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
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
/*
* Copyright 2008-2021 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/temporary_array.h>
#include <thrust/distance.h>
#include <thrust/system/detail/generic/select_system.h>
#include <thrust/detail/type_traits.h>
THRUST_NAMESPACE_BEGIN
namespace detail
{
namespace temporary_array_detail
{
template<typename T> struct avoid_initialization : thrust::detail::has_trivial_copy_constructor<T> {};
template<typename T, typename TemporaryArray, typename Size>
__host__ __device__
typename thrust::detail::enable_if<
avoid_initialization<T>::value
>::type
construct_values(TemporaryArray &,
Size)
{
// avoid the overhead of initialization
} // end construct_values()
template<typename T, typename TemporaryArray, typename Size>
__host__ __device__
typename thrust::detail::disable_if<
avoid_initialization<T>::value
>::type
construct_values(TemporaryArray &a,
Size n)
{
a.default_construct_n(a.begin(), n);
} // end construct_values()
} // end temporary_array_detail
template<typename T, typename System>
__host__ __device__
temporary_array<T,System>
::temporary_array(thrust::execution_policy<System> &system)
:super_t(alloc_type(temporary_allocator<T,System>(system)))
{
} // end temporary_array::temporary_array()
template<typename T, typename System>
__host__ __device__
temporary_array<T,System>
::temporary_array(thrust::execution_policy<System> &system, size_type n)
:super_t(n, alloc_type(temporary_allocator<T,System>(system)))
{
temporary_array_detail::construct_values<T>(*this, n);
} // end temporary_array::temporary_array()
template<typename T, typename System>
__host__ __device__
temporary_array<T,System>
::temporary_array(int, thrust::execution_policy<System> &system, size_type n)
:super_t(n, alloc_type(temporary_allocator<T,System>(system)))
{
// avoid initialization
;
} // end temporary_array::temporary_array()
template<typename T, typename System>
template<typename InputIterator>
__host__ __device__
temporary_array<T,System>
::temporary_array(thrust::execution_policy<System> &system,
InputIterator first,
size_type n)
: super_t(alloc_type(temporary_allocator<T,System>(system)))
{
super_t::allocate(n);
super_t::uninitialized_copy_n(system, first, n, super_t::begin());
} // end temporary_array::temporary_array()
template<typename T, typename System>
template<typename InputIterator, typename InputSystem>
__host__ __device__
temporary_array<T,System>
::temporary_array(thrust::execution_policy<System> &system,
thrust::execution_policy<InputSystem> &input_system,
InputIterator first,
size_type n)
: super_t(alloc_type(temporary_allocator<T,System>(system)))
{
super_t::allocate(n);
super_t::uninitialized_copy_n(input_system, first, n, super_t::begin());
} // end temporary_array::temporary_array()
template<typename T, typename System>
template<typename InputIterator>
__host__ __device__
temporary_array<T,System>
::temporary_array(thrust::execution_policy<System> &system,
InputIterator first,
InputIterator last)
: super_t(alloc_type(temporary_allocator<T,System>(system)))
{
super_t::allocate(thrust::distance(first,last));
super_t::uninitialized_copy(system, first, last, super_t::begin());
} // end temporary_array::temporary_array()
template<typename T, typename System>
template<typename InputSystem, typename InputIterator>
__host__ __device__
temporary_array<T,System>
::temporary_array(thrust::execution_policy<System> &system,
thrust::execution_policy<InputSystem> &input_system,
InputIterator first,
InputIterator last)
: super_t(alloc_type(temporary_allocator<T,System>(system)))
{
super_t::allocate(thrust::distance(first,last));
super_t::uninitialized_copy(input_system, first, last, super_t::begin());
} // end temporary_array::temporary_array()
template<typename T, typename System>
__host__ __device__
temporary_array<T,System>
::~temporary_array()
{
// note that super_t::destroy will ignore trivial destructors automatically
super_t::destroy(super_t::begin(), super_t::end());
} // end temporary_array::~temporary_array()
} // end detail
THRUST_NAMESPACE_END
|
