/* Copyright (C) 2002 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. 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, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ #include <errno.h> #include <pthreadP.h> int pthread_mutexattr_setpshared (attr, pshared) pthread_mutexattr_t *attr; int pshared; { struct pthread_mutexattr *iattr; if (pshared != PTHREAD_PROCESS_PRIVATE && __builtin_expect (pshared != PTHREAD_PROCESS_SHARED, 0)) return EINVAL; iattr = (struct pthread_mutexattr *) attr; /* We use bit 31 to single whether the mutex is going to be process-shared or not. */ if (pshared == PTHREAD_PROCESS_PRIVATE) iattr->mutexkind &= ~0x80000000; else iattr->mutexkind |= 0x80000000; return 0; }