From d74d67a0e2d3de0ec208ed9b839815a70d84f727 Mon Sep 17 00:00:00 2001 From: dimitri staessens Date: Tue, 24 May 2016 20:38:01 +0200 Subject: tools, lib: cbr tool for bandwidth testing The tool sends constant bandwidth traffic between a client and a server. cbr --help for more info. Adds time_utils.h to the library containing useful functions for arithmetic with timespec and timeval structures. --- include/ouroboros/CMakeLists.txt | 1 + include/ouroboros/time_utils.h | 75 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 76 insertions(+) create mode 100644 include/ouroboros/time_utils.h (limited to 'include') 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..d7274c1d --- /dev/null +++ b/include/ouroboros/time_utils.h @@ -0,0 +1,75 @@ +/* + * Ouroboros - Copyright (C) 2016 + * + * Time utilities + * + * Dimitri Staessens + * + * 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 + +#ifndef MILLION +#define MILLION 1000000L +#endif + +#ifndef BILLION +#define BILLION 1000000000L +#endif + +#include +#include /* 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) ts_diff_us(t0, tx) +#define tv_diff_ms(t0, tx) ts_diff_ms(t0, tx) + +/* 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 */ -- cgit v1.2.3