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/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef TIMEVAL_H
#define TIMEVAL_H 1
#include <time.h>
#include "type-props.h"
#include "util.h"
#ifdef __cplusplus
extern "C" {
#endif
struct pollfd;
struct timespec;
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 reported time, 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 clock_gettime(). */
#define TIME_UPDATE_INTERVAL 100
void time_disable_restart(void);
void time_enable_restart(void);
void time_postfork(void);
void time_refresh(void);
time_t time_now(void);
time_t time_wall(void);
long long int time_msec(void);
long long int time_wall_msec(void);
void time_timespec(struct timespec *);
void time_wall_timespec(struct timespec *);
void time_alarm(unsigned int secs);
int time_poll(struct pollfd *, int n_pollfds, long long int timeout_when,
int *elapsed);
bool time_cached(void);
long long int timespec_to_msec(const struct timespec *);
long long int timeval_to_msec(const struct timeval *);
void xgettimeofday(struct timeval *);
int get_cpu_usage(void);
long long int time_boot_msec(void);
#ifdef __cplusplus
}
#endif
#endif /* timeval.h */
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