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
|
/*
* Copyright (c) 2018-2020 ARM Limited.
*
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef ARM_COMPUTE_RUNTIME_IMEMORY_REGION_H
#define ARM_COMPUTE_RUNTIME_IMEMORY_REGION_H
#include <cstddef>
#include <memory>
namespace arm_compute
{
/** Memory region interface */
class IMemoryRegion
{
public:
/** Default constructor
*
* @param[in] size Region size
*/
explicit IMemoryRegion(size_t size)
: _size(size)
{
}
/** Virtual Destructor */
virtual ~IMemoryRegion() = default;
/** Extract a sub-region from the memory
*
* @warning Ownership is maintained by the parent memory,
* while a wrapped raw memory region is returned by this function.
* Thus parent memory should not be released before this.
*
*
* @param[in] offset Offset to the region
* @param[in] size Size of the region
*
* @return A wrapped memory sub-region with no ownership of the underlying memory
*/
virtual std::unique_ptr<IMemoryRegion> extract_subregion(size_t offset, size_t size) = 0;
/** Returns the pointer to the allocated data.
*
* @return Pointer to the allocated data
*/
virtual void *buffer() = 0;
/** Returns the pointer to the allocated data.
*
* @return Pointer to the allocated data
*/
virtual const void *buffer() const = 0;
/** Memory region size accessor
*
* @return Memory region size
*/
size_t size() const
{
return _size;
}
/** Sets size of region
*
* @warning This should only be used in correlation with handle
*
* @param[in] size Size to set
*/
void set_size(size_t size)
{
_size = size;
}
protected:
size_t _size;
};
} // namespace arm_compute
#endif /* ARM_COMPUTE_RUNTIME_IMEMORY_REGION_H */
|
