| yuezonghe | 824eb0c | 2024-06-27 02:32:26 -0700 | [diff] [blame] | 1 | /* Copyright (C) 2005, 2010 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. |
| 3 | Contributed by Ulrich Drepper <drepper@redhat.com>, 2005. |
| 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, write to the Free |
| 17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 18 | 02111-1307 USA. */ |
| 19 | |
| 20 | #include <errno.h> |
| 21 | #include <pthreadP.h> |
| 22 | |
| 23 | |
| 24 | int |
| 25 | pthread_mutexattr_setrobust ( |
| 26 | pthread_mutexattr_t *attr, |
| 27 | int robustness) |
| 28 | { |
| 29 | if (robustness != PTHREAD_MUTEX_STALLED_NP |
| 30 | && __builtin_expect (robustness != PTHREAD_MUTEX_ROBUST_NP, 0)) |
| 31 | return EINVAL; |
| 32 | |
| 33 | struct pthread_mutexattr *iattr = (struct pthread_mutexattr *) attr; |
| 34 | |
| 35 | /* We use bit 30 to signal whether the mutex is going to be |
| 36 | robust or not. */ |
| 37 | if (robustness == PTHREAD_MUTEX_STALLED_NP) |
| 38 | iattr->mutexkind &= ~PTHREAD_MUTEXATTR_FLAG_ROBUST; |
| 39 | else |
| 40 | iattr->mutexkind |= PTHREAD_MUTEXATTR_FLAG_ROBUST; |
| 41 | |
| 42 | return 0; |
| 43 | } |
| 44 | weak_alias (pthread_mutexattr_setrobust, pthread_mutexattr_setrobust_np) |