dispatcher.h

// Copyright 2022 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_chrono/system_clock.h"
 
namespace pw::async {
 
class Task;
 
class Dispatcher : public chrono::VirtualSystemClock {
 public:
  ~Dispatcher() override = default;
 
  virtual void Post(Task& task) { PostAt(task, now()); }
 
  virtual void PostAfter(Task& task, chrono::SystemClock::duration delay) {
    PostAt(task, now() + delay);
  }
 
  virtual void PostAt(Task& task, chrono::SystemClock::time_point time) = 0;
 
  virtual bool Cancel(Task& task) = 0;
};
 
}  // namespace pw::async