| // Ceres Solver - A fast non-linear least squares minimizer | |
| // Copyright 2024 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 | |
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| // 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_EVENT_LOGGER_H_ | |
| #define CERES_INTERNAL_EVENT_LOGGER_H_ | |
| #include <string> | |
| #include <string_view> | |
| #include "absl/time/time.h" | |
| #include "ceres/internal/disable_warnings.h" | |
| #include "ceres/internal/export.h" | |
| namespace ceres::internal { | |
| // 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 CERES_NO_EXPORT EventLogger { | |
| public: | |
| explicit EventLogger(std::string_view logger_name); | |
| ~EventLogger(); | |
| void AddEvent(std::string_view event_name); | |
| private: | |
| const absl::Time start_time_; | |
| absl::Time last_event_time_; | |
| std::string events_; | |
| }; | |
| } // namespace ceres::internal | |
| #include "ceres/internal/reenable_warnings.h" | |
| #endif // CERES_INTERNAL_EVENT_LOGGER_H_ |