/* * Ouroboros - Copyright (C) 2016 - 2018 * * Time utilities * * Dimitri Staessens <dimitri.staessens@ugent.be> * Sander Vrijders <sander.vrijders@ugent.be> * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * 3. Neither the name of the copyright holder nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef OUROBOROS_TOOLS_TIME_UTILS_H #define OUROBOROS_TOOLS_TIME_UTILS_H #ifdef MILLION #undef MILLION #endif #ifdef BILLION #undef BILLION #endif #define MILLION 1000000L #define BILLION 1000000000L #include <time.h> #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_TOOLS_TIME_UTILS_H */