struct minimum_space_impl<any_memory,MemorySpace> { typedef MemorySpace type; };
template <typename MemorySpace>
struct minimum_space_impl<MemorySpace,any_memory> { typedef MemorySpace type; };
template <>
struct minimum_space_impl<any_memory,any_memory> { typedef any_memory type; };
} // end namespace detail
template<typename T, typename MemorySpace>
struct default_memory_allocator
: thrust::detail::eval_if<
thrust::detail::is_convertible<MemorySpace, host_memory>::value,
thrust::detail::identity_< std::allocator<T> >,
// XXX add backend-specific allocators here?
thrust::detail::eval_if<
thrust::detail::is_convertible<MemorySpace, device_memory>::value,
thrust::detail::identity_< thrust::device_malloc_allocator<T> >,
thrust::detail::identity_< MemorySpace >
>
>
{};
// TODO replace this with Thrust's minimum_space in 1.4
template <typename MemorySpace1, typename MemorySpace2, typename MemorySpace3>
struct minimum_space { typedef typename detail::minimum_space_impl< typename detail::minimum_space_impl<MemorySpace1,MemorySpace2>::type, MemorySpace3>::type type; };
} // end namespace cusp
|
