+
+ return true;
+}
+
+static void delete_trigger_array_element(void *ptr)
+{
+ struct lttng_trigger *trigger = ptr;
+ lttng_trigger_destroy(trigger);
+}
+
+LTTNG_HIDDEN
+struct lttng_triggers *lttng_triggers_create(void)
+{
+ struct lttng_triggers *triggers = NULL;
+
+ triggers = zmalloc(sizeof(*triggers));
+ if (!triggers) {
+ goto error;
+ }
+
+ lttng_dynamic_pointer_array_init(&triggers->array, delete_trigger_array_element);
+
+ return triggers;
+error:
+ free(triggers);
+ return NULL;
+}
+
+LTTNG_HIDDEN
+struct lttng_trigger *lttng_triggers_get_pointer_of_index(
+ const struct lttng_triggers *triggers, unsigned int index)
+{
+ assert(triggers);
+ if (index >= lttng_dynamic_pointer_array_get_count(&triggers->array)) {
+ return NULL;
+ }
+ return lttng_dynamic_pointer_array_get_pointer(&triggers->array, index);
+}
+
+LTTNG_HIDDEN
+int lttng_triggers_add(
+ struct lttng_triggers *triggers, struct lttng_trigger *trigger)
+{
+ assert(triggers);
+ assert(trigger);
+
+ return lttng_dynamic_pointer_array_add_pointer(&triggers->array, trigger);
+}
+
+const struct lttng_trigger *lttng_triggers_get_at_index(
+ const struct lttng_triggers *triggers, unsigned int index)
+{
+ assert(triggers);
+ return lttng_triggers_get_pointer_of_index(triggers, index);
+}
+
+enum lttng_trigger_status lttng_triggers_get_count(const struct lttng_triggers *triggers, unsigned int *count)
+{
+ enum lttng_trigger_status status = LTTNG_TRIGGER_STATUS_OK;
+
+ if (!triggers || !count) {
+ status = LTTNG_TRIGGER_STATUS_INVALID;
+ goto end;
+ }
+
+ *count = lttng_dynamic_pointer_array_get_count(&triggers->array);
+end:
+ return status;
+}
+
+void lttng_triggers_destroy(struct lttng_triggers *triggers)
+{
+ if (!triggers) {
+ return;
+ }
+
+ lttng_dynamic_pointer_array_reset(&triggers->array);
+ free(triggers);
+}
+
+int lttng_triggers_serialize(const struct lttng_triggers *triggers,
+ struct lttng_dynamic_buffer *buffer)
+{
+ int ret;
+ unsigned int count;
+ size_t header_offset, size_before_payload;
+ struct lttng_triggers_comm triggers_comm = { 0 };
+ struct lttng_triggers_comm *header;
+ struct lttng_trigger *trigger;
+ enum lttng_trigger_status status;
+
+ header_offset = buffer->size;
+
+ status = lttng_triggers_get_count(triggers, &count);
+ if (status != LTTNG_TRIGGER_STATUS_OK) {
+ ret = LTTNG_ERR_INVALID;
+ goto end;
+ }
+
+ triggers_comm.count = count;
+
+ ret = lttng_dynamic_buffer_append(buffer, &triggers_comm,
+ sizeof(triggers_comm));
+ if (ret) {
+ goto end;
+ }
+
+ size_before_payload = buffer->size;
+
+ for (int i = 0; i < count; i++) {
+ trigger = lttng_triggers_get_pointer_of_index(triggers, i);
+ if (!trigger) {
+ assert(0);
+ }
+
+ ret = lttng_trigger_serialize(trigger, buffer, NULL);
+ if (ret) {
+ goto end;
+ }
+ }
+
+ /* Update payload size. */
+ header = (struct lttng_triggers_comm *) ((char *) buffer->data + header_offset);
+ header->length = buffer->size - size_before_payload;
+end:
+ return ret;
+}
+
+LTTNG_HIDDEN
+ssize_t lttng_triggers_create_from_buffer(
+ const struct lttng_buffer_view *src_view,
+ struct lttng_triggers **triggers)
+{
+ ssize_t ret, offset = 0, trigger_size, triggers_size = 0;
+ const struct lttng_triggers_comm *triggers_comm;
+ struct lttng_buffer_view trigger_view;
+ struct lttng_triggers *local_triggers = NULL;
+
+ if (!src_view || !triggers) {
+ ret = -1;
+ goto error;
+ }
+
+ /* lttng_trigger_comms header */
+ triggers_comm = (const struct lttng_triggers_comm *) src_view->data;
+ offset += sizeof(*triggers_comm);
+
+ local_triggers = lttng_triggers_create();
+ if (!local_triggers) {
+ ret = -1;
+ goto error;
+ }
+
+ for (int i = 0; i < triggers_comm->count; i++) {
+ struct lttng_trigger *trigger = NULL;
+ trigger_view = lttng_buffer_view_from_view(src_view, offset, -1);
+ trigger_size = lttng_trigger_create_from_buffer(&trigger_view,
+ &trigger);
+ if (trigger_size < 0) {
+ ret = trigger_size;
+ goto error;
+ }
+
+ /* Pass ownership of the trigger to the collection */
+ ret = lttng_triggers_add(local_triggers, trigger);
+ if (ret < 0) {
+ assert(0);
+ }
+ trigger = NULL;
+
+ offset += trigger_size;
+ triggers_size += trigger_size;
+ }
+
+ /* Unexpected size of inner-elements; the buffer is corrupted. */
+ if ((ssize_t) triggers_comm->length != triggers_size) {
+ ret = -1;
+ goto error;
+ }
+
+ /* Pass ownership to caller */
+ *triggers = local_triggers;
+ local_triggers = NULL;
+