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/* System-dependent timing definitions. FreeBSD version.
Copyright (C) 1996-2017 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
/*
* Never include this file directly; use <time.h> instead.
*/
#ifndef _BITS_TIME_H
#define _BITS_TIME_H 1
#include <bits/types.h>
/* ISO/IEC 9899:1999 7.23.1: Components of time
The macro `CLOCKS_PER_SEC' is an expression with type `clock_t' that is
the number per second of the value returned by the `clock' function. */
/* CAE XSH, Issue 4, Version 2: <time.h>
The value of CLOCKS_PER_SEC is required to be 1 million on all
XSI-conformant systems. */
#define CLOCKS_PER_SEC ((__clock_t) 1000000)
#if (!defined __STRICT_ANSI__ || defined __USE_POSIX) \
&& !defined __USE_XOPEN2K
/* Even though CLOCKS_PER_SEC has such a strange value CLK_TCK
presents the real value for clock ticks per second for the system. */
extern long int __sysconf (int);
# define CLK_TCK ((__clock_t) __sysconf (2)) /* 2 is _SC_CLK_TCK */
#endif
#ifdef __USE_POSIX199309
/* Identifier for system-wide realtime clock. */
# define CLOCK_REALTIME 0
/* Monotonic system-wide clock. */
# define CLOCK_MONOTONIC 4
/* These are BSD specific clocks. */
# ifdef __USE_MISC
# define CLOCK_VIRTUAL 1
# define CLOCK_PROF 2
# define CLOCK_UPTIME 5 /* FreeBSD-specific. */
# define CLOCK_UPTIME_PRECISE 7 /* FreeBSD-specific. */
# define CLOCK_UPTIME_FAST 8 /* FreeBSD-specific. */
# define CLOCK_REALTIME_PRECISE 9 /* FreeBSD-specific. */
# define CLOCK_REALTIME_FAST 10 /* FreeBSD-specific. */
# define CLOCK_MONOTONIC_PRECISE 11 /* FreeBSD-specific. */
# define CLOCK_MONOTONIC_FAST 12 /* FreeBSD-specific. */
# define CLOCK_SECOND 13 /* FreeBSD-specific. */
# endif
/* Thread-specific CPU-time clock. */
# define CLOCK_THREAD_CPUTIME_ID 14
/* High-resolution timer from the CPU. */
# define CLOCK_PROCESS_CPUTIME_ID 15
# ifdef __USE_MISC
# define CPUCLOCK_WHICH_PID 0
# define CPUCLOCK_WHICH_TID 1
# endif
/* Flag to indicate time is absolute. */
# define TIMER_RELTIME 0 /* relative timer */
# define TIMER_ABSTIME 1 /* absolute timer */
#endif
/* Getkerninfo clock information structure */
struct clockinfo
{
int hz; /* clock frequency */
int tick; /* micro-seconds per hz tick */
int spare;
int stathz; /* statistics clock frequency */
int profhz; /* profiling clock frequency */
};
#endif /* bits/time.h */
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