+ if (bt_ctf_validate_identifier(name)) {
+ goto error;
+ }
+
+ event_class = g_new0(struct bt_ctf_event_class, 1);
+ if (!event_class) {
+ goto error;
+ }
+
+ bt_ctf_ref_init(&event_class->ref_count);
+ event_class->fields = bt_ctf_field_type_structure_create();
+ if (!event_class->fields) {
+ goto error;
+ }
+
+ event_class->attributes = bt_ctf_attributes_create();
+ if (!event_class->attributes) {
+ goto error;
+ }
+
+ obj = bt_object_integer_create_init(-1);
+ if (!obj) {
+ goto error;
+ }
+
+ ret = bt_ctf_attributes_set_field_value(event_class->attributes,
+ "id", obj);
+ if (ret) {
+ goto error;
+ }
+
+ BT_OBJECT_PUT(obj);
+
+ obj = bt_object_string_create_init(name);
+ if (!obj) {
+ goto error;
+ }
+
+ ret = bt_ctf_attributes_set_field_value(event_class->attributes,
+ "name", obj);
+ if (ret) {
+ goto error;
+ }
+
+ BT_OBJECT_PUT(obj);
+
+ return event_class;
+
+error:
+ if (event_class) {
+ bt_ctf_event_class_put(event_class);
+ }
+
+ BT_OBJECT_PUT(obj);
+
+ return NULL;
+}
+
+const char *bt_ctf_event_class_get_name(struct bt_ctf_event_class *event_class)
+{
+ struct bt_object *obj = NULL;
+ const char *name = NULL;
+
+ if (!event_class) {
+ goto end;
+ }
+
+ obj = bt_ctf_attributes_get_field_value(event_class->attributes,
+ BT_CTF_EVENT_CLASS_ATTR_NAME_INDEX);
+ if (!obj) {
+ goto end;
+ }
+
+ if (bt_object_string_get(obj, &name)) {
+ name = NULL;
+ }
+
+end:
+ BT_OBJECT_PUT(obj);
+
+ return name;
+}
+
+int64_t bt_ctf_event_class_get_id(struct bt_ctf_event_class *event_class)
+{
+ struct bt_object *obj = NULL;
+ int64_t ret = 0;
+
+ if (!event_class) {
+ ret = -1;
+ goto end;
+ }
+
+ obj = bt_ctf_attributes_get_field_value(event_class->attributes,
+ BT_CTF_EVENT_CLASS_ATTR_ID_INDEX);
+ if (!obj) {
+ goto end;
+ }
+
+ if (bt_object_integer_get(obj, &ret)) {
+ ret = -1;
+ }
+
+ if (ret < 0) {
+ /* means ID is not set */
+ ret = -1;
+ goto end;
+ }
+
+end:
+ BT_OBJECT_PUT(obj);
+
+ return ret;
+}
+
+int bt_ctf_event_class_set_id(struct bt_ctf_event_class *event_class,
+ uint32_t id)
+{
+ int ret = 0;
+ struct bt_object *obj = NULL;
+
+ if (!event_class) {
+ ret = -1;
+ goto end;
+ }
+
+ if (event_class->stream_class) {
+ /*
+ * We don't allow changing the id if the event class has already
+ * been added to a stream class.
+ */
+ ret = -1;
+ goto end;
+ }
+
+ obj = bt_ctf_attributes_get_field_value(event_class->attributes,
+ BT_CTF_EVENT_CLASS_ATTR_ID_INDEX);
+ if (!obj) {
+ goto end;
+ }
+
+ if (bt_object_integer_set(obj, id)) {
+ ret = -1;
+ goto end;
+ }
+
+end:
+ BT_OBJECT_PUT(obj);
+
+ return ret;
+}
+
+int bt_ctf_event_class_set_attribute(
+ struct bt_ctf_event_class *event_class, const char *name,
+ struct bt_object *value)
+{
+ int ret = 0;
+
+ if (!event_class || !name || !value || event_class->frozen) {
+ ret = -1;
+ goto end;
+ }
+
+ if (!strcmp(name, "id") || !strcmp(name, "loglevel")) {
+ if (!bt_object_is_integer(value)) {
+ ret = -1;
+ goto end;
+ }
+ } else if (!strcmp(name, "name") || !strcmp(name, "model.emf.uri")) {
+ if (!bt_object_is_string(value)) {
+ ret = -1;
+ goto end;
+ }
+ } else {
+ /* unknown attribute */
+ ret = -1;
+ goto end;
+ }
+
+ /* "id" special case: >= 0 */
+ if (!strcmp(name, "id")) {
+ int64_t val;
+
+ ret = bt_object_integer_get(value, &val);
+
+ if (ret) {
+ goto end;
+ }
+
+ if (val < 0) {
+ ret = -1;
+ goto end;
+ }
+ }
+
+ ret = bt_ctf_attributes_set_field_value(event_class->attributes,
+ name, value);
+
+end:
+ return ret;
+}
+
+int bt_ctf_event_class_get_attribute_count(
+ struct bt_ctf_event_class *event_class)
+{
+ int ret = 0;
+
+ if (!event_class) {
+ ret = -1;
+ goto end;
+ }
+
+ ret = bt_ctf_attributes_get_count(event_class->attributes);
+
+end:
+ return ret;
+}
+
+const char *
+bt_ctf_event_class_get_attribute_name(
+ struct bt_ctf_event_class *event_class, int index)
+{
+ const char *ret;
+
+ if (!event_class) {
+ ret = NULL;
+ goto end;
+ }
+
+ ret = bt_ctf_attributes_get_field_name(event_class->attributes, index);
+
+end:
+ return ret;
+}
+
+struct bt_object *
+bt_ctf_event_class_get_attribute_value(struct bt_ctf_event_class *event_class,
+ int index)
+{
+ struct bt_object *ret;
+
+ if (!event_class) {
+ ret = NULL;
+ goto end;
+ }
+
+ ret = bt_ctf_attributes_get_field_value(event_class->attributes, index);
+
+end:
+ return ret;
+}
+
+struct bt_object *
+bt_ctf_event_class_get_attribute_value_by_name(
+ struct bt_ctf_event_class *event_class, const char *name)
+{
+ struct bt_object *ret;
+
+ if (!event_class || !name) {
+ ret = NULL;
+ goto end;
+ }
+
+ ret = bt_ctf_attributes_get_field_value_by_name(event_class->attributes,
+ name);
+
+end:
+ return ret;
+
+}
+
+struct bt_ctf_stream_class *bt_ctf_event_class_get_stream_class(
+ struct bt_ctf_event_class *event_class)
+{
+ struct bt_ctf_stream_class *stream_class = NULL;
+
+ if (!event_class) {
+ goto end;
+ }
+
+ stream_class = event_class->stream_class;
+ bt_ctf_stream_class_get(stream_class);
+end:
+ return stream_class;
+}
+
+struct bt_ctf_field_type *bt_ctf_event_class_get_payload_type(
+ struct bt_ctf_event_class *event_class)
+{
+ struct bt_ctf_field_type *payload = NULL;
+
+ if (!event_class) {
+ goto end;
+ }
+
+ bt_ctf_field_type_get(event_class->fields);
+ payload = event_class->fields;
+end:
+ return payload;
+}
+
+int bt_ctf_event_class_set_payload_type(struct bt_ctf_event_class *event_class,
+ struct bt_ctf_field_type *payload)
+{
+ int ret = 0;
+
+ if (!event_class || !payload ||
+ bt_ctf_field_type_get_type_id(payload) != CTF_TYPE_STRUCT) {
+ ret = -1;
+ goto end;
+ }
+
+ bt_ctf_field_type_get(payload);
+ bt_ctf_field_type_put(event_class->fields);
+ event_class->fields = payload;
+end:
+ return ret;
+}
+
+int bt_ctf_event_class_add_field(struct bt_ctf_event_class *event_class,
+ struct bt_ctf_field_type *type,
+ const char *name)
+{
+ int ret = 0;
+
+ if (!event_class || !type || bt_ctf_validate_identifier(name) ||
+ event_class->frozen) {
+ ret = -1;
+ goto end;
+ }
+
+ if (bt_ctf_field_type_get_type_id(event_class->fields) !=
+ CTF_TYPE_STRUCT) {
+ ret = -1;
+ goto end;
+ }
+
+ ret = bt_ctf_field_type_structure_add_field(event_class->fields,
+ type, name);
+end:
+ return ret;
+}
+
+int bt_ctf_event_class_get_field_count(
+ struct bt_ctf_event_class *event_class)
+{
+ int ret;
+
+ if (!event_class) {
+ ret = -1;
+ goto end;
+ }
+
+ if (bt_ctf_field_type_get_type_id(event_class->fields) !=
+ CTF_TYPE_STRUCT) {
+ ret = -1;
+ goto end;
+ }
+
+ ret = bt_ctf_field_type_structure_get_field_count(event_class->fields);
+end:
+ return ret;
+}
+
+int bt_ctf_event_class_get_field(struct bt_ctf_event_class *event_class,
+ const char **field_name, struct bt_ctf_field_type **field_type,
+ int index)
+{
+ int ret;
+
+ if (!event_class || index < 0) {
+ ret = -1;
+ goto end;
+ }
+
+ if (bt_ctf_field_type_get_type_id(event_class->fields) !=
+ CTF_TYPE_STRUCT) {
+ ret = -1;
+ goto end;
+ }
+
+ ret = bt_ctf_field_type_structure_get_field(event_class->fields,
+ field_name, field_type, index);
+end:
+ return ret;
+}
+
+struct bt_ctf_field_type *bt_ctf_event_class_get_field_by_name(
+ struct bt_ctf_event_class *event_class, const char *name)
+{
+ GQuark name_quark;
+ struct bt_ctf_field_type *field_type = NULL;
+
+ if (!event_class || !name) {
+ goto end;
+ }
+
+ if (bt_ctf_field_type_get_type_id(event_class->fields) !=
+ CTF_TYPE_STRUCT) {
+ goto end;
+ }
+
+ name_quark = g_quark_try_string(name);
+ if (!name_quark) {
+ goto end;
+ }
+
+ /*
+ * No need to increment field_type's reference count since getting it
+ * from the structure already does.
+ */
+ field_type = bt_ctf_field_type_structure_get_field_type_by_name(
+ event_class->fields, name);
+end:
+ 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) {
+ return;
+ }
+
+ bt_ctf_ref_get(&event_class->ref_count);
+}
+
+void bt_ctf_event_class_put(struct bt_ctf_event_class *event_class)
+{
+ if (!event_class) {
+ return;
+ }
+
+ bt_ctf_ref_put(&event_class->ref_count, bt_ctf_event_class_destroy);
+}
+
+BT_HIDDEN
+int bt_ctf_event_class_set_stream_id(struct bt_ctf_event_class *event_class,
+ uint32_t stream_id)
+{
+ int ret = 0;
+ struct bt_object *obj;
+
+ obj = bt_object_integer_create_init(stream_id);
+
+ if (!obj) {
+ ret = -1;
+ goto end;
+ }
+
+ ret = bt_ctf_attributes_set_field_value(event_class->attributes,
+ "stream_id", obj);
+
+end:
+ BT_OBJECT_PUT(obj);
+
+ return ret;
+}
+
+struct bt_ctf_event *bt_ctf_event_create(struct bt_ctf_event_class *event_class)
+{
+ struct bt_ctf_event *event = NULL;
+
+ if (!event_class) {
+ goto end;
+ }
+
+ /*
+ * The event class does not keep ownership of the stream class to
+ * which it as been added. Therefore, it can't assume it has been
+ * set. However, we disallow the creation of an event if its
+ * associated stream class has been reclaimed.
+ */
+ if (!event_class->stream_class) {
+ goto end;
+ }
+ assert(event_class->stream_class->event_header_type);
+ event = g_new0(struct bt_ctf_event, 1);
+ if (!event) {
+ goto end;
+ }
+
+ bt_ctf_ref_init(&event->ref_count);
+ bt_ctf_event_class_get(event_class);
+ bt_ctf_event_class_freeze(event_class);
+ event->event_class = event_class;
+
+ event->event_header = bt_ctf_field_create(
+ event_class->stream_class->event_header_type);
+ if (!event->event_header) {
+ goto error_destroy;
+ }
+ if (event_class->context) {
+ event->context_payload = bt_ctf_field_create(
+ event_class->context);
+ if (!event->context_payload) {
+ goto error_destroy;
+ }
+ }
+ event->fields_payload = bt_ctf_field_create(event_class->fields);
+ if (!event->fields_payload) {
+ goto error_destroy;
+ }
+
+ /*
+ * Freeze the stream class since the event header must not be changed
+ * anymore.
+ */
+ bt_ctf_stream_class_freeze(event_class->stream_class);
+end:
+ return event;
+error_destroy:
+ if (event) {
+ bt_ctf_event_destroy(&event->ref_count);
+ }
+
+ return NULL;
+}
+
+struct bt_ctf_event_class *bt_ctf_event_get_class(struct bt_ctf_event *event)
+{
+ struct bt_ctf_event_class *event_class = NULL;
+
+ if (!event) {
+ goto end;
+ }
+
+ event_class = event->event_class;
+ bt_ctf_event_class_get(event_class);
+end:
+ return event_class;
+}
+
+struct bt_ctf_stream *bt_ctf_event_get_stream(struct bt_ctf_event *event)
+{
+ struct bt_ctf_stream *stream = NULL;
+
+ if (!event) {
+ goto end;
+ }
+
+ stream = event->stream;
+ if (stream) {
+ bt_ctf_stream_get(stream);
+ }
+end:
+ return stream;
+}
+
+struct bt_ctf_clock *bt_ctf_event_get_clock(struct bt_ctf_event *event)
+{
+ struct bt_ctf_clock *clock = NULL;
+ struct bt_ctf_event_class *event_class;
+ struct bt_ctf_stream_class *stream_class;
+
+ if (!event) {
+ goto end;
+ }
+
+ event_class = bt_ctf_event_get_class(event);
+ if (!event_class) {
+ goto end;
+ }
+
+ stream_class = bt_ctf_event_class_get_stream_class(event_class);
+ if (!stream_class) {
+ goto error_put_event_class;
+ }
+
+ clock = bt_ctf_stream_class_get_clock(stream_class);
+ if (!clock) {
+ goto error_put_stream_class;
+ }
+
+error_put_stream_class:
+ bt_ctf_stream_class_put(stream_class);
+error_put_event_class:
+ bt_ctf_event_class_put(event_class);
+end:
+ return clock;
+}
+
+int bt_ctf_event_set_payload(struct bt_ctf_event *event,
+ const char *name,
+ struct bt_ctf_field *payload)
+{
+ int ret = 0;
+
+ if (!event || !payload) {
+ ret = -1;