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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef REMOTING_HOST_BACKOFF_TIMER_H_
#define REMOTING_HOST_BACKOFF_TIMER_H_
#include <memory>
#include "base/functional/callback.h"
#include "base/timer/timer.h"
#include "net/base/backoff_entry.h"
namespace remoting {
// An object similar to a base::Timer with exponential backoff.
class BackoffTimer {
public:
BackoffTimer();
BackoffTimer(const BackoffTimer&) = delete;
BackoffTimer& operator=(const BackoffTimer&) = delete;
~BackoffTimer();
// Invokes |user_task| at intervals specified by |delay|, and
// increasing up to |max_delay|. Always invokes |user_task| before
// the first scheduled delay.
void Start(const base::Location& posted_from,
base::TimeDelta delay,
base::TimeDelta max_delay,
const base::RepeatingClosure& user_task);
// Prevents the user task from being invoked again.
void Stop();
// Returns true if the user task may be invoked in the future.
bool IsRunning() const { return !!backoff_entry_; }
private:
void StartTimer();
void OnTimerFired();
base::OneShotTimer timer_;
base::RepeatingClosure user_task_;
base::Location posted_from_;
net::BackoffEntry::Policy backoff_policy_ = {};
std::unique_ptr<net::BackoffEntry> backoff_entry_;
};
} // namespace remoting
#endif // REMOTING_HOST_BACKOFF_TIMER_H_
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