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/*
* Copyright (c) 2008, 2009 Nicira Networks.
*
* 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.
*
* THE 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.
*/
#ifndef TIMEVAL_H
#define TIMEVAL_H 1
#include <time.h>
#include "type-props.h"
#include "util.h"
struct pollfd;
struct timeval;
/* POSIX allows floating-point time_t, but we don't support it. */
BUILD_ASSERT_DECL(TYPE_IS_INTEGER(time_t));
/* We do try to cater to unsigned time_t, but I want to know about it if we
* ever encounter such a platform. */
BUILD_ASSERT_DECL(TYPE_IS_SIGNED(time_t));
#define TIME_MAX TYPE_MAXIMUM(time_t)
#define TIME_MIN TYPE_MINIMUM(time_t)
/* Interval between updates to the time reported by time_gettimeofday(), in ms.
* This should not be adjusted much below 10 ms or so with the current
* implementation, or too much time will be wasted in signal handlers and calls
* to time(0). */
#define TIME_UPDATE_INTERVAL 100
void time_init(void);
void time_refresh(void);
time_t time_now(void);
long long int time_msec(void);
void time_timeval(struct timeval *);
void time_alarm(unsigned int secs);
int time_poll(struct pollfd *, int n_pollfds, int timeout);
#endif /* timeval.h */
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