1 /* Copyright (C) 2002-2021 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #include "pthreadP.h"
19 #include <tls.h>
20 #include <libc-lock.h>
21
22 void
__libc_cleanup_push_defer(struct _pthread_cleanup_buffer * buffer)23 __libc_cleanup_push_defer (struct _pthread_cleanup_buffer *buffer)
24 {
25 struct pthread *self = THREAD_SELF;
26
27 buffer->__prev = THREAD_GETMEM (self, cleanup);
28
29 /* Disable asynchronous cancellation for now. */
30 buffer->__canceltype = THREAD_GETMEM (self, canceltype);
31 THREAD_SETMEM (self, canceltype, PTHREAD_CANCEL_DEFERRED);
32
33 THREAD_SETMEM (self, cleanup, buffer);
34 }
libc_hidden_def(__libc_cleanup_push_defer)35 libc_hidden_def (__libc_cleanup_push_defer)
36
37 void
38 __libc_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer)
39 {
40 struct pthread *self = THREAD_SELF;
41
42 THREAD_SETMEM (self, cleanup, buffer->__prev);
43
44 THREAD_SETMEM (self, canceltype, buffer->__canceltype);
45 if (buffer->__canceltype == PTHREAD_CANCEL_ASYNCHRONOUS)
46 __pthread_testcancel ();
47 }
48 libc_hidden_def (__libc_cleanup_pop_restore)
49