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	/***************************************************************************
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	double Profiler::tsPerSecond = 0;
31	bool Profiler::bEnabled = false;
32
33	void Profiler::Reset()
34	{
35	profilingSamples = 0;
36	profilingTime = 0;
37	}
38
39	void Profiler::enable() {
40	bEnabled = true;
41	}
42
43	void Profiler::Calibrate( void )
44	{
45	clock_t start_time = clock();
46	RTMath::time_stamp_t start_clocks = Stamp();
47	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	RTMath::time_stamp_t stop_clocks = Stamp();
55	double diff_ticks = (stop_clocks - start_clocks);
56	double diff_time = ((stop_time - start_time) / (double(CLOCKS_PER_SEC)));
57	tsPerSecond = diff_ticks / diff_time;
58	}
59
60	unsigned int Profiler::GetBogoVoices(unsigned int SamplingFreq)
61	{
62	if (profilingSamples == 0) return 0;
63	double avgTicks = ((double) profilingTime) / ((double) profilingSamples);
64	unsigned int samplesPerSecond = (unsigned int) (tsPerSecond / avgTicks);
65	unsigned int bogoVoices = samplesPerSecond / SamplingFreq;
66	return bogoVoices;
67	}
68
69	}} // namespace LinuxSampler::gig