From 83b5c7b86c23f1379d3a96ab4e70c41b032d8823 Mon Sep 17 00:00:00 2001 From: David Robillard Date: Sat, 11 Aug 2012 23:42:14 +0000 Subject: Add lv2bench utility. git-svn-id: http://svn.drobilla.net/lad/trunk/lilv@4660 a436a847-0d15-0410-975c-d299462d15a1 --- utils/bench.h | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 utils/bench.h (limited to 'utils/bench.h') diff --git a/utils/bench.h b/utils/bench.h new file mode 100644 index 0000000..948622c --- /dev/null +++ b/utils/bench.h @@ -0,0 +1,52 @@ +/* + Copyright 2011-2012 David Robillard + + Permission to use, copy, modify, and/or distribute this software for any + purpose with or without fee is hereby granted, provided that the above + copyright notice and this permission notice appear in all copies. + + THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. +*/ + +/** + @file bench.h A simple real-time benchmarking API. +*/ + +#ifndef BENCH_H +#define BENCH_H + +#define _POSIX_C_SOURCE 199309L + +#include +#include + +static inline double +bench_elapsed_s(const struct timespec* start, const struct timespec* end) +{ + return ((end->tv_sec - start->tv_sec) + + ((end->tv_nsec - start->tv_nsec) * 0.000000001)); +} + +static inline struct timespec +bench_start() +{ + struct timespec start_t; + clock_gettime(CLOCK_REALTIME, &start_t); + return start_t; +} + +static inline double +bench_end(const struct timespec* start_t) +{ + struct timespec end_t; + clock_gettime(CLOCK_REALTIME, &end_t); + return bench_elapsed_s(start_t, &end_t); +} + +#endif /* BENCH_H */ -- cgit v1.2.1