2.5-18.1

1 files changed, 47 insertions, 0 deletions

diff --git a/nptl/pthread_mutexattr_setprioceiling.c b/nptl/pthread_mutexattr_setprioceiling.c
new file mode 100644
index 0000000000..9b7874f739
--- /dev/null
+++ b/nptl/pthread_mutexattr_setprioceiling.c
@@ -0,0 +1,47 @@
+/* Change priority ceiling 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_setprioceiling (attr, prioceiling)
+     pthread_mutexattr_t *attr;
+     int prioceiling;
+{
+  if (__sched_fifo_min_prio == -1)
+    __init_sched_fifo_prio ();
+
+  if (__builtin_expect (prioceiling < __sched_fifo_min_prio, 0)
+      || __builtin_expect (prioceiling > __sched_fifo_max_prio, 0)
+      || __builtin_expect ((prioceiling
+			    & (PTHREAD_MUTEXATTR_PRIO_CEILING_MASK
+			       >> PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT))
+			   != prioceiling, 0))
+    return EINVAL;
+
+  struct pthread_mutexattr *iattr = (struct pthread_mutexattr *) attr;
+
+  iattr->mutexkind = ((iattr->mutexkind & ~PTHREAD_MUTEXATTR_PRIO_CEILING_MASK)
+		      | (prioceiling << PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT));
+
+  return 0;
+}