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[BZ #2832, BZ #2987]

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2006-06-08  Joseph Myers  <jsm28@gcc.gnu.org>
	[BZ #2832]
	* math/gen-libm-test.pl (clean_up_number): Do not remove trailing
	0s from integers.

2006-08-13  Ulrich Drepper  <drepper@redhat.com>

	[BZ #2987]
	* sysdeps/unix/sysv/linux/clock_settime.c: Add code to use syscall
	for CPU clocks.
	* sysdeps/unix/clock_settime.c: Add support for platform-specific
	setting of CPU clocks.
This commit is contained in:
Ulrich Drepper
2006-08-13 08:21:10 +00:00
parent 45698414d3
commit f99ed76079
4 changed files with 140 additions and 47 deletions
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73
sysdeps/unix/sysv/linux/clock_settime.c
View File

@ -16,10 +16,65 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include <sysdep.h>
#include "kernel-posix-cpu-timers.h"
#include <kernel-features.h>
#ifndef HAVE_CLOCK_GETTIME_VSYSCALL
# undef INTERNAL_VSYSCALL
# define INTERNAL_VSYSCALL INTERNAL_SYSCALL
# undef INLINE_VSYSCALL
# define INLINE_VSYSCALL INLINE_SYSCALL
#else
# include <bits/libc-vdso.h>
#endif
#if __ASSUME_POSIX_CPU_TIMERS <= 0 && defined __NR_clock_settime
extern int __libc_missing_posix_timers attribute_hidden;
extern int __libc_missing_posix_cpu_timers attribute_hidden;
static int
maybe_syscall_settime_cpu (clockid_t clock_id, const struct timespec *tp)
{
int e = EINVAL;
if (!__libc_missing_posix_cpu_timers)
{
INTERNAL_SYSCALL_DECL (err);
int r = INTERNAL_VSYSCALL (clock_settime, err, 2, clock_id, tp);
if (!INTERNAL_SYSCALL_ERROR_P (r, err))
return 0;
e = INTERNAL_SYSCALL_ERRNO (r, err);
# ifndef __ASSUME_POSIX_TIMERS
if (e == ENOSYS)
{
__libc_missing_posix_timers = 1;
__libc_missing_posix_cpu_timers = 1;
e = EINVAL;
}
else
# endif
{
if (e == EINVAL)
{
/* Check whether the kernel supports CPU clocks at all.
If not, record it for the future. */
r = INTERNAL_VSYSCALL (clock_getres, err, 2,
MAKE_PROCESS_CPUCLOCK (0, CPUCLOCK_SCHED),
NULL);
if (INTERNAL_SYSCALL_ERROR_P (r, err))
__libc_missing_posix_cpu_timers = 1;
}
}
}
return e;
}
#endif
#ifdef __ASSUME_POSIX_TIMERS
/* This means the REALTIME clock is definitely supported in the
@ -73,4 +128,22 @@ extern int __libc_missing_posix_timers attribute_hidden;
# define HANDLED_REALTIME 1
#endif
#if __ASSUME_POSIX_CPU_TIMERS > 0
# define HANDLED_CPUTIME 1
# define SYSDEP_SETTIME_CPU \
retval = INLINE_SYSCALL (clock_settime, 2, clock_id, tp)
#elif defined __NR_clock_settime
# define SYSDEP_SETTIME_CPU \
retval = maybe_syscall_settime_cpu (clock_id, tp); \
if (retval == 0) \
break; \
if (retval != EINVAL || !__libc_missing_posix_cpu_timers) \
{ \
__set_errno (retval); \
retval = -1; \
break; \
} \
do { } while (0)
#endif
#include <sysdeps/unix/clock_settime.c>