| // Ceres Solver - A fast non-linear least squares minimizer |
| // Copyright 2015 Google Inc. All rights reserved. |
| // http://ceres-solver.org/ |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are met: |
| // |
| // * Redistributions of source code must retain the above copyright notice, |
| // this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above copyright notice, |
| // this list of conditions and the following disclaimer in the documentation |
| // and/or other materials provided with the distribution. |
| // * Neither the name of Google Inc. nor the names of its contributors may be |
| // used to endorse or promote products derived from this software without |
| // specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| // POSSIBILITY OF SUCH DAMAGE. |
| // |
| // Author: strandmark@google.com (Petter Strandmark) |
| |
| #ifndef CERES_INTERNAL_WALL_TIME_H_ |
| #define CERES_INTERNAL_WALL_TIME_H_ |
| |
| #include <map> |
| #include <string> |
| #include "ceres/internal/port.h" |
| #include "ceres/stringprintf.h" |
| #include "glog/logging.h" |
| |
| namespace ceres { |
| namespace internal { |
| |
| // Returns time, in seconds, from some arbitrary starting point. If |
| // OpenMP is available then the high precision openmp_get_wtime() |
| // function is used. Otherwise on unixes, gettimeofday is used. The |
| // granularity is in seconds on windows systems. |
| double WallTimeInSeconds(); |
| |
| // Log a series of events, recording for each event the time elapsed |
| // since the last event and since the creation of the object. |
| // |
| // The information is output to VLOG(3) upon destruction. A |
| // name::Total event is added as the final event right before |
| // destruction. |
| // |
| // Example usage: |
| // |
| // void Foo() { |
| // EventLogger event_logger("Foo"); |
| // Bar1(); |
| // event_logger.AddEvent("Bar1") |
| // Bar2(); |
| // event_logger.AddEvent("Bar2") |
| // Bar3(); |
| // } |
| // |
| // Will produce output that looks like |
| // |
| // Foo |
| // Bar1: time1 time1 |
| // Bar2: time2 time1 + time2; |
| // Total: time3 time1 + time2 + time3; |
| class EventLogger { |
| public: |
| explicit EventLogger(const std::string& logger_name); |
| ~EventLogger(); |
| void AddEvent(const std::string& event_name); |
| |
| private: |
| const double start_time_; |
| double last_event_time_; |
| std::string events_; |
| }; |
| |
| } // namespace internal |
| } // namespace ceres |
| |
| #endif // CERES_INTERNAL_WALL_TIME_H_ |