From 30bb245b67c5be41a53203a5cc874e84985c528a Mon Sep 17 00:00:00 2001
From: Bryan Ward <bcw@cs.unc.edu>
Date: Fri, 10 Aug 2012 23:05:11 -0400
Subject: Check for valid fdsos in a dgl request.

Apply bitwise operations to quickly check if the set of resources
requested are contained within one group.
---
 include/litmus/locking.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'include')

diff --git a/include/litmus/locking.h b/include/litmus/locking.h
index 203466933f3c..8e501c326b8b 100644
--- a/include/litmus/locking.h
+++ b/include/litmus/locking.h
@@ -5,6 +5,8 @@
 
 struct litmus_lock_ops;
 
+extern struct fdso_ops generic_lock_ops;
+
 /* Generic base struct for LITMUS^RT userspace semaphores.
  * This structure should be embedded in protocol-specific semaphores.
  */
@@ -34,4 +36,15 @@ struct litmus_lock_ops {
 	void (*deallocate)(struct litmus_lock*);
 };
 
+static inline bool is_lock(struct od_table_entry* entry)
+{
+	return entry->class == &generic_lock_ops;
+}
+
+static inline struct litmus_lock* get_lock(struct od_table_entry* entry)
+{
+	BUG_ON(!is_lock(entry));
+	return (struct litmus_lock*) entry->obj->obj;
+}
+
 #endif
-- 
cgit v1.2.2