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44 lines
1.7 KiB
44 lines
1.7 KiB
/**
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* Copyright 2019-2020 Huawei Technologies Co., Ltd
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef GE_GRAPH_MANAGER_BLOCK_MEMORY_H_
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#define GE_GRAPH_MANAGER_BLOCK_MEMORY_H_
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namespace ge {
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struct Block;
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typedef bool (*Comparison)(const Block *, const Block *);
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using BlockBin = std::set<Block *, Comparison>;
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struct Block {
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uint32_t device_id; // npu device id
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size_t size; // block size in bytes
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BlockBin *bin; // owning block bin
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uint8_t *ptr; // memory address
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bool allocated; // in-use flag
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Block *prev; // prev block if split from a larger allocation
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Block *next; // next block if split from a larger allocation
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Block(uint32_t device, size_t size, BlockBin *bin, uint8_t *ptr)
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: device_id(device), size(size), bin(bin), ptr(ptr), allocated(false), prev(nullptr), next(nullptr) {}
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// constructor for search key
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Block(uint32_t device, size_t size, uint8_t *ptr)
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: device_id(device), size(size), bin(nullptr), ptr(ptr), allocated(false), prev(nullptr), next(nullptr) {}
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bool IsSplit() const { return (prev != nullptr) || (next != nullptr); }
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};
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} // namespace ge
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#endif // GE_GRAPH_MANAGER_BLOCK_MEMORY_H_
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