libcore/SystemClock.h

   1 // SystemClock.h -- system-time based VirtualClock for gnash core lib
   2 //
   3 //   Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
   4 //   Free Software Foundation, Inc
   5 //
   6 // This program is free software; you can redistribute it and/or modify
   7 // it under the terms of the GNU General Public License as published by
   8 // the Free Software Foundation; either version 3 of the License, or
   9 // (at your option) any later version.
  10 //
  11 // This program is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU General Public License
  17 // along with this program; if not, write to the Free Software
  18 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19
  20 #ifndef GNASH_SYSTEM_CLOCK_H
  21 #define GNASH_SYSTEM_CLOCK_H
  22
  23 #include "VirtualClock.h" // for inheritance
  24
  25 #include <cstdint> // for std::uint64_t typedef
  26 #include "dsodefs.h"
  27
  28 namespace gnash
  29 {
  30
  31 /// A system-clock based virtual clock
  32 //
  33 /// This class uses the system clock for computing elapsed time.
  34 /// See http://en.wikipedia.org/wiki/System_time for capacity
  35 ///
  36 class DSOEXPORT SystemClock: public VirtualClock
  37 {
  38 public:
  39
  40     /// Construct the clock, starting it
  41     SystemClock();
  42
  43     // see VirtualClock.h for dox
  44     unsigned long int elapsed() const;
  45
  46     // see VirtualClock.h for dox
  47     void restart();
  48
  49 private:
  50
  51     /// System time at time of start
  52     std::uint64_t _startTime;
  53 };
  54
  55
  56 } // namespace gnash
  57
  58 #endif // GNASH_SYSTEM_CLOCK_H
  59