src/Sockets/EventTime.cpp

   1 /** \file EventTime.cpp
   2  **     \date  2005-12-07
   3  **     \author grymse@alhem.net
   4 **/
   5 /*
   6 Copyright (C) 2005,2007  Anders Hedstrom
   7
   8 This library is made available under the terms of the GNU GPL.
   9
  10 If you would like to use this library in a closed-source application,
  11 a separate license agreement is available. For information about
  12 the closed-source license agreement for the C++ sockets library,
  13 please visit http://www.alhem.net/Sockets/license.html and/or
  14 email license@alhem.net.
  15
  16 This program is free software; you can redistribute it and/or
  17 modify it under the terms of the GNU General Public License
  18 as published by the Free Software Foundation; either version 2
  19 of the License, or (at your option) any later version.
  20
  21 This program is distributed in the hope that it will be useful,
  22 but WITHOUT ANY WARRANTY; without even the implied warranty of
  23 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24 GNU General Public License for more details.
  25
  26 You should have received a copy of the GNU General Public License
  27 along with this program; if not, write to the Free Software
  28 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  29 */
  30 #include "EventTime.h"
  31 #ifdef _WIN32
  32 #include <windows.h>
  33 #else
  34 #include <sys/select.h>
  35 #include <sys/time.h>
  36 #endif
  37
  38
  39
  40 #ifdef SOCKETS_NAMESPACE
  41 namespace SOCKETS_NAMESPACE {
  42 #endif
  43
  44
  45 EventTime::EventTime() : m_time(Tick())
  46 {
  47 }
  48
  49
  50 EventTime::EventTime(mytime_t sec,long usec) : m_time(Tick())
  51 {
  52         m_time += sec * 1000000 + usec;
  53 }
  54
  55
  56 EventTime::~EventTime()
  57 {
  58 }
  59
  60
  61 mytime_t EventTime::Tick()
  62 {
  63         mytime_t t;
  64 #ifdef _WIN32
  65         FILETIME ft;
  66         GetSystemTimeAsFileTime(&ft);
  67         t = ft.dwHighDateTime;
  68         t = t << 32;
  69         t += ft.dwLowDateTime;
  70         t /= 10; // us
  71 #else
  72         struct timeval tv;
  73         struct timezone tz;
  74         gettimeofday(&tv, &tz);
  75         t = tv.tv_sec;
  76         t *= 1000000;
  77         t += tv.tv_usec;
  78 #endif
  79         return t;
  80 }
  81
  82
  83 EventTime EventTime::operator - (const EventTime& x) const
  84 {
  85         EventTime t;
  86         t.m_time = m_time - x.m_time;
  87         return t;
  88 }
  89
  90
  91 bool EventTime::operator < (const EventTime& x) const
  92 {
  93         return m_time < x.m_time;
  94 }
  95
  96
  97 #ifdef SOCKETS_NAMESPACE
  98 }
  99 #endif