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/basictypes.h" 9 #include "base/compiler_specific.h" 10 #include "net/quic/quic_clock.h" 11 #include "net/quic/quic_time.h" 12 13 namespace net { 14 15 class EpollServer; 16 17 namespace tools { 18 19 // Clock to efficiently retrieve an approximately accurate time from an 20 // EpollServer. 21 class QuicEpollClock : public QuicClock { 22 public: 23 explicit QuicEpollClock(EpollServer* epoll_server); 24 virtual ~QuicEpollClock(); 25 26 // Returns the approximate current time as a QuicTime object. 27 virtual QuicTime ApproximateNow() const OVERRIDE; 28 29 // Returns the current time as a QuicTime object. 30 // Note: this use significant resources please use only if needed. 31 virtual QuicTime Now() const OVERRIDE; 32 33 protected: 34 EpollServer* epoll_server_; 35 36 private: 37 DISALLOW_COPY_AND_ASSIGN(QuicEpollClock); 38 }; 39 40 } // namespace tools 41 } // namespace net 42 43 #endif // NET_TOOLS_QUIC_QUIC_EPOLL_CLOCK_H_ 44