From 6571ed0648004270ce916d6187a55d845fde7c8a Mon Sep 17 00:00:00 2001 From: David Robillard Date: Mon, 19 Sep 2011 03:16:47 +0000 Subject: Factor out benchmark timing stuff git-svn-id: http://svn.drobilla.net/zix/trunk@19 df6676b4-ccc9-40e5-b5d6-7c4628a128e3 --- test/bench.h | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 test/bench.h (limited to 'test/bench.h') diff --git a/test/bench.h b/test/bench.h new file mode 100644 index 0000000..4227e2d --- /dev/null +++ b/test/bench.h @@ -0,0 +1,44 @@ +/* + Copyright 2011 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. +*/ + +#define _POSIX_C_SOURCE 199309L + +#include +#include + +static inline double +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 elapsed_s(start_t, &end_t); +} + -- cgit v1.2.1