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// Copyright 2023 The Pigweed Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
#pragma once
#include "pw_async/context.h"
#include "pw_async/task_function.h"
#include "pw_chrono/system_clock.h"
#include "pw_containers/intrusive_list.h"
namespace pw::async {
class BasicDispatcher;
namespace test::backend {
class NativeFakeDispatcher;
}
} // namespace pw::async
namespace pw::async::backend {
// Task backend for BasicDispatcher.
class NativeTask final : public IntrusiveList<NativeTask>::Item {
private:
friend class ::pw::async::Task;
friend class ::pw::async::BasicDispatcher;
friend class ::pw::async::test::backend::NativeFakeDispatcher;
NativeTask(::pw::async::Task& task) : task_(task) {}
explicit NativeTask(::pw::async::Task& task, TaskFunction&& f)
: func_(std::move(f)), task_(task) {}
void operator()(Context& ctx, Status status) { func_(ctx, status); }
void set_function(TaskFunction&& f) { func_ = std::move(f); }
pw::chrono::SystemClock::time_point due_time() const { return due_time_; }
void set_due_time(chrono::SystemClock::time_point due_time) {
due_time_ = due_time;
}
TaskFunction func_ = nullptr;
// task_ is placed after func_ to take advantage of the padding that would
// otherwise be added here. On 32-bit systems, func_ and due_time_ have an
// alignment of 8, but func_ has a size of 12 by default. Thus, 4 bytes of
// padding would be added here, which is just enough for a pointer.
Task& task_;
pw::chrono::SystemClock::time_point due_time_;
};
using NativeTaskHandle = NativeTask&;
} // namespace pw::async::backend
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