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
31 #include <algorithm>
32 #include <cmath>
33 #include <map>
34 #include <vector>
35
36 namespace arm_compute
37 {
38 namespace
39 {
align_offset(size_t offset,size_t alignment)40 size_t align_offset(size_t offset, size_t alignment)
41 {
42 const size_t remainder = (alignment != 0U) ? offset % alignment : 0U;
43 return (remainder != 0U) ? offset + (alignment - remainder) : offset;
44 }
45 } // namespace
OffsetLifetimeManager()46 OffsetLifetimeManager::OffsetLifetimeManager()
47 : _blob(0)
48 {
49 }
50
info() const51 const OffsetLifetimeManager::info_type &OffsetLifetimeManager::info() const
52 {
53 return _blob;
54 }
55
create_pool(IAllocator * allocator)56 std::unique_ptr<IMemoryPool> OffsetLifetimeManager::create_pool(IAllocator *allocator)
57 {
58 ARM_COMPUTE_ERROR_ON(allocator == nullptr);
59 return std::make_unique<OffsetMemoryPool>(allocator, _blob);
60 }
61
mapping_type() const62 MappingType OffsetLifetimeManager::mapping_type() const
63 {
64 return MappingType::OFFSETS;
65 }
66
update_blobs_and_mappings()67 void OffsetLifetimeManager::update_blobs_and_mappings()
68 {
69 ARM_COMPUTE_ERROR_ON(!are_all_finalized());
70 ARM_COMPUTE_ERROR_ON(_active_group == nullptr);
71
72 // Update blob size
73 size_t max_aggregated_size = 0;
74 std::for_each(std::begin(_free_blobs), std::end(_free_blobs), [&](const Blob & b)
75 {
76 max_aggregated_size += b.max_size;
77 _blob.alignment = std::max(_blob.alignment, b.max_alignment);
78 });
79 max_aggregated_size += _free_blobs.size() * _blob.alignment;
80 _blob.owners = std::max(_blob.owners, _free_blobs.size());
81 _blob.size = std::max(_blob.size, max_aggregated_size);
82
83 // Calculate group mappings
84 auto &group_mappings = _active_group->mappings();
85 size_t offset = 0;
86 for(auto &free_blob : _free_blobs)
87 {
88 for(auto &bound_element_id : free_blob.bound_elements)
89 {
90 ARM_COMPUTE_ERROR_ON(_active_elements.find(bound_element_id) == std::end(_active_elements));
91 Element &bound_element = _active_elements[bound_element_id];
92 group_mappings[bound_element.handle] = offset;
93 }
94 offset += free_blob.max_size;
95 offset = align_offset(offset, _blob.alignment);
96 ARM_COMPUTE_ERROR_ON(offset > _blob.size);
97 }
98 }
99 } // namespace arm_compute
100