pthread_atfork.c (2778B) - Raw
1 /* Copyright (C) 2002-2021 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. 4 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. 9 10 In addition to the permissions in the GNU Lesser General Public 11 License, the Free Software Foundation gives you unlimited 12 permission to link the compiled version of this file with other 13 programs, and to distribute those programs without any restriction 14 coming from the use of this file. (The GNU Lesser General Public 15 License restrictions do apply in other respects; for example, they 16 cover modification of the file, and distribution when not linked 17 into another program.) 18 19 Note that people who make modified versions of this file are not 20 obligated to grant this special exception for their modified 21 versions; it is their choice whether to do so. The GNU Lesser 22 General Public License gives permission to release a modified 23 version without this exception; this exception also makes it 24 possible to release a modified version which carries forward this 25 exception. 26 27 The GNU C Library is distributed in the hope that it will be useful, 28 but WITHOUT ANY WARRANTY; without even the implied warranty of 29 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 30 Lesser General Public License for more details. 31 32 You should have received a copy of the GNU Lesser General Public 33 License along with the GNU C Library; if not, see 34 <https://www.gnu.org/licenses/>. */ 35 36 extern int __pthread_atfork (void (*prepare) (void), void (*parent) (void), 37 void (*child) (void)); 38 extern int __register_atfork (void (*__prepare) (void), 39 void (*__parent) (void), 40 void (*__child) (void), 41 void *dso_handle); 42 libc_hidden_proto (__register_atfork) 43 extern void *__dso_handle __attribute__ ((__visibility__ ("hidden"))); 44 45 /* Hide the symbol so that no definition but the one locally in the 46 executable or DSO is used. */ 47 int 48 #ifndef __pthread_atfork 49 /* Don't mark the compatibility function as hidden. */ 50 attribute_hidden 51 #endif 52 __pthread_atfork (void (*prepare) (void), void (*parent) (void), 53 void (*child) (void)) 54 { 55 return __register_atfork (prepare, parent, child, __dso_handle); 56 } 57 #ifndef __pthread_atfork 58 extern int pthread_atfork (void (*prepare) (void), void (*parent) (void), 59 void (*child) (void)) attribute_hidden; 60 weak_alias (__pthread_atfork, pthread_atfork) 61 #endif