LCOV - code coverage report
Current view: top level - legacy/ascend910/framework/device/framework - aicpu_zero_copy_exchanger.h (source / functions) Coverage Total Hit
Test: coverage.info Lines: 0.0 % 2 0
Test Date: 2026-07-28 12:11:00 Functions: 0.0 % 1 0

            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              : #ifndef __AICPU_ZERO_COPY_EXCHANGER_H__
      12              : #define __AICPU_ZERO_COPY_EXCHANGER_H__
      13              : 
      14              : #include <atomic>
      15              : #include <set>
      16              : #include <unordered_set>
      17              : #include <functional>
      18              : #include <hccl/hccl_types.h>
      19              : #include "aicpu_operator_pub.h"
      20              : #include "coll_alg_param.h"
      21              : #include "zero_copy/zero_copy_address_mgr.h"
      22              : #include "op_unfold_cache_entry.h"
      23              : 
      24              : namespace hccl {
      25              : class AicpuZeroCopyExchanger {
      26              : public:
      27              :     AicpuZeroCopyExchanger(u32 rank, u32 rankSize, const HcclOpResParam *resParam, std::function<bool()> needStop, u32 timeoutSec = 120, u32 deviceNumPerAggregation = MAX_MODULE_DEVICE_NUM,
      28              :         u32 taskMonitorInterval = 0);
      29              :     ~AicpuZeroCopyExchanger();
      30              : 
      31              :     HcclResult ExchangeAddress(const std::string &tag, void *localInput, void *localOutput, AlgResourceResponse *algResResponse);
      32              : 
      33              :     // 将每个remote rank对应的user input/output addr暴露给HcclCommAicpu, 为OpUnfoldCache做准备
      34              :     HcclResult PrepareRemoteUserMemRanges(const uint64_t inputSize, const uint64_t outputSize, std::vector<OpUnfoldMemRange>& userInputMemRanges, std::vector<OpUnfoldMemRange>& userOutputMemRanges) const;
      35              : 
      36              :     // yxg-debug 提供提前退出的方法退出阻塞接口
      37              : private:
      38              :     // 这里使用volatile修饰,是为了避免数据写到CPU cache中,必须要写到内存中
      39              :     struct FlagData {
      40              :         volatile u64 inAddr;    // 通信的input
      41              :         volatile u64 outAddr;   // 通信的output
      42              :         volatile u64 flag;      // flag标志,表明其那面数据是否有效,必须放置到最后一个成员,这样能保证sdma copy先写数据,后修改flag
      43              :     };
      44              : 
      45              :     struct TagRes {
      46              :         std::set<u32> remoteRanks;    // 本tag所有的通信对端rank
      47              :         std::vector<LINK> links;                // 本tag所有的通信对端link
      48              :         std::vector<void *> remotePtrs;         // batchSdma copy使用的入参
      49              :         std::vector<void *> selfPtrs;
      50              :         std::vector<FlagData> selfData;
      51              :         std::vector<size_t> sizes;
      52              :         std::vector<u32> rankIds;               // 维测信息使用
      53              :     };
      54              : 
      55              :     static constexpr u64 INVALID_DATA = 0;  // 数据无效
      56              :     static constexpr u64 VALID_DATA   = 1;  // 数据有效
      57              : 
      58            0 :     void MemFence() const
      59              :     {
      60              :         /* 内存屏障,即阻止编译器重排变量读写,也阻止CPU重排变量读写 */
      61              :         std::atomic_thread_fence(std::memory_order_seq_cst); 
      62            0 :     }
      63              : 
      64              :     // 判断是否所有的ipc都是有效的,如果无效则报错
      65              :     bool IsAllIpcAddressValid();
      66              :     bool IsSupportZeroCopyLinkType(LinkType linkType);
      67              : 
      68              :     /* 尝试从data中读数据,只有flag是valid时可以读, 读成功需要置invalid, 如果失败则返回EAGIN表示需要重试 */
      69              :     HcclResult TryToRead(FlagData &data, u64 &in, u64 &out);
      70              : 
      71              :     HcclResult GetRemoteRanks(TagRes &tagRes, OpCommTransport &opTransportResponse);
      72              :     HcclResult PrepareTagRes(const std::string &tag, OpCommTransport &opTransportResponse);
      73              :     HcclResult GetRemoteAddr();
      74              :     HcclResult BatchSetLocalAddrToRemote(void *in, void *out);
      75              :     HcclResult UpdateTransportAddress();
      76              :     std::string DumpLinkInfo(std::set<u32> &doneRanks);
      77              : 
      78              :     // 存放进行地址交换后的对端input/output
      79              :     u64 inAddrs_[MAX_MODULE_DEVICE_NUM]{};
      80              :     u64 outAddrs_[MAX_MODULE_DEVICE_NUM]{};
      81              :     u32 rankId_{INVALID_VALUE_RANKID};
      82              :     u32 rankSize_{INVALID_VALUE_RANKSIZE};
      83              : 
      84              :     const HcclOpResParam *resParam_{nullptr};
      85              :     std::function<bool()> needStop_{};
      86              :     u32 timeoutSec_ = 120;
      87              :     std::unordered_map<std::string, TagRes> tagRes_{};
      88              :     TagRes *current_{nullptr};      // 表明当前正在使用的tag资源
      89              : 
      90              :     static ZeroCopyAddressMgr globalAddrMgr_;
      91              : 
      92              :     u32 deviceNumPerAggregation_ = MAX_MODULE_DEVICE_NUM;
      93              :     u32 taskMonitorInterval_ = 0;
      94              : };
      95              : }
      96              : 
      97              : #endif
        

Generated by: LCOV version 2.0-1