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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     11  * See the License for the specific language governing permissions
     12  * and limitations under the License.
     13  *
     14  * When distributing Covered Code, include this CDDL HEADER in each
     15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  * If applicable, add the following below this CDDL HEADER, with the
     17  * fields enclosed by brackets "[]" replaced with your own identifying
     18  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  *
     20  * CDDL HEADER END
     21  */
     22 /*
     23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 /*
     28  * Implementation-private.  This header should not be included
     29  * directly by an application.  The application should instead
     30  * include <time.h> which includes this header conditionally
     31  * depending on which feature test macros are defined. By default,
     32  * this header is included by <time.h>.  X/Open and POSIX
     33  * standards requirements result in this header being included
     34  * by <time.h> only under a restricted set of conditions.
     35  */
     36 
     37 #ifndef _SYS_TIME_IMPL_H
     38 #define	_SYS_TIME_IMPL_H
     39 
     40 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     41 
     42 #include <sys/feature_tests.h>
     43 
     44 #ifdef	__cplusplus
     45 extern "C" {
     46 #endif
     47 
     48 #ifndef	_ASM
     49 
     50 #if !defined(_TIME_T) || __cplusplus >= 199711L
     51 #define	_TIME_T
     52 typedef	long	time_t;		/* time of day in seconds */
     53 #endif	/* _TIME_T */
     54 
     55 /*
     56  * Time expressed in seconds and nanoseconds
     57  */
     58 
     59 typedef struct  timespec {		/* definition per POSIX.4 */
     60 	time_t		tv_sec;		/* seconds */
     61 	long		tv_nsec;	/* and nanoseconds */
     62 } timespec_t;
     63 
     64 #if defined(_SYSCALL32)
     65 
     66 #include <sys/types32.h>
     67 
     68 #define	TIMESPEC32_TO_TIMESPEC(ts, ts32)	{	\
     69 	(ts)->tv_sec = (time_t)(ts32)->tv_sec;		\
     70 	(ts)->tv_nsec = (ts32)->tv_nsec;		\
     71 }
     72 
     73 #define	TIMESPEC_TO_TIMESPEC32(ts32, ts)	{	\
     74 	(ts32)->tv_sec = (time32_t)(ts)->tv_sec;	\
     75 	(ts32)->tv_nsec = (ts)->tv_nsec;		\
     76 }
     77 
     78 #define	TIMESPEC_OVERFLOW(ts)		\
     79 	((ts)->tv_sec < TIME32_MIN || (ts)->tv_sec > TIME32_MAX)
     80 
     81 #endif	/* _SYSCALL32 */
     82 
     83 typedef struct timespec timestruc_t;	/* definition per SVr4 */
     84 
     85 /*
     86  * The following has been left in for backward compatibility. Portable
     87  * applications should not use the structure name timestruc.
     88  */
     89 
     90 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
     91 #define	timestruc	timespec	/* structure name per SVr4 */
     92 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
     93 
     94 /*
     95  * Timer specification
     96  */
     97 typedef struct itimerspec {		/* definition per POSIX.4 */
     98 	struct timespec	it_interval;	/* timer period */
     99 	struct timespec	it_value;	/* timer expiration */
    100 } itimerspec_t;
    101 
    102 #if defined(_SYSCALL32)
    103 
    104 #define	ITIMERSPEC32_TO_ITIMERSPEC(it, it32)	{	\
    105 	TIMESPEC32_TO_TIMESPEC(&(it)->it_interval, &(it32)->it_interval); \
    106 	TIMESPEC32_TO_TIMESPEC(&(it)->it_value, &(it32)->it_value);	\
    107 }
    108 
    109 #define	ITIMERSPEC_TO_ITIMERSPEC32(it32, it)	{	\
    110 	TIMESPEC_TO_TIMESPEC32(&(it32)->it_interval, &(it)->it_interval); \
    111 	TIMESPEC_TO_TIMESPEC32(&(it32)->it_value, &(it)->it_value);	\
    112 }
    113 
    114 #define	ITIMERSPEC_OVERFLOW(it)				\
    115 	(TIMESPEC_OVERFLOW(&(it)->it_interval) &&	\
    116 	TIMESPEC_OVERFLOW(&(it)->it_value))
    117 
    118 #endif	/* _SYSCALL32 */
    119 
    120 #endif	/* _ASM */
    121 
    122 #define	__CLOCK_REALTIME0	0	/* obsolete; same as CLOCK_REALTIME */
    123 #define	CLOCK_VIRTUAL		1	/* thread's user-level CPU clock */
    124 #define	CLOCK_THREAD_CPUTIME_ID	2	/* thread's user+system CPU clock */
    125 #define	CLOCK_REALTIME		3	/* wall clock */
    126 #define	CLOCK_MONOTONIC		4	/* high resolution monotonic clock */
    127 #define	CLOCK_PROCESS_CPUTIME_ID 5	/* process's user+system CPU clock */
    128 #define	CLOCK_HIGHRES		CLOCK_MONOTONIC		/* alternate name */
    129 #define	CLOCK_PROF		CLOCK_THREAD_CPUTIME_ID	/* alternate name */
    130 
    131 #ifdef _KERNEL
    132 #define	CLOCK_MAX		6
    133 #endif
    134 
    135 #define	TIMER_RELTIME	0x0		/* set timer relative */
    136 #define	TIMER_ABSTIME	0x1		/* set timer absolute */
    137 
    138 #ifdef	__cplusplus
    139 }
    140 #endif
    141 
    142 #endif	/* _SYS_TIME_IMPL_H */
    143