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/* -*- c++ -*- */
/*
* Copyright 2011,2013 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio 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 3, or (at your option)
* any later version.
*
* GNU Radio 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef INCLUDED_GNURADIO_HIGH_RES_TIMER_H
#define INCLUDED_GNURADIO_HIGH_RES_TIMER_H
namespace gr {
//! Typedef for the timer tick count
typedef signed long long high_res_timer_type;
//! Get the current time in ticks
high_res_timer_type high_res_timer_now(void);
//! Get the number of ticks per second
high_res_timer_type high_res_timer_tps(void);
//! Get the tick count at the epoch
high_res_timer_type high_res_timer_epoch(void);
} /* namespace gr */
////////////////////////////////////////////////////////////////////////
// Use architecture defines to determine the implementation
////////////////////////////////////////////////////////////////////////
#if defined(linux) || defined(__linux) || defined(__linux__)
#define GNURADIO_HRT_USE_CLOCK_GETTIME
#elif defined(_WIN32) || defined(__WIN32__) || defined(WIN32)
#define GNURADIO_HRT_USE_QUERY_PERFORMANCE_COUNTER
#elif defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__)
#define GNURADIO_HRT_USE_MACH_ABSOLUTE_TIME
#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
#define GNURADIO_HRT_USE_CLOCK_GETTIME
#else
#define GNURADIO_HRT_USE_MICROSEC_CLOCK
#endif
////////////////////////////////////////////////////////////////////////
#ifdef GNURADIO_HRT_USE_CLOCK_GETTIME
#include <ctime>
inline gr::high_res_timer_type gr::high_res_timer_now(void){
timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
return ts.tv_sec*high_res_timer_tps() + ts.tv_nsec;
}
inline gr::high_res_timer_type gr::high_res_timer_tps(void){
return 1000000000UL;
}
#endif /* GNURADIO_HRT_USE_CLOCK_GETTIME */
////////////////////////////////////////////////////////////////////////
#ifdef GNURADIO_HRT_USE_MACH_ABSOLUTE_TIME
#include <mach/mach_time.h>
inline gr::high_res_timer_type gr::high_res_timer_now(void){
return mach_absolute_time();
}
inline gr::high_res_timer_type gr::high_res_timer_tps(void){
mach_timebase_info_data_t info;
mach_timebase_info(&info);
return gr::high_res_timer_type(info.numer*1000000000UL)/info.denom;
}
#endif
////////////////////////////////////////////////////////////////////////
#ifdef GNURADIO_HRT_USE_QUERY_PERFORMANCE_COUNTER
#include <Windows.h>
inline gr::high_res_timer_type gr::high_res_timer_now(void){
LARGE_INTEGER counts;
QueryPerformanceCounter(&counts);
return counts.QuadPart;
}
inline gr::high_res_timer_type gr::high_res_timer_tps(void){
LARGE_INTEGER freq;
QueryPerformanceFrequency(&freq);
return freq.QuadPart;
}
#endif
////////////////////////////////////////////////////////////////////////
#ifdef GNURADIO_HRT_USE_MICROSEC_CLOCK
#include <boost/date_time/posix_time/posix_time.hpp>
inline gr::high_res_timer_type gr::high_res_timer_now(void){
static const boost::posix_time::ptime epoch(boost::posix_time::from_time_t(0));
return (boost::posix_time::microsec_clock::universal_time() - epoch).ticks();
}
inline gr::high_res_timer_type gr::high_res_timer_tps(void){
return boost::posix_time::time_duration::ticks_per_second();
}
#endif
////////////////////////////////////////////////////////////////////////
#include <boost/date_time/posix_time/posix_time.hpp>
inline gr::high_res_timer_type gr::high_res_timer_epoch(void){
static const double hrt_ticks_per_utc_ticks = gr::high_res_timer_tps()/double(boost::posix_time::time_duration::ticks_per_second());
boost::posix_time::time_duration utc = boost::posix_time::microsec_clock::universal_time() - boost::posix_time::from_time_t(0);
return gr::high_res_timer_now() - utc.ticks()*hrt_ticks_per_utc_ticks;
}
#endif /* INCLUDED_GNURADIO_HIGH_RES_TIMER_H */
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