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 DLRTS_FUNCTION_V2_H
      12              : #define DLRTS_FUNCTION_V2_H
      13              : 
      14              : #include <mutex>
      15              : #include <dlfcn.h>
      16              : #include "log.h"
      17              : namespace Hccl {
      18              : template <const char* soName>
      19              : class DlRtsFunctionV2 {
      20              : public:
      21              :     explicit DlRtsFunctionV2() = default;
      22            1 :     virtual ~DlRtsFunctionV2()
      23              :     {
      24            1 :         if (handle_ != nullptr) {
      25            0 :             dlclose(handle_);
      26            0 :             handle_ = nullptr;
      27              :         }
      28            1 :     }
      29              : 
      30              :     template <const char* funcName>
      31            1 :     void* Handle()
      32              :     {
      33            1 :         Init();
      34            1 :         if (handle_ == nullptr) {
      35            1 :             return nullptr;
      36              :         }
      37            0 :         return dlsym(handle_, funcName);
      38              :     }
      39              : 
      40              : private:
      41            1 :     void Init()
      42              :     {
      43            1 :         std::lock_guard<std::mutex> lock(handleMutex_);
      44            1 :         if (isInit_) {
      45            0 :             return;
      46              :         }
      47            3 :         HCCL_INFO("DlRtsFunctionInit start, open so: %s", soName);
      48            1 :         handle_ = dlopen(soName, RTLD_NOW);
      49            1 :         const char* errMsg = dlerror();
      50            1 :         if (handle_ == nullptr) {
      51            3 :             HCCL_ERROR(
      52              :                 "dlopen [%s] failed, %s", soName,
      53              :                 (errMsg == nullptr) ? "check the file exist or permission denied." : errMsg);
      54            1 :             return;
      55              :         }
      56            0 :         isInit_ = true;
      57            1 :     }
      58              :     void* handle_ = nullptr;
      59              :     std::mutex handleMutex_;
      60              :     bool isInit_ = false;
      61              : };
      62              : } // namespace Hccl
      63              : #endif // DLRTS_FUNCTION_V2_H