2 * Copyright (c) 2016, 2017 ARM Limited.
4 * SPDX-License-Identifier: MIT
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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
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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"
30 #include "support/ToolchainSupport.h"
34 using namespace arm_compute;
38 bool validate_subtensor_shape(const TensorInfo &parent_info, const TensorInfo &child_info, const Coordinates &coords)
41 const TensorShape &parent_shape = parent_info.tensor_shape();
42 const TensorShape &child_shape = child_info.tensor_shape();
43 const size_t parent_dims = parent_info.num_dimensions();
44 const size_t child_dims = child_info.num_dimensions();
46 if(child_dims <= parent_dims)
48 for(size_t num_dimensions = child_dims; num_dimensions > 0; --num_dimensions)
50 const size_t child_dim_size = coords[num_dimensions - 1] + child_shape[num_dimensions - 1];
52 if((coords[num_dimensions - 1] < 0) || (child_dim_size > parent_shape[num_dimensions - 1]))
68 TensorAllocator::TensorAllocator(Tensor *owner)
69 : _associated_memory_group(nullptr), _memory(), _owner(owner)
73 TensorAllocator::~TensorAllocator()
75 info().set_is_resizable(true);
78 TensorAllocator::TensorAllocator(TensorAllocator &&o) noexcept
79 : ITensorAllocator(std::move(o)),
80 _associated_memory_group(o._associated_memory_group),
81 _memory(std::move(o._memory)),
84 o._associated_memory_group = nullptr;
89 TensorAllocator &TensorAllocator::operator=(TensorAllocator &&o) noexcept
93 _associated_memory_group = o._associated_memory_group;
94 o._associated_memory_group = nullptr;
96 _memory = std::move(o._memory);
102 ITensorAllocator::operator=(std::move(o));
107 void TensorAllocator::init(const TensorAllocator &allocator, const Coordinates &coords, TensorInfo sub_info)
110 const TensorInfo parent_info = allocator.info();
112 // Check if coordinates and new shape are within the parent tensor
113 ARM_COMPUTE_ERROR_ON(!validate_subtensor_shape(parent_info, sub_info, coords));
114 ARM_COMPUTE_UNUSED(validate_subtensor_shape);
116 // Copy pointer to buffer
117 _memory = Memory(allocator._memory.buffer());
119 // Init tensor info with new dimensions
120 size_t total_size = parent_info.offset_element_in_bytes(coords) + sub_info.total_size() - sub_info.offset_first_element_in_bytes();
121 sub_info.init(sub_info.tensor_shape(), sub_info.format(), parent_info.strides_in_bytes(), parent_info.offset_element_in_bytes(coords), total_size);
127 uint8_t *TensorAllocator::data() const
129 return _memory.buffer();
132 void TensorAllocator::allocate()
134 ARM_COMPUTE_ERROR_ON(_memory.buffer() != nullptr);
135 if(_associated_memory_group == nullptr)
137 _memory = Memory(std::shared_ptr<uint8_t>(new uint8_t[info().total_size()](), [](uint8_t *ptr)
144 _associated_memory_group->finalize_memory(_owner, reinterpret_cast<void **>(_memory.handle()), info().total_size());
146 info().set_is_resizable(false);
149 void TensorAllocator::free()
152 info().set_is_resizable(true);
155 arm_compute::Status TensorAllocator::import_memory(Memory memory)
157 ARM_COMPUTE_RETURN_ERROR_ON(memory.buffer() == nullptr);
158 ARM_COMPUTE_RETURN_ERROR_ON(_associated_memory_group != nullptr);
160 info().set_is_resizable(false);
165 void TensorAllocator::set_associated_memory_group(MemoryGroup *associated_memory_group)
167 ARM_COMPUTE_ERROR_ON(associated_memory_group == nullptr);
168 ARM_COMPUTE_ERROR_ON(_associated_memory_group != nullptr);
169 ARM_COMPUTE_ERROR_ON(_memory.buffer() != nullptr);
170 _associated_memory_group = associated_memory_group;
173 uint8_t *TensorAllocator::lock()
175 return _memory.buffer();
178 void TensorAllocator::unlock()