1 // Ceres Solver - A fast non-linear least squares minimizer
2 // Copyright 2012 Google Inc. All rights reserved.
3 // http://code.google.com/p/ceres-solver/
4 //
5 // Redistribution and use in source and binary forms, with or without
6 // modification, are permitted provided that the following conditions are met:
7 //
8 // * Redistributions of source code must retain the above copyright notice,
9 // this list of conditions and the following disclaimer.
10 // * Redistributions in binary form must reproduce the above copyright notice,
11 // this list of conditions and the following disclaimer in the documentation
12 // and/or other materials provided with the distribution.
13 // * Neither the name of Google Inc. nor the names of its contributors may be
14 // used to endorse or promote products derived from this software without
15 // specific prior written permission.
16 //
17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18 // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
21 // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 // POSSIBILITY OF SUCH DAMAGE.
28 //
29 // Author: strandmark@google.com (Petter Strandmark)
30
31 #include "ceres/wall_time.h"
32
33 #ifdef CERES_USE_OPENMP
34 #include <omp.h>
35 #else
36 #include <ctime>
37 #endif
38
39 #ifdef _WIN32
40 #include <windows.h>
41 #else
42 #include <sys/time.h>
43 #endif
44
45 namespace ceres {
46 namespace internal {
47
WallTimeInSeconds()48 double WallTimeInSeconds() {
49 #ifdef CERES_USE_OPENMP
50 return omp_get_wtime();
51 #else
52 #ifdef _WIN32
53 return static_cast<double>(std::time(NULL));
54 #else
55 timeval time_val;
56 gettimeofday(&time_val, NULL);
57 return (time_val.tv_sec + time_val.tv_usec * 1e-6);
58 #endif
59 #endif
60 }
61
EventLogger(const string & logger_name)62 EventLogger::EventLogger(const string& logger_name)
63 : start_time_(WallTimeInSeconds()),
64 last_event_time_(start_time_),
65 events_("") {
66 StringAppendF(&events_,
67 "\n%s\n Delta Cumulative\n",
68 logger_name.c_str());
69 }
70
~EventLogger()71 EventLogger::~EventLogger() {
72 if (VLOG_IS_ON(3)) {
73 AddEvent("Total");
74 VLOG(2) << "\n" << events_ << "\n";
75 }
76 }
77
AddEvent(const string & event_name)78 void EventLogger::AddEvent(const string& event_name) {
79 if (!VLOG_IS_ON(3)) {
80 return;
81 }
82
83 const double current_time = WallTimeInSeconds();
84 const double relative_time_delta = current_time - last_event_time_;
85 const double absolute_time_delta = current_time - start_time_;
86 last_event_time_ = current_time;
87
88 StringAppendF(&events_,
89 " %30s : %10.5f %10.5f\n",
90 event_name.c_str(),
91 relative_time_delta,
92 absolute_time_delta);
93 }
94
95 } // namespace internal
96 } // namespace ceres
97