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/*
* This file is part of the SPL: Solaris Porting Layer.
*
* Copyright (c) 2008 Lawrence Livermore National Security, LLC.
* Produced at Lawrence Livermore National Laboratory
* Written by:
* Brian Behlendorf <behlendorf1@llnl.gov>,
* Herb Wartens <wartens2@llnl.gov>,
* Jim Garlick <garlick@llnl.gov>
* UCRL-CODE-235197
*
* This 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.
*
* This 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 this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <sys/sysmacros.h>
#include <sys/time.h>
#ifdef DEBUG_SUBSYSTEM
#undef DEBUG_SUBSYSTEM
#endif
#define DEBUG_SUBSYSTEM S_TIME
void
__gethrestime(timestruc_t *ts)
{
getnstimeofday((struct timespec *)ts);
}
EXPORT_SYMBOL(__gethrestime);
int
__clock_gettime(clock_type_t type, timespec_t *tp)
{
/* Only support CLOCK_REALTIME+__CLOCK_REALTIME0 for now */
ASSERT((type == CLOCK_REALTIME) || (type == __CLOCK_REALTIME0));
getnstimeofday(tp);
return 0;
}
EXPORT_SYMBOL(__clock_gettime);
/* This function may not be as fast as using monotonic_clock() but it
* should be much more portable, if performance becomes as issue we can
* look at using monotonic_clock() for x86_64 and x86 arches.
*/
hrtime_t
__gethrtime(void) {
timespec_t tv;
hrtime_t rc;
do_posix_clock_monotonic_gettime(&tv);
rc = (NSEC_PER_SEC * (hrtime_t)tv.tv_sec) + (hrtime_t)tv.tv_nsec;
return rc;
}
EXPORT_SYMBOL(__gethrtime);
/* Not exported from the kernel, but we need it for timespec_sub. Be very
* careful here we are using the kernel prototype, so that must not change.
*/
void
set_normalized_timespec(struct timespec *ts, time_t sec, long nsec)
{
while (nsec >= NSEC_PER_SEC) {
nsec -= NSEC_PER_SEC;
++sec;
}
while (nsec < 0) {
nsec += NSEC_PER_SEC;
--sec;
}
ts->tv_sec = sec;
ts->tv_nsec = nsec;
}
EXPORT_SYMBOL(set_normalized_timespec);
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