2 * Copyright (c) 2016, 2017 ARM Limited.
4 * SPDX-License-Identifier: MIT
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:
13 * The above copyright notice and this permission notice shall be included in all
14 * copies or substantial portions of the Software.
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
24 #include "arm_compute/runtime/TensorAllocator.h"
26 #include "arm_compute/core/Coordinates.h"
27 #include "arm_compute/core/Error.h"
28 #include "arm_compute/core/TensorInfo.h"
29 #include "arm_compute/runtime/MemoryGroup.h"
33 using namespace arm_compute;
37 bool validate_subtensor_shape(const TensorInfo &parent_info, const TensorInfo &child_info, const Coordinates &coords)
40 const TensorShape &parent_shape = parent_info.tensor_shape();
41 const TensorShape &child_shape = child_info.tensor_shape();
42 const size_t parent_dims = parent_info.num_dimensions();
43 const size_t child_dims = child_info.num_dimensions();
45 if(child_dims <= parent_dims)
47 for(size_t num_dimensions = child_dims; num_dimensions > 0; --num_dimensions)
49 const size_t child_dim_size = coords[num_dimensions - 1] + child_shape[num_dimensions - 1];
51 if((coords[num_dimensions - 1] < 0) || (child_dim_size > parent_shape[num_dimensions - 1]))
67 TensorAllocator::TensorAllocator(Tensor *owner)
68 : _associated_memory_group(nullptr), _buffer(nullptr), _owner(owner)
72 TensorAllocator::~TensorAllocator()
74 if((_associated_memory_group == nullptr) && (_buffer != nullptr))
78 info().set_is_resizable(true);
82 TensorAllocator::TensorAllocator(TensorAllocator &&o) noexcept
83 : ITensorAllocator(std::move(o)),
84 _associated_memory_group(o._associated_memory_group),
88 o._associated_memory_group = nullptr;
93 TensorAllocator &TensorAllocator::operator=(TensorAllocator &&o) noexcept
97 _associated_memory_group = o._associated_memory_group;
98 o._associated_memory_group = nullptr;
106 ITensorAllocator::operator=(std::move(o));
111 void TensorAllocator::init(const TensorAllocator &allocator, const Coordinates &coords, TensorInfo sub_info)
114 const TensorInfo parent_info = allocator.info();
116 // Check if coordinates and new shape are within the parent tensor
117 ARM_COMPUTE_ERROR_ON(!validate_subtensor_shape(parent_info, sub_info, coords));
118 ARM_COMPUTE_UNUSED(validate_subtensor_shape);
120 // Copy pointer to buffer
121 _buffer = allocator._buffer;
123 // Init tensor info with new dimensions
124 size_t total_size = parent_info.offset_element_in_bytes(coords) + sub_info.total_size() - sub_info.offset_first_element_in_bytes();
125 sub_info.init(sub_info.tensor_shape(), sub_info.format(), parent_info.strides_in_bytes(), parent_info.offset_element_in_bytes(coords), total_size);
131 uint8_t *TensorAllocator::data() const
136 void TensorAllocator::allocate()
138 ARM_COMPUTE_ERROR_ON(_buffer != nullptr);
139 if(_associated_memory_group == nullptr)
141 _buffer = new uint8_t[info().total_size()]();
145 _associated_memory_group->finalize_memory(_owner, reinterpret_cast<void **>(&_buffer), info().total_size());
147 info().set_is_resizable(false);
150 void TensorAllocator::free()
152 if((_associated_memory_group == nullptr) && (_buffer != nullptr))
156 info().set_is_resizable(true);
160 void TensorAllocator::set_associated_memory_group(MemoryGroup *associated_memory_group)
162 ARM_COMPUTE_ERROR_ON(associated_memory_group == nullptr);
163 ARM_COMPUTE_ERROR_ON(_associated_memory_group != nullptr);
164 ARM_COMPUTE_ERROR_ON(_buffer != nullptr);
165 _associated_memory_group = associated_memory_group;
168 uint8_t *TensorAllocator::lock()
173 void TensorAllocator::unlock()