glibc/nptl/cleanup_defer.c
Ulrich Drepper 09402f5bc1 Update.
2003-03-25  Ulrich Drepper  <drepper@redhat.com>

	* csu/tst-atomic.c: Adjust tests to what atomic_add_negative and
	atomic_add_zero were supposed to do.
	* include/atomic.h: Adjust atomic_add_negative and atomic_add_zero
	to x86 behavior.

	* sysdeps/generic/bits/typesizes.h (__TIMER_T_TYPE): Define as void*.
	This matches the new timer implementation.
	* sysdeps/unix/sysv/linux/bits/siginfo.h (struct siginfo): Adjust
	timer info for what the kernel provides these days.
	(struct sigevent): Add _tid field.
	Define SIGEV_THREAD_ID.

	* Versions.def (librt): Add GLIBC_2.3.3.

	* abilist/libpthread.abilist: Update for nptl.
2003-03-25 20:41:26 +00:00

85 lines
2.7 KiB
C

/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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 "pthreadP.h"
#include <atomic.h>
void
_pthread_cleanup_push_defer (buffer, routine, arg)
struct _pthread_cleanup_buffer *buffer;
void (*routine) (void *);
void *arg;
{
struct pthread *self = THREAD_SELF;
buffer->__routine = routine;
buffer->__arg = arg;
buffer->__prev = THREAD_GETMEM (self, cleanup);
int cancelhandling = THREAD_GETMEM (self, cancelhandling);
/* Disable asynchronous cancellation for now. */
if (__builtin_expect (cancelhandling & CANCELTYPE_BITMASK, 0))
{
while (atomic_compare_and_exchange_bool_acq (&self->cancelhandling,
cancelhandling
& ~CANCELTYPE_BITMASK,
cancelhandling))
cancelhandling = self->cancelhandling;
}
buffer->__canceltype = (cancelhandling & CANCELTYPE_BITMASK
? PTHREAD_CANCEL_ASYNCHRONOUS
: PTHREAD_CANCEL_DEFERRED);
THREAD_SETMEM (self, cleanup, buffer);
}
strong_alias (_pthread_cleanup_push_defer, __pthread_cleanup_push_defer)
void
_pthread_cleanup_pop_restore (buffer, execute)
struct _pthread_cleanup_buffer *buffer;
int execute;
{
struct pthread *self = THREAD_SELF;
THREAD_SETMEM (self, cleanup, buffer->__prev);
int cancelhandling;
if (__builtin_expect (buffer->__canceltype != PTHREAD_CANCEL_DEFERRED, 0)
&& ((cancelhandling = THREAD_GETMEM (self, cancelhandling))
& CANCELTYPE_BITMASK) == 0)
{
while (atomic_compare_and_exchange_bool_acq (&self->cancelhandling,
cancelhandling
| CANCELTYPE_BITMASK,
cancelhandling))
cancelhandling = self->cancelhandling;
CANCELLATION_P (self);
}
/* If necessary call the cleanup routine after we removed the
current cleanup block from the list. */
if (execute)
buffer->__routine (buffer->__arg);
}
strong_alias (_pthread_cleanup_pop_restore, __pthread_cleanup_pop_restore)