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/*
* Copyright (C) 2014 Dejan Muhamedagic <dejan@suse.de>
*
* This program 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 2.1 of the License, or (at your option) any later version.
*
* This software 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _TIMER_H
#define _TIMER_H
#include <time.h>
#include <unistd.h>
#include <sys/time.h>
#if _POSIX_TIMERS > 0
#if defined(CLOCK_MONOTONIC)
# define BOOTH_CLOCK CLOCK_MONOTONIC
#else
# define BOOTH_CLOCK CLOCK_REALTIME
#endif
typedef struct timespec timetype;
#define get_time(p) clock_gettime(BOOTH_CLOCK, p)
#define time_cmp(a, b, CMP) \
(((a)->tv_sec == (b)->tv_sec) ? \
((a)->tv_nsec CMP (b)->tv_nsec) : \
((a)->tv_sec CMP (b)->tv_sec))
void time_sub(struct timespec *a, struct timespec *b, struct timespec *res);
void time_add(struct timespec *a, struct timespec *b, struct timespec *res);
time_t get_secs(time_t *p);
time_t wall_ts(time_t t);
time_t unwall_ts(time_t t);
#define msecs(tv) ((tv).tv_nsec/1000000)
/* random time from 0 to t milliseconds */
#define rand_time_ms(tv, t) do { \
tv.tv_sec = 0; \
tv.tv_nsec = t * cl_rand_from_interval(0, 1000000); \
} while(0)
#else
typedef struct timeval timetype;
#define get_time(p) gettimeofday(p, NULL)
#define time_sub timersub
#define time_add timeradd
#define time_cmp timercmp
#define get_secs time
#define msecs(tv) ((tv).tv_usec/1000)
/* random time from 0 to t milliseconds */
#define rand_time_ms(tv, t) do { \
tv.tv_sec = 0; \
tv.tv_usec = t * cl_rand_from_interval(0, 1000); \
} while(0)
#define wall_ts(t) (t)
#define unwall_ts(t) (t)
#endif
#endif

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