glibc/nptl/cleanup_compat.c
Florian Weimer 1f2e5bfe48 nptl: Move legacy cancelation handling into libc as compat symbols
This affects _pthread_cleanup_pop, _pthread_cleanup_pop_restore,
_pthread_cleanup_push, _pthread_cleanup_push_defer.  The symbols
have been moved using scripts/move-symbol-to-libc.py.

No new symbol versions are added because the symbols are turned into
compatibility symbols at the same time.

__pthread_cleanup_pop and __pthread_cleanup_push are added as
GLIBC_PRIVATE symbols because they are also used internally, for
glibc's own cancellation handling.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
2021-04-21 19:49:50 +02:00

57 lines
1.9 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 <shlib-compat.h>
#include <stdlib.h>
#include "pthreadP.h"
void
__pthread_cleanup_push (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);
THREAD_SETMEM (self, cleanup, buffer);
}
libc_hidden_def (__pthread_cleanup_push)
void
__pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer, int execute)
{
struct pthread *self __attribute ((unused)) = THREAD_SELF;
THREAD_SETMEM (self, cleanup, buffer->__prev);
/* If necessary call the cleanup routine after we removed the
current cleanup block from the list. */
if (execute)
buffer->__routine (buffer->__arg);
}
libc_hidden_def (__pthread_cleanup_pop)
#if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_34)
compat_symbol (libpthread, __pthread_cleanup_push, _pthread_cleanup_push,
GLIBC_2_0);
compat_symbol (libpthread, __pthread_cleanup_pop, _pthread_cleanup_pop,
GLIBC_2_0);
#endif