+static inline
+struct lttng_ust_type_integer *lttng_ust_get_type_integer(struct lttng_ust_type_common *type)
+{
+ if (type->type != lttng_ust_type_integer)
+ return NULL;
+ return caa_container_of(type, struct lttng_ust_type_integer, parent);
+}
+
+static inline
+struct lttng_ust_type_float *lttng_ust_get_type_float(struct lttng_ust_type_common *type)
+{
+ if (type->type != lttng_ust_type_float)
+ return NULL;
+ return caa_container_of(type, struct lttng_ust_type_float, parent);
+}
+
+static inline
+struct lttng_ust_type_string *lttng_ust_get_type_string(struct lttng_ust_type_common *type)
+{
+ if (type->type != lttng_ust_type_string)
+ return NULL;
+ return caa_container_of(type, struct lttng_ust_type_string, parent);
+}
+
+static inline
+struct lttng_ust_type_enum *lttng_ust_get_type_enum(struct lttng_ust_type_common *type)
+{
+ if (type->type != lttng_ust_type_enum)
+ return NULL;
+ return caa_container_of(type, struct lttng_ust_type_enum, parent);
+}
+
+static inline
+struct lttng_ust_type_array *lttng_ust_get_type_array(struct lttng_ust_type_common *type)
+{
+ if (type->type != lttng_ust_type_array)
+ return NULL;
+ return caa_container_of(type, struct lttng_ust_type_array, parent);
+}
+
+static inline
+struct lttng_ust_type_sequence *lttng_ust_get_type_sequence(struct lttng_ust_type_common *type)
+{
+ if (type->type != lttng_ust_type_sequence)
+ return NULL;
+ return caa_container_of(type, struct lttng_ust_type_sequence, parent);
+}
+
+static inline
+struct lttng_ust_type_struct *lttng_ust_get_type_struct(struct lttng_ust_type_common *type)
+{
+ if (type->type != lttng_ust_type_struct)
+ return NULL;
+ return caa_container_of(type, struct lttng_ust_type_struct, parent);
+}
+
+/* Create dynamically allocated types. */
+static inline
+struct lttng_ust_type_common *lttng_ust_create_type_integer(unsigned int size,
+ unsigned short alignment, bool signedness, unsigned int byte_order,
+ unsigned int base)
+{
+ struct lttng_ust_type_integer *integer_type;
+
+ integer_type = zmalloc(sizeof(struct lttng_ust_type_integer));
+ if (!integer_type)
+ return NULL;
+ integer_type->parent.type = lttng_ust_type_integer;
+ integer_type->struct_size = sizeof(struct lttng_ust_type_integer);
+ integer_type->size = size;
+ integer_type->alignment = alignment;
+ integer_type->signedness = signedness;
+ integer_type->reverse_byte_order = byte_order != BYTE_ORDER;
+ integer_type->base = base;
+ return (struct lttng_ust_type_common *) integer_type;
+}
+
+static inline
+struct lttng_ust_type_common *lttng_ust_create_type_array_text(unsigned int length)
+{
+ struct lttng_ust_type_array *array_type;
+
+ array_type = zmalloc(sizeof(struct lttng_ust_type_array));
+ if (!array_type)
+ return NULL;
+ array_type->parent.type = lttng_ust_type_array;
+ array_type->struct_size = sizeof(struct lttng_ust_type_array);
+ array_type->length = length;
+ array_type->alignment = 0;
+ array_type->encoding = lttng_ust_string_encoding_UTF8;
+ array_type->elem_type = lttng_ust_create_type_integer(sizeof(char) * CHAR_BIT,
+ lttng_alignof(char) * CHAR_BIT, lttng_is_signed_type(char),
+ BYTE_ORDER, 10);
+ if (!array_type->elem_type)
+ goto error_elem;
+ return (struct lttng_ust_type_common *) array_type;
+
+error_elem:
+ free(array_type);
+ return NULL;
+}
+
+/*
+ * Destroy dynamically allocated types, including nested types.
+ * For enumerations, it does not free the enumeration mapping description.
+ */
+static inline
+void lttng_ust_destroy_type(struct lttng_ust_type_common *type)
+{
+ if (!type)
+ return;
+
+ switch (type->type) {
+ case lttng_ust_type_integer:
+ case lttng_ust_type_string:
+ case lttng_ust_type_float:
+ case lttng_ust_type_dynamic:
+ free(type);
+ break;
+ case lttng_ust_type_enum:
+ {
+ struct lttng_ust_type_enum *enum_type = (struct lttng_ust_type_enum *) type;
+
+ lttng_ust_destroy_type(enum_type->container_type);
+ break;
+ }
+ case lttng_ust_type_array:
+ {
+ struct lttng_ust_type_array *array_type = (struct lttng_ust_type_array *) type;
+
+ lttng_ust_destroy_type(array_type->elem_type);
+ break;
+ }
+ case lttng_ust_type_sequence:
+ {
+ struct lttng_ust_type_sequence *sequence_type = (struct lttng_ust_type_sequence *) type;
+
+ lttng_ust_destroy_type(sequence_type->elem_type);
+ break;
+ }
+ case lttng_ust_type_struct:
+ {
+ struct lttng_ust_type_struct *struct_type = (struct lttng_ust_type_struct *) type;
+ unsigned int i;
+
+ for (i = 0; i < struct_type->nr_fields; i++)
+ lttng_ust_destroy_type(struct_type->fields[i]->type);
+ break;
+ }
+ default:
+ abort();
+ }
+}
+