summaryrefslogtreecommitdiff
path: root/libpthread/nptl/pthread_mutexattr_getprioceiling.c
diff options
context:
space:
mode:
Diffstat (limited to 'libpthread/nptl/pthread_mutexattr_getprioceiling.c')
-rw-r--r--libpthread/nptl/pthread_mutexattr_getprioceiling.c48
1 files changed, 48 insertions, 0 deletions
diff --git a/libpthread/nptl/pthread_mutexattr_getprioceiling.c b/libpthread/nptl/pthread_mutexattr_getprioceiling.c
new file mode 100644
index 000000000..29e3eb218
--- /dev/null
+++ b/libpthread/nptl/pthread_mutexattr_getprioceiling.c
@@ -0,0 +1,48 @@
+/* Get priority ceiling setting from 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 <pthreadP.h>
+
+
+int
+pthread_mutexattr_getprioceiling (
+ const pthread_mutexattr_t *attr,
+ int *prioceiling)
+{
+ const struct pthread_mutexattr *iattr;
+ int ceiling;
+
+ iattr = (const struct pthread_mutexattr *) attr;
+
+ ceiling = ((iattr->mutexkind & PTHREAD_MUTEXATTR_PRIO_CEILING_MASK)
+ >> PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT);
+
+ if (! ceiling)
+ {
+ if (__sched_fifo_min_prio == -1)
+ __init_sched_fifo_prio ();
+ if (ceiling < __sched_fifo_min_prio)
+ ceiling = __sched_fifo_min_prio;
+ }
+
+ *prioceiling = ceiling;
+
+ return 0;
+}