diff options
Diffstat (limited to 'libpthread/nptl/pthread_mutexattr_setrobust.c')
| -rw-r--r-- | libpthread/nptl/pthread_mutexattr_setrobust.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/libpthread/nptl/pthread_mutexattr_setrobust.c b/libpthread/nptl/pthread_mutexattr_setrobust.c new file mode 100644 index 000000000..fe94fd266 --- /dev/null +++ b/libpthread/nptl/pthread_mutexattr_setrobust.c @@ -0,0 +1,44 @@ +/* Copyright (C) 2005, 2010 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@redhat.com>, 2005. + + 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_setrobust ( + pthread_mutexattr_t *attr, + int robustness) +{ + if (robustness != PTHREAD_MUTEX_STALLED_NP + && __builtin_expect (robustness != PTHREAD_MUTEX_ROBUST_NP, 0)) + return EINVAL; + + struct pthread_mutexattr *iattr = (struct pthread_mutexattr *) attr; + + /* We use bit 30 to signal whether the mutex is going to be + robust or not. */ + if (robustness == PTHREAD_MUTEX_STALLED_NP) + iattr->mutexkind &= ~PTHREAD_MUTEXATTR_FLAG_ROBUST; + else + iattr->mutexkind |= PTHREAD_MUTEXATTR_FLAG_ROBUST; + + return 0; +} +weak_alias (pthread_mutexattr_setrobust, pthread_mutexattr_setrobust_np) |