X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=include%2Fbabeltrace%2Fctf-ir%2Fref.h;h=acc89d175b6ddda805cb5f686cea04ff8cb6fe8c;hb=e693822d3c00dbca7336ee2f9ba8f756599c7a3b;hp=fa612ca0a9ed33174952dce36a2c5e0f36b12b76;hpb=de3dd40e6fcad56e227f5fc8a8290fbaa88b4e07;p=babeltrace.git

diff --git a/include/babeltrace/ctf-ir/ref.h b/include/babeltrace/ctf-ir/ref.h
index fa612ca0..acc89d17 100644
--- a/include/babeltrace/ctf-ir/ref.h
+++ b/include/babeltrace/ctf-ir/ref.h
@@ -50,6 +50,22 @@
 		(_obj) = NULL;		\
 	} while (0)
 
+/*
+ * BT_CTF_MOVE: moves the ownership of a CTF object, setting the old
+ *	owner to NULL.
+ *
+ * This macro sets the variable _dst to the value of the variable _src,
+ * then sets _src to NULL, effectively moving the ownership of a CTF
+ * object from one variable to the other.
+ *
+ * @param obj CTF IR object.
+ */
+#define BT_CTF_MOVE(_dst, _src)		\
+	do {				\
+		(_dst) = (_src);	\
+		(_src) = NULL;		\
+	} while (0)
+
 /*
  * bt_ctf_get: increments the reference count of a CTF IR object.
  *