You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
113 lines
4.1 KiB
113 lines
4.1 KiB
/*
|
|
* Copyright 2019 The Android Open Source Project
|
|
*
|
|
* 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
|
|
*
|
|
* http://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 <functional>
|
|
#include <memory>
|
|
#include <mutex>
|
|
#include <queue>
|
|
|
|
#include "common/bind.h"
|
|
#include "common/callback.h"
|
|
#include "common/contextual_callback.h"
|
|
#include "os/thread.h"
|
|
#include "os/utils.h"
|
|
|
|
namespace bluetooth {
|
|
namespace os {
|
|
|
|
// A message-queue style handler for reactor-based thread to handle incoming events from different threads. When it's
|
|
// constructed, it will register a reactable on the specified thread; when it's destroyed, it will unregister itself
|
|
// from the thread.
|
|
class Handler : public common::IPostableContext {
|
|
public:
|
|
// Create and register a handler on given thread
|
|
explicit Handler(Thread* thread);
|
|
|
|
// Unregister this handler from the thread and release resource. Unhandled events will be discarded and not executed.
|
|
virtual ~Handler();
|
|
|
|
DISALLOW_COPY_AND_ASSIGN(Handler);
|
|
|
|
// Enqueue a closure to the queue of this handler
|
|
virtual void Post(common::OnceClosure closure) override;
|
|
|
|
// Remove all pending events from the queue of this handler
|
|
void Clear();
|
|
|
|
// Die if the current reactable doesn't stop before the timeout. Must be called after Clear()
|
|
void WaitUntilStopped(std::chrono::milliseconds timeout);
|
|
|
|
template <typename Functor, typename... Args>
|
|
void Call(Functor&& functor, Args&&... args) {
|
|
Post(common::BindOnce(std::forward<Functor>(functor), std::forward<Args>(args)...));
|
|
}
|
|
|
|
template <typename T, typename Functor, typename... Args>
|
|
void CallOn(T* obj, Functor&& functor, Args&&... args) {
|
|
Post(common::BindOnce(std::forward<Functor>(functor), common::Unretained(obj), std::forward<Args>(args)...));
|
|
}
|
|
|
|
template <typename Functor, typename... Args>
|
|
common::ContextualOnceCallback<common::MakeUnboundRunType<Functor, Args...>> BindOnce(
|
|
Functor&& functor, Args&&... args) {
|
|
return common::ContextualOnceCallback<common::MakeUnboundRunType<Functor, Args...>>(
|
|
common::BindOnce(std::forward<Functor>(functor), std::forward<Args>(args)...), this);
|
|
}
|
|
|
|
template <typename Functor, typename T, typename... Args>
|
|
common::ContextualOnceCallback<common::MakeUnboundRunType<Functor, T, Args...>> BindOnceOn(
|
|
T* obj, Functor&& functor, Args&&... args) {
|
|
return common::ContextualOnceCallback<common::MakeUnboundRunType<Functor, T, Args...>>(
|
|
common::BindOnce(std::forward<Functor>(functor), common::Unretained(obj), std::forward<Args>(args)...), this);
|
|
}
|
|
|
|
template <typename Functor, typename... Args>
|
|
common::ContextualCallback<common::MakeUnboundRunType<Functor, Args...>> Bind(Functor&& functor, Args&&... args) {
|
|
return common::ContextualCallback<common::MakeUnboundRunType<Functor, Args...>>(
|
|
common::Bind(std::forward<Functor>(functor), std::forward<Args>(args)...), this);
|
|
}
|
|
|
|
template <typename Functor, typename T, typename... Args>
|
|
common::ContextualCallback<common::MakeUnboundRunType<Functor, T, Args...>> BindOn(
|
|
T* obj, Functor&& functor, Args&&... args) {
|
|
return common::ContextualCallback<common::MakeUnboundRunType<Functor, T, Args...>>(
|
|
common::Bind(std::forward<Functor>(functor), common::Unretained(obj), std::forward<Args>(args)...), this);
|
|
}
|
|
|
|
template <typename T>
|
|
friend class Queue;
|
|
|
|
friend class Alarm;
|
|
|
|
friend class RepeatingAlarm;
|
|
|
|
private:
|
|
inline bool was_cleared() const {
|
|
return tasks_ == nullptr;
|
|
};
|
|
std::queue<common::OnceClosure>* tasks_;
|
|
Thread* thread_;
|
|
int fd_;
|
|
Reactor::Reactable* reactable_;
|
|
mutable std::mutex mutex_;
|
|
void handle_next_event();
|
|
};
|
|
|
|
} // namespace os
|
|
} // namespace bluetooth
|