X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=blobdiff_plain;f=include%2Fbabeltrace%2Fctf%2Fcallbacks.h;h=128d597b0c87b22f5e11656cb76607ddb9ab7a0c;hp=328762ca14c3e968b10aa62a5c8a26ff202ad73d;hb=f5464725ea2c2344ffa73a67eac22b9f0ddb65dd;hpb=0ba1c5f970ddc94bf9bdeb0efd3cfe385c5eebe8

diff --git a/include/babeltrace/ctf/callbacks.h b/include/babeltrace/ctf/callbacks.h
index 328762ca..128d597b 100644
--- a/include/babeltrace/ctf/callbacks.h
+++ b/include/babeltrace/ctf/callbacks.h
@@ -25,6 +25,10 @@
 
 #include <babeltrace/format.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* Forward declarations */
 struct bt_ctf_iter;
 struct bt_dependencies;
@@ -58,13 +62,13 @@ void babeltrace_dependencies_destroy(struct bt_dependencies *dep);
  *            
  * @callback: function pointer to call
  * @depends: struct bt_dependency detailing the required computation results.
- *           Ends with 0.
+ *           Ends with 0. NULL is accepted as empty dependency.
  * @weak_depends: struct bt_dependency detailing the optional computation
  *                results that can be optionally consumed by this
- *                callback.
+ *                callback. NULL is accepted as empty dependency.
  * @provides: struct bt_dependency detailing the computation results
  *            provided by this callback.
- *            Ends with 0.
+ *            Ends with 0. NULL is accepted as empty dependency.
  *
  * "depends", "weak_depends" and "provides" memory is handled by the
  * babeltrace library after this call succeeds or fails. These objects
@@ -97,4 +101,8 @@ enum {
 	BT_FLAGS_FREE_PRIVATE_DATA	= (1 << 0),
 };
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /*_BABELTRACE_CTF_CALLBACKS_H */