1 /* Copyright (C) 2002 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
21 #include <lowlevellock.h>
23 /* The fork generation counter, defined in libpthread. */
24 extern unsigned long int __fork_generation attribute_hidden;
26 /* Pointer to the fork generation counter in the thread library. */
27 extern unsigned long int *__fork_generation_pointer attribute_hidden;
29 /* Lock to protect handling of fork handlers. */
30 extern lll_lock_t __fork_lock attribute_hidden;
32 /* Lists of registered fork handlers. */
33 extern list_t __fork_prepare_list attribute_hidden;
34 extern list_t __fork_parent_list attribute_hidden;
35 extern list_t __fork_child_list attribute_hidden;
38 /* Elements of the fork handler lists. */
42 void (*handler) (void);
47 /* Function to call to unregister fork handlers. */
48 extern void __unregister_atfork (void *dso_handle) attribute_hidden;
49 #define UNREGISTER_ATFORK(dso_handle) __unregister_atfork (dso_handle)
52 /* C library side function to register new fork handlers. */
53 extern int __register_atfork (void (*__prepare) (void),
54 void (*__parent) (void),
55 void (*__child) (void),
58 /* Register the generation counter in the libpthread with the libc. */
59 extern void __libc_pthread_int (unsigned long int *__ptr,
60 void (*reclaim) (void));