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authorAustin Foxley <austinf@cetoncorp.com>2010-02-16 12:27:18 -0800
committerAustin Foxley <austinf@cetoncorp.com>2010-02-16 12:27:18 -0800
commita032a6587011cbdac8c2f7e11f15dc4e592bbb55 (patch)
treeb8d8dfc6abf0168e098223c2134a3e4bd7640942 /libpthread/nptl/pthread_mutex_getprioceiling.c
parent70f1d42b13a741f603472f405299e5d2938aa728 (diff)
mass sync with glibc nptl
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
Diffstat (limited to 'libpthread/nptl/pthread_mutex_getprioceiling.c')
-rw-r--r--libpthread/nptl/pthread_mutex_getprioceiling.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/libpthread/nptl/pthread_mutex_getprioceiling.c b/libpthread/nptl/pthread_mutex_getprioceiling.c
new file mode 100644
index 000000000..1ce5eaebe
--- /dev/null
+++ b/libpthread/nptl/pthread_mutex_getprioceiling.c
@@ -0,0 +1,38 @@
+/* Get current priority ceiling of pthread_mutex_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_mutex_getprioceiling (mutex, prioceiling)
+ const pthread_mutex_t *mutex;
+ int *prioceiling;
+{
+ if (__builtin_expect ((mutex->__data.__kind
+ & PTHREAD_MUTEX_PRIO_PROTECT_NP) == 0, 0))
+ return EINVAL;
+
+ *prioceiling = (mutex->__data.__lock & PTHREAD_MUTEX_PRIO_CEILING_MASK)
+ >> PTHREAD_MUTEX_PRIO_CEILING_SHIFT;
+
+ return 0;
+}