1 /* 2 * Copyright (c) 2023 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 #ifndef OHOS_ROSEN_WINDOW_SCENE_TASK_SCHEDULER_H 17 #define OHOS_ROSEN_WINDOW_SCENE_TASK_SCHEDULER_H 18 19 #include <event_handler.h> 20 21 namespace OHOS::Rosen { 22 class TaskScheduler { 23 public: 24 TaskScheduler(const std::string& threadName); 25 ~TaskScheduler() = default; 26 27 std::shared_ptr<AppExecFwk::EventHandler> GetEventHandler(); 28 using Task = std::function<void()>; 29 void PostAsyncTask(Task task, int64_t delayTime = 0); 30 void PostVoidSyncTask(Task task); 31 template<typename SyncTask, typename Return = std::invoke_result_t<SyncTask>> PostSyncTask(SyncTask && task)32 Return PostSyncTask(SyncTask&& task) 33 { 34 Return ret; 35 auto syncTask = [&ret, &task]() { ret = task(); }; 36 if (handler_) { 37 handler_->PostSyncTask(syncTask, AppExecFwk::EventQueue::Priority::IMMEDIATE); 38 } 39 return ret; 40 } 41 42 private: 43 std::shared_ptr<AppExecFwk::EventHandler> handler_ = nullptr; 44 }; 45 } // namespace OHOS::Rosen 46 47 #endif // OHOS_ROSEN_WINDOW_SCENE_TASK_SCHEDULER_H 48