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high_res_timer.h
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/* -*- c++ -*- */
/*
* Copyright 2011,2013 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifndef INCLUDED_GNURADIO_HIGH_RES_TIMER_H
#define INCLUDED_GNURADIO_HIGH_RES_TIMER_H
#include <gnuradio/api.h>
#include <chrono>
#include <ratio>
////////////////////////////////////////////////////////////////////////
// Use architecture defines to determine the implementation
////////////////////////////////////////////////////////////////////////
#if defined(linux) || defined(__linux) || defined(__linux__)
#define GNURADIO_HRT_USE_CLOCK_GETTIME
#include <ctime>
#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
#include <ctime>
#else
#define GNURADIO_HRT_USE_GENERIC_CLOCK
#endif
////////////////////////////////////////////////////////////////////////
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 current time in ticks - for performance monitoring
high_res_timer_type high_res_timer_now_perfmon(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);
#ifdef GNURADIO_HRT_USE_CLOCK_GETTIME
//! storage for high res timer type
GR_RUNTIME_API extern clockid_t high_res_timer_source;
#endif
} /* namespace gr */
////////////////////////////////////////////////////////////////////////
#ifdef GNURADIO_HRT_USE_CLOCK_GETTIME
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_now_perfmon(void)
{
timespec ts;
clock_gettime(high_res_timer_source, &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_now_perfmon(void)
{
return gr::high_res_timer_now();
}
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.denom * 1000000000UL) / info.numer;
}
#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_now_perfmon(void)
{
return gr::high_res_timer_now();
}
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_GENERIC_CLOCK
inline gr::high_res_timer_type gr::high_res_timer_now(void)
{
return std::chrono::duration<gr::high_res_timer_type, std::nano>(
std::chrono::steady_clock::now().time_since_epoch())
.count();
}
inline gr::high_res_timer_type gr::high_res_timer_now_perfmon(void)
{
return gr::high_res_timer_now();
}
inline gr::high_res_timer_type gr::high_res_timer_tps(void) { return 1000000000UL; }
#endif
////////////////////////////////////////////////////////////////////////
inline gr::high_res_timer_type gr::high_res_timer_epoch(void)
{
static const double ticks_per_second = gr::high_res_timer_tps();
const double seconds_since_epoch =
std::chrono::duration<double>(std::chrono::system_clock::now().time_since_epoch())
.count();
return gr::high_res_timer_now() - seconds_since_epoch * ticks_per_second;
}
#endif /* INCLUDED_GNURADIO_HIGH_RES_TIMER_H */
api.h
GR_RUNTIME_API
#define GR_RUNTIME_API
Definition gnuradio-runtime/include/gnuradio/api.h:18
gr
GNU Radio logging wrapper.
Definition basic_block.h:29
gr::high_res_timer_now
high_res_timer_type high_res_timer_now(void)
Get the current time in ticks.
Definition high_res_timer.h:128
gr::high_res_timer_tps
high_res_timer_type high_res_timer_tps(void)
Get the number of ticks per second.
Definition high_res_timer.h:140
gr::high_res_timer_now_perfmon
high_res_timer_type high_res_timer_now_perfmon(void)
Get the current time in ticks - for performance monitoring.
Definition high_res_timer.h:135
gr::high_res_timer_epoch
high_res_timer_type high_res_timer_epoch(void)
Get the tick count at the epoch.
Definition high_res_timer.h:144
gr::high_res_timer_type
signed long long high_res_timer_type
Typedef for the timer tick count.
Definition high_res_timer.h:40