engines/gig/Profiler.cpp

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the Free Software           *
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *
 *   MA  02111-1307  USA                                                   *
 ***************************************************************************/

#include "Profiler.h"
#include <time.h>

namespace LinuxSampler { namespace gig {

        unsigned long long Profiler::profilingSamples = 0;
        unsigned long long Profiler::profilingTime = 0;
        double Profiler::tsPerSecond = 0;
        bool Profiler::bEnabled = false;

        void Profiler::Reset()
        {
                profilingSamples = 0;
                profilingTime = 0;
        }

        void Profiler::enable() {
                bEnabled = true;
        }

        void Profiler::Calibrate( void )
        {
                clock_t start_time = clock();
                RTMath::time_stamp_t start_clocks = Stamp();
                volatile int a = 1;
                volatile int b = 1;
                for (volatile int i = 0; i < 100000000; i++)
                {
                        a += b;
                }
                clock_t stop_time = clock();
                RTMath::time_stamp_t stop_clocks = Stamp();
                double diff_ticks = (stop_clocks - start_clocks);
                double diff_time = ((stop_time - start_time) / (double(CLOCKS_PER_SEC)));
                tsPerSecond = diff_ticks / diff_time;
        }

        unsigned int Profiler::GetBogoVoices(unsigned int SamplingFreq)
        {
                if (profilingSamples == 0) return 0;
                double avgTicks = ((double) profilingTime) / ((double) profilingSamples);
                unsigned int samplesPerSecond = (unsigned int) (tsPerSecond / avgTicks);
                unsigned int bogoVoices = samplesPerSecond / SamplingFreq;
                return bogoVoices;
        }

}} // namespace LinuxSampler::gig
1	senkov	326	/***************************************************************************
2			* *
3			* LinuxSampler - modular, streaming capable sampler *
4			* *
5			* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6			* *
7			* This program is free software; you can redistribute it and/or modify *
8			* it under the terms of the GNU General Public License as published by *
9			* the Free Software Foundation; either version 2 of the License, or *
10			* (at your option) any later version. *
11			* *
12			* This program is distributed in the hope that it will be useful, *
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of *
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
15			* GNU General Public License for more details. *
16			* *
17			* You should have received a copy of the GNU General Public License *
18			* along with this program; if not, write to the Free Software *
19			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
20			* MA 02111-1307 USA *
21			***************************************************************************/
22
23			#include "Profiler.h"
24			#include <time.h>
25
26			namespace LinuxSampler { namespace gig {
27
28			unsigned long long Profiler::profilingSamples = 0;
29			unsigned long long Profiler::profilingTime = 0;
30	schoenebeck	328	double Profiler::tsPerSecond = 0;
31	schoenebeck	770	bool Profiler::bEnabled = false;
32	senkov	326
33	schoenebeck	1552	void Profiler::Reset()
34			{
35			profilingSamples = 0;
36			profilingTime = 0;
37			}
38
39			void Profiler::enable() {
40			bEnabled = true;
41			}
42
43	senkov	326	void Profiler::Calibrate( void )
44			{
45			clock_t start_time = clock();
46	schoenebeck	328	RTMath::time_stamp_t start_clocks = Stamp();
47	senkov	326	volatile int a = 1;
48			volatile int b = 1;
49			for (volatile int i = 0; i < 100000000; i++)
50			{
51			a += b;
52			}
53			clock_t stop_time = clock();
54	schoenebeck	328	RTMath::time_stamp_t stop_clocks = Stamp();
55			double diff_ticks = (stop_clocks - start_clocks);
56	senkov	326	double diff_time = ((stop_time - start_time) / (double(CLOCKS_PER_SEC)));
57	schoenebeck	328	tsPerSecond = diff_ticks / diff_time;
58	senkov	326	}
59
60			unsigned int Profiler::GetBogoVoices(unsigned int SamplingFreq)
61			{
62			if (profilingSamples == 0) return 0;
63	schoenebeck	328	double avgTicks = ((double) profilingTime) / ((double) profilingSamples);
64			unsigned int samplesPerSecond = (unsigned int) (tsPerSecond / avgTicks);
65	senkov	326	unsigned int bogoVoices = samplesPerSecond / SamplingFreq;
66			return bogoVoices;
67			}
68
69			}} // namespace LinuxSampler::gig