1 /* 2 * Copyright (c) 2019, 2021 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 25 #ifndef ARM_COMPUTE_IWEIGHTSMANAGER_H 26 #define ARM_COMPUTE_IWEIGHTSMANAGER_H 27 28 #include "arm_compute/core/ITensor.h" 29 #include "arm_compute/runtime/ITransformWeights.h" 30 31 #include <map> 32 33 namespace arm_compute 34 { 35 /** Weights manager interface to handle weights transformations */ 36 class IWeightsManager 37 { 38 public: 39 /** Constructor */ 40 IWeightsManager(); 41 /** Default Destructor */ 42 virtual ~IWeightsManager() = default; 43 /** Prevent instances of this class to be copy constructed */ 44 IWeightsManager(const IWeightsManager &) = delete; 45 /** Prevent instances of this class to be copied */ 46 IWeightsManager &operator=(const IWeightsManager &) = delete; 47 /** Allow instances of this class to be move constructed */ 48 IWeightsManager(IWeightsManager &&) = default; 49 /** Allow instances of this class to be moved */ 50 IWeightsManager &operator=(IWeightsManager &&) = default; 51 52 /** Start managing a weights tensor 53 * 54 * @param[in] weights Pointer to the weights tensor to be managed 55 * @param[in] parent Parent node in case where the weights are coming from a previous reshape function 56 */ 57 void manage(const ITensor *weights, ITransformWeights *parent = nullptr); 58 /** Run the reshape function. 59 * 60 * @param[in] weights Pointer to the weights tensor we want to reshape 61 * @param[in] weights_transform Weights transformation object 62 * 63 * @return The reshaped tensor 64 */ 65 ITensor *run(const ITensor *weights, ITransformWeights *weights_transform); 66 /** Acquire the requested reshape tensor of the selected weights 67 * 68 * @param[in] weights Pointer to the weights tensor to be managed 69 * @param[in] weights_transform Weights transformation object 70 */ 71 ITensor *acquire(const ITensor *weights, ITransformWeights *weights_transform); 72 /** Check if the weights are managed 73 * 74 * @param[in] weights Pointer to the weights tensor we want to check if managed 75 * 76 * @return True if the weights tensor is managed else false 77 */ 78 bool are_weights_managed(const ITensor *weights); 79 /** Release weights refcount and mark as unused if reaches 0 80 * 81 * @param[in] weights Weights to release 82 */ 83 void release(const ITensor *weights); 84 /** Pre-mark the weights as unused. The weights tensor will get marked as unused only when the counter goes to 0 85 * 86 * @param weights Weights to mark unused 87 */ 88 void pre_mark_as_unused(const ITensor *weights); 89 90 private: 91 struct CounterElement 92 { 93 bool is_unused{ false }; 94 std::atomic<int> counter{ 1 }; 95 }; 96 97 private: 98 std::map<const ITensor *, std::vector<ITransformWeights *>> _managed_weights; 99 std::map<const ITensor *, CounterElement> _managed_counter; 100 std::map<const ITensor *, ITransformWeights *> _managed_weights_parents; 101 }; 102 } // arm_compute 103 #endif /*ARM_COMPUTE_IWEIGHTSMANAGER_H */