+
+LTTNG_HIDDEN
+struct lttng_trigger *lttng_trigger_copy(const struct lttng_trigger *trigger)
+{
+ int ret;
+ struct lttng_payload copy_buffer;
+ struct lttng_trigger *copy = NULL;
+
+ lttng_payload_init(©_buffer);
+
+ ret = lttng_trigger_serialize(trigger, ©_buffer);
+ if (ret < 0) {
+ goto end;
+ }
+
+ {
+ struct lttng_payload_view view =
+ lttng_payload_view_from_payload(
+ ©_buffer, 0, -1);
+ ret = lttng_trigger_create_from_payload(
+ &view, ©);
+ if (ret < 0) {
+ copy = NULL;
+ goto end;
+ }
+ }
+
+end:
+ lttng_payload_reset(©_buffer);
+ return copy;
+}
+
+LTTNG_HIDDEN
+bool lttng_trigger_needs_tracer_notifier(const struct lttng_trigger *trigger)
+{
+ bool needs_tracer_notifier = false;
+ const struct lttng_condition *condition =
+ lttng_trigger_get_const_condition(trigger);
+
+ switch (lttng_condition_get_type(condition)) {
+ case LTTNG_CONDITION_TYPE_ON_EVENT:
+ needs_tracer_notifier = true;
+ goto end;
+ case LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE:
+ case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
+ case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
+ case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING:
+ case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED:
+ goto end;
+ case LTTNG_CONDITION_TYPE_UNKNOWN:
+ default:
+ abort();
+ }
+end:
+ return needs_tracer_notifier;
+}