1 /* 2 * Copyright (c) 2024 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #include <dlfcn.h> 17 18 #include "base/log/log.h" 19 #include "base/log/log_wrapper.h" 20 #include "base/network/download_manager.h" 21 22 namespace OHOS::Ace { 23 using CreateDownloadManagerFunc = DownloadManager* (*)(); 24 std::unique_ptr<DownloadManager> DownloadManager::instance_ = nullptr; 25 std::mutex DownloadManager::mutex_; 26 constexpr char CREATE_DOWNLOAD_MANAGER_FUNC[] = "OHOS_ACE_CreateDownloadManager"; 27 constexpr char ACE_NET_WORK_NAME[] = "libace_network.z.so"; 28 CreateDownloadManager()29DownloadManager* CreateDownloadManager() 30 { 31 void* handle = dlopen(ACE_NET_WORK_NAME, RTLD_LAZY | RTLD_LOCAL); 32 if (handle == nullptr) { 33 TAG_LOGW(AceLogTag::ACE_DOWNLOAD_MANAGER, "load libace_network failed"); 34 return nullptr; 35 } 36 37 auto entry = reinterpret_cast<CreateDownloadManagerFunc>(dlsym(handle, CREATE_DOWNLOAD_MANAGER_FUNC)); 38 if (entry == nullptr) { 39 dlclose(handle); 40 return nullptr; 41 } 42 43 auto* manager = entry(); 44 return manager; 45 } 46 GetInstance()47DownloadManager* DownloadManager::GetInstance() 48 { 49 TAG_LOGI(AceLogTag::ACE_DOWNLOAD_MANAGER, "DownloadManager GetInstance"); 50 if (!instance_) { 51 std::lock_guard<std::mutex> lock(mutex_); 52 if (!instance_) { 53 auto* manager = CreateDownloadManager(); 54 instance_.reset(manager); 55 } 56 } 57 return instance_.get(); 58 } 59 } // namespace OHOS::Ace