diff options
Diffstat (limited to 'gr-qtgui/lib/highResTimeFunctions.h')
| -rw-r--r-- | gr-qtgui/lib/highResTimeFunctions.h | 315 |
1 files changed, 26 insertions, 289 deletions
diff --git a/gr-qtgui/lib/highResTimeFunctions.h b/gr-qtgui/lib/highResTimeFunctions.h index 251bbad8b..6b3844901 100644 --- a/gr-qtgui/lib/highResTimeFunctions.h +++ b/gr-qtgui/lib/highResTimeFunctions.h @@ -1,299 +1,36 @@ +/* -*- c++ -*- */ +/* + * Copyright 2011 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 GNU Radio; see the file COPYING. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, + * Boston, MA 02110-1301, USA. + */ + #ifndef HIGH_RES_TIME_FUNCTIONS_H #define HIGH_RES_TIME_FUNCTIONS_H -#include <ctime> -#include <sys/time.h> -#include <cmath> -/* Requires the librt and libm libraries */ - -static const long NSEC_PER_SEC = 1000000000L; - -static inline bool -timespec_greater(const struct timespec* t1, - const struct timespec* t0) -{ - return ((t1->tv_sec > t0->tv_sec) || - ((t1->tv_sec == t0->tv_sec) && - (t1->tv_nsec > t0->tv_nsec))); -} - -static inline bool -timespec_greater(const struct timespec t1, - const struct timespec t0) -{ - return ((t1.tv_sec > t0.tv_sec) || - ((t1.tv_sec == t0.tv_sec) && - (t1.tv_nsec > t0.tv_nsec))); -} - -static inline bool -timespec_less(const struct timespec* t1, - const struct timespec* t0) -{ - return ((t1->tv_sec < t0->tv_sec) || - ((t1->tv_sec == t0->tv_sec) && - (t1->tv_nsec < t0->tv_nsec))); -} - -static inline bool -timespec_less(const struct timespec t1, - const struct timespec t0) -{ - return ((t1.tv_sec < t0.tv_sec) || - ((t1.tv_sec == t0.tv_sec) && - (t1.tv_nsec < t0.tv_nsec))); -} - -static inline bool -timespec_equal(const struct timespec* t1, - const struct timespec* t0) -{ - return ((t1->tv_sec == t0->tv_sec) && - (t1->tv_nsec == t0->tv_nsec)); -} - -static inline bool -timespec_equal(const struct timespec t1, - const struct timespec t0) -{ - return ((t1.tv_sec == t0.tv_sec) && - (t1.tv_nsec == t0.tv_nsec)); -} - -static inline void -timespec_reset(struct timespec* ret) -{ - ret->tv_sec = 0; - ret->tv_nsec = 0; -} - -static inline void -set_normalized_timespec(struct timespec *ts, - time_t sec, long nsec) -{ - while (nsec > NSEC_PER_SEC) { - nsec -= NSEC_PER_SEC; - ++sec; - } - while(nsec < 0) { - nsec += NSEC_PER_SEC; - --sec; - } - ts->tv_sec = sec; - ts->tv_nsec = nsec; -} - -static inline struct timespec -convert_to_timespec(const double timeValue) -{ - struct timespec ret; - double seconds = 0; - long nsec = static_cast<long>(modf(timeValue, &seconds) * - static_cast<double>(NSEC_PER_SEC)); - time_t sec = static_cast<time_t>(seconds); - - set_normalized_timespec(&ret, sec, nsec); - - return ret; -} - -static inline double -convert_from_timespec(const timespec actual) -{ - return (static_cast<double>(actual.tv_sec) + - (static_cast<double>(actual.tv_nsec) / - static_cast<double>(NSEC_PER_SEC))); -} - -static inline void -timespec_add(struct timespec *ret, - const struct timespec* t1, - const struct timespec* t0) -{ - time_t sec = t1->tv_sec + t0->tv_sec; - long nsec = t1->tv_nsec + t0->tv_nsec; +#include <gruel/high_res_timer.h> - set_normalized_timespec(ret, sec, nsec); -} - -static inline void -timespec_add(struct timespec *ret, - const struct timespec t1, - const struct timespec t0) -{ - return timespec_add(ret, &t1, &t0); -} - -static inline struct timespec -timespec_add(const struct timespec t1, - const struct timespec t0) -{ - struct timespec ret; - timespec_add(&ret, &t1, &t0); - return ret; -} - -static inline struct timespec -timespec_add(const struct timespec t1, - const double time0) -{ - struct timespec ret; - struct timespec t0; - t0 = convert_to_timespec(time0); - - timespec_add(&ret, &t1, &t0); - - return ret; -} +typedef gruel::high_res_timer_type highres_timespec; -static inline void -timespec_subtract(struct timespec *ret, - const struct timespec* t1, - const struct timespec* t0) -{ - time_t sec = t1->tv_sec - t0->tv_sec; - long nsec = t1->tv_nsec - t0->tv_nsec; - - set_normalized_timespec(ret, sec, nsec); -} - -static inline void -timespec_subtract(struct timespec *ret, - const struct timespec t1, - const struct timespec t0) -{ - return timespec_subtract(ret, &t1, &t0); -} - -static inline struct timespec -timespec_subtract(const struct timespec t1, - const struct timespec t0) -{ - struct timespec ret; - timespec_subtract(&ret, &t1, &t0); - return ret; -} - -static inline struct timespec -timespec_subtract(const struct timespec t1, - const double time0) -{ - struct timespec ret; - struct timespec t0; - t0 = convert_to_timespec(time0); - - timespec_subtract(&ret, &t1, &t0); - - return ret; -} - -static inline double -diff_timespec(struct timespec* ret, - const struct timespec *t1, - const struct timespec* t0) -{ - struct timespec actual; - time_t sec = 0; - long nsec = 0; - - if(timespec_greater(t1, t0)){ - sec = t1->tv_sec - t0->tv_sec; - nsec = t1->tv_nsec - t0->tv_nsec; - - set_normalized_timespec(&actual, sec, nsec); - - if(ret != NULL){ - ret->tv_sec = actual.tv_sec; - ret->tv_nsec = actual.tv_nsec; - } - - return convert_from_timespec(actual); - } - else{ - sec = t0->tv_sec - t1->tv_sec; - nsec = t0->tv_nsec - t1->tv_nsec; - - // Do nothing with the ret value as the ret value - // would have to store a negative, which it can't. - - set_normalized_timespec(&actual, sec, nsec); - - return (-convert_from_timespec(actual)); - } -} - -static inline double -diff_timespec(struct timespec* ret, - const struct timespec t1, - const struct timespec t0) -{ - return diff_timespec(ret, &t1, &t0); -} - -static inline double -diff_timespec(const struct timespec t1, - const struct timespec t0) -{ - return diff_timespec(NULL, &t1, &t0); -} - - -static inline double -diff_timespec(const struct timespec* t1, - const struct timespec* t0) -{ - return diff_timespec(NULL, t1, t0); -} - - -#ifdef CLOCK_REALTIME -// If we can use clock_gettime, use it; -// otherwise, use gettimeofday -static inline void -get_highres_clock(struct timespec* ret) -{ - if(clock_gettime(CLOCK_REALTIME, ret) != 0){ - // Unable to get high resolution time - - // fail over to low resolution time - timeval lowResTime; - gettimeofday(&lowResTime, NULL); - ret->tv_sec = lowResTime.tv_sec; - ret->tv_nsec = lowResTime.tv_usec*1000; - } -} - -#else - -// Trick timer functions into thinking it has an nsec timer -// but only use the low resolution (usec) timer. -static inline void -get_highres_clock(struct timespec* ret) -{ - timeval lowResTime; - gettimeofday(&lowResTime, NULL); - ret->tv_sec = lowResTime.tv_sec; - ret->tv_nsec = lowResTime.tv_usec*1000; -} -#endif - -static inline struct timespec +static inline highres_timespec get_highres_clock() { - struct timespec ret; - get_highres_clock(&ret); - return ret; -} - -static inline bool -timespec_empty(const struct timespec* ret) -{ - return ( (ret->tv_sec == 0 ) && (ret->tv_nsec == 0) ); -} - -static inline bool -timespec_empty(const struct timespec ret) -{ - return timespec_empty(&ret); + return gruel::high_res_timer_now(); } #endif /* HIGH_RES_TIME_FUNCTIONS_H */ |