ofstd/include/dcmtk/ofstd/oftimer.h

00001 /*
00002  *
00003  *  Copyright (C) 1997-2010, OFFIS e.V.
00004  *  All rights reserved.  See COPYRIGHT file for details.
00005  *
00006  *  This software and supporting documentation were developed by
00007  *
00008  *    OFFIS e.V.
00009  *    R&D Division Health
00010  *    Escherweg 2
00011  *    D-26121 Oldenburg, Germany
00012  *
00013  *
00014  *  Module:  ofstd
00015  *
00016  *  Author:  Joerg Riesmeier
00017  *
00018  *  Purpose: Class for measurement of time (Header)
00019  *
00020  *  Last Update:      $Author: joergr $
00021  *  Update Date:      $Date: 2010-10-14 13:15:50 $
00022  *  CVS/RCS Revision: $Revision: 1.13 $
00023  *  Status:           $State: Exp $
00024  *
00025  *  CVS/RCS Log at end of file
00026  *
00027  */
00028 
00029 
00030 #ifndef OFTIMER_H
00031 #define OFTIMER_H
00032 
00033 #include "dcmtk/config/osconfig.h"
00034 #include "dcmtk/ofstd/ofcast.h"
00035 
00036 #ifdef HAVE_WINDOWS_H
00037 #include <windows.h>
00038 #else /* UNIX */
00039 #include <sys/time.h>
00040 #endif
00041 
00042 #define INCLUDE_CSTDDEF               /* For NULL */
00043 #include "dcmtk/ofstd/ofstdinc.h"
00044 
00045 
00046 /*---------------------*
00047  *  class declaration  *
00048  *---------------------*/
00049 
00053 class OFTimer
00054 {
00055 
00056  public:
00057 
00060     OFTimer()
00061       : Start(getTime())
00062     {
00063     }
00064     
00067     inline void reset()
00068     {
00069         Start = getTime();
00070     }
00071     
00077     inline double getDiff() const
00078     {
00079         return getTime() - Start;
00080     }
00081 
00088     inline static double getDiff(double start)
00089     {
00090         return getTime() - start;
00091     }
00092 
00097     inline static double getTime()
00098     {
00099 #ifdef HAVE_WINDOWS_H
00100         return OFstatic_cast(double, GetTickCount()) / 1000;
00101 #else /* tested on solaris */
00102         timeval c_time;
00103         gettimeofday(&c_time, NULL);
00104         return OFstatic_cast(double, c_time.tv_sec) + OFstatic_cast(double, c_time.tv_usec) / 1000000;
00105 #endif
00106     }
00107 
00108 
00109  private:
00110 
00112     double Start; 
00113 };
00114 
00115 
00116 #endif
00117 
00118 
00119 /*
00120  *
00121  * CVS/RCS Log:
00122  * $Log: oftimer.h,v $
00123  * Revision 1.13  2010-10-14 13:15:50  joergr
00124  * Updated copyright header. Added reference to COPYRIGHT file.
00125  *
00126  * Revision 1.12  2010-03-01 09:08:51  uli
00127  * Removed some unnecessary include directives in the headers.
00128  *
00129  * Revision 1.11  2005-12-08 16:06:10  meichel
00130  * Changed include path schema for all DCMTK header files
00131  *
00132  * Revision 1.10  2003/12/05 10:37:41  joergr
00133  * Removed leading underscore characters from preprocessor symbols (reserved
00134  * symbols). Updated copyright date where appropriate.
00135  *
00136  * Revision 1.9  2003/07/09 13:57:43  meichel
00137  * Adapted type casts to new-style typecast operators defined in ofcast.h
00138  *
00139  * Revision 1.8  2001/06/01 15:51:36  meichel
00140  * Updated copyright header
00141  *
00142  * Revision 1.7  2000/03/08 16:36:03  meichel
00143  * Updated copyright header.
00144  *
00145  * Revision 1.6  2000/02/02 10:56:25  joergr
00146  * Removed space characters before preprocessor directives.
00147  *
00148  * Revision 1.5  1999/04/29 13:45:00  joergr
00149  * Added DOC++ comments.
00150  *
00151  * Revision 1.4  1999/04/21 13:01:44  meichel
00152  * ofstd/include/oftimer.h
00153  *
00154  * Revision 1.3  1999/02/05 14:07:23  joergr
00155  * Introduced new preprocessor definition HAVE_WINDOWS_H.
00156  *
00157  * Revision 1.2  1999/01/20 15:56:12  joergr
00158  * Minor changes to avoid compiler warnings (gcc 2.8.1 with additional
00159  * options).
00160  *
00161  * Revision 1.1  1999/01/20 14:27:02  joergr
00162  * Added class for measurement of time.
00163  *
00164  *
00165  */


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