xorp

clock.hh

00001 // -*- c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t -*-
00002 // vim:set sts=4 ts=8:
00003 
00004 // Copyright (c) 2001-2011 XORP, Inc and Others
00005 //
00006 // This program is free software; you can redistribute it and/or modify
00007 // it under the terms of the GNU Lesser General Public License, Version
00008 // 2.1, June 1999 as published by the Free Software Foundation.
00009 // Redistribution and/or modification of this program under the terms of
00010 // any other version of the GNU Lesser General Public License is not
00011 // permitted.
00012 // 
00013 // This program is distributed in the hope that it will be useful, but
00014 // WITHOUT ANY WARRANTY; without even the implied warranty of
00015 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For more details,
00016 // see the GNU Lesser General Public License, Version 2.1, a copy of
00017 // which can be found in the XORP LICENSE.lgpl file.
00018 // 
00019 // XORP, Inc, 2953 Bunker Hill Lane, Suite 204, Santa Clara, CA 95054, USA;
00020 // http://xorp.net
00021 
00022 // $XORP: xorp/libxorp/clock.hh,v 1.9 2008/10/02 21:57:30 bms Exp $
00023 
00024 #ifndef __LIBXORP_CLOCK_HH__
00025 #define __LIBXORP_CLOCK_HH__
00026 
00027 class TimeVal;
00028 
00029 class ClockBase {
00030 public:
00031     virtual ~ClockBase();
00032 
00036     virtual void advance_time() = 0;
00037 
00045     virtual void current_time(TimeVal& tv) = 0;
00046 };
00047 
00052 class SystemClock : public ClockBase, NONCOPYABLE {
00053 public:
00054     SystemClock();
00055     virtual ~SystemClock();
00056     void advance_time();
00057     void current_time(TimeVal& tv);
00058 
00059 private:
00060     TimeVal* _tv;
00061 
00062 #ifdef __WIN32__
00063     int ms_time_res;
00064 #endif
00065 };
00066 
00067 #endif // __LIBXORP_CLOCK_HH__
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