summaryrefslogtreecommitdiff
path: root/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h
blob: 4f60558bfc10423f112fc55b4fff7e81a812a3d9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
/* Copyright (C) 2003, 2006 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, see
   <http://www.gnu.org/licenses/>.  */

#include <sysdep.h>
#include <tls.h>
#ifndef __ASSEMBLER__
# include <nptl/pthreadP.h>
#endif

#if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt

# ifdef IS_IN_libpthread
#  define __local_multiple_threads	__pthread_multiple_threads
# elif !defined NOT_IN_libc
#  define __local_multiple_threads	__libc_multiple_threads
# endif

# if defined IS_IN_libpthread || !defined NOT_IN_libc
extern int __local_multiple_threads attribute_hidden;
#  define SINGLE_THREAD_P \
	__builtin_expect (__local_multiple_threads == 0, 1)
# else
#  define SINGLE_THREAD_P \
	__builtin_expect (THREAD_GETMEM (THREAD_SELF, \
				   header.multiple_threads) == 0, 1)
# endif

#else

# define SINGLE_THREAD_P (1)
# define NO_CANCELLATION 1

#endif

#define RTLD_SINGLE_THREAD_P \
  __builtin_expect (THREAD_GETMEM (THREAD_SELF, \
				   header.multiple_threads) == 0, 1)