diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/ouroboros/CMakeLists.txt | 1 | ||||
| -rw-r--r-- | include/ouroboros/time_utils.h | 80 |
2 files changed, 81 insertions, 0 deletions
diff --git a/include/ouroboros/CMakeLists.txt b/include/ouroboros/CMakeLists.txt index 6e49ee04..245187e9 100644 --- a/include/ouroboros/CMakeLists.txt +++ b/include/ouroboros/CMakeLists.txt @@ -11,6 +11,7 @@ set(HEADER_FILES instance_name.h irm.h qos.h + time_utils.h ) install(FILES ${HEADER_FILES} DESTINATION include/ouroboros) diff --git a/include/ouroboros/time_utils.h b/include/ouroboros/time_utils.h new file mode 100644 index 00000000..320cb6f1 --- /dev/null +++ b/include/ouroboros/time_utils.h @@ -0,0 +1,80 @@ +/* + * Ouroboros - Copyright (C) 2016 + * + * Time utilities + * + * Dimitri Staessens <dimitri.staessens@intec.ugent.be> + * + * This program 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 2 of the License, or + * (at your option) any later version. + * + * This program 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef OUROBOROS_TIME_UTILS_H +#define OUROBOROS_TIME_UTILS_H + +#ifdef MILLION +#undef MILLION +#endif + +#ifdef BILLION +#undef BILLION +#endif + +#define MILLION 1000000L +#define BILLION 1000000000L + +#include <sys/time.h> +#include <limits.h> /* LONG_MAX */ + +/* functions for timespecs */ +#define ts_diff_ns(t0, tx) (((tx)->tv_sec - (t0)->tv_sec) * BILLION \ + + ((tx)->tv_nsec - (t0)->tv_nsec)) +#define ts_diff_us(t0, tx) (((tx)->tv_sec - (t0)->tv_sec) * MILLION \ + + ((tx)->tv_nsec - (t0)->tv_nsec) / 1000L) +#define ts_diff_ms(t0, tx) (((tx)->tv_sec - (t0)->tv_sec) * 1000L \ + + ((tx)->tv_nsec - (t0)->tv_nsec) / MILLION) + +/* functions for timevals are the same */ +#define tv_diff_us(t0, tx) (((tx)->tv_sec - (t0)->tv_sec) * MILLION \ + + ((tx)->tv_usec - (t0)->tv_usec) / 1000L) +#define tv_diff_ms(t0, tx) (((tx)->tv_sec - (t0)->tv_sec) * 1000L \ + + ((tx)->tv_usec - (t0)->tv_usec) / MILLION) + +/* functions for timespecs */ +int ts_add(const struct timespec * t, + const struct timespec * intv, + struct timespec * res); + +int ts_diff(const struct timespec * t, + const struct timespec * intv, + struct timespec * res); + +/* functions for timevals */ +int tv_add(const struct timeval * t, + const struct timeval * intv, + struct timeval * res); + +int tv_diff(const struct timeval * t, + const struct timeval * intv, + struct timeval * res); + +/* copying a timeval into a timespec */ +int tv_to_ts(const struct timeval * src, + struct timespec * dst); + +/* copying a timespec into a timeval (loss of resolution) */ +int ts_to_tv(const struct timespec * src, + struct timeval * dst); + +#endif /* OUROBOROS_TIME_UTILS_H */ |