return field_type;
}
+struct bt_ctf_field_type *bt_ctf_event_class_get_context_type(
+ struct bt_ctf_event_class *event_class)
+{
+ struct bt_ctf_field_type *context_type = NULL;
+
+ if (!event_class || !event_class->context) {
+ goto end;
+ }
+
+ bt_ctf_field_type_get(event_class->context);
+ context_type = event_class->context;
+end:
+ return context_type;
+}
+
+int bt_ctf_event_class_set_context_type(
+ struct bt_ctf_event_class *event_class,
+ struct bt_ctf_field_type *context)
+{
+ int ret = 0;
+
+ if (!event_class || !context || event_class->frozen) {
+ ret = -1;
+ goto end;
+ }
+
+ if (bt_ctf_field_type_get_type_id(context) != CTF_TYPE_STRUCT) {
+ ret = -1;
+ goto end;
+ }
+
+ bt_ctf_field_type_get(context);
+ bt_ctf_field_type_put(event_class->context);
+ event_class->context = context;
+end:
+ return ret;
+
+}
+
void bt_ctf_event_class_get(struct bt_ctf_event_class *event_class)
{
if (!event_class) {
bt_ctf_event_class_get(event_class);
bt_ctf_event_class_freeze(event_class);
event->event_class = event_class;
- event->context_payload = bt_ctf_field_create(event_class->context);
+ if (event_class->context) {
+ event->context_payload = bt_ctf_field_create(
+ event_class->context);
+ }
event->fields_payload = bt_ctf_field_create(event_class->fields);
end:
return event;
return field;
}
+struct bt_ctf_field *bt_ctf_event_get_event_context(
+ struct bt_ctf_event *event)
+{
+ struct bt_ctf_field *context = NULL;
+
+ if (!event || !event->context_payload) {
+ goto end;
+ }
+
+ context = event->context_payload;
+ bt_ctf_field_get(context);
+end:
+ return context;
+}
+
+int bt_ctf_event_set_event_context(struct bt_ctf_event *event,
+ struct bt_ctf_field *context)
+{
+ int ret = 0;
+ struct bt_ctf_field_type *field_type = NULL;
+
+ if (!event || !context) {
+ ret = -1;
+ goto end;
+ }
+
+ field_type = bt_ctf_field_get_type(context);
+ if (field_type != event->event_class->context) {
+ ret = -1;
+ goto end;
+ }
+
+ bt_ctf_field_get(context);
+ bt_ctf_field_put(event->context_payload);
+ event->context_payload = context;
+end:
+ if (field_type) {
+ bt_ctf_field_type_put(field_type);
+ }
+ return ret;
+}
+
void bt_ctf_event_get(struct bt_ctf_event *event)
{
if (!event) {
* bt_ctf_event_class_set_stream_class for explanation.
*/
event_class = container_of(ref, struct bt_ctf_event_class, ref_count);
- bt_ctf_field_type_put(event_class->context);
- bt_ctf_field_type_put(event_class->fields);
+ if (event_class->context) {
+ bt_ctf_field_type_put(event_class->context);
+ }
+ if (event_class->fields) {
+ bt_ctf_field_type_put(event_class->fields);
+ }
g_free(event_class);
}
event = container_of(ref, struct bt_ctf_event,
ref_count);
- bt_ctf_event_class_put(event->event_class);
- bt_ctf_field_put(event->context_payload);
- bt_ctf_field_put(event->fields_payload);
+ if (event->event_class) {
+ bt_ctf_event_class_put(event->event_class);
+ }
+ if (event->context_payload) {
+ bt_ctf_field_put(event->context_payload);
+ }
+ if (event->fields_payload) {
+ bt_ctf_field_put(event->fields_payload);
+ }
g_free(event);
}
extern struct bt_ctf_field_type *bt_ctf_event_class_get_field_by_name(
struct bt_ctf_event_class *event_class, const char *name);
+/*
+ * bt_ctf_event_class_get_context_type: Get an event class's context type
+ *
+ * @param event_class Event class.
+ *
+ * Returns a field type (a structure) on success, NULL on error.
+ */
+extern struct bt_ctf_field_type *bt_ctf_event_class_get_context_type(
+ struct bt_ctf_event_class *event_class);
+
+/*
+ * bt_ctf_event_class_set_context_type: Set an event class's context type
+ *
+ * @param event_class Event class.
+ * @param context Event context field type (must be a structure).
+ *
+ * Returns 0 on success, a negative value on error.
+ */
+extern int bt_ctf_event_class_set_context_type(
+ struct bt_ctf_event_class *event_class,
+ struct bt_ctf_field_type *context);
+
/*
* bt_ctf_event_class_get and bt_ctf_event_class_put: increment and decrement
* the event class' reference count.
extern struct bt_ctf_field *bt_ctf_event_get_payload_by_index(
struct bt_ctf_event *event, int index);
+/*
+ * bt_ctf_event_get_event_context: Get an event's context
+ *
+ * @param event_class Event class.
+ *
+ * Returns a field on success (a structure), NULL on error.
+ *
+ * Note: This function is named this way instead of the expected
+ * "bt_ctf_event_get_context" in order to work around a name clash with
+ * an unrelated function bearing this name in context.h.
+ */
+extern struct bt_ctf_field *bt_ctf_event_get_event_context(
+ struct bt_ctf_event *event);
+
+/*
+ * bt_ctf_event_set_event_context: Set an event's context
+ *
+ * @param event Event.
+ * @param context Event context field (must match the event class'
+ * context type).
+ *
+ * Returns 0 on success, a negative value on error.
+ */
+extern int bt_ctf_event_set_event_context(struct bt_ctf_event *event,
+ struct bt_ctf_field *context);
+
/*
* bt_ctf_event_get and bt_ctf_event_put: increment and decrement
* the event's reference count.