10ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// Ceres Solver - A fast non-linear least squares minimizer 20ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// Copyright 2012 Google Inc. All rights reserved. 30ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// http://code.google.com/p/ceres-solver/ 40ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// 50ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// Redistribution and use in source and binary forms, with or without 60ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// modification, are permitted provided that the following conditions are met: 70ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// 80ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// * Redistributions of source code must retain the above copyright notice, 90ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// this list of conditions and the following disclaimer. 100ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// * Redistributions in binary form must reproduce the above copyright notice, 110ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// this list of conditions and the following disclaimer in the documentation 120ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// and/or other materials provided with the distribution. 130ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// * Neither the name of Google Inc. nor the names of its contributors may be 140ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// used to endorse or promote products derived from this software without 150ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// specific prior written permission. 160ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// 170ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 180ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 190ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 200ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 210ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 220ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 230ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 240ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 250ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 260ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 270ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// POSSIBILITY OF SUCH DAMAGE. 280ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// 290ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong// Author: strandmark@google.com (Petter Strandmark) 300ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 310ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong#ifndef CERES_INTERNAL_WALL_TIME_H_ 320ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong#define CERES_INTERNAL_WALL_TIME_H_ 330ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 341d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling#include <map> 351d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling#include <string> 361d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling#include "ceres/internal/port.h" 371d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling#include "ceres/stringprintf.h" 381d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling#include "glog/logging.h" 391d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling 400ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kongnamespace ceres { 410ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kongnamespace internal { 420ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 431d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// Returns time, in seconds, from some arbitrary starting point. If 441d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// OpenMP is available then the high precision openmp_get_wtime() 451d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// function is used. Otherwise on unixes, gettimeofday is used. The 461d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// granularity is in seconds on windows systems. 470ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kongdouble WallTimeInSeconds(); 480ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 491d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// Log a series of events, recording for each event the time elapsed 501d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// since the last event and since the creation of the object. 511d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// 521d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// The information is output to VLOG(3) upon destruction. A 531d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// name::Total event is added as the final event right before 541d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// destruction. 551d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// 561d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// Example usage: 571d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// 581d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// void Foo() { 591d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// EventLogger event_logger("Foo"); 601d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// Bar1(); 611d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// event_logger.AddEvent("Bar1") 621d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// Bar2(); 631d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// event_logger.AddEvent("Bar2") 641d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// Bar3(); 651d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// } 661d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// 671d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// Will produce output that looks like 681d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// 691d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// Foo 701d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// Bar1: time1 time1 711d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// Bar2: time2 time1 + time2; 721d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling// Total: time3 time1 + time2 + time3; 731d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberlingclass EventLogger { 741d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling public: 751d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling explicit EventLogger(const string& logger_name); 761d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling ~EventLogger(); 771d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling void AddEvent(const string& event_name); 781d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling 791d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling private: 801d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling const double start_time_; 811d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling double last_event_time_; 821d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling string events_; 831d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling}; 841d2624a10e2c559f8ba9ef89eaa30832c0a83a96Sascha Haeberling 850ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong} // namespace internal 860ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong} // namespace ceres 870ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong 880ae28bd5885b5daa526898fcf7c323dc2c3e1963Angus Kong#endif // CERES_INTERNAL_WALL_TIME_H_ 89