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# 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  **********************************************************************/