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/*
* libdpkg - Debian packaging suite library routines
* perf.h - performance testing support
*
* Copyright © 2009-2019 Guillem Jover <guillem@debian.org>
*
* This 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,
* or (at your option) any later version.
*
* This 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, see <https://www.gnu.org/licenses/>.
*/
#ifndef LIBDPKG_PERF_H
#define LIBDPKG_PERF_H
#include <config.h>
#include <compat.h>
#include <time.h>
#include <stdio.h>
#define TEST_OMIT_VARIABLES
#include <dpkg/test.h>
DPKG_BEGIN_DECLS
struct perf_slot {
struct timespec t_ini, t_end;
};
static inline void
perf_ts_sub(struct timespec *a, struct timespec *b, struct timespec *res)
{
res->tv_sec = a->tv_sec - b->tv_sec;
res->tv_nsec = a->tv_nsec - b->tv_nsec;
if (res->tv_nsec < 0) {
res->tv_sec--;
res->tv_nsec += 1000000000;
}
}
static void
perf_ts_mark_print(const char *str)
{
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
printf("%lu.%.9lu: %s\n", ts.tv_sec, ts.tv_nsec, str);
}
static void
perf_ts_slot_print(struct perf_slot *ps, const char *str)
{
struct timespec t_res;
perf_ts_sub(&ps->t_end, &ps->t_ini, &t_res);
printf("%lu.%.9lu: %s (%lu.%.9lu sec)\n",
ps->t_end.tv_sec, ps->t_end.tv_nsec,
str, t_res.tv_sec, t_res.tv_nsec);
}
#define perf_ts_slot_start(ps) clock_gettime(CLOCK_MONOTONIC, &((ps)->t_ini))
#define perf_ts_slot_stop(ps) clock_gettime(CLOCK_MONOTONIC, &((ps)->t_end))
DPKG_END_DECLS
#endif
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