1 /** 2 * Copyright 2021 Huawei Technologies Co., Ltd 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef MINDSPORE_LITE_SRC_RUNTIME_RUNTIME_ALLOCATOR_H_ 18 #define MINDSPORE_LITE_SRC_RUNTIME_RUNTIME_ALLOCATOR_H_ 19 20 #include <memory> 21 #include <map> 22 #include <unordered_map> 23 #include "include/api/allocator.h" 24 #include "include/errorcode.h" 25 #include "src/tensor.h" 26 27 namespace mindspore { 28 class RuntimeAllocator : public Allocator { 29 public: 30 explicit RuntimeAllocator(size_t aligned_size = 32); 31 ~RuntimeAllocator() override; 32 33 public: Malloc(size_t size)34 void *Malloc(size_t size) override { return nullptr; } Free(void * ptr)35 void Free(void *ptr) override { return; } RefCount(void * ptr)36 int RefCount(void *ptr) override { return (ptr == nullptr) ? RUNTIME_REFCOUNT : 0; } SetRefCount(void * ptr,int ref_count)37 int SetRefCount(void *ptr, int ref_count) override { return 0; } IncRefCount(void * ptr,int ref_count)38 int IncRefCount(void *ptr, int ref_count) override { return 0; } DecRefCount(void * ptr,int ref_count)39 int DecRefCount(void *ptr, int ref_count) override { return 0; } 40 41 public: 42 void SetDataOffset(lite::Tensor *tensor, size_t offset); 43 void MallocTensorData(lite::Tensor *tensor); 44 void FreeTensorData(lite::Tensor *tensor); 45 void *MallocOptData(); GetOffsetMap()46 const std::unordered_map<lite::Tensor *, size_t> &GetOffsetMap() const { return offset_map_; } 47 void Clear(AllocatorPtr default_allocator); 48 49 private: 50 size_t FindMinFree(size_t size); 51 52 private: 53 void *data_ = nullptr; 54 size_t total_size_ = 0; 55 std::unordered_map<lite::Tensor *, size_t> offset_map_; 56 std::map<size_t, size_t> free_list_; /* offset, size */ 57 std::map<size_t, size_t> used_list_; /* offset, size */ 58 }; 59 60 using RuntimeAllocatorPtr = std::shared_ptr<RuntimeAllocator>; 61 } // namespace mindspore 62 63 #endif // MINDSPORE_LITE_SRC_RUNTIME_RUNTIME_ALLOCATOR_H_ 64