net/tools/quic/quic_epoll_clock.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef NET_TOOLS_QUIC_QUIC_EPOLL_CLOCK_H_
   6 #define NET_TOOLS_QUIC_QUIC_EPOLL_CLOCK_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "net/quic/quic_clock.h"
  10 #include "net/quic/quic_time.h"
  11
  12 namespace net {
  13
  14 class EpollServer;
  15
  16 namespace tools {
  17
  18 // Clock to efficiently retrieve an approximately accurate time from an
  19 // EpollServer.
  20 class QuicEpollClock : public QuicClock {
  21  public:
  22   explicit QuicEpollClock(EpollServer* epoll_server);
  23   virtual ~QuicEpollClock();
  24
  25   // Returns the approximate current time as a QuicTime object.
  26   virtual QuicTime ApproximateNow() const OVERRIDE;
  27
  28   // Returns the current time as a QuicTime object.
  29   // Note: this use significant resources please use only if needed.
  30   virtual QuicTime Now() const OVERRIDE;
  31
  32  protected:
  33   EpollServer* epoll_server_;
  34 };
  35
  36 }  // namespace tools
  37 }  // namespace net
  38
  39 #endif  // NET_TOOLS_QUIC_QUIC_EPOLL_CLOCK_H_