mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2024-09-09 09:14:57 +00:00
7846f71fb3
* bootstrap (modules): Add mkstemp. The remainder of these changes are the result of running ./bootstrap, adding new files, and committing the result. * gnulib/lib/gettimeofday.c: New file. * gnulib/lib/mkstemp.c: New file. * gnulib/lib/tempname.c: New file. * gnulib/lib/tempname.h: New file. * gnulib/m4/gettimeofday.m4: New file. * gnulib/m4/mkstemp.m4: New file. * gnulib/m4/tempname.m4: New file. * gnulib/tests/test-gettimeofday.c: New file. * gnulib/lib/Makefile.am: Update. * gnulib/m4/gnulib-cache.m4: Likewise. * gnulib/m4/gnulib-comp.m4: Likewise. * gnulib/m4/inet_pton.m4: Likewise. * gnulib/tests/Makefile.am: Likewise.
143 lines
3.8 KiB
C
143 lines
3.8 KiB
C
/* Provide gettimeofday for systems that don't have it or for which it's broken.
|
|
|
|
Copyright (C) 2001, 2002, 2003, 2005, 2006, 2007 Free Software
|
|
Foundation, Inc.
|
|
|
|
This program 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, or (at your option)
|
|
any later version.
|
|
|
|
This program 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 this program; if not, write to the Free Software Foundation,
|
|
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
|
|
|
|
/* written by Jim Meyering */
|
|
|
|
#include <config.h>
|
|
|
|
/* Specification. */
|
|
#include <sys/time.h>
|
|
|
|
#include <time.h>
|
|
|
|
#if HAVE_SYS_TIMEB_H
|
|
# include <sys/timeb.h>
|
|
#endif
|
|
|
|
#if GETTIMEOFDAY_CLOBBERS_LOCALTIME || TZSET_CLOBBERS_LOCALTIME
|
|
|
|
/* Work around the bug in some systems whereby gettimeofday clobbers
|
|
the static buffer that localtime uses for its return value. The
|
|
gettimeofday function from Mac OS X 10.0.4 (i.e., Darwin 1.3.7) has
|
|
this problem. The tzset replacement is necessary for at least
|
|
Solaris 2.5, 2.5.1, and 2.6. */
|
|
|
|
static struct tm tm_zero_buffer;
|
|
static struct tm *localtime_buffer_addr = &tm_zero_buffer;
|
|
|
|
/* This is a wrapper for localtime. It is used only on systems for which
|
|
gettimeofday clobbers the static buffer used for localtime's result.
|
|
|
|
On the first call, record the address of the static buffer that
|
|
localtime uses for its result. */
|
|
|
|
struct tm *
|
|
rpl_localtime (time_t const *timep)
|
|
{
|
|
#undef localtime
|
|
extern struct tm *localtime (time_t const *);
|
|
struct tm *tm = localtime (timep);
|
|
|
|
if (localtime_buffer_addr == &tm_zero_buffer)
|
|
localtime_buffer_addr = tm;
|
|
|
|
return tm;
|
|
}
|
|
|
|
/* Same as above, since gmtime and localtime use the same buffer. */
|
|
struct tm *
|
|
rpl_gmtime (time_t const *timep)
|
|
{
|
|
#undef gmtime
|
|
extern struct tm *gmtime (time_t const *);
|
|
struct tm *tm = gmtime (timep);
|
|
|
|
if (localtime_buffer_addr == &tm_zero_buffer)
|
|
localtime_buffer_addr = tm;
|
|
|
|
return tm;
|
|
}
|
|
|
|
#endif /* GETTIMEOFDAY_CLOBBERS_LOCALTIME || TZSET_CLOBBERS_LOCALTIME */
|
|
|
|
#if TZSET_CLOBBERS_LOCALTIME
|
|
/* This is a wrapper for tzset, for systems on which tzset may clobber
|
|
the static buffer used for localtime's result. */
|
|
void
|
|
rpl_tzset (void)
|
|
{
|
|
#undef tzset
|
|
extern void tzset (void);
|
|
|
|
/* Save and restore the contents of the buffer used for localtime's
|
|
result around the call to tzset. */
|
|
struct tm save = *localtime_buffer_addr;
|
|
tzset ();
|
|
*localtime_buffer_addr = save;
|
|
}
|
|
#endif
|
|
|
|
/* This is a wrapper for gettimeofday. It is used only on systems
|
|
that lack this function, or whose implementation of this function
|
|
causes problems. */
|
|
|
|
int
|
|
rpl_gettimeofday (struct timeval *restrict tv, void *restrict tz)
|
|
{
|
|
#undef gettimeofday
|
|
#if HAVE_GETTIMEOFDAY
|
|
# if GETTIMEOFDAY_CLOBBERS_LOCALTIME
|
|
/* Save and restore the contents of the buffer used for localtime's
|
|
result around the call to gettimeofday. */
|
|
struct tm save = *localtime_buffer_addr;
|
|
# endif
|
|
|
|
int result = gettimeofday (tv, tz);
|
|
|
|
# if GETTIMEOFDAY_CLOBBERS_LOCALTIME
|
|
*localtime_buffer_addr = save;
|
|
# endif
|
|
|
|
return result;
|
|
|
|
#else
|
|
|
|
# if HAVE__FTIME
|
|
|
|
struct _timeb timebuf;
|
|
_ftime (&timebuf);
|
|
tv->tv_sec = timebuf.time;
|
|
tv->tv_usec = timebuf.millitm * 1000;
|
|
|
|
# else
|
|
|
|
# if !defined OK_TO_USE_1S_CLOCK
|
|
# error "Only 1-second nominal clock resolution found. Is that intended?" \
|
|
"If so, compile with the -DOK_TO_USE_1S_CLOCK option."
|
|
# endif
|
|
tv->tv_sec = time (NULL);
|
|
tv->tv_usec = 0;
|
|
|
|
# endif
|
|
|
|
return 0;
|
|
|
|
#endif
|
|
}
|