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              : #include "heterog_mem_blocks_manager.h"
      12              : 
      13              : constexpr u32 SMALL_PAGE_SIZE = 4096;
      14              : 
      15              : namespace hccl {
      16            0 : HeterogMemBlocksManager::HeterogMemBlocksManager() : isinited_(false), beginAddr_(nullptr),
      17            0 :     memSize_(0), memStartAddr_(nullptr)
      18              : {
      19            0 : }
      20              : 
      21            0 : HeterogMemBlocksManager::~HeterogMemBlocksManager()
      22              : {
      23            0 :     if (memStartAddr_ != nullptr) {
      24            0 :         delete[] memStartAddr_;
      25              :     }
      26            0 :     memStartAddr_ = nullptr;
      27            0 :     beginAddr_ = nullptr;
      28            0 : }
      29              : 
      30            0 : HcclResult HeterogMemBlocksManager::Init(u32 memBlockNum)
      31              : {
      32            0 :     if (isinited_) {
      33            0 :         return HCCL_SUCCESS;
      34              :     }
      35            0 :     HCCL_INFO("HeterogMemBlocksManager Init memBlockNum(%u) expected links num[%u]", memBlockNum,
      36              :         memBlockNum / (MEM_BLOCK_RECV_WQE_BATCH_NUM * MEM_BLOCK_DOUBLE));
      37              : 
      38            0 :     u64 memLen = MEM_BLOCK_SIZE * memBlockNum + SMALL_PAGE_SIZE;
      39            0 :     memStartAddr_ = new (std::nothrow) s8[memLen];
      40            0 :     if (memStartAddr_ == nullptr) {
      41            0 :         HCCL_ERROR("[Create][HeterogMemBlocksManager]memStartAddr_ is nullptr");
      42            0 :         return HCCL_E_PARA;
      43              :     }
      44            0 :     u64 pageSizeNum = reinterpret_cast<u64>(memStartAddr_) / SMALL_PAGE_SIZE;
      45            0 :     beginAddr_ = reinterpret_cast<void*>((pageSizeNum + 1) * SMALL_PAGE_SIZE);
      46              : 
      47            0 :     CHK_SAFETY_FUNC_RET(memset_s(beginAddr_, MEM_BLOCK_SIZE * memBlockNum, 0, MEM_BLOCK_SIZE * memBlockNum));
      48              : 
      49            0 :     usableBlockQue_.Init(memBlockNum + 1);
      50            0 :     memSize_ = MEM_BLOCK_SIZE * memBlockNum;
      51            0 :     for (u32 i = 0; i < memBlockNum; i++) {
      52            0 :         CHK_RET(usableBlockQue_.Push(static_cast<void*>(static_cast<char *>(beginAddr_) + i * MEM_BLOCK_SIZE)));
      53              :     }
      54            0 :     isinited_ = true;
      55            0 :     return HCCL_SUCCESS;
      56              : }
      57              : 
      58            0 : HcclResult HeterogMemBlocksManager::Alloc(std::list<void *> &blockList)
      59              : {
      60            0 :     std::unique_lock<std::mutex> lock(usableBlockQueMutex_);
      61            0 :     if (blockList.size() > usableBlockQue_.Size()) {
      62            0 :         HCCL_ERROR("[HeterogMemBlocksManager][Alloc]lack of resources, blockListSize[%u] usableBlockQue_Size[%u]",
      63              :             blockList.size(), usableBlockQue_.Size());
      64            0 :         return HCCL_E_PARA;
      65              :     }
      66              : 
      67            0 :     for (auto &block : blockList) {
      68            0 :         CHK_RET(usableBlockQue_.Pop(block));
      69              :     }
      70            0 :     return HCCL_SUCCESS;
      71            0 : }
      72              : } // namespace hccl