GNU Radio 3.5.3.2 C++ API
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00001 /* 00002 * Copyright 2011 Free Software Foundation, Inc. 00003 * 00004 * This file is part of GNU Radio 00005 * 00006 * GNU Radio is free software; you can redistribute it and/or modify 00007 * it under the terms of the GNU General Public License as published by 00008 * the Free Software Foundation; either version 3, or (at your option) 00009 * any later version. 00010 * 00011 * GNU Radio is distributed in the hope that it will be useful, 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 * GNU General Public License for more details. 00015 * 00016 * You should have received a copy of the GNU General Public License along 00017 * with this program; if not, write to the Free Software Foundation, Inc., 00018 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 00019 */ 00020 00021 #ifndef INCLUDED_GRUEL_HIGH_RES_TIMER_H 00022 #define INCLUDED_GRUEL_HIGH_RES_TIMER_H 00023 00024 namespace gruel { 00025 //! Typedef for the timer tick count 00026 typedef signed long long high_res_timer_type; 00027 00028 //! Get the current time in ticks 00029 high_res_timer_type high_res_timer_now(void); 00030 00031 //! Get the number of ticks per second 00032 high_res_timer_type high_res_timer_tps(void); 00033 00034 //! Get the tick count at the epoch 00035 high_res_timer_type high_res_timer_epoch(void); 00036 00037 } /* namespace gruel */ 00038 00039 //////////////////////////////////////////////////////////////////////// 00040 // Use architecture defines to determine the implementation 00041 //////////////////////////////////////////////////////////////////////// 00042 #if defined(linux) || defined(__linux) || defined(__linux__) 00043 #define GRUEL_HRT_USE_CLOCK_GETTIME 00044 #elif defined(_WIN32) || defined(__WIN32__) || defined(WIN32) 00045 #define GRUEL_HRT_USE_QUERY_PERFORMANCE_COUNTER 00046 #elif defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__) 00047 #define GRUEL_HRT_USE_MACH_ABSOLUTE_TIME 00048 #elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) 00049 #define GRUEL_HRT_USE_CLOCK_GETTIME 00050 #else 00051 #define GRUEL_HRT_USE_MICROSEC_CLOCK 00052 #endif 00053 00054 //////////////////////////////////////////////////////////////////////// 00055 #ifdef GRUEL_HRT_USE_CLOCK_GETTIME 00056 #include <ctime> 00057 00058 inline gruel::high_res_timer_type gruel::high_res_timer_now(void){ 00059 timespec ts; 00060 clock_gettime(CLOCK_MONOTONIC, &ts); 00061 return ts.tv_sec*high_res_timer_tps() + ts.tv_nsec; 00062 } 00063 00064 inline gruel::high_res_timer_type gruel::high_res_timer_tps(void){ 00065 return 1000000000UL; 00066 } 00067 #endif /* GRUEL_HRT_USE_CLOCK_GETTIME */ 00068 00069 //////////////////////////////////////////////////////////////////////// 00070 #ifdef GRUEL_HRT_USE_MACH_ABSOLUTE_TIME 00071 #include <mach/mach_time.h> 00072 00073 inline gruel::high_res_timer_type gruel::high_res_timer_now(void){ 00074 return mach_absolute_time(); 00075 } 00076 00077 inline gruel::high_res_timer_type gruel::high_res_timer_tps(void){ 00078 mach_timebase_info_data_t info; 00079 mach_timebase_info(&info); 00080 return gruel::high_res_timer_type(info.numer*1000000000UL)/info.denom; 00081 } 00082 #endif 00083 00084 //////////////////////////////////////////////////////////////////////// 00085 #ifdef GRUEL_HRT_USE_QUERY_PERFORMANCE_COUNTER 00086 #include <Windows.h> 00087 00088 inline gruel::high_res_timer_type gruel::high_res_timer_now(void){ 00089 LARGE_INTEGER counts; 00090 QueryPerformanceCounter(&counts); 00091 return counts.QuadPart; 00092 } 00093 00094 inline gruel::high_res_timer_type gruel::high_res_timer_tps(void){ 00095 LARGE_INTEGER freq; 00096 QueryPerformanceFrequency(&freq); 00097 return freq.QuadPart; 00098 } 00099 #endif 00100 00101 //////////////////////////////////////////////////////////////////////// 00102 #ifdef GRUEL_HRT_USE_MICROSEC_CLOCK 00103 #include <boost/date_time/posix_time/posix_time.hpp> 00104 00105 inline gruel::high_res_timer_type gruel::high_res_timer_now(void){ 00106 static const boost::posix_time::ptime epoch(boost::posix_time::from_time_t(0)); 00107 return (boost::posix_time::microsec_clock::universal_time() - epoch).ticks(); 00108 } 00109 00110 inline gruel::high_res_timer_type gruel::high_res_timer_tps(void){ 00111 return boost::posix_time::time_duration::ticks_per_second(); 00112 } 00113 #endif 00114 00115 //////////////////////////////////////////////////////////////////////// 00116 #include <boost/date_time/posix_time/posix_time.hpp> 00117 00118 inline gruel::high_res_timer_type gruel::high_res_timer_epoch(void){ 00119 static const double hrt_ticks_per_utc_ticks = gruel::high_res_timer_tps()/double(boost::posix_time::time_duration::ticks_per_second()); 00120 boost::posix_time::time_duration utc = boost::posix_time::microsec_clock::universal_time() - boost::posix_time::from_time_t(0); 00121 return gruel::high_res_timer_now() - utc.ticks()*hrt_ticks_per_utc_ticks; 00122 } 00123 00124 #endif /* INCLUDED_GRUEL_HIGH_RES_TIMER_H */