Marsyas
0.6.0-alpha
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00001 /* 00002 ** Copyright (C) 1998-2013 George Tzanetakis <gtzan@cs.uvic.ca> 00003 ** 00004 ** This program is free software; you can redistribute it and/or modify 00005 ** it under the terms of the GNU General Public License as published by 00006 ** the Free Software Foundation; either version 2 of the License, or 00007 ** (at your option) any later version. 00008 ** 00009 ** This program is distributed in the hope that it will be useful, 00010 ** but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00012 ** GNU General Public License for more details. 00013 ** 00014 ** You should have received a copy of the GNU General Public License 00015 ** along with this program; if not, write to the Free Software 00016 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 00017 */ 00018 00019 // WARNING: Do not install this header, because it is platform-specific. 00020 00021 #ifndef MARSYAS_DEBUG_TIMER_INCLUDED 00022 #define MARSYAS_DEBUG_TIMER_INCLUDED 00023 00024 #include <marsyas/common_source.h> 00025 #include <marsyas/export.h> 00026 00027 #if defined(MARSYAS_LINUX) 00028 00029 #include <time.h> 00030 00031 namespace Marsyas { namespace Debug { 00032 00033 class Timer 00034 { 00035 timespec m_start_cpu_time; 00036 timespec m_start_real_time; 00037 timespec m_cpu_time; 00038 timespec m_real_time; 00039 00040 public: 00041 Timer() 00042 {} 00043 00044 void start() 00045 { 00046 clock_gettime(CLOCK_THREAD_CPUTIME_ID, &m_start_cpu_time); 00047 clock_gettime(CLOCK_REALTIME, &m_start_real_time); 00048 } 00049 00050 void measure() 00051 { 00052 clock_gettime(CLOCK_THREAD_CPUTIME_ID, &m_cpu_time); 00053 clock_gettime(CLOCK_REALTIME, &m_real_time); 00054 } 00055 00056 double cpuTime() 00057 { 00058 return difference(m_cpu_time, m_start_cpu_time); 00059 } 00060 00061 double realTime() 00062 { 00063 return difference(m_real_time, m_start_real_time); 00064 } 00065 00066 private: 00067 double difference( const timespec &t, const timespec &t0 ) 00068 { 00069 double seconds = t.tv_sec - t0.tv_sec; 00070 long nanoseconds = t.tv_nsec - t0.tv_nsec; 00071 seconds += (double) nanoseconds * 10.0e-10; 00072 return seconds; 00073 } 00074 }; 00075 00076 }} // namespace Marsyas::Debug 00077 00078 #else 00079 00080 #include <chrono> 00081 00082 namespace Marsyas { namespace Debug { 00083 00084 using namespace std::chrono; 00085 00086 class marsyas_EXPORT Timer 00087 { 00088 high_resolution_clock::time_point m_real_time_start; 00089 high_resolution_clock::time_point m_real_time_measure; 00090 public: 00091 void start() 00092 { 00093 m_real_time_start = high_resolution_clock::now(); 00094 } 00095 void measure() 00096 { 00097 m_real_time_measure = high_resolution_clock::now(); 00098 } 00099 double cpuTime() 00100 { 00101 return 0.0; 00102 } 00103 double realTime() 00104 { 00105 duration<double> m_real_time_dur = 00106 m_real_time_measure - m_real_time_start; 00107 return m_real_time_dur.count(); 00108 } 00109 }; 00110 00111 }} // namespace Marsyas::Debug 00112 00113 #endif 00114 00115 #endif // MARSYAS_DEBUG_TIMER_INCLUDED