mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-13 14:50:17 +00:00
7789a84923
This was due a wrong revert done on404656009b. Checked on x86_64-linux-gnu and i686-linux-gnu. (cherry picked from commitf27e5e2178)
99 lines
3.2 KiB
C
99 lines
3.2 KiB
C
/* Copyright (C) 2002-2021 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, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <stdlib.h>
|
|
#include "pthreadP.h"
|
|
#include <shlib-compat.h>
|
|
|
|
void
|
|
__cleanup_fct_attribute
|
|
___pthread_register_cancel_defer (__pthread_unwind_buf_t *buf)
|
|
{
|
|
struct pthread_unwind_buf *ibuf = (struct pthread_unwind_buf *) buf;
|
|
struct pthread *self = THREAD_SELF;
|
|
|
|
/* Store old info. */
|
|
ibuf->priv.data.prev = THREAD_GETMEM (self, cleanup_jmp_buf);
|
|
ibuf->priv.data.cleanup = THREAD_GETMEM (self, cleanup);
|
|
|
|
int cancelhandling = atomic_load_relaxed (&self->cancelhandling);
|
|
if (__glibc_unlikely (cancelhandling & CANCELTYPE_BITMASK))
|
|
{
|
|
int newval;
|
|
do
|
|
{
|
|
newval = cancelhandling & ~CANCELTYPE_BITMASK;
|
|
}
|
|
while (!atomic_compare_exchange_weak_acquire (&self->cancelhandling,
|
|
&cancelhandling,
|
|
newval));
|
|
}
|
|
|
|
ibuf->priv.data.canceltype = (cancelhandling & CANCELTYPE_BITMASK
|
|
? PTHREAD_CANCEL_ASYNCHRONOUS
|
|
: PTHREAD_CANCEL_DEFERRED);
|
|
|
|
/* Store the new cleanup handler info. */
|
|
THREAD_SETMEM (self, cleanup_jmp_buf, (struct pthread_unwind_buf *) buf);
|
|
}
|
|
versioned_symbol (libc, ___pthread_register_cancel_defer,
|
|
__pthread_register_cancel_defer, GLIBC_2_34);
|
|
|
|
#if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_3_3, GLIBC_2_34)
|
|
compat_symbol (libpthread, ___pthread_register_cancel_defer,
|
|
__pthread_register_cancel_defer, GLIBC_2_3_3);
|
|
#endif
|
|
|
|
void
|
|
__cleanup_fct_attribute
|
|
___pthread_unregister_cancel_restore (__pthread_unwind_buf_t *buf)
|
|
{
|
|
struct pthread *self = THREAD_SELF;
|
|
struct pthread_unwind_buf *ibuf = (struct pthread_unwind_buf *) buf;
|
|
|
|
THREAD_SETMEM (self, cleanup_jmp_buf, ibuf->priv.data.prev);
|
|
|
|
if (ibuf->priv.data.canceltype == PTHREAD_CANCEL_DEFERRED)
|
|
return;
|
|
|
|
int cancelhandling = atomic_load_relaxed (&self->cancelhandling);
|
|
if ((cancelhandling & CANCELTYPE_BITMASK) == 0)
|
|
{
|
|
int newval;
|
|
do
|
|
{
|
|
newval = cancelhandling | CANCELTYPE_BITMASK;
|
|
}
|
|
while (!atomic_compare_exchange_weak_acquire (&self->cancelhandling,
|
|
&cancelhandling, newval));
|
|
|
|
if (cancel_enabled_and_canceled (cancelhandling))
|
|
{
|
|
self->result = PTHREAD_CANCELED;
|
|
__do_cancel ();
|
|
}
|
|
}
|
|
}
|
|
versioned_symbol (libc, ___pthread_unregister_cancel_restore,
|
|
__pthread_unregister_cancel_restore, GLIBC_2_34);
|
|
|
|
#if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_3_3, GLIBC_2_34)
|
|
compat_symbol (libpthread, ___pthread_unregister_cancel_restore,
|
|
__pthread_unregister_cancel_restore, GLIBC_2_3_3);
|
|
#endif
|