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profiler.h
1 /**********************************************************************
2 * $Id: profiler.h 3255 2011-03-01 17:56:10Z mloskot $
3 *
4 * GEOS - Geometry Engine Open Source
5 * http://geos.refractions.net
6 *
7 * Copyright (C) 2001-2002 Vivid Solutions Inc.
8 *
9 * This is free software; you can redistribute and/or modify it under
10 * the terms of the GNU Lesser General Public Licence as published
11 * by the Free Software Foundation.
12 * See the COPYING file for more information.
13 *
14 **********************************************************************/
15
16 #ifndef GEOS_PROFILER_H
17 #define GEOS_PROFILER_H
18
19 #include <geos/export.h>
20
21 /* For MingW builds with __STRICT_ANSI__ (-ansi) */
22 #if defined(__MINGW32__)
23 /* Allow us to check for presence of gettimeofday in MingW */
24 #include <config.h>
25
26 #include <sys/time.h>
27 extern "C" {
28 extern _CRTIMP void __cdecl _tzset (void);
29 __MINGW_IMPORT int _daylight;
30 __MINGW_IMPORT long _timezone;
31 __MINGW_IMPORT char *_tzname[2];
32 }
33 #endif
34
35 #if defined(_MSC_VER) || defined(__MINGW32__) && !defined(HAVE_GETTIMEOFDAY)
36 #include <geos/timeval.h>
37 #else
38 #include <sys/time.h>
39 #endif
40
41 #include <map>
42 #include <memory>
43 #include <iostream>
44 #include <string>
45 #include <vector>
46
47 #ifndef PROFILE
48 #define PROFILE 0
49 #endif
50
51 #ifdef _MSC_VER
52 #pragma warning(push)
53 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
54 #endif
55
56 namespace geos {
57 namespace util {
58
59
60 /*
61 * \class Profile utils.h geos.h
62 *
63 * \brief Profile statistics
64 */
65 class GEOS_DLL Profile {
66 public:
68 Profile(std::string name);
69
71 ~Profile();
72
74 void start() {
75 gettimeofday(&starttime, NULL);
76 }
77
79 void stop()
80 {
81 gettimeofday(&stoptime, NULL);
82 double elapsed = 1000000*(stoptime.tv_sec-starttime.tv_sec)+
83 (stoptime.tv_usec-starttime.tv_usec);
84
85 timings.push_back(elapsed);
86 totaltime += elapsed;
87 if ( timings.size() == 1 ) max = min = elapsed;
88 else
89 {
90 if ( elapsed > max ) max = elapsed;
91 if ( elapsed < min ) min = elapsed;
92 }
93 avg = totaltime / timings.size();
94 }
95
97 double getMax() const;
98
100 double getMin() const;
101
103 double getTot() const;
104
106 double getAvg() const;
107
109 size_t getNumTimings() const;
110
112 std::string name;
113
114
115 private:
116
117 /* \brief current start and stop times */
118 struct timeval starttime, stoptime;
119
120 /* \brief actual times */
121 std::vector<double> timings;
122
123 /* \brief total time */
124 double totaltime;
125
126 /* \brief max time */
127 double max;
128
129 /* \brief max time */
130 double min;
131
132 /* \brief max time */
133 double avg;
134
135 };
136
137 /*
138 * \class Profiler utils.h geos.h
139 *
140 * \brief Profiling class
141 *
142 */
143 class GEOS_DLL Profiler {
144
145 public:
146
147 Profiler();
148 ~Profiler();
149
155 static Profiler *instance(void);
156
162 void start(std::string name);
163
169 void stop(std::string name);
170
172 Profile *get(std::string name);
173
174 std::map<std::string, Profile *> profs;
175 };
176
177
179 std::ostream& operator<< (std::ostream& os, const Profile&);
180
182 std::ostream& operator<< (std::ostream& os, const Profiler&);
183
184 } // namespace geos::util
185 } // namespace geos
186
187 #ifdef _MSC_VER
188 #pragma warning(pop)
189 #endif
190
191 #endif // ndef GEOS_PROFILER_H
192
193 /**********************************************************************
194 * $Log$
195 * Revision 1.8 2006/06/12 11:29:23 strk
196 * unsigned int => size_t
197 *
198 * Revision 1.7 2006/03/06 19:40:47 strk
199 * geos::util namespace. New GeometryCollection::iterator interface, many cleanups.
200 *
201 * Revision 1.6 2006/03/03 10:46:21 strk
202 * Removed 'using namespace' from headers, added missing headers in .cpp files, removed useless includes in headers (bug#46)
203 *
204 * Revision 1.5 2005/02/01 14:18:04 strk
205 * Made profiler start/stop inline
206 *
207 * Revision 1.4 2004/12/03 16:21:07 frank
208 * dont try for sys/time.h with MSVC
209 *
210 * Revision 1.3 2004/11/30 16:44:16 strk
211 * Added gettimeofday implementation for win32, curtesy of Wu Yongwei.
212 *
213 * Revision 1.2 2004/11/04 08:49:13 strk
214 * Unlinked new documentation.
215 *
216 * Revision 1.1 2004/11/01 16:43:04 strk
217 * Added Profiler code.
218 * Temporarly patched a bug in DoubleBits (must check drawbacks).
219 * Various cleanups and speedups.
220 *
221 **********************************************************************/