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 #ifndef META_API_TASK_QUEUE_H 17 #define META_API_TASK_QUEUE_H 18 19 #include <base/containers/type_traits.h> 20 21 #include <meta/api/future.h> 22 #include <meta/api/task.h> 23 #include <meta/interface/detail/any.h> 24 #include <meta/interface/interface_helpers.h> 25 #include <meta/interface/intf_promise.h> 26 #include <meta/interface/intf_task_queue_registry.h> 27 META_BEGIN_NAMESPACE()28META_BEGIN_NAMESPACE() 29 30 template<typename Func> 31 auto CreateFutureFromResultFunction(Func&& func) 32 { 33 auto fut = 34 GetTaskQueueRegistry().ConstructFutureWithValue(InvokeWaitableTaskFunction(BASE_NS::forward<Func>(func))); 35 return Future<PlainType_t<decltype(func())>>(fut); 36 } 37 38 template<typename Func> AddFutureTaskOrRunDirectly(const ITaskQueue::Ptr & queue,Func && func)39auto AddFutureTaskOrRunDirectly(const ITaskQueue::Ptr& queue, Func&& func) 40 { 41 auto q = GetTaskQueueRegistry().GetCurrentTaskQueue(); 42 if (q == queue) { 43 return CreateFutureFromResultFunction(BASE_NS::forward<Func>(func)); 44 } 45 return Future<PlainType_t<decltype(func())>>(queue->AddWaitableTask(CreateWaitableTask(BASE_NS::move(func)))); 46 } 47 48 META_END_NAMESPACE() 49 50 #endif 51