mirror of
https://github.com/ceres-solver/ceres-solver.git
synced 2026-08-29 16:40:38 +08:00
Keir Mierle
7492b0d8de
Since Ceres is moving to using GitHub for issues, and the Google Code URL in the current copyright header will soon become invalid, update all the headers. Change-Id: I1fce70375d1bcf098591f07b4d8f01a5c1e0789c
89 lines
3.1 KiB
C++
89 lines
3.1 KiB
C++
// Ceres Solver - A fast non-linear least squares minimizer
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// Copyright 2015 Google Inc. All rights reserved.
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// http://ceres-solver.org/
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of Google Inc. nor the names of its contributors may be
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// used to endorse or promote products derived from this software without
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// specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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// Author: strandmark@google.com (Petter Strandmark)
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#ifndef CERES_INTERNAL_WALL_TIME_H_
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#define CERES_INTERNAL_WALL_TIME_H_
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#include <map>
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#include <string>
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#include "ceres/internal/port.h"
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#include "ceres/stringprintf.h"
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#include "glog/logging.h"
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namespace ceres {
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namespace internal {
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// Returns time, in seconds, from some arbitrary starting point. If
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// OpenMP is available then the high precision openmp_get_wtime()
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// function is used. Otherwise on unixes, gettimeofday is used. The
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// granularity is in seconds on windows systems.
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double WallTimeInSeconds();
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// Log a series of events, recording for each event the time elapsed
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// since the last event and since the creation of the object.
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//
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// The information is output to VLOG(3) upon destruction. A
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// name::Total event is added as the final event right before
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// destruction.
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//
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// Example usage:
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//
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// void Foo() {
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// EventLogger event_logger("Foo");
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// Bar1();
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// event_logger.AddEvent("Bar1")
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// Bar2();
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// event_logger.AddEvent("Bar2")
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// Bar3();
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// }
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//
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// Will produce output that looks like
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//
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// Foo
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// Bar1: time1 time1
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// Bar2: time2 time1 + time2;
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// Total: time3 time1 + time2 + time3;
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class EventLogger {
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public:
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explicit EventLogger(const std::string& logger_name);
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~EventLogger();
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void AddEvent(const std::string& event_name);
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private:
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const double start_time_;
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double last_event_time_;
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std::string events_;
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};
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} // namespace internal
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} // namespace ceres
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#endif // CERES_INTERNAL_WALL_TIME_H_
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