/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*
 * Implementation-private.  This header should not be included
 * directly by an application.  The application should instead
 * include <time.h> which includes this header conditionally
 * depending on which feature test macros are defined. By default,
 * this header is included by <time.h>.  X/Open and POSIX
 * standards requirements result in this header being included
 * by <time.h> only under a restricted set of conditions.
 */

#ifndef _SYS_TIME_IMPL_H
#define _SYS_TIME_IMPL_H

#include <sys/feature_tests.h>

#ifdef  __cplusplus
extern "C" {
#endif

#ifndef _ASM

#if !defined(_TIME_T) || __cplusplus >= 199711L
#define _TIME_T
typedef long    time_t;         /* time of day in seconds */
#endif  /* _TIME_T */

/*
 * Time expressed in seconds and nanoseconds
 */

typedef struct  timespec {              /* definition per POSIX.4 */
        time_t          tv_sec;         /* seconds */
        long            tv_nsec;        /* and nanoseconds */
} timespec_t;

#if defined(_SYSCALL32)

#include <sys/types32.h>

#define TIMESPEC32_TO_TIMESPEC(ts, ts32)        {       \
        (ts)->tv_sec = (time_t)(ts32)->tv_sec;          \
        (ts)->tv_nsec = (ts32)->tv_nsec;                \
}

#define TIMESPEC_TO_TIMESPEC32(ts32, ts)        {       \
        (ts32)->tv_sec = (time32_t)(ts)->tv_sec;        \
        (ts32)->tv_nsec = (ts)->tv_nsec;                \
}

#define TIMESPEC_OVERFLOW(ts)           \
        ((ts)->tv_sec < TIME32_MIN || (ts)->tv_sec > TIME32_MAX)

#endif  /* _SYSCALL32 */

typedef struct timespec timestruc_t;    /* definition per SVr4 */

/*
 * The following has been left in for backward compatibility. Portable
 * applications should not use the structure name timestruc.
 */

#if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
#define timestruc       timespec        /* structure name per SVr4 */
#endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */

/*
 * Timer specification
 */
typedef struct itimerspec {             /* definition per POSIX.4 */
        struct timespec it_interval;    /* timer period */
        struct timespec it_value;       /* timer expiration */
} itimerspec_t;

#if defined(_SYSCALL32)

#define ITIMERSPEC32_TO_ITIMERSPEC(it, it32)    {       \
        TIMESPEC32_TO_TIMESPEC(&(it)->it_interval, &(it32)->it_interval); \
        TIMESPEC32_TO_TIMESPEC(&(it)->it_value, &(it32)->it_value);     \
}

#define ITIMERSPEC_TO_ITIMERSPEC32(it32, it)    {       \
        TIMESPEC_TO_TIMESPEC32(&(it32)->it_interval, &(it)->it_interval); \
        TIMESPEC_TO_TIMESPEC32(&(it32)->it_value, &(it)->it_value);     \
}

#define ITIMERSPEC_OVERFLOW(it)                         \
        (TIMESPEC_OVERFLOW(&(it)->it_interval) &&       \
        TIMESPEC_OVERFLOW(&(it)->it_value))

#endif  /* _SYSCALL32 */

#endif  /* _ASM */

#define __CLOCK_REALTIME0       0       /* obsolete; same as CLOCK_REALTIME */
#define CLOCK_VIRTUAL           1       /* thread's user-level CPU clock */
#define CLOCK_THREAD_CPUTIME_ID 2       /* thread's user+system CPU clock */
#define CLOCK_REALTIME          3       /* wall clock */
#define CLOCK_MONOTONIC         4       /* high resolution monotonic clock */
#define CLOCK_PROCESS_CPUTIME_ID 5      /* process's user+system CPU clock */
#define CLOCK_HIGHRES           CLOCK_MONOTONIC         /* alternate name */
#define CLOCK_PROF              CLOCK_THREAD_CPUTIME_ID /* alternate name */

#ifdef _KERNEL
#define CLOCK_MAX               6
#endif

#define TIMER_RELTIME   0x0             /* set timer relative */
#define TIMER_ABSTIME   0x1             /* set timer absolute */

#ifdef  __cplusplus
}
#endif

#endif  /* _SYS_TIME_IMPL_H */