mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-10 23:30:07 +00:00
73f7c32c47
Update. 2004-09-02 Steven Munroe <sjmunroe@us.ibm.com> [BZ #357] * stdlib/tst-setcontext.c (test_stack): Added test for stack clobber. (main): Call test_stack. * sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext.S (__getcontext): Push stack frame then save parms in local frame. Improve instruction scheduling. * sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext.S (__swapcontext): Likewise.
73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
/* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
|
|
|
|
The GNU C Library 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 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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 the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
#include <stdbool.h>
|
|
#include <time.h>
|
|
#include <sysdep.h>
|
|
#include "pthreadP.h"
|
|
#include <kernel-features.h>
|
|
|
|
|
|
int
|
|
pthread_condattr_setclock (attr, clock_id)
|
|
pthread_condattr_t *attr;
|
|
clockid_t clock_id;
|
|
{
|
|
/* Only a few clocks are allowed. CLOCK_REALTIME is always allowed.
|
|
CLOCK_MONOTONIC only if the kernel has the necessary support. */
|
|
if (clock_id == CLOCK_MONOTONIC)
|
|
{
|
|
#ifndef __ASSUME_POSIX_TIMERS
|
|
# ifdef __NR_clock_getres
|
|
/* Check whether the clock is available. */
|
|
static int avail;
|
|
|
|
if (avail == 0)
|
|
{
|
|
struct timespec ts;
|
|
|
|
INTERNAL_SYSCALL_DECL (err);
|
|
int val;
|
|
val = INTERNAL_SYSCALL (clock_getres, err, 2, CLOCK_MONOTONIC, &ts);
|
|
avail = INTERNAL_SYSCALL_ERROR_P (val, err) ? -1 : 1;
|
|
}
|
|
|
|
if (avail < 0)
|
|
# endif
|
|
/* Not available. */
|
|
return EINVAL;
|
|
#endif
|
|
}
|
|
else if (clock_id != CLOCK_REALTIME)
|
|
/* If more clocks are allowed some day the storing of the clock ID
|
|
in the pthread_cond_t structure needs to be adjusted. */
|
|
return EINVAL;
|
|
|
|
/* Make sure the value fits in the bits we reserved. */
|
|
assert (clock_id < (1 << COND_CLOCK_BITS));
|
|
|
|
int *valuep = &((struct pthread_condattr *) attr)->value;
|
|
|
|
*valuep = (*valuep & ~(1 << (COND_CLOCK_BITS + 1)) & ~1) | (clock_id << 1);
|
|
|
|
return 0;
|
|
}
|