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
|
/*
* Copyright 2008-2018 NVIDIA Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in ctbbliance 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 thrust/system/tbb/memory.h
* \brief Managing memory associated with Thrust's TBB system.
*/
#pragma once
#include <thrust/detail/config.h>
#include <thrust/system/tbb/memory_resource.h>
#include <thrust/memory.h>
#include <thrust/detail/type_traits.h>
#include <thrust/mr/allocator.h>
#include <ostream>
THRUST_NAMESPACE_BEGIN
namespace system
{
namespace tbb
{
/*! Allocates an area of memory available to Thrust's <tt>tbb</tt> system.
* \param n Number of bytes to allocate.
* \return A <tt>tbb::pointer<void></tt> pointing to the beginning of the newly
* allocated memory. A null <tt>tbb::pointer<void></tt> is returned if
* an error occurs.
* \note The <tt>tbb::pointer<void></tt> returned by this function must be
* deallocated with \p tbb::free.
* \see tbb::free
* \see std::malloc
*/
inline pointer<void> malloc(std::size_t n);
/*! Allocates a typed area of memory available to Thrust's <tt>tbb</tt> system.
* \param n Number of elements to allocate.
* \return A <tt>tbb::pointer<T></tt> pointing to the beginning of the newly
* allocated memory. A null <tt>tbb::pointer<T></tt> is returned if
* an error occurs.
* \note The <tt>tbb::pointer<T></tt> returned by this function must be
* deallocated with \p tbb::free.
* \see tbb::free
* \see std::malloc
*/
template<typename T>
inline pointer<T> malloc(std::size_t n);
/*! Deallocates an area of memory previously allocated by <tt>tbb::malloc</tt>.
* \param ptr A <tt>tbb::pointer<void></tt> pointing to the beginning of an area
* of memory previously allocated with <tt>tbb::malloc</tt>.
* \see tbb::malloc
* \see std::free
*/
inline void free(pointer<void> ptr);
/*! \p tbb::allocator is the default allocator used by the \p tbb system's
* containers such as <tt>tbb::vector</tt> if no user-specified allocator is
* provided. \p tbb::allocator allocates (deallocates) storage with \p
* tbb::malloc (\p tbb::free).
*/
template<typename T>
using allocator = thrust::mr::stateless_resource_allocator<
T, thrust::system::tbb::memory_resource
>;
/*! \p tbb::universal_allocator allocates memory that can be used by the \p tbb
* system and host systems.
*/
template<typename T>
using universal_allocator = thrust::mr::stateless_resource_allocator<
T, thrust::system::tbb::universal_memory_resource
>;
}} // namespace system::tbb
/*! \namespace thrust::tbb
* \brief \p thrust::tbb is a top-level alias for thrust::system::tbb.
*/
namespace tbb
{
using thrust::system::tbb::malloc;
using thrust::system::tbb::free;
using thrust::system::tbb::allocator;
using thrust::system::tbb::universal_allocator;
} // namsespace tbb
THRUST_NAMESPACE_END
#include <thrust/system/tbb/detail/memory.inl>
|
