2008-03-10 00:13:47 +08:00
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// This file is part of Eigen, a lightweight C++ template library
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2009-05-23 02:25:33 +08:00
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// for linear algebra.
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2008-03-10 00:13:47 +08:00
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//
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2010-06-25 05:21:58 +08:00
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// Copyright (C) 2008-2010 Gael Guennebaud <gael.guennebaud@inria.fr>
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2009-10-30 03:47:56 +08:00
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// Copyright (C) 2009 Benoit Jacob <jacob.benoit.1@gmail.com>
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2008-03-10 00:13:47 +08:00
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//
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// Eigen is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 3 of the License, or (at your option) any later version.
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//
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// Alternatively, you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of
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// the License, or (at your option) any later version.
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//
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// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License and a copy of the GNU General Public License along with
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// Eigen. If not, see <http://www.gnu.org/licenses/>.
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2010-02-22 18:04:35 +08:00
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#ifndef EIGEN_BENCH_TIMERR_H
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#define EIGEN_BENCH_TIMERR_H
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2008-03-10 00:13:47 +08:00
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2009-12-01 16:20:05 +08:00
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#if defined(_WIN32) || defined(__CYGWIN__)
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2010-03-03 16:41:29 +08:00
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# ifndef NOMINMAX
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# define NOMINMAX
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# define EIGEN_BT_UNDEF_NOMINMAX
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# endif
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# ifndef WIN32_LEAN_AND_MEAN
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# define WIN32_LEAN_AND_MEAN
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# define EIGEN_BT_UNDEF_WIN32_LEAN_AND_MEAN
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# endif
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# include <windows.h>
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2011-09-17 16:57:27 +08:00
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#elif __APPLE__
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#include <CoreServices/CoreServices.h>
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#include <mach/mach_time.h>
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2009-12-01 16:20:05 +08:00
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#else
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2010-03-03 16:41:29 +08:00
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# include <unistd.h>
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2009-10-21 04:08:13 +08:00
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#endif
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2010-03-02 15:46:11 +08:00
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#include <Eigen/Core>
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2008-03-10 00:13:47 +08:00
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namespace Eigen
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{
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2010-02-22 18:04:35 +08:00
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enum {
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CPU_TIMER = 0,
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REAL_TIMER = 1
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};
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2008-03-10 00:13:47 +08:00
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/** Elapsed time timer keeping the best try.
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2009-10-30 03:47:56 +08:00
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*
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* On POSIX platforms we use clock_gettime with CLOCK_PROCESS_CPUTIME_ID.
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* On Windows we use QueryPerformanceCounter
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*
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* Important: on linux, you must link with -lrt
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2008-03-10 00:13:47 +08:00
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*/
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class BenchTimer
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{
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public:
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2010-02-22 18:04:35 +08:00
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BenchTimer()
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{
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2009-12-01 16:20:05 +08:00
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#if defined(_WIN32) || defined(__CYGWIN__)
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2009-10-21 04:08:13 +08:00
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LARGE_INTEGER freq;
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QueryPerformanceFrequency(&freq);
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m_frequency = (double)freq.QuadPart;
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#endif
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2010-02-22 18:04:35 +08:00
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reset();
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2009-10-21 04:08:13 +08:00
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}
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2008-03-10 00:13:47 +08:00
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~BenchTimer() {}
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2010-02-22 18:04:35 +08:00
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inline void reset()
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{
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m_bests.fill(1e9);
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2011-09-26 21:39:23 +08:00
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m_worsts.fill(0);
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2010-02-22 18:04:35 +08:00
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m_totals.setZero();
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}
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inline void start()
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{
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m_starts[CPU_TIMER] = getCpuTime();
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m_starts[REAL_TIMER] = getRealTime();
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}
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inline void stop()
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{
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m_times[CPU_TIMER] = getCpuTime() - m_starts[CPU_TIMER];
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m_times[REAL_TIMER] = getRealTime() - m_starts[REAL_TIMER];
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2010-06-01 19:57:38 +08:00
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#if EIGEN_VERSION_AT_LEAST(2,90,0)
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m_bests = m_bests.cwiseMin(m_times);
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2011-09-26 21:39:23 +08:00
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m_worsts = m_worsts.cwiseMax(m_times);
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#else
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m_bests(0) = std::min(m_bests(0),m_times(0));
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m_bests(1) = std::min(m_bests(1),m_times(1));
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2011-09-26 21:39:23 +08:00
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m_worsts(0) = std::max(m_worsts(0),m_times(0));
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m_worsts(1) = std::max(m_worsts(1),m_times(1));
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2010-06-01 19:57:38 +08:00
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#endif
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m_totals += m_times;
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2008-03-10 00:13:47 +08:00
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}
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2010-02-22 18:04:35 +08:00
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/** Return the elapsed time in seconds between the last start/stop pair
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2008-03-10 00:13:47 +08:00
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*/
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2011-09-26 21:39:23 +08:00
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inline double value(int TIMER = CPU_TIMER) const
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2008-03-10 00:13:47 +08:00
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{
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2010-02-22 18:04:35 +08:00
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return m_times[TIMER];
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2008-03-10 00:13:47 +08:00
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}
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2010-02-22 18:04:35 +08:00
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/** Return the best elapsed time in seconds
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*/
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2011-09-26 21:39:23 +08:00
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inline double best(int TIMER = CPU_TIMER) const
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{
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return m_bests[TIMER];
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}
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2011-09-26 21:39:23 +08:00
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/** Return the worst elapsed time in seconds
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*/
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inline double worst(int TIMER = CPU_TIMER) const
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{
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return m_worsts[TIMER];
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}
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2010-02-22 18:04:35 +08:00
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/** Return the total elapsed time in seconds.
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*/
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2011-09-26 21:39:23 +08:00
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inline double total(int TIMER = CPU_TIMER) const
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2010-02-22 18:04:35 +08:00
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{
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return m_totals[TIMER];
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}
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2011-09-26 21:39:23 +08:00
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inline double getCpuTime() const
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2008-03-10 00:13:47 +08:00
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{
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2011-04-19 20:37:04 +08:00
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#ifdef _WIN32
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2009-10-21 04:08:13 +08:00
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LARGE_INTEGER query_ticks;
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QueryPerformanceCounter(&query_ticks);
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return query_ticks.QuadPart/m_frequency;
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2011-09-17 16:57:27 +08:00
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#elif __APPLE__
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return double(mach_absolute_time())*1e-9;
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2009-10-21 04:08:13 +08:00
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#else
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2009-10-30 03:47:56 +08:00
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timespec ts;
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clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts);
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return double(ts.tv_sec) + 1e-9 * double(ts.tv_nsec);
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2009-10-21 04:08:13 +08:00
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#endif
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2008-03-10 00:13:47 +08:00
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}
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2011-09-26 21:39:23 +08:00
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inline double getRealTime() const
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2010-02-22 18:04:35 +08:00
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{
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2011-04-19 20:37:04 +08:00
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#ifdef _WIN32
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SYSTEMTIME st;
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GetSystemTime(&st);
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return (double)st.wSecond + 1.e-3 * (double)st.wMilliseconds;
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2011-09-17 16:57:27 +08:00
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#elif __APPLE__
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return double(mach_absolute_time())*1e-9;
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2010-02-22 18:04:35 +08:00
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#else
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2010-03-03 16:41:29 +08:00
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timespec ts;
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clock_gettime(CLOCK_REALTIME, &ts);
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return double(ts.tv_sec) + 1e-9 * double(ts.tv_nsec);
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2010-02-22 18:04:35 +08:00
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#endif
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}
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2008-03-10 00:13:47 +08:00
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protected:
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2009-12-01 16:20:05 +08:00
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#if defined(_WIN32) || defined(__CYGWIN__)
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2009-10-21 04:08:13 +08:00
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double m_frequency;
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#endif
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2010-02-22 18:04:35 +08:00
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Vector2d m_starts;
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Vector2d m_times;
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Vector2d m_bests;
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2011-09-26 21:39:23 +08:00
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Vector2d m_worsts;
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Vector2d m_totals;
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2008-03-10 00:13:47 +08:00
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2011-09-26 21:39:23 +08:00
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public:
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EIGEN_MAKE_ALIGNED_OPERATOR_NEW
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2008-03-10 00:13:47 +08:00
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};
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2010-02-22 18:04:35 +08:00
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#define BENCH(TIMER,TRIES,REP,CODE) { \
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TIMER.reset(); \
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for(int uglyvarname1=0; uglyvarname1<TRIES; ++uglyvarname1){ \
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TIMER.start(); \
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for(int uglyvarname2=0; uglyvarname2<REP; ++uglyvarname2){ \
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CODE; \
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} \
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TIMER.stop(); \
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} \
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}
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2008-03-10 00:13:47 +08:00
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}
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2010-03-03 16:41:29 +08:00
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// clean #defined tokens
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#ifdef EIGEN_BT_UNDEF_NOMINMAX
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# undef EIGEN_BT_UNDEF_NOMINMAX
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# undef NOMINMAX
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#endif
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#ifdef EIGEN_BT_UNDEF_WIN32_LEAN_AND_MEAN
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# undef EIGEN_BT_UNDEF_WIN32_LEAN_AND_MEAN
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# undef WIN32_LEAN_AND_MEAN
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#endif
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2010-02-22 18:04:35 +08:00
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#endif // EIGEN_BENCH_TIMERR_H
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