2.5-18.1

nptl/pthread_mutexattr_setprotocol.c

@@ -0,0 +1,41 @@
+/* Change priority protocol setting in pthread_mutexattr_t.
+   Copyright (C) 2006 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2006.
+
+   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_setprotocol (attr, protocol)
+     pthread_mutexattr_t *attr;
+     int protocol;
+{
+  if (protocol != PTHREAD_PRIO_NONE
+      && protocol != PTHREAD_PRIO_INHERIT
+      && __builtin_expect (protocol != PTHREAD_PRIO_PROTECT, 0))
+    return EINVAL;
+
+  struct pthread_mutexattr *iattr = (struct pthread_mutexattr *) attr;
+
+  iattr->mutexkind = ((iattr->mutexkind & ~PTHREAD_MUTEXATTR_PROTOCOL_MASK)
+		      | (protocol << PTHREAD_MUTEXATTR_PROTOCOL_SHIFT));
+
+  return 0;
+}