profiler.h

00001 /**********************************************************************
00002  * $Id: profiler.h 3255 2011-03-01 17:56:10Z mloskot $
00003  *
00004  * GEOS - Geometry Engine Open Source
00005  * http://geos.refractions.net
00006  *
00007  * Copyright (C) 2001-2002 Vivid Solutions Inc.
00008  *
00009  * This is free software; you can redistribute and/or modify it under
00010  * the terms of the GNU Lesser General Public Licence as published
00011  * by the Free Software Foundation. 
00012  * See the COPYING file for more information.
00013  *
00014  **********************************************************************/
00015 
00016 #ifndef GEOS_PROFILER_H
00017 #define GEOS_PROFILER_H
00018 
00019 #include <geos/export.h>
00020 
00021 /* For MingW builds with __STRICT_ANSI__ (-ansi) */
00022 #if defined(__MINGW32__)
00023 /* Allow us to check for presence of gettimeofday in MingW */ 
00024 #include <config.h>
00025 
00026 #include <sys/time.h>
00027 extern "C" {
00028   extern _CRTIMP void __cdecl   _tzset (void);
00029   __MINGW_IMPORT int    _daylight;
00030   __MINGW_IMPORT long   _timezone;
00031   __MINGW_IMPORT char   *_tzname[2];
00032 }
00033 #endif
00034  
00035 #if defined(_MSC_VER) || defined(__MINGW32__) && !defined(HAVE_GETTIMEOFDAY)
00036 #include <geos/timeval.h>
00037 #else
00038 #include <sys/time.h>
00039 #endif
00040 
00041 #include <map>
00042 #include <memory>
00043 #include <iostream>
00044 #include <string>
00045 #include <vector>
00046 
00047 #ifndef PROFILE
00048 #define PROFILE 0
00049 #endif
00050 
00051 #ifdef _MSC_VER
00052 #pragma warning(push)
00053 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
00054 #endif
00055 
00056 namespace geos {
00057 namespace util {
00058 
00059 
00060 /*
00061  * \class Profile utils.h geos.h
00062  *
00063  * \brief Profile statistics
00064  */
00065 class GEOS_DLL Profile {
00066 public:
00068         Profile(std::string name);
00069 
00071         ~Profile();
00072 
00074         void start() {
00075                 gettimeofday(&starttime, NULL);
00076         }
00077 
00079         void stop()
00080         {
00081                 gettimeofday(&stoptime, NULL);
00082                 double elapsed = 1000000*(stoptime.tv_sec-starttime.tv_sec)+
00083                         (stoptime.tv_usec-starttime.tv_usec);
00084 
00085                 timings.push_back(elapsed);
00086                 totaltime += elapsed;
00087                 if ( timings.size() == 1 ) max = min = elapsed;
00088                 else
00089                 {
00090                         if ( elapsed > max ) max = elapsed;
00091                         if ( elapsed < min ) min = elapsed;
00092                 }
00093                 avg = totaltime / timings.size();
00094         }
00095 
00097         double getMax() const;
00098 
00100         double getMin() const;
00101 
00103         double getTot() const;
00104 
00106         double getAvg() const;
00107 
00109         size_t getNumTimings() const;
00110 
00112         std::string name;
00113 
00114 
00115 private:
00116 
00117         /* \brief current start and stop times */
00118         struct timeval starttime, stoptime;
00119 
00120         /* \brief actual times */
00121         std::vector<double> timings;
00122 
00123         /* \brief total time */
00124         double totaltime;
00125 
00126         /* \brief max time */
00127         double max;
00128 
00129         /* \brief max time */
00130         double min;
00131 
00132         /* \brief max time */
00133         double avg;
00134 
00135 };
00136 
00137 /*
00138  * \class Profiler utils.h geos.h
00139  *
00140  * \brief Profiling class
00141  *
00142  */
00143 class GEOS_DLL Profiler {
00144 
00145 public:
00146 
00147         Profiler();
00148         ~Profiler();
00149 
00155         static Profiler *instance(void);
00156 
00162         void start(std::string name);
00163 
00169         void stop(std::string name);
00170 
00172         Profile *get(std::string name);
00173 
00174         std::map<std::string, Profile *> profs;
00175 };
00176 
00177 
00179 std::ostream& operator<< (std::ostream& os, const Profile&);
00180 
00182 std::ostream& operator<< (std::ostream& os, const Profiler&);
00183 
00184 } // namespace geos::util
00185 } // namespace geos
00186 
00187 #ifdef _MSC_VER
00188 #pragma warning(pop)
00189 #endif
00190 
00191 #endif // ndef GEOS_PROFILER_H
00192 
00193 /**********************************************************************
00194  * $Log$
00195  * Revision 1.8  2006/06/12 11:29:23  strk
00196  * unsigned int => size_t
00197  *
00198  * Revision 1.7  2006/03/06 19:40:47  strk
00199  * geos::util namespace. New GeometryCollection::iterator interface, many cleanups.
00200  *
00201  * Revision 1.6  2006/03/03 10:46:21  strk
00202  * Removed 'using namespace' from headers, added missing headers in .cpp files, removed useless includes in headers (bug#46)
00203  *
00204  * Revision 1.5  2005/02/01 14:18:04  strk
00205  * Made profiler start/stop inline
00206  *
00207  * Revision 1.4  2004/12/03 16:21:07  frank
00208  * dont try for sys/time.h with MSVC
00209  *
00210  * Revision 1.3  2004/11/30 16:44:16  strk
00211  * Added gettimeofday implementation for win32, curtesy of Wu Yongwei.
00212  *
00213  * Revision 1.2  2004/11/04 08:49:13  strk
00214  * Unlinked new documentation.
00215  *
00216  * Revision 1.1  2004/11/01 16:43:04  strk
00217  * Added Profiler code.
00218  * Temporarly patched a bug in DoubleBits (must check drawbacks).
00219  * Various cleanups and speedups.
00220  *
00221  **********************************************************************/

Generated on Thu Mar 14 16:37:09 2013 for GEOS by  doxygen 1.4.7