mirror of
https://sourceware.org/git/glibc.git
synced 2025-11-03 20:53:13 +03:00
41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
69 lines
2.1 KiB
C
69 lines
2.1 KiB
C
/* Copyright (C) 1994, 1995, 1996 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
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 <hurd/sigpreempt.h>
|
|
#include <hurd/signal.h>
|
|
#include <assert.h>
|
|
|
|
void
|
|
hurd_preempt_signals (struct hurd_signal_preemptor *preemptor)
|
|
{
|
|
__mutex_lock (&_hurd_siglock);
|
|
preemptor->next = _hurdsig_preemptors;
|
|
_hurdsig_preemptors = preemptor;
|
|
_hurdsig_preempted_set |= preemptor->signals;
|
|
__mutex_unlock (&_hurd_siglock);
|
|
}
|
|
|
|
void
|
|
hurd_unpreempt_signals (struct hurd_signal_preemptor *preemptor)
|
|
{
|
|
struct hurd_signal_preemptor **p;
|
|
sigset_t preempted = 0;
|
|
|
|
__mutex_lock (&_hurd_siglock);
|
|
|
|
p = &_hurdsig_preemptors;
|
|
while (*p)
|
|
if (*p == preemptor)
|
|
{
|
|
/* Found it; take it off the chain. */
|
|
*p = (*p)->next;
|
|
if ((preemptor->signals & preempted) != preemptor->signals)
|
|
{
|
|
/* This might have been the only preemptor for some
|
|
of those signals, so we must collect the full mask
|
|
from the others. */
|
|
struct hurd_signal_preemptor *pp;
|
|
for (pp = *p; pp; pp = pp->next)
|
|
preempted |= pp->signals;
|
|
_hurdsig_preempted_set = preempted;
|
|
}
|
|
__mutex_unlock (&_hurd_siglock);
|
|
return;
|
|
}
|
|
else
|
|
{
|
|
preempted |= (*p)->signals;
|
|
p = &(*p)->next;
|
|
}
|
|
|
|
__mutex_unlock (&_hurd_siglock); /* Avoid deadlock during death rattle. */
|
|
assert (! "removing absent preemptor");
|
|
}
|