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cb5e4aada7
This patch changes the output format of the main benchmark output file (bench.out) to an extensible format. I chose JSON over XML because in addition to being extensible, it is also not too verbose. Additionally it has good support in python. The significant change I have made in terms of functionality is to put timing information as an attribute in JSON instead of a string and to do that, there is a separate program that prints out a JSON snippet mentioning the type of timing (hp_timing or clock_gettime). The mean timing has now changed from iterations per unit to actual timing per iteration.
70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
/* Define timing macros.
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Copyright (C) 2013-2014 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <hp-timing.h>
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#include <stdint.h>
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#if HP_TIMING_AVAIL && !defined USE_CLOCK_GETTIME
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# define GL(x) _##x
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# define GLRO(x) _##x
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hp_timing_t _dl_hp_timing_overhead;
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typedef hp_timing_t timing_t;
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# define TIMING_TYPE "hp_timing"
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# define TIMING_INIT(res) \
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({ \
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HP_TIMING_DIFF_INIT(); \
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(res) = 1; \
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})
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# define TIMING_NOW(var) HP_TIMING_NOW (var)
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# define TIMING_DIFF(diff, start, end) HP_TIMING_DIFF ((diff), (start), (end))
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# define TIMING_ACCUM(sum, diff) HP_TIMING_ACCUM_NT ((sum), (diff))
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#else
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#include <time.h>
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typedef uint64_t timing_t;
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# define TIMING_TYPE "clock_gettime"
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/* Measure the resolution of the clock so we can scale the number of
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benchmark iterations by this value. */
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# define TIMING_INIT(res) \
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({ \
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struct timespec start; \
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clock_getres (CLOCK_PROCESS_CPUTIME_ID, &start); \
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(res) = start.tv_nsec; \
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})
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# define TIMING_NOW(var) \
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({ \
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struct timespec tv; \
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clock_gettime (CLOCK_PROCESS_CPUTIME_ID, &tv); \
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(var) = (uint64_t) (tv.tv_nsec + (uint64_t) 1000000000 * tv.tv_sec); \
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})
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# define TIMING_DIFF(diff, start, end) (diff) = (end) - (start)
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# define TIMING_ACCUM(sum, diff) (sum) += (diff)
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#endif
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#define TIMING_PRINT_MEAN(d_total_s, d_iters) \
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printf ("\t%g", (d_total_s) / (d_iters))
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