[mirror_spl-debian.git] / include / sys / time.h

/*****************************************************************************\
 *  Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
 *  Copyright (C) 2007 The Regents of the University of California.
 *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
 *  Written by Brian Behlendorf <behlendorf1@llnl.gov>.
 *  UCRL-CODE-235197
 *
 *  This file is part of the SPL, Solaris Porting Layer.
 *  For details, see <http://zfsonlinux.org/>.
 *
 *  The SPL 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 of the License, or (at your
 *  option) any later version.
 *
 *  The SPL 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 the SPL.  If not, see <http://www.gnu.org/licenses/>.
\*****************************************************************************/

#ifndef _SPL_TIME_H
#define	_SPL_TIME_H

#include <linux/module.h>
#include <linux/time.h>
#include <sys/types.h>
#include <sys/timer.h>

#if defined(CONFIG_64BIT)
#define	TIME_MAX			INT64_MAX
#define	TIME_MIN			INT64_MIN
#else
#define	TIME_MAX			INT32_MAX
#define	TIME_MIN			INT32_MIN
#endif

#define	SEC				1
#define	MILLISEC			1000
#define	MICROSEC			1000000
#define	NANOSEC				1000000000

#define	MSEC2NSEC(m)	((hrtime_t)(m) * (NANOSEC / MILLISEC))
#define	NSEC2MSEC(n)	((n) / (NANOSEC / MILLISEC))

#define	USEC2NSEC(m)	((hrtime_t)(m) * (NANOSEC / MICROSEC))
#define	NSEC2USEC(n)	((n) / (NANOSEC / MICROSEC))

#define	NSEC2SEC(n)	((n) / (NANOSEC / SEC))
#define	SEC2NSEC(m)	((hrtime_t)(m) * (NANOSEC / SEC))

typedef longlong_t		hrtime_t;
typedef struct timespec		timespec_t;

static const int hz = HZ;

#define	TIMESPEC_OVERFLOW(ts)		\
	((ts)->tv_sec < TIME_MIN || (ts)->tv_sec > TIME_MAX)

#if defined(HAVE_INODE_TIMESPEC64_TIMES)
typedef struct timespec64	inode_timespec_t;
#else
typedef struct timespec		inode_timespec_t;
#endif

static inline void
gethrestime(inode_timespec_t *ts)
 {
#if defined(HAVE_INODE_TIMESPEC64_TIMES)
	*ts = current_kernel_time64();
#else
	*ts = current_kernel_time();
#endif
}

static inline time_t
gethrestime_sec(void)
{
	struct timespec ts;
	ts = current_kernel_time();
	return (ts.tv_sec);
}

static inline hrtime_t
gethrtime(void)
{
	struct timespec ts;
	getrawmonotonic(&ts);
	return (((hrtime_t)ts.tv_sec * NSEC_PER_SEC) + ts.tv_nsec);
}

#endif  /* _SPL_TIME_H */
Commit	Line	Data
	1	/*****************************************************************************\
	2	* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
	3	* Copyright (C) 2007 The Regents of the University of California.
	4	* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
	5	* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
	6	* UCRL-CODE-235197
	7	*
	8	* This file is part of the SPL, Solaris Porting Layer.
	9	* For details, see <http://zfsonlinux.org/>.
	10	*
	11	* The SPL is free software; you can redistribute it and/or modify it
	12	* under the terms of the GNU General Public License as published by the
	13	* Free Software Foundation; either version 2 of the License, or (at your
	14	* option) any later version.
	15	*
	16	* The SPL is distributed in the hope that it will be useful, but WITHOUT
	17	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	18	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	19	* for more details.
	20	*
	21	* You should have received a copy of the GNU General Public License along
	22	* with the SPL. If not, see <http://www.gnu.org/licenses/>.
	23	\*****************************************************************************/
	24
	25	#ifndef _SPL_TIME_H
	26	#define _SPL_TIME_H
	27
	28	#include <linux/module.h>
	29	#include <linux/time.h>
	30	#include <sys/types.h>
	31	#include <sys/timer.h>
	32
	33	#if defined(CONFIG_64BIT)
	34	#define TIME_MAX INT64_MAX
	35	#define TIME_MIN INT64_MIN
	36	#else
	37	#define TIME_MAX INT32_MAX
	38	#define TIME_MIN INT32_MIN
	39	#endif
	40
	41	#define SEC 1
	42	#define MILLISEC 1000
	43	#define MICROSEC 1000000
	44	#define NANOSEC 1000000000
	45
	46	#define MSEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / MILLISEC))
	47	#define NSEC2MSEC(n) ((n) / (NANOSEC / MILLISEC))
	48
	49	#define USEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / MICROSEC))
	50	#define NSEC2USEC(n) ((n) / (NANOSEC / MICROSEC))
	51
	52	#define NSEC2SEC(n) ((n) / (NANOSEC / SEC))
	53	#define SEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / SEC))
	54
	55	typedef longlong_t hrtime_t;
	56	typedef struct timespec timespec_t;
	57
	58	static const int hz = HZ;
	59
	60	#define TIMESPEC_OVERFLOW(ts) \
	61	((ts)->tv_sec < TIME_MIN \|\| (ts)->tv_sec > TIME_MAX)
	62
	63	#if defined(HAVE_INODE_TIMESPEC64_TIMES)
	64	typedef struct timespec64 inode_timespec_t;
	65	#else
	66	typedef struct timespec inode_timespec_t;
	67	#endif
	68
	69	static inline void
	70	gethrestime(inode_timespec_t *ts)
	71	{
	72	#if defined(HAVE_INODE_TIMESPEC64_TIMES)
	73	*ts = current_kernel_time64();
	74	#else
	75	*ts = current_kernel_time();
	76	#endif
	77	}
	78
	79	static inline time_t
	80	gethrestime_sec(void)
	81	{
	82	struct timespec ts;
	83	ts = current_kernel_time();
	84	return (ts.tv_sec);
	85	}
	86
	87	static inline hrtime_t
	88	gethrtime(void)
	89	{
	90	struct timespec ts;
	91	getrawmonotonic(&ts);
	92	return (((hrtime_t)ts.tv_sec * NSEC_PER_SEC) + ts.tv_nsec);
	93	}
	94
	95	#endif /* _SPL_TIME_H */