1 /* Copyright (C) 2002, 2005 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 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. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, see 17 <http://www.gnu.org/licenses/>. */ 18 19 #include <errno.h> 20 #include <pthreadP.h> 21 22 23 int pthread_mutexattr_setpshared(pthread_mutexattr_t * attr,int pshared)24pthread_mutexattr_setpshared ( 25 pthread_mutexattr_t *attr, 26 int pshared) 27 { 28 struct pthread_mutexattr *iattr; 29 30 if (pshared != PTHREAD_PROCESS_PRIVATE 31 && __builtin_expect (pshared != PTHREAD_PROCESS_SHARED, 0)) 32 return EINVAL; 33 34 iattr = (struct pthread_mutexattr *) attr; 35 36 if (pshared == PTHREAD_PROCESS_PRIVATE) 37 iattr->mutexkind &= ~PTHREAD_MUTEXATTR_FLAG_PSHARED; 38 else 39 iattr->mutexkind |= PTHREAD_MUTEXATTR_FLAG_PSHARED; 40 41 return 0; 42 } 43