Line data    Source code

       1              : /**
       2              :  * Copyright (c) 2025 Huawei Technologies Co., Ltd.
       3              :  * This program is free software, you can redistribute it and/or modify it under the terms and conditions of
       4              :  * CANN Open Software License Agreement Version 2.0 (the "License").
       5              :  * Please refer to the License for details. You may not use this file except in compliance with the License.
       6              :  * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED,
       7              :  * INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.
       8              :  * See LICENSE in the root of the software repository for the full text of the License.
       9              :  */
      10              : 
      11              : #pragma once
      12              : 
      13              : #include <mutex>
      14              : #include <string>
      15              : #include <memory>
      16              : #include <unordered_map>
      17              : #include "hccl_common.h"
      18              : #include "mem_device_pub.h"
      19              : 
      20              : namespace hccl {
      21              : struct ShareCCLMem {
      22              :     DeviceMem cclBuffer =  DeviceMem();
      23              :     uint64_t refCount{0};  // 引用计数
      24              : };
      25              : 
      26              :  // 进程粒度的内存管理单例
      27              : class ShareCCLbufferMgr {
      28              : public:
      29              :     static ShareCCLbufferMgr& GetInstance(); // 获取单例
      30          390 :     ~ShareCCLbufferMgr() = default;
      31              : 
      32              :     HcclResult RecordShareCCLbuffer(const std::string &bufferName);
      33              :     HcclResult CreateShareCCLbuffer(const std::string &bufferName, u64 bufferSize, DeviceMem &cclBuffer);
      34              :     HcclResult FreeShareCCLbuffer(const std::string &bufferName);
      35              :     HcclResult CheckCCLbuffConflict(const std::string &bufferName, s32 streamId);
      36              : 
      37              : private:
      38              :     HcclResult CreateDevMem(u64 size, DeviceMem &buffer);
      39              : 
      40              :     std::mutex lock_;   // 锁保证多线程访问安全
      41              :     u64 shareBufferSize_ = 0;    // 共享buffer大小
      42              :     std::unordered_map<std::string, s32> streamIdMap_;  // bufferName与streamID映射关系
      43              :     std::unordered_map<std::string, ShareCCLMem> memRecord_;  // 记录内存的次数
      44              : };
      45              : }