1 /** 2 * Copyright 2024 Huawei Technologies Co., Ltd 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 #include "resource.h" 17 #include <mutex> 18 19 namespace UT { 20 std::shared_ptr<UTResourceManager> UTResourceManager::inst_resource_manager_ = nullptr; 21 GetInstance()22std::shared_ptr<UTResourceManager> UTResourceManager::GetInstance() { 23 static std::once_flag init_flag_ = {}; 24 std::call_once(init_flag_, [&]() { 25 if (inst_resource_manager_ == nullptr) { 26 inst_resource_manager_ = std::make_shared<UTResourceManager>(); 27 } 28 }); 29 MS_EXCEPTION_IF_NULL(inst_resource_manager_); 30 return inst_resource_manager_; 31 } 32 } // namespace UT 33