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 STATE_GUARD_H
      12              : #define STATE_GUARD_H
      13              : 
      14              : namespace hccl {
      15              : 
      16              : template <typename Resource, typename State>
      17              : class StateGuard {
      18              : public:
      19          384 :     StateGuard(Resource* resource, State targetState) : resource_(resource) {
      20          384 :         if (resource_ != nullptr) {
      21          384 :             initialState_ = resource_->GetState();  // 直接调用GetState
      22          384 :             resource_->SetState(targetState);   // 设置目标状态
      23              :         }
      24          384 :     }
      25              : 
      26          384 :     ~StateGuard() {
      27          384 :         if (resource_ != nullptr) {
      28          384 :             resource_->SetState(initialState_); // 恢复初始状态
      29              :         }
      30          384 :     }
      31              : 
      32              : private:
      33              :     Resource* resource_ = nullptr;
      34              :     State initialState_ = {};
      35              : };
      36              : 
      37              : } // namespace hccl
      38              : 
      39              : #endif  // STATE_GUARD_H