actions: Make lttng_action reference countable

[lttng-tools.git] / src / common / actions / action.c

diff --git a/src/common/actions/action.c b/src/common/actions/action.c
index c6b57b9cff5c7a50a42325b68b5d8e3175f27794..1a541ce469efc22381f198261a484b9df7ee4f26 100644 (file)
--- a/src/common/actions/action.c
+++ b/src/common/actions/action.c
@@ -10,6 +10,7 @@
 #include <lttng/action/action-internal.h>
 #include <lttng/action/notify-internal.h>
 #include <lttng/action/rotate-session-internal.h>
+#include <lttng/action/snapshot-session-internal.h>
 #include <lttng/action/start-session-internal.h>
 #include <lttng/action/stop-session-internal.h>
 
@@ -22,6 +23,8 @@ static const char *lttng_action_type_string(enum lttng_action_type action_type)
                return "NOTIFY";
        case LTTNG_ACTION_TYPE_ROTATE_SESSION:
                return "ROTATE_SESSION";
+       case LTTNG_ACTION_TYPE_SNAPSHOT_SESSION:
+               return "SNAPSHOT_SESSION";
        case LTTNG_ACTION_TYPE_START_SESSION:
                return "START_SESSION";
        case LTTNG_ACTION_TYPE_STOP_SESSION:
@@ -52,6 +55,7 @@ void lttng_action_init(
                action_equal_cb equal,
                action_destroy_cb destroy)
 {
+       urcu_ref_init(&action->ref);
        action->type = type;
        action->validate = validate;
        action->serialize = serialize;
@@ -59,14 +63,35 @@ void lttng_action_init(
        action->destroy = destroy;
 }
 
-void lttng_action_destroy(struct lttng_action *action)
+static
+void action_destroy_ref(struct urcu_ref *ref)
+{
+       struct lttng_action *action =
+                       container_of(ref, struct lttng_action, ref);
+
+       action->destroy(action);
+}
+
+LTTNG_HIDDEN
+void lttng_action_get(struct lttng_action *action)
+{
+       urcu_ref_get(&action->ref);
+}
+
+LTTNG_HIDDEN
+void lttng_action_put(struct lttng_action *action)
 {
        if (!action) {
                return;
        }
 
        assert(action->destroy);
-       action->destroy(action);
+       urcu_ref_put(&action->ref, action_destroy_ref);
+}
+
+void lttng_action_destroy(struct lttng_action *action)
+{
+       lttng_action_put(action);
 }
 
 LTTNG_HIDDEN
@@ -139,6 +164,10 @@ ssize_t lttng_action_create_from_payload(struct lttng_payload_view *view,
                create_from_payload_cb =
                                lttng_action_rotate_session_create_from_payload;
                break;
+       case LTTNG_ACTION_TYPE_SNAPSHOT_SESSION:
+               create_from_payload_cb =
+                               lttng_action_snapshot_session_create_from_payload;
+               break;
        case LTTNG_ACTION_TYPE_START_SESSION:
                create_from_payload_cb =
                                lttng_action_start_session_create_from_payload;