Move shared files in net/quic/ into net/quic/core/

net/quic/quic_alarm.h

-// Copyright 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef NET_QUIC_QUIC_ALARM_H_
-#define NET_QUIC_QUIC_ALARM_H_
-
-#include <memory>
-
-#include "base/macros.h"
-#include "net/base/net_export.h"
-#include "net/quic/quic_arena_scoped_ptr.h"
-#include "net/quic/quic_time.h"
-
-namespace net {
-
-// Abstract class which represents an alarm which will go off at a
-// scheduled time, and execute the |OnAlarm| method of the delegate.
-// An alarm may be cancelled, in which case it may or may not be
-// removed from the underlying scheduling system, but in either case
-// the task will not be executed.
-class NET_EXPORT_PRIVATE QuicAlarm {
- public:
-  class NET_EXPORT_PRIVATE Delegate {
-   public:
-    virtual ~Delegate() {}
-
-    // Invoked when the alarm fires.
-    virtual void OnAlarm() = 0;
-  };
-
-  explicit QuicAlarm(QuicArenaScopedPtr<Delegate> delegate);
-  virtual ~QuicAlarm();
-
-  // Sets the alarm to fire at |deadline|.  Must not be called while
-  // the alarm is set.  To reschedule an alarm, call Cancel() first,
-  // then Set().
-  void Set(QuicTime new_deadline);
-
-  // Cancels the alarm.  May be called repeatedly.  Does not
-  // guarantee that the underlying scheduling system will remove
-  // the alarm's associated task, but guarantees that the
-  // delegates OnAlarm method will not be called.
-  void Cancel();
-
-  // Cancels and sets the alarm if the |deadline| is farther from the current
-  // deadline than |granularity|, and otherwise does nothing.  If |deadline| is
-  // not initialized, the alarm is cancelled.
-  void Update(QuicTime new_deadline, QuicTime::Delta granularity);
-
-  // Returns true if |deadline_| has been set to a non-zero time.
-  bool IsSet() const;
-
-  QuicTime deadline() const { return deadline_; }
-
- protected:
-  // Subclasses implement this method to perform the platform-specific
-  // scheduling of the alarm.  Is called from Set() or Fire(), after the
-  // deadline has been updated.
-  virtual void SetImpl() = 0;
-
-  // Subclasses implement this method to perform the platform-specific
-  // cancelation of the alarm.
-  virtual void CancelImpl() = 0;
-
-  // Subclasses implement this method to perform the platform-specific update of
-  // the alarm if there exists a more optimal implementation than calling
-  // CancelImpl() and SetImpl().
-  virtual void UpdateImpl();
-
-  // Called by subclasses when the alarm fires.  Invokes the
-  // delegates |OnAlarm| if a delegate is set, and if the deadline
-  // has been exceeded.  Implementations which do not remove the
-  // alarm from the underlying scheduler on Cancel() may need to handle
-  // the situation where the task executes before the deadline has been
-  // reached, in which case they need to reschedule the task and must not
-  // call invoke this method.
-  void Fire();
-
- private:
-  QuicArenaScopedPtr<Delegate> delegate_;
-  QuicTime deadline_;
-
-  DISALLOW_COPY_AND_ASSIGN(QuicAlarm);
-};
-
-}  // namespace net
-
-#endif  // NET_QUIC_QUIC_ALARM_H_