1 /*
2 * Copyright (c) 2017-2020 Arm Limited.
3 *
4 * SPDX-License-Identifier: MIT
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to
8 * deal in the Software without restriction, including without limitation the
9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
10 * sell copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in all
14 * copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 */
24 #include "arm_compute/runtime/OffsetLifetimeManager.h"
25
26 #include "arm_compute/core/Error.h"
27 #include "arm_compute/runtime/IAllocator.h"
28 #include "arm_compute/runtime/IMemoryGroup.h"
29 #include "arm_compute/runtime/OffsetMemoryPool.h"
30 #include "support/MemorySupport.h"
31
32 #include <algorithm>
33 #include <cmath>
34 #include <map>
35 #include <vector>
36
37 namespace arm_compute
38 {
39 namespace
40 {
align_offset(size_t offset,size_t alignment)41 size_t align_offset(size_t offset, size_t alignment)
42 {
43 const size_t remainder = (alignment != 0U) ? offset % alignment : 0U;
44 return (remainder != 0U) ? offset + (alignment - remainder) : offset;
45 }
46 } // namespace
OffsetLifetimeManager()47 OffsetLifetimeManager::OffsetLifetimeManager()
48 : _blob(0)
49 {
50 }
51
info() const52 const OffsetLifetimeManager::info_type &OffsetLifetimeManager::info() const
53 {
54 return _blob;
55 }
56
create_pool(IAllocator * allocator)57 std::unique_ptr<IMemoryPool> OffsetLifetimeManager::create_pool(IAllocator *allocator)
58 {
59 ARM_COMPUTE_ERROR_ON(allocator == nullptr);
60 return support::cpp14::make_unique<OffsetMemoryPool>(allocator, _blob);
61 }
62
mapping_type() const63 MappingType OffsetLifetimeManager::mapping_type() const
64 {
65 return MappingType::OFFSETS;
66 }
67
update_blobs_and_mappings()68 void OffsetLifetimeManager::update_blobs_and_mappings()
69 {
70 ARM_COMPUTE_ERROR_ON(!are_all_finalized());
71 ARM_COMPUTE_ERROR_ON(_active_group == nullptr);
72
73 // Update blob size
74 size_t max_aggregated_size = 0;
75 std::for_each(std::begin(_free_blobs), std::end(_free_blobs), [&](const Blob & b)
76 {
77 max_aggregated_size += b.max_size;
78 _blob.alignment = std::max(_blob.alignment, b.max_alignment);
79 });
80 max_aggregated_size += _free_blobs.size() * _blob.alignment;
81 _blob.owners = std::max(_blob.owners, _free_blobs.size());
82 _blob.size = std::max(_blob.size, max_aggregated_size);
83
84 // Calculate group mappings
85 auto &group_mappings = _active_group->mappings();
86 size_t offset = 0;
87 for(auto &free_blob : _free_blobs)
88 {
89 for(auto &bound_element_id : free_blob.bound_elements)
90 {
91 ARM_COMPUTE_ERROR_ON(_active_elements.find(bound_element_id) == std::end(_active_elements));
92 Element &bound_element = _active_elements[bound_element_id];
93 group_mappings[bound_element.handle] = offset;
94 }
95 offset += free_blob.max_size;
96 offset = align_offset(offset, _blob.alignment);
97 ARM_COMPUTE_ERROR_ON(offset > _blob.size);
98 }
99 }
100 } // namespace arm_compute
101