1 // Copyright 2024 The Pigweed Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not 4 // use this file except in compliance with the License. You may obtain a copy of 5 // the License at 6 // 7 // https://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, WITHOUT 11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 12 // License for the specific language governing permissions and limitations under 13 // the License. 14 #pragma once 15 16 #include <lib/async/task.h> 17 18 #include "pw_async/task_function.h" 19 #include "pw_chrono/system_clock.h" 20 21 namespace pw::async_fuchsia { 22 23 // NativeTask friend forward declaration. 24 class FuchsiaDispatcher; 25 26 } // namespace pw::async_fuchsia 27 28 namespace pw::async::test::backend { 29 30 // NativeTask friend forward declaration. 31 class NativeFakeDispatcher; 32 33 } // namespace pw::async::test::backend 34 35 namespace pw::async::backend { 36 37 class NativeTask final : public async_task_t { 38 private: 39 friend class ::pw::async_fuchsia::FuchsiaDispatcher; 40 friend class ::pw::async::test::backend::NativeFakeDispatcher; 41 friend class ::pw::async::Task; 42 43 explicit NativeTask(::pw::async::Task& task); 44 explicit NativeTask(::pw::async::Task& task, TaskFunction&& f); 45 46 void operator()(Context& ctx, Status status); 47 48 void set_function(TaskFunction&& f); 49 50 chrono::SystemClock::time_point due_time() const; 51 52 void set_due_time(chrono::SystemClock::time_point due_time); 53 54 static void Handler(async_dispatcher_t* /*dispatcher*/, 55 async_task_t* task, 56 zx_status_t status); 57 58 TaskFunction func_; 59 Task& task_; 60 // `dispatcher_` is set by a Dispatcher to its own address before forwarding a 61 // task to the underlying Zircon async-loop, so that the Dispatcher pointer in 62 // the Context may be set in a type-safe manner inside `Handler` when invoked 63 // by the async-loop. 64 Dispatcher* dispatcher_ = nullptr; 65 }; 66 67 using NativeTaskHandle = NativeTask&; 68 69 } // namespace pw::async::backend 70