ovsdb: Save some space in the log for newly inserted records.

[cascardo/ovs.git] / lib / uuid.c

diff --git a/lib/uuid.c b/lib/uuid.c
index 264d9bf..620c039 100644 (file)
--- a/lib/uuid.c
+++ b/lib/uuid.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2008, 2009 Nicira Networks
+/* Copyright (c) 2008, 2009, 2010 Nicira Networks
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -107,6 +107,14 @@ uuid_zero(struct uuid *uuid)
     uuid->parts[0] = uuid->parts[1] = uuid->parts[2] = uuid->parts[3] = 0;
 }
 
+/* Returns true if 'uuid' is all zero, otherwise false. */
+bool
+uuid_is_zero(const struct uuid *uuid)
+{
+    return (!uuid->parts[0] && !uuid->parts[1]
+            && !uuid->parts[2] && !uuid->parts[3]);
+}
+
 /* Compares 'a' and 'b'.  Returns a negative value if 'a < b', zero if 'a ==
  * b', or positive if 'a > b'.  The ordering is lexicographical order of the
  * conventional way of writing out UUIDs as strings. */