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[thirdparty/glibc.git] / nptl / pthread_mutexattr_settype.c
index c77fe79df5e47a5a4a4e44ba44cbcea7410198d7..52a6ec08ddfcfb1c2f7d36f7f0810b1106222132 100644 (file)
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2019 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
 
    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.  */
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
 
 #include <errno.h>
 #include <pthreadP.h>
 
 
 int
-__pthread_mutexattr_settype (attr, kind)
-     pthread_mutexattr_t *attr;
-     int kind;
+__pthread_mutexattr_settype (pthread_mutexattr_t *attr, int kind)
 {
   struct pthread_mutexattr *iattr;
 
   if (kind < PTHREAD_MUTEX_NORMAL || kind > PTHREAD_MUTEX_ADAPTIVE_NP)
     return EINVAL;
 
+  /* Cannot distinguish between DEFAULT and NORMAL. So any settype
+     call disables elision for now.  */
+  if (kind == PTHREAD_MUTEX_NORMAL)
+    kind |= PTHREAD_MUTEX_NO_ELISION_NP;
+
   iattr = (struct pthread_mutexattr *) attr;
 
-  /* We use bit 31 to signal whether the mutex is going to be
-     process-shared or not.  */
-  iattr->mutexkind = (iattr->mutexkind & 0x80000000) | kind;
+  iattr->mutexkind = (iattr->mutexkind & PTHREAD_MUTEXATTR_FLAG_BITS) | kind;
 
   return 0;
 }
 weak_alias (__pthread_mutexattr_settype, pthread_mutexattr_setkind_np)
-strong_alias (__pthread_mutexattr_settype, pthread_mutexattr_settype)
+weak_alias (__pthread_mutexattr_settype, pthread_mutexattr_settype)
+hidden_def (__pthread_mutexattr_settype)