X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=liblttng-ust%2Fust-core.c;fp=liblttng-ust%2Fust-core.c;h=e8dff983279e3ec869ca9bb7b15274852e300919;hb=ebabbf580131acd1fe246c4d31fc5c044d36a038;hp=abea7bbdffb137fdbbae86e2d1c7c4f2422372bb;hpb=d37ecb3fc622dee6f80f84c21f38d32eef407262;p=lttng-ust.git

diff --git a/liblttng-ust/ust-core.c b/liblttng-ust/ust-core.c
index abea7bbd..e8dff983 100644
--- a/liblttng-ust/ust-core.c
+++ b/liblttng-ust/ust-core.c
@@ -28,6 +28,7 @@
 #include "jhash.h"
 
 static CDS_LIST_HEAD(lttng_transport_list);
+static CDS_LIST_HEAD(lttng_counter_transport_list);
 
 struct lttng_transport *lttng_transport_find(const char *name)
 {
@@ -40,6 +41,17 @@ struct lttng_transport *lttng_transport_find(const char *name)
 	return NULL;
 }
 
+struct lttng_counter_transport *lttng_counter_transport_find(const char *name)
+{
+	struct lttng_counter_transport *transport;
+
+	cds_list_for_each_entry(transport, &lttng_counter_transport_list, node) {
+		if (!strcmp(transport->name, name))
+			return transport;
+	}
+	return NULL;
+}
+
 /**
  * lttng_transport_register - LTT transport registration
  * @transport: transport structure
@@ -62,6 +74,28 @@ void lttng_transport_unregister(struct lttng_transport *transport)
 	cds_list_del(&transport->node);
 }
 
+/**
+ * lttng_counter_transport_register - LTTng counter transport registration
+ * @transport: transport structure
+ *
+ * Registers a counter transport which can be used as output to extract
+ * the data out of LTTng. Called with ust_lock held.
+ */
+void lttng_counter_transport_register(struct lttng_counter_transport *transport)
+{
+	cds_list_add_tail(&transport->node, &lttng_counter_transport_list);
+}
+
+/**
+ * lttng_counter_transport_unregister - LTTng counter transport unregistration
+ * @transport: transport structure
+ * Called with ust_lock held.
+ */
+void lttng_counter_transport_unregister(struct lttng_counter_transport *transport)
+{
+	cds_list_del(&transport->node);
+}
+
 /*
  * Needed by comm layer.
  */