--- /dev/null
+/*
+ * fields.c
+ *
+ * Babeltrace CTF IR - Event Fields
+ *
+ * Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <babeltrace/ctf-ir/fields-internal.h>
+#include <babeltrace/ctf-ir/field-types-internal.h>
+#include <babeltrace/object-internal.h>
+#include <babeltrace/ref.h>
+#include <babeltrace/compiler.h>
+#include <babeltrace/compat/fcntl.h>
+
+#define PACKET_LEN_INCREMENT (getpagesize() * 8 * CHAR_BIT)
+
+static
+struct bt_ctf_field *bt_ctf_field_integer_create(struct bt_ctf_field_type *);
+static
+struct bt_ctf_field *bt_ctf_field_enumeration_create(
+ struct bt_ctf_field_type *);
+static
+struct bt_ctf_field *bt_ctf_field_floating_point_create(
+ struct bt_ctf_field_type *);
+static
+struct bt_ctf_field *bt_ctf_field_structure_create(
+ struct bt_ctf_field_type *);
+static
+struct bt_ctf_field *bt_ctf_field_variant_create(
+ struct bt_ctf_field_type *);
+static
+struct bt_ctf_field *bt_ctf_field_array_create(
+ struct bt_ctf_field_type *);
+static
+struct bt_ctf_field *bt_ctf_field_sequence_create(
+ struct bt_ctf_field_type *);
+static
+struct bt_ctf_field *bt_ctf_field_string_create(struct bt_ctf_field_type *);
+
+static
+void bt_ctf_field_destroy(struct bt_object *);
+static
+void bt_ctf_field_integer_destroy(struct bt_ctf_field *);
+static
+void bt_ctf_field_enumeration_destroy(struct bt_ctf_field *);
+static
+void bt_ctf_field_floating_point_destroy(struct bt_ctf_field *);
+static
+void bt_ctf_field_structure_destroy(struct bt_ctf_field *);
+static
+void bt_ctf_field_variant_destroy(struct bt_ctf_field *);
+static
+void bt_ctf_field_array_destroy(struct bt_ctf_field *);
+static
+void bt_ctf_field_sequence_destroy(struct bt_ctf_field *);
+static
+void bt_ctf_field_string_destroy(struct bt_ctf_field *);
+
+static
+int bt_ctf_field_generic_validate(struct bt_ctf_field *);
+static
+int bt_ctf_field_structure_validate(struct bt_ctf_field *);
+static
+int bt_ctf_field_variant_validate(struct bt_ctf_field *);
+static
+int bt_ctf_field_enumeration_validate(struct bt_ctf_field *);
+static
+int bt_ctf_field_array_validate(struct bt_ctf_field *);
+static
+int bt_ctf_field_sequence_validate(struct bt_ctf_field *);
+
+static
+int bt_ctf_field_generic_reset(struct bt_ctf_field *);
+static
+int bt_ctf_field_structure_reset(struct bt_ctf_field *);
+static
+int bt_ctf_field_variant_reset(struct bt_ctf_field *);
+static
+int bt_ctf_field_enumeration_reset(struct bt_ctf_field *);
+static
+int bt_ctf_field_array_reset(struct bt_ctf_field *);
+static
+int bt_ctf_field_sequence_reset(struct bt_ctf_field *);
+static
+int bt_ctf_field_string_reset(struct bt_ctf_field *);
+
+static
+int bt_ctf_field_integer_serialize(struct bt_ctf_field *,
+ struct ctf_stream_pos *);
+static
+int bt_ctf_field_enumeration_serialize(struct bt_ctf_field *,
+ struct ctf_stream_pos *);
+static
+int bt_ctf_field_floating_point_serialize(struct bt_ctf_field *,
+ struct ctf_stream_pos *);
+static
+int bt_ctf_field_structure_serialize(struct bt_ctf_field *,
+ struct ctf_stream_pos *);
+static
+int bt_ctf_field_variant_serialize(struct bt_ctf_field *,
+ struct ctf_stream_pos *);
+static
+int bt_ctf_field_array_serialize(struct bt_ctf_field *,
+ struct ctf_stream_pos *);
+static
+int bt_ctf_field_sequence_serialize(struct bt_ctf_field *,
+ struct ctf_stream_pos *);
+static
+int bt_ctf_field_string_serialize(struct bt_ctf_field *,
+ struct ctf_stream_pos *);
+
+static
+int bt_ctf_field_integer_copy(struct bt_ctf_field *, struct bt_ctf_field *);
+static
+int bt_ctf_field_enumeration_copy(struct bt_ctf_field *, struct bt_ctf_field *);
+static
+int bt_ctf_field_floating_point_copy(struct bt_ctf_field *,
+ struct bt_ctf_field *);
+static
+int bt_ctf_field_structure_copy(struct bt_ctf_field *, struct bt_ctf_field *);
+static
+int bt_ctf_field_variant_copy(struct bt_ctf_field *, struct bt_ctf_field *);
+static
+int bt_ctf_field_array_copy(struct bt_ctf_field *, struct bt_ctf_field *);
+static
+int bt_ctf_field_sequence_copy(struct bt_ctf_field *, struct bt_ctf_field *);
+static
+int bt_ctf_field_string_copy(struct bt_ctf_field *, struct bt_ctf_field *);
+
+static
+int increase_packet_size(struct ctf_stream_pos *pos);
+
+static
+struct bt_ctf_field *(* const field_create_funcs[])(
+ struct bt_ctf_field_type *) = {
+ [BT_CTF_TYPE_ID_INTEGER] = bt_ctf_field_integer_create,
+ [BT_CTF_TYPE_ID_ENUM] = bt_ctf_field_enumeration_create,
+ [BT_CTF_TYPE_ID_FLOAT] =
+ bt_ctf_field_floating_point_create,
+ [BT_CTF_TYPE_ID_STRUCT] = bt_ctf_field_structure_create,
+ [BT_CTF_TYPE_ID_VARIANT] = bt_ctf_field_variant_create,
+ [BT_CTF_TYPE_ID_ARRAY] = bt_ctf_field_array_create,
+ [BT_CTF_TYPE_ID_SEQUENCE] = bt_ctf_field_sequence_create,
+ [BT_CTF_TYPE_ID_STRING] = bt_ctf_field_string_create,
+};
+
+static
+void (* const field_destroy_funcs[])(struct bt_ctf_field *) = {
+ [BT_CTF_TYPE_ID_INTEGER] = bt_ctf_field_integer_destroy,
+ [BT_CTF_TYPE_ID_ENUM] = bt_ctf_field_enumeration_destroy,
+ [BT_CTF_TYPE_ID_FLOAT] =
+ bt_ctf_field_floating_point_destroy,
+ [BT_CTF_TYPE_ID_STRUCT] = bt_ctf_field_structure_destroy,
+ [BT_CTF_TYPE_ID_VARIANT] = bt_ctf_field_variant_destroy,
+ [BT_CTF_TYPE_ID_ARRAY] = bt_ctf_field_array_destroy,
+ [BT_CTF_TYPE_ID_SEQUENCE] = bt_ctf_field_sequence_destroy,
+ [BT_CTF_TYPE_ID_STRING] = bt_ctf_field_string_destroy,
+};
+
+static
+int (* const field_validate_funcs[])(struct bt_ctf_field *) = {
+ [BT_CTF_TYPE_ID_INTEGER] = bt_ctf_field_generic_validate,
+ [BT_CTF_TYPE_ID_ENUM] = bt_ctf_field_enumeration_validate,
+ [BT_CTF_TYPE_ID_FLOAT] = bt_ctf_field_generic_validate,
+ [BT_CTF_TYPE_ID_STRUCT] = bt_ctf_field_structure_validate,
+ [BT_CTF_TYPE_ID_VARIANT] = bt_ctf_field_variant_validate,
+ [BT_CTF_TYPE_ID_ARRAY] = bt_ctf_field_array_validate,
+ [BT_CTF_TYPE_ID_SEQUENCE] = bt_ctf_field_sequence_validate,
+ [BT_CTF_TYPE_ID_STRING] = bt_ctf_field_generic_validate,
+};
+
+static
+int (* const field_reset_funcs[])(struct bt_ctf_field *) = {
+ [BT_CTF_TYPE_ID_INTEGER] = bt_ctf_field_generic_reset,
+ [BT_CTF_TYPE_ID_ENUM] = bt_ctf_field_enumeration_reset,
+ [BT_CTF_TYPE_ID_FLOAT] = bt_ctf_field_generic_reset,
+ [BT_CTF_TYPE_ID_STRUCT] = bt_ctf_field_structure_reset,
+ [BT_CTF_TYPE_ID_VARIANT] = bt_ctf_field_variant_reset,
+ [BT_CTF_TYPE_ID_ARRAY] = bt_ctf_field_array_reset,
+ [BT_CTF_TYPE_ID_SEQUENCE] = bt_ctf_field_sequence_reset,
+ [BT_CTF_TYPE_ID_STRING] = bt_ctf_field_string_reset,
+};
+
+static
+int (* const field_serialize_funcs[])(struct bt_ctf_field *,
+ struct ctf_stream_pos *) = {
+ [BT_CTF_TYPE_ID_INTEGER] = bt_ctf_field_integer_serialize,
+ [BT_CTF_TYPE_ID_ENUM] = bt_ctf_field_enumeration_serialize,
+ [BT_CTF_TYPE_ID_FLOAT] =
+ bt_ctf_field_floating_point_serialize,
+ [BT_CTF_TYPE_ID_STRUCT] = bt_ctf_field_structure_serialize,
+ [BT_CTF_TYPE_ID_VARIANT] = bt_ctf_field_variant_serialize,
+ [BT_CTF_TYPE_ID_ARRAY] = bt_ctf_field_array_serialize,
+ [BT_CTF_TYPE_ID_SEQUENCE] = bt_ctf_field_sequence_serialize,
+ [BT_CTF_TYPE_ID_STRING] = bt_ctf_field_string_serialize,
+};
+
+static
+int (* const field_copy_funcs[])(struct bt_ctf_field *,
+ struct bt_ctf_field *) = {
+ [BT_CTF_TYPE_ID_INTEGER] = bt_ctf_field_integer_copy,
+ [BT_CTF_TYPE_ID_ENUM] = bt_ctf_field_enumeration_copy,
+ [BT_CTF_TYPE_ID_FLOAT] = bt_ctf_field_floating_point_copy,
+ [BT_CTF_TYPE_ID_STRUCT] = bt_ctf_field_structure_copy,
+ [BT_CTF_TYPE_ID_VARIANT] = bt_ctf_field_variant_copy,
+ [BT_CTF_TYPE_ID_ARRAY] = bt_ctf_field_array_copy,
+ [BT_CTF_TYPE_ID_SEQUENCE] = bt_ctf_field_sequence_copy,
+ [BT_CTF_TYPE_ID_STRING] = bt_ctf_field_string_copy,
+};
+
+struct bt_ctf_field *bt_ctf_field_create(struct bt_ctf_field_type *type)
+{
+ struct bt_ctf_field *field = NULL;
+ enum bt_ctf_type_id type_id;
+ int ret;
+
+ if (!type) {
+ goto error;
+ }
+
+ type_id = bt_ctf_field_type_get_type_id(type);
+ if (type_id <= BT_CTF_TYPE_ID_UNKNOWN ||
+ type_id >= BT_CTF_NR_TYPE_IDS) {
+ goto error;
+ }
+
+ /* Field class MUST be valid */
+ ret = bt_ctf_field_type_validate(type);
+
+ if (ret) {
+ /* Invalid */
+ goto error;
+ }
+
+ field = field_create_funcs[type_id](type);
+ if (!field) {
+ goto error;
+ }
+
+ /* The type's declaration can't change after this point */
+ bt_ctf_field_type_freeze(type);
+ bt_get(type);
+ bt_object_init(field, bt_ctf_field_destroy);
+ field->type = type;
+error:
+ return field;
+}
+
+void bt_ctf_field_get(struct bt_ctf_field *field)
+{
+ bt_get(field);
+}
+
+void bt_ctf_field_put(struct bt_ctf_field *field)
+{
+ bt_put(field);
+}
+
+struct bt_ctf_field_type *bt_ctf_field_get_type(struct bt_ctf_field *field)
+{
+ struct bt_ctf_field_type *ret = NULL;
+
+ if (!field) {
+ goto end;
+ }
+
+ ret = field->type;
+ bt_get(ret);
+end:
+ return ret;
+}
+
+enum bt_ctf_type_id bt_ctf_field_get_type_id(struct bt_ctf_field *field)
+{
+ enum bt_ctf_type_id ret = BT_CTF_TYPE_ID_UNKNOWN;
+
+ if (!field) {
+ goto end;
+ }
+
+ ret = bt_ctf_field_type_get_type_id(field->type);
+end:
+ return ret;
+}
+
+int bt_ctf_field_is_integer(struct bt_ctf_field *field)
+{
+ return bt_ctf_field_get_type_id(field) == BT_CTF_TYPE_ID_INTEGER;
+}
+
+int bt_ctf_field_is_floating_point(struct bt_ctf_field *field)
+{
+ return bt_ctf_field_get_type_id(field) == BT_CTF_TYPE_ID_FLOAT;
+}
+
+int bt_ctf_field_is_enumeration(struct bt_ctf_field *field)
+{
+ return bt_ctf_field_get_type_id(field) == BT_CTF_TYPE_ID_ENUM;
+}
+
+int bt_ctf_field_is_string(struct bt_ctf_field *field)
+{
+ return bt_ctf_field_get_type_id(field) == BT_CTF_TYPE_ID_STRING;
+}
+
+int bt_ctf_field_is_structure(struct bt_ctf_field *field)
+{
+ return bt_ctf_field_get_type_id(field) == BT_CTF_TYPE_ID_STRUCT;
+}
+
+int bt_ctf_field_is_array(struct bt_ctf_field *field)
+{
+ return bt_ctf_field_get_type_id(field) == BT_CTF_TYPE_ID_ARRAY;
+}
+
+int bt_ctf_field_is_sequence(struct bt_ctf_field *field)
+{
+ return bt_ctf_field_get_type_id(field) == BT_CTF_TYPE_ID_SEQUENCE;
+}
+
+int bt_ctf_field_is_variant(struct bt_ctf_field *field)
+{
+ return bt_ctf_field_get_type_id(field) == BT_CTF_TYPE_ID_VARIANT;
+}
+
+struct bt_ctf_field *bt_ctf_field_sequence_get_length(
+ struct bt_ctf_field *field)
+{
+ struct bt_ctf_field *ret = NULL;
+ struct bt_ctf_field_sequence *sequence;
+
+ if (!field) {
+ goto end;
+ }
+
+ if (bt_ctf_field_type_get_type_id(field->type) !=
+ BT_CTF_TYPE_ID_SEQUENCE) {
+ goto end;
+ }
+
+ sequence = container_of(field, struct bt_ctf_field_sequence, parent);
+ ret = sequence->length;
+ bt_get(ret);
+end:
+ return ret;
+}
+
+int bt_ctf_field_sequence_set_length(struct bt_ctf_field *field,
+ struct bt_ctf_field *length_field)
+{
+ int ret = 0;
+ struct bt_ctf_field_type_integer *length_type;
+ struct bt_ctf_field_integer *length;
+ struct bt_ctf_field_sequence *sequence;
+ uint64_t sequence_length;
+
+ if (!field || !length_field) {
+ ret = -1;
+ goto end;
+ }
+ if (bt_ctf_field_type_get_type_id(length_field->type) !=
+ BT_CTF_TYPE_ID_INTEGER) {
+ ret = -1;
+ goto end;
+ }
+
+ length_type = container_of(length_field->type,
+ struct bt_ctf_field_type_integer, parent);
+ /* The length field must be unsigned */
+ if (length_type->declaration.signedness) {
+ ret = -1;
+ goto end;
+ }
+
+ length = container_of(length_field, struct bt_ctf_field_integer,
+ parent);
+ sequence_length = length->definition.value._unsigned;
+ sequence = container_of(field, struct bt_ctf_field_sequence, parent);
+ if (sequence->elements) {
+ g_ptr_array_free(sequence->elements, TRUE);
+ bt_put(sequence->length);
+ }
+
+ sequence->elements = g_ptr_array_sized_new((size_t)sequence_length);
+ if (!sequence->elements) {
+ ret = -1;
+ goto end;
+ }
+
+ g_ptr_array_set_free_func(sequence->elements,
+ (GDestroyNotify) bt_put);
+ g_ptr_array_set_size(sequence->elements, (size_t) sequence_length);
+ bt_get(length_field);
+ sequence->length = length_field;
+end:
+ return ret;
+}
+
+struct bt_ctf_field *bt_ctf_field_structure_get_field(
+ struct bt_ctf_field *field, const char *name)
+{
+ struct bt_ctf_field *new_field = NULL;
+ GQuark field_quark;
+ struct bt_ctf_field_structure *structure;
+ struct bt_ctf_field_type *field_type = NULL;
+ size_t index;
+
+ if (!field || !name ||
+ bt_ctf_field_type_get_type_id(field->type) !=
+ BT_CTF_TYPE_ID_STRUCT) {
+ goto error;
+ }
+
+ field_quark = g_quark_from_string(name);
+ structure = container_of(field, struct bt_ctf_field_structure, parent);
+ field_type =
+ bt_ctf_field_type_structure_get_field_type_by_name(field->type,
+ name);
+ if (!g_hash_table_lookup_extended(structure->field_name_to_index,
+ GUINT_TO_POINTER(field_quark), NULL, (gpointer *)&index)) {
+ goto error;
+ }
+
+ if (structure->fields->pdata[index]) {
+ new_field = structure->fields->pdata[index];
+ goto end;
+ }
+
+ new_field = bt_ctf_field_create(field_type);
+ if (!new_field) {
+ goto error;
+ }
+
+ structure->fields->pdata[index] = new_field;
+end:
+ bt_get(new_field);
+error:
+ if (field_type) {
+ bt_put(field_type);
+ }
+ return new_field;
+}
+
+struct bt_ctf_field *bt_ctf_field_structure_get_field_by_index(
+ struct bt_ctf_field *field, int index)
+{
+ int ret;
+ const char *field_name;
+ struct bt_ctf_field_structure *structure;
+ struct bt_ctf_field_type *structure_type;
+ struct bt_ctf_field_type *field_type = NULL;
+ struct bt_ctf_field *ret_field = NULL;
+
+ if (!field ||
+ bt_ctf_field_type_get_type_id(field->type) !=
+ BT_CTF_TYPE_ID_STRUCT) {
+ goto end;
+ }
+
+ structure = container_of(field, struct bt_ctf_field_structure, parent);
+ if (index >= structure->fields->len) {
+ goto error;
+ }
+
+ ret_field = structure->fields->pdata[index];
+ if (ret_field) {
+ goto end;
+ }
+
+ /* Field has not been instanciated yet, create it */
+ structure_type = bt_ctf_field_get_type(field);
+ if (!structure_type) {
+ goto error;
+ }
+
+ ret = bt_ctf_field_type_structure_get_field(structure_type,
+ &field_name, &field_type, index);
+ bt_put(structure_type);
+ if (ret) {
+ goto error;
+ }
+
+ ret_field = bt_ctf_field_create(field_type);
+ if (!ret_field) {
+ goto error;
+ }
+
+ structure->fields->pdata[index] = ret_field;
+end:
+ bt_get(ret_field);
+error:
+ bt_put(field_type);
+ return ret_field;
+}
+
+BT_HIDDEN
+int bt_ctf_field_structure_set_field(struct bt_ctf_field *field,
+ const char *name, struct bt_ctf_field *value)
+{
+ int ret = 0;
+ GQuark field_quark;
+ struct bt_ctf_field_structure *structure;
+ struct bt_ctf_field_type *expected_field_type = NULL;
+ size_t index;
+
+ if (!field || !name || !value ||
+ bt_ctf_field_type_get_type_id(field->type) !=
+ BT_CTF_TYPE_ID_STRUCT) {
+ ret = -1;
+ goto end;
+ }
+
+ field_quark = g_quark_from_string(name);
+ structure = container_of(field, struct bt_ctf_field_structure, parent);
+ expected_field_type =
+ bt_ctf_field_type_structure_get_field_type_by_name(field->type,
+ name);
+
+ if (bt_ctf_field_type_compare(expected_field_type, value->type)) {
+ ret = -1;
+ goto end;
+ }
+
+ if (!g_hash_table_lookup_extended(structure->field_name_to_index,
+ GUINT_TO_POINTER(field_quark), NULL, (gpointer *) &index)) {
+ goto end;
+ }
+
+ if (structure->fields->pdata[index]) {
+ bt_put(structure->fields->pdata[index]);
+ }
+
+ structure->fields->pdata[index] = value;
+ bt_get(value);
+end:
+ if (expected_field_type) {
+ bt_put(expected_field_type);
+ }
+ return ret;
+}
+
+struct bt_ctf_field *bt_ctf_field_array_get_field(struct bt_ctf_field *field,
+ uint64_t index)
+{
+ struct bt_ctf_field *new_field = NULL;
+ struct bt_ctf_field_type *field_type = NULL;
+ struct bt_ctf_field_array *array;
+
+ if (!field || bt_ctf_field_type_get_type_id(field->type) !=
+ BT_CTF_TYPE_ID_ARRAY) {
+ goto end;
+ }
+
+ array = container_of(field, struct bt_ctf_field_array, parent);
+ if (index >= array->elements->len) {
+ goto end;
+ }
+
+ field_type = bt_ctf_field_type_array_get_element_type(field->type);
+ if (array->elements->pdata[(size_t)index]) {
+ new_field = array->elements->pdata[(size_t)index];
+ goto end;
+ }
+
+ new_field = bt_ctf_field_create(field_type);
+ array->elements->pdata[(size_t)index] = new_field;
+end:
+ if (field_type) {
+ bt_put(field_type);
+ }
+ if (new_field) {
+ bt_get(new_field);
+ }
+ return new_field;
+}
+
+struct bt_ctf_field *bt_ctf_field_sequence_get_field(struct bt_ctf_field *field,
+ uint64_t index)
+{
+ struct bt_ctf_field *new_field = NULL;
+ struct bt_ctf_field_type *field_type = NULL;
+ struct bt_ctf_field_sequence *sequence;
+
+ if (!field || bt_ctf_field_type_get_type_id(field->type) !=
+ BT_CTF_TYPE_ID_SEQUENCE) {
+ goto end;
+ }
+
+ sequence = container_of(field, struct bt_ctf_field_sequence, parent);
+ if (!sequence->elements || sequence->elements->len <= index) {
+ goto end;
+ }
+
+ field_type = bt_ctf_field_type_sequence_get_element_type(field->type);
+ if (sequence->elements->pdata[(size_t) index]) {
+ new_field = sequence->elements->pdata[(size_t) index];
+ goto end;
+ }
+
+ new_field = bt_ctf_field_create(field_type);
+ sequence->elements->pdata[(size_t) index] = new_field;
+end:
+ if (field_type) {
+ bt_put(field_type);
+ }
+ if (new_field) {
+ bt_get(new_field);
+ }
+ return new_field;
+}
+
+struct bt_ctf_field *bt_ctf_field_variant_get_field(struct bt_ctf_field *field,
+ struct bt_ctf_field *tag_field)
+{
+ struct bt_ctf_field *new_field = NULL;
+ struct bt_ctf_field_variant *variant;
+ struct bt_ctf_field_type_variant *variant_type;
+ struct bt_ctf_field_type *field_type;
+ struct bt_ctf_field *tag_enum = NULL;
+ struct bt_ctf_field_integer *tag_enum_integer;
+ int64_t tag_enum_value;
+
+ if (!field || !tag_field ||
+ bt_ctf_field_type_get_type_id(field->type) !=
+ BT_CTF_TYPE_ID_VARIANT ||
+ bt_ctf_field_type_get_type_id(tag_field->type) !=
+ BT_CTF_TYPE_ID_ENUM) {
+ goto end;
+ }
+
+ variant = container_of(field, struct bt_ctf_field_variant, parent);
+ variant_type = container_of(field->type,
+ struct bt_ctf_field_type_variant, parent);
+ tag_enum = bt_ctf_field_enumeration_get_container(tag_field);
+ if (!tag_enum) {
+ goto end;
+ }
+
+ tag_enum_integer = container_of(tag_enum, struct bt_ctf_field_integer,
+ parent);
+
+ if (bt_ctf_field_validate(tag_field) < 0) {
+ goto end;
+ }
+
+ tag_enum_value = tag_enum_integer->definition.value._signed;
+
+ /*
+ * If the variant currently has a tag and a payload, and if the
+ * requested tag value is the same as the current one, return
+ * the current payload instead of creating a fresh one.
+ */
+ if (variant->tag && variant->payload) {
+ struct bt_ctf_field *cur_tag_container = NULL;
+ struct bt_ctf_field_integer *cur_tag_enum_integer;
+ int64_t cur_tag_value;
+
+ cur_tag_container =
+ bt_ctf_field_enumeration_get_container(variant->tag);
+ assert(cur_tag_container);
+ cur_tag_enum_integer = container_of(cur_tag_container,
+ struct bt_ctf_field_integer, parent);
+ bt_put(cur_tag_container);
+ cur_tag_value = cur_tag_enum_integer->definition.value._signed;
+
+ if (cur_tag_value == tag_enum_value) {
+ new_field = variant->payload;
+ bt_get(new_field);
+ goto end;
+ }
+ }
+
+ field_type = bt_ctf_field_type_variant_get_field_type_signed(
+ variant_type, tag_enum_value);
+ if (!field_type) {
+ goto end;
+ }
+
+ new_field = bt_ctf_field_create(field_type);
+ if (!new_field) {
+ goto end;
+ }
+
+ bt_put(variant->tag);
+ bt_put(variant->payload);
+ bt_get(new_field);
+ bt_get(tag_field);
+ variant->tag = tag_field;
+ variant->payload = new_field;
+end:
+ bt_put(tag_enum);
+ return new_field;
+}
+
+struct bt_ctf_field *bt_ctf_field_variant_get_current_field(
+ struct bt_ctf_field *variant_field)
+{
+ struct bt_ctf_field *current_field = NULL;
+ struct bt_ctf_field_variant *variant;
+
+ if (!variant_field ||
+ bt_ctf_field_type_get_type_id(variant_field->type) !=
+ BT_CTF_TYPE_ID_VARIANT) {
+ goto end;
+ }
+
+ variant = container_of(variant_field, struct bt_ctf_field_variant,
+ parent);
+
+ if (variant->payload) {
+ current_field = variant->payload;
+ bt_get(current_field);
+ goto end;
+ }
+
+end:
+ return current_field;
+}
+
+struct bt_ctf_field *bt_ctf_field_enumeration_get_container(
+ struct bt_ctf_field *field)
+{
+ struct bt_ctf_field *container = NULL;
+ struct bt_ctf_field_enumeration *enumeration;
+
+ if (!field || bt_ctf_field_type_get_type_id(field->type) !=
+ BT_CTF_TYPE_ID_ENUM) {
+ goto end;
+ }
+
+ enumeration = container_of(field, struct bt_ctf_field_enumeration,
+ parent);
+ if (!enumeration->payload) {
+ struct bt_ctf_field_type_enumeration *enumeration_type =
+ container_of(field->type,
+ struct bt_ctf_field_type_enumeration, parent);
+ enumeration->payload =
+ bt_ctf_field_create(enumeration_type->container);
+ }
+
+ container = enumeration->payload;
+ bt_get(container);
+end:
+ return container;
+}
+
+const char *bt_ctf_field_enumeration_get_mapping_name(
+ struct bt_ctf_field *field)
+{
+ int ret;
+ const char *name = NULL;
+ struct bt_ctf_field *container = NULL;
+ struct bt_ctf_field_type *container_type = NULL;
+ struct bt_ctf_field_type_integer *integer_type = NULL;
+ struct bt_ctf_field_type_enumeration *enumeration_type = NULL;
+
+ container = bt_ctf_field_enumeration_get_container(field);
+ if (!container) {
+ goto end;
+ }
+
+ container_type = bt_ctf_field_get_type(container);
+ if (!container_type) {
+ goto error_put_container;
+ }
+
+ integer_type = container_of(container_type,
+ struct bt_ctf_field_type_integer, parent);
+ enumeration_type = container_of(field->type,
+ struct bt_ctf_field_type_enumeration, parent);
+
+ if (!integer_type->declaration.signedness) {
+ uint64_t value;
+ ret = bt_ctf_field_unsigned_integer_get_value(container,
+ &value);
+ if (ret) {
+ goto error_put_container_type;
+ }
+
+ name = bt_ctf_field_type_enumeration_get_mapping_name_unsigned(
+ enumeration_type, value);
+ } else {
+ int64_t value;
+ ret = bt_ctf_field_signed_integer_get_value(container,
+ &value);
+ if (ret) {
+ goto error_put_container_type;
+ }
+
+ name = bt_ctf_field_type_enumeration_get_mapping_name_signed(
+ enumeration_type, value);
+ }
+
+error_put_container_type:
+ bt_put(container_type);
+error_put_container:
+ bt_put(container);
+end:
+ return name;
+}
+
+int bt_ctf_field_signed_integer_get_value(struct bt_ctf_field *field,
+ int64_t *value)
+{
+ int ret = 0;
+ struct bt_ctf_field_integer *integer;
+ struct bt_ctf_field_type_integer *integer_type;
+
+ if (!field || !value || !field->payload_set ||
+ bt_ctf_field_type_get_type_id(field->type) !=
+ BT_CTF_TYPE_ID_INTEGER) {
+ ret = -1;
+ goto end;
+ }
+
+ integer_type = container_of(field->type,
+ struct bt_ctf_field_type_integer, parent);
+ if (!integer_type->declaration.signedness) {
+ ret = -1;
+ goto end;
+ }
+
+ integer = container_of(field,
+ struct bt_ctf_field_integer, parent);
+ *value = integer->definition.value._signed;
+end:
+ return ret;
+}
+
+int bt_ctf_field_signed_integer_set_value(struct bt_ctf_field *field,
+ int64_t value)
+{
+ int ret = 0;
+ struct bt_ctf_field_integer *integer;
+ struct bt_ctf_field_type_integer *integer_type;
+ unsigned int size;
+ int64_t min_value, max_value;
+
+ if (!field ||
+ bt_ctf_field_type_get_type_id(field->type) !=
+ BT_CTF_TYPE_ID_INTEGER) {
+ ret = -1;
+ goto end;
+ }
+
+ integer = container_of(field, struct bt_ctf_field_integer, parent);
+ integer_type = container_of(field->type,
+ struct bt_ctf_field_type_integer, parent);
+ if (!integer_type->declaration.signedness) {
+ ret = -1;
+ goto end;
+ }
+
+ size = integer_type->declaration.len;
+ min_value = -((int64_t)1 << (size - 1));
+ max_value = ((int64_t)1 << (size - 1)) - 1;
+ if (value < min_value || value > max_value) {
+ ret = -1;
+ goto end;
+ }
+
+ integer->definition.value._signed = value;
+ integer->parent.payload_set = 1;
+end:
+ return ret;
+}
+
+int bt_ctf_field_unsigned_integer_get_value(struct bt_ctf_field *field,
+ uint64_t *value)
+{
+ int ret = 0;
+ struct bt_ctf_field_integer *integer;
+ struct bt_ctf_field_type_integer *integer_type;
+
+ if (!field || !value || !field->payload_set ||
+ bt_ctf_field_type_get_type_id(field->type) !=
+ BT_CTF_TYPE_ID_INTEGER) {
+ ret = -1;
+ goto end;
+ }
+
+ integer_type = container_of(field->type,
+ struct bt_ctf_field_type_integer, parent);
+ if (integer_type->declaration.signedness) {
+ ret = -1;
+ goto end;
+ }
+
+ integer = container_of(field,
+ struct bt_ctf_field_integer, parent);
+ *value = integer->definition.value._unsigned;
+end:
+ return ret;
+}
+
+int bt_ctf_field_unsigned_integer_set_value(struct bt_ctf_field *field,
+ uint64_t value)
+{
+ int ret = 0;
+ struct bt_ctf_field_integer *integer;
+ struct bt_ctf_field_type_integer *integer_type;
+ unsigned int size;
+ uint64_t max_value;
+
+ if (!field ||
+ bt_ctf_field_type_get_type_id(field->type) !=
+ BT_CTF_TYPE_ID_INTEGER) {
+ ret = -1;
+ goto end;
+ }
+
+ integer = container_of(field, struct bt_ctf_field_integer, parent);
+ integer_type = container_of(field->type,
+ struct bt_ctf_field_type_integer, parent);
+ if (integer_type->declaration.signedness) {
+ ret = -1;
+ goto end;
+ }
+
+ size = integer_type->declaration.len;
+ max_value = (size == 64) ? UINT64_MAX : ((uint64_t)1 << size) - 1;
+ if (value > max_value) {
+ ret = -1;
+ goto end;
+ }
+
+ integer->definition.value._unsigned = value;
+ integer->parent.payload_set = 1;
+end:
+ return ret;
+}
+
+int bt_ctf_field_floating_point_get_value(struct bt_ctf_field *field,
+ double *value)
+{
+ int ret = 0;
+ struct bt_ctf_field_floating_point *floating_point;
+
+ if (!field || !value || !field->payload_set ||
+ bt_ctf_field_type_get_type_id(field->type) !=
+ BT_CTF_TYPE_ID_FLOAT) {
+ ret = -1;
+ goto end;
+ }
+
+ floating_point = container_of(field,
+ struct bt_ctf_field_floating_point, parent);
+ *value = floating_point->definition.value;
+end:
+ return ret;
+}
+
+int bt_ctf_field_floating_point_set_value(struct bt_ctf_field *field,
+ double value)
+{
+ int ret = 0;
+ struct bt_ctf_field_floating_point *floating_point;
+
+ if (!field ||
+ bt_ctf_field_type_get_type_id(field->type) !=
+ BT_CTF_TYPE_ID_FLOAT) {
+ ret = -1;
+ goto end;
+ }
+ floating_point = container_of(field, struct bt_ctf_field_floating_point,
+ parent);
+ floating_point->definition.value = value;
+ floating_point->parent.payload_set = 1;
+end:
+ return ret;
+}
+
+const char *bt_ctf_field_string_get_value(struct bt_ctf_field *field)
+{
+ const char *ret = NULL;
+ struct bt_ctf_field_string *string;
+
+ if (!field || !field->payload_set ||
+ bt_ctf_field_type_get_type_id(field->type) !=
+ BT_CTF_TYPE_ID_STRING) {
+ goto end;
+ }
+
+ string = container_of(field,
+ struct bt_ctf_field_string, parent);
+ ret = string->payload->str;
+end:
+ return ret;
+}
+
+int bt_ctf_field_string_set_value(struct bt_ctf_field *field,
+ const char *value)
+{
+ int ret = 0;
+ struct bt_ctf_field_string *string;
+
+ if (!field || !value ||
+ bt_ctf_field_type_get_type_id(field->type) !=
+ BT_CTF_TYPE_ID_STRING) {
+ ret = -1;
+ goto end;
+ }
+
+ string = container_of(field, struct bt_ctf_field_string, parent);
+ if (string->payload) {
+ g_string_assign(string->payload, value);
+ } else {
+ string->payload = g_string_new(value);
+ }
+
+ string->parent.payload_set = 1;
+end:
+ return ret;
+}
+
+int bt_ctf_field_string_append(struct bt_ctf_field *field,
+ const char *value)
+{
+ int ret = 0;
+ struct bt_ctf_field_string *string_field;
+
+ if (!field || !value ||
+ bt_ctf_field_type_get_type_id(field->type) !=
+ BT_CTF_TYPE_ID_STRING) {
+ ret = -1;
+ goto end;
+ }
+
+ string_field = container_of(field, struct bt_ctf_field_string, parent);
+
+ if (string_field->payload) {
+ g_string_append(string_field->payload, value);
+ } else {
+ string_field->payload = g_string_new(value);
+ }
+
+ string_field->parent.payload_set = 1;
+
+end:
+ return ret;
+}
+
+int bt_ctf_field_string_append_len(struct bt_ctf_field *field,
+ const char *value, unsigned int length)
+{
+ int i;
+ int ret = 0;
+ unsigned int effective_length = length;
+ struct bt_ctf_field_string *string_field;
+
+ if (!field || !value ||
+ bt_ctf_field_type_get_type_id(field->type) !=
+ BT_CTF_TYPE_ID_STRING) {
+ ret = -1;
+ goto end;
+ }
+
+ string_field = container_of(field, struct bt_ctf_field_string, parent);
+
+ /* make sure no null bytes are appended */
+ for (i = 0; i < length; ++i) {
+ if (value[i] == '\0') {
+ effective_length = i;
+ break;
+ }
+ }
+
+ if (string_field->payload) {
+ g_string_append_len(string_field->payload, value,
+ effective_length);
+ } else {
+ string_field->payload = g_string_new_len(value,
+ effective_length);
+ }
+
+ string_field->parent.payload_set = 1;
+
+end:
+ return ret;
+}
+
+BT_HIDDEN
+int bt_ctf_field_validate(struct bt_ctf_field *field)
+{
+ int ret = 0;
+ enum bt_ctf_type_id type_id;
+
+ if (!field) {
+ ret = -1;
+ goto end;
+ }
+
+ type_id = bt_ctf_field_type_get_type_id(field->type);
+ if (type_id <= BT_CTF_TYPE_ID_UNKNOWN || type_id >= BT_CTF_NR_TYPE_IDS) {
+ ret = -1;
+ goto end;
+ }
+
+ ret = field_validate_funcs[type_id](field);
+end:
+ return ret;
+}
+
+BT_HIDDEN
+int bt_ctf_field_reset(struct bt_ctf_field *field)
+{
+ int ret = 0;
+ enum bt_ctf_type_id type_id;
+
+ if (!field) {
+ ret = -1;
+ goto end;
+ }
+
+ type_id = bt_ctf_field_type_get_type_id(field->type);
+ if (type_id <= BT_CTF_TYPE_ID_UNKNOWN || type_id >= BT_CTF_NR_TYPE_IDS) {
+ ret = -1;
+ goto end;
+ }
+
+ ret = field_reset_funcs[type_id](field);
+end:
+ return ret;
+}
+
+BT_HIDDEN
+int bt_ctf_field_serialize(struct bt_ctf_field *field,
+ struct ctf_stream_pos *pos)
+{
+ int ret = 0;
+ enum bt_ctf_type_id type_id;
+
+ if (!field || !pos) {
+ ret = -1;
+ goto end;
+ }
+
+ type_id = bt_ctf_field_type_get_type_id(field->type);
+ if (type_id <= BT_CTF_TYPE_ID_UNKNOWN || type_id >= BT_CTF_NR_TYPE_IDS) {
+ ret = -1;
+ goto end;
+ }
+
+ ret = field_serialize_funcs[type_id](field, pos);
+end:
+ return ret;
+}
+
+struct bt_ctf_field *bt_ctf_field_copy(struct bt_ctf_field *field)
+{
+ int ret;
+ struct bt_ctf_field *copy = NULL;
+ enum bt_ctf_type_id type_id;
+
+ if (!field) {
+ goto end;
+ }
+
+ type_id = bt_ctf_field_type_get_type_id(field->type);
+ if (type_id <= BT_CTF_TYPE_ID_UNKNOWN || type_id >= BT_CTF_NR_TYPE_IDS) {
+ goto end;
+ }
+
+ copy = bt_ctf_field_create(field->type);
+ if (!copy) {
+ goto end;
+ }
+
+ copy->payload_set = field->payload_set;
+ ret = field_copy_funcs[type_id](field, copy);
+ if (ret) {
+ bt_put(copy);
+ copy = NULL;
+ }
+end:
+ return copy;
+}
+
+static
+struct bt_ctf_field *bt_ctf_field_integer_create(struct bt_ctf_field_type *type)
+{
+ struct bt_ctf_field_type_integer *integer_type = container_of(type,
+ struct bt_ctf_field_type_integer, parent);
+ struct bt_ctf_field_integer *integer = g_new0(
+ struct bt_ctf_field_integer, 1);
+
+ if (integer) {
+ integer->definition.declaration = &integer_type->declaration;
+ }
+
+ return integer ? &integer->parent : NULL;
+}
+
+static
+struct bt_ctf_field *bt_ctf_field_enumeration_create(
+ struct bt_ctf_field_type *type)
+{
+ struct bt_ctf_field_enumeration *enumeration = g_new0(
+ struct bt_ctf_field_enumeration, 1);
+
+ return enumeration ? &enumeration->parent : NULL;
+}
+
+static
+struct bt_ctf_field *bt_ctf_field_floating_point_create(
+ struct bt_ctf_field_type *type)
+{
+ struct bt_ctf_field_floating_point *floating_point;
+ struct bt_ctf_field_type_floating_point *floating_point_type;
+
+ floating_point = g_new0(struct bt_ctf_field_floating_point, 1);
+ if (!floating_point) {
+ goto end;
+ }
+
+ floating_point_type = container_of(type,
+ struct bt_ctf_field_type_floating_point, parent);
+ floating_point->definition.declaration = container_of(
+ type->declaration, struct declaration_float, p);
+
+
+ floating_point->definition.sign = &floating_point->sign;
+ floating_point->sign.declaration = &floating_point_type->sign;
+ floating_point->definition.sign->p.declaration =
+ &floating_point_type->sign.p;
+
+ floating_point->definition.mantissa = &floating_point->mantissa;
+ floating_point->mantissa.declaration = &floating_point_type->mantissa;
+ floating_point->definition.mantissa->p.declaration =
+ &floating_point_type->mantissa.p;
+
+ floating_point->definition.exp = &floating_point->exp;
+ floating_point->exp.declaration = &floating_point_type->exp;
+ floating_point->definition.exp->p.declaration =
+ &floating_point_type->exp.p;
+
+end:
+ return floating_point ? &floating_point->parent : NULL;
+}
+
+static
+struct bt_ctf_field *bt_ctf_field_structure_create(
+ struct bt_ctf_field_type *type)
+{
+ struct bt_ctf_field_type_structure *structure_type = container_of(type,
+ struct bt_ctf_field_type_structure, parent);
+ struct bt_ctf_field_structure *structure = g_new0(
+ struct bt_ctf_field_structure, 1);
+ struct bt_ctf_field *field = NULL;
+
+ if (!structure) {
+ goto end;
+ }
+
+ structure->field_name_to_index = structure_type->field_name_to_index;
+ structure->fields = g_ptr_array_new_with_free_func(
+ (GDestroyNotify)bt_ctf_field_put);
+ g_ptr_array_set_size(structure->fields,
+ g_hash_table_size(structure->field_name_to_index));
+ field = &structure->parent;
+end:
+ return field;
+}
+
+static
+struct bt_ctf_field *bt_ctf_field_variant_create(struct bt_ctf_field_type *type)
+{
+ struct bt_ctf_field_variant *variant = g_new0(
+ struct bt_ctf_field_variant, 1);
+ return variant ? &variant->parent : NULL;
+}
+
+static
+struct bt_ctf_field *bt_ctf_field_array_create(struct bt_ctf_field_type *type)
+{
+ struct bt_ctf_field_array *array = g_new0(struct bt_ctf_field_array, 1);
+ struct bt_ctf_field_type_array *array_type;
+ unsigned int array_length;
+
+ if (!array || !type) {
+ goto error;
+ }
+
+ array_type = container_of(type, struct bt_ctf_field_type_array, parent);
+ array_length = array_type->length;
+ array->elements = g_ptr_array_sized_new(array_length);
+ if (!array->elements) {
+ goto error;
+ }
+
+ g_ptr_array_set_free_func(array->elements,
+ (GDestroyNotify)bt_ctf_field_put);
+ g_ptr_array_set_size(array->elements, array_length);
+ return &array->parent;
+error:
+ g_free(array);
+ return NULL;
+}
+
+static
+struct bt_ctf_field *bt_ctf_field_sequence_create(
+ struct bt_ctf_field_type *type)
+{
+ struct bt_ctf_field_sequence *sequence = g_new0(
+ struct bt_ctf_field_sequence, 1);
+ return sequence ? &sequence->parent : NULL;
+}
+
+static
+struct bt_ctf_field *bt_ctf_field_string_create(struct bt_ctf_field_type *type)
+{
+ struct bt_ctf_field_string *string = g_new0(
+ struct bt_ctf_field_string, 1);
+ return string ? &string->parent : NULL;
+}
+
+static
+void bt_ctf_field_destroy(struct bt_object *obj)
+{
+ struct bt_ctf_field *field;
+ struct bt_ctf_field_type *type;
+ enum bt_ctf_type_id type_id;
+
+ field = container_of(obj, struct bt_ctf_field, base);
+ type = field->type;
+ type_id = bt_ctf_field_type_get_type_id(type);
+ if (type_id <= BT_CTF_TYPE_ID_UNKNOWN ||
+ type_id >= BT_CTF_NR_TYPE_IDS) {
+ return;
+ }
+
+ field_destroy_funcs[type_id](field);
+ bt_put(type);
+}
+
+static
+void bt_ctf_field_integer_destroy(struct bt_ctf_field *field)
+{
+ struct bt_ctf_field_integer *integer;
+
+ if (!field) {
+ return;
+ }
+
+ integer = container_of(field, struct bt_ctf_field_integer, parent);
+ g_free(integer);
+}
+
+static
+void bt_ctf_field_enumeration_destroy(struct bt_ctf_field *field)
+{
+ struct bt_ctf_field_enumeration *enumeration;
+
+ if (!field) {
+ return;
+ }
+
+ enumeration = container_of(field, struct bt_ctf_field_enumeration,
+ parent);
+ bt_put(enumeration->payload);
+ g_free(enumeration);
+}
+
+static
+void bt_ctf_field_floating_point_destroy(struct bt_ctf_field *field)
+{
+ struct bt_ctf_field_floating_point *floating_point;
+
+ if (!field) {
+ return;
+ }
+
+ floating_point = container_of(field, struct bt_ctf_field_floating_point,
+ parent);
+ g_free(floating_point);
+}
+
+static
+void bt_ctf_field_structure_destroy(struct bt_ctf_field *field)
+{
+ struct bt_ctf_field_structure *structure;
+
+ if (!field) {
+ return;
+ }
+
+ structure = container_of(field, struct bt_ctf_field_structure, parent);
+ g_ptr_array_free(structure->fields, TRUE);
+ g_free(structure);
+}
+
+static
+void bt_ctf_field_variant_destroy(struct bt_ctf_field *field)
+{
+ struct bt_ctf_field_variant *variant;
+
+ if (!field) {
+ return;
+ }
+
+ variant = container_of(field, struct bt_ctf_field_variant, parent);
+ bt_put(variant->tag);
+ bt_put(variant->payload);
+ g_free(variant);
+}
+
+static
+void bt_ctf_field_array_destroy(struct bt_ctf_field *field)
+{
+ struct bt_ctf_field_array *array;
+
+ if (!field) {
+ return;
+ }
+
+ array = container_of(field, struct bt_ctf_field_array, parent);
+ g_ptr_array_free(array->elements, TRUE);
+ g_free(array);
+}
+
+static
+void bt_ctf_field_sequence_destroy(struct bt_ctf_field *field)
+{
+ struct bt_ctf_field_sequence *sequence;
+
+ if (!field) {
+ return;
+ }
+
+ sequence = container_of(field, struct bt_ctf_field_sequence, parent);
+ if (sequence->elements) {
+ g_ptr_array_free(sequence->elements, TRUE);
+ }
+ bt_put(sequence->length);
+ g_free(sequence);
+}
+
+static
+void bt_ctf_field_string_destroy(struct bt_ctf_field *field)
+{
+ struct bt_ctf_field_string *string;
+ if (!field) {
+ return;
+ }
+
+ string = container_of(field, struct bt_ctf_field_string, parent);
+ if (string->payload) {
+ g_string_free(string->payload, TRUE);
+ }
+ g_free(string);
+}
+
+static
+int bt_ctf_field_generic_validate(struct bt_ctf_field *field)
+{
+ return (field && field->payload_set) ? 0 : -1;
+}
+
+static
+int bt_ctf_field_enumeration_validate(struct bt_ctf_field *field)
+{
+ int ret;
+ struct bt_ctf_field_enumeration *enumeration;
+
+ if (!field) {
+ ret = -1;
+ goto end;
+ }
+
+ enumeration = container_of(field, struct bt_ctf_field_enumeration,
+ parent);
+ if (!enumeration->payload) {
+ ret = -1;
+ goto end;
+ }
+
+ ret = bt_ctf_field_validate(enumeration->payload);
+end:
+ return ret;
+}
+
+static
+int bt_ctf_field_structure_validate(struct bt_ctf_field *field)
+{
+ size_t i;
+ int ret = 0;
+ struct bt_ctf_field_structure *structure;
+
+ if (!field) {
+ ret = -1;
+ goto end;
+ }
+
+ structure = container_of(field, struct bt_ctf_field_structure, parent);
+ for (i = 0; i < structure->fields->len; i++) {
+ ret = bt_ctf_field_validate(structure->fields->pdata[i]);
+ if (ret) {
+ goto end;
+ }
+ }
+end:
+ return ret;
+}
+
+static
+int bt_ctf_field_variant_validate(struct bt_ctf_field *field)
+{
+ int ret = 0;
+ struct bt_ctf_field_variant *variant;
+
+ if (!field) {
+ ret = -1;
+ goto end;
+ }
+
+ variant = container_of(field, struct bt_ctf_field_variant, parent);
+ ret = bt_ctf_field_validate(variant->payload);
+end:
+ return ret;
+}
+
+static
+int bt_ctf_field_array_validate(struct bt_ctf_field *field)
+{
+ size_t i;
+ int ret = 0;
+ struct bt_ctf_field_array *array;
+
+ if (!field) {
+ ret = -1;
+ goto end;
+ }
+
+ array = container_of(field, struct bt_ctf_field_array, parent);
+ for (i = 0; i < array->elements->len; i++) {
+ ret = bt_ctf_field_validate(array->elements->pdata[i]);
+ if (ret) {
+ goto end;
+ }
+ }
+end:
+ return ret;
+}
+
+static
+int bt_ctf_field_sequence_validate(struct bt_ctf_field *field)
+{
+ size_t i;
+ int ret = 0;
+ struct bt_ctf_field_sequence *sequence;
+
+ if (!field) {
+ ret = -1;
+ goto end;
+ }
+
+ sequence = container_of(field, struct bt_ctf_field_sequence, parent);
+ for (i = 0; i < sequence->elements->len; i++) {
+ ret = bt_ctf_field_validate(sequence->elements->pdata[i]);
+ if (ret) {
+ goto end;
+ }
+ }
+end:
+ return ret;
+}
+
+static
+int bt_ctf_field_generic_reset(struct bt_ctf_field *field)
+{
+ int ret = 0;
+
+ if (!field) {
+ ret = -1;
+ goto end;
+ }
+
+ field->payload_set = 0;
+end:
+ return ret;
+}
+
+static
+int bt_ctf_field_enumeration_reset(struct bt_ctf_field *field)
+{
+ int ret = 0;
+ struct bt_ctf_field_enumeration *enumeration;
+
+ if (!field) {
+ ret = -1;
+ goto end;
+ }
+
+ enumeration = container_of(field, struct bt_ctf_field_enumeration,
+ parent);
+ if (!enumeration->payload) {
+ goto end;
+ }
+
+ ret = bt_ctf_field_reset(enumeration->payload);
+end:
+ return ret;
+}
+
+static
+int bt_ctf_field_structure_reset(struct bt_ctf_field *field)
+{
+ size_t i;
+ int ret = 0;
+ struct bt_ctf_field_structure *structure;
+
+ if (!field) {
+ ret = -1;
+ goto end;
+ }
+
+ structure = container_of(field, struct bt_ctf_field_structure, parent);
+ for (i = 0; i < structure->fields->len; i++) {
+ struct bt_ctf_field *member = structure->fields->pdata[i];
+
+ if (!member) {
+ /*
+ * Structure members are lazily initialized; skip if
+ * this member has not been allocated yet.
+ */
+ continue;
+ }
+
+ ret = bt_ctf_field_reset(member);
+ if (ret) {
+ goto end;
+ }
+ }
+end:
+ return ret;
+}
+
+static
+int bt_ctf_field_variant_reset(struct bt_ctf_field *field)
+{
+ int ret = 0;
+ struct bt_ctf_field_variant *variant;
+
+ if (!field) {
+ ret = -1;
+ goto end;
+ }
+
+ variant = container_of(field, struct bt_ctf_field_variant, parent);
+ if (variant->payload) {
+ ret = bt_ctf_field_reset(variant->payload);
+ }
+end:
+ return ret;
+}
+
+static
+int bt_ctf_field_array_reset(struct bt_ctf_field *field)
+{
+ size_t i;
+ int ret = 0;
+ struct bt_ctf_field_array *array;
+
+ if (!field) {
+ ret = -1;
+ goto end;
+ }
+
+ array = container_of(field, struct bt_ctf_field_array, parent);
+ for (i = 0; i < array->elements->len; i++) {
+ struct bt_ctf_field *member = array->elements->pdata[i];
+
+ if (!member) {
+ /*
+ * Array elements are lazily initialized; skip if
+ * this member has not been allocated yet.
+ */
+ continue;
+ }
+
+ ret = bt_ctf_field_reset(member);
+ if (ret) {
+ goto end;
+ }
+ }
+end:
+ return ret;
+}
+
+static
+int bt_ctf_field_sequence_reset(struct bt_ctf_field *field)
+{
+ size_t i;
+ int ret = 0;
+ struct bt_ctf_field_sequence *sequence;
+
+ if (!field) {
+ ret = -1;
+ goto end;
+ }
+
+ sequence = container_of(field, struct bt_ctf_field_sequence, parent);
+ for (i = 0; i < sequence->elements->len; i++) {
+ struct bt_ctf_field *member = sequence->elements->pdata[i];
+
+ if (!member) {
+ /*
+ * Sequence elements are lazily initialized; skip if
+ * this member has not been allocated yet.
+ */
+ continue;
+ }
+
+ ret = bt_ctf_field_reset(member);
+ if (ret) {
+ goto end;
+ }
+ }
+end:
+ return ret;
+}
+
+static
+int bt_ctf_field_string_reset(struct bt_ctf_field *field)
+{
+ int ret = 0;
+ struct bt_ctf_field_string *string;
+
+ if (!field) {
+ ret = -1;
+ goto end;
+ }
+
+ ret = bt_ctf_field_generic_reset(field);
+ if (ret) {
+ goto end;
+ }
+
+ string = container_of(field, struct bt_ctf_field_string, parent);
+ if (string->payload) {
+ g_string_truncate(string->payload, 0);
+ }
+end:
+ return ret;
+}
+
+static
+int bt_ctf_field_integer_serialize(struct bt_ctf_field *field,
+ struct ctf_stream_pos *pos)
+{
+ int ret = 0;
+ struct bt_ctf_field_integer *integer = container_of(field,
+ struct bt_ctf_field_integer, parent);
+
+retry:
+ ret = ctf_integer_write(&pos->parent, &integer->definition.p);
+ if (ret == -EFAULT) {
+ /*
+ * The field is too large to fit in the current packet's
+ * remaining space. Bump the packet size and retry.
+ */
+ ret = increase_packet_size(pos);
+ if (ret) {
+ goto end;
+ }
+ goto retry;
+ }
+end:
+ return ret;
+}
+
+static
+int bt_ctf_field_enumeration_serialize(struct bt_ctf_field *field,
+ struct ctf_stream_pos *pos)
+{
+ struct bt_ctf_field_enumeration *enumeration = container_of(
+ field, struct bt_ctf_field_enumeration, parent);
+
+ return bt_ctf_field_serialize(enumeration->payload, pos);
+}
+
+static
+int bt_ctf_field_floating_point_serialize(struct bt_ctf_field *field,
+ struct ctf_stream_pos *pos)
+{
+ int ret = 0;
+ struct bt_ctf_field_floating_point *floating_point = container_of(field,
+ struct bt_ctf_field_floating_point, parent);
+
+retry:
+ ret = ctf_float_write(&pos->parent, &floating_point->definition.p);
+ if (ret == -EFAULT) {
+ /*
+ * The field is too large to fit in the current packet's
+ * remaining space. Bump the packet size and retry.
+ */
+ ret = increase_packet_size(pos);
+ if (ret) {
+ goto end;
+ }
+ goto retry;
+ }
+end:
+ return ret;
+}
+
+static
+int bt_ctf_field_structure_serialize(struct bt_ctf_field *field,
+ struct ctf_stream_pos *pos)
+{
+ size_t i;
+ int ret = 0;
+ struct bt_ctf_field_structure *structure = container_of(
+ field, struct bt_ctf_field_structure, parent);
+
+ while (!ctf_pos_access_ok(pos,
+ offset_align(pos->offset,
+ field->type->declaration->alignment))) {
+ ret = increase_packet_size(pos);
+ if (ret) {
+ goto end;
+ }
+ }
+
+ if (!ctf_align_pos(pos, field->type->declaration->alignment)) {
+ ret = -1;
+ goto end;
+ }
+
+ for (i = 0; i < structure->fields->len; i++) {
+ struct bt_ctf_field *field = g_ptr_array_index(
+ structure->fields, i);
+
+ ret = bt_ctf_field_serialize(field, pos);
+ if (ret) {
+ break;
+ }
+ }
+end:
+ return ret;
+}
+
+static
+int bt_ctf_field_variant_serialize(struct bt_ctf_field *field,
+ struct ctf_stream_pos *pos)
+{
+ struct bt_ctf_field_variant *variant = container_of(
+ field, struct bt_ctf_field_variant, parent);
+
+ return bt_ctf_field_serialize(variant->payload, pos);
+}
+
+static
+int bt_ctf_field_array_serialize(struct bt_ctf_field *field,
+ struct ctf_stream_pos *pos)
+{
+ size_t i;
+ int ret = 0;
+ struct bt_ctf_field_array *array = container_of(
+ field, struct bt_ctf_field_array, parent);
+
+ for (i = 0; i < array->elements->len; i++) {
+ ret = bt_ctf_field_serialize(
+ g_ptr_array_index(array->elements, i), pos);
+ if (ret) {
+ goto end;
+ }
+ }
+end:
+ return ret;
+}
+
+static
+int bt_ctf_field_sequence_serialize(struct bt_ctf_field *field,
+ struct ctf_stream_pos *pos)
+{
+ size_t i;
+ int ret = 0;
+ struct bt_ctf_field_sequence *sequence = container_of(
+ field, struct bt_ctf_field_sequence, parent);
+
+ for (i = 0; i < sequence->elements->len; i++) {
+ ret = bt_ctf_field_serialize(
+ g_ptr_array_index(sequence->elements, i), pos);
+ if (ret) {
+ goto end;
+ }
+ }
+end:
+ return ret;
+}
+
+static
+int bt_ctf_field_string_serialize(struct bt_ctf_field *field,
+ struct ctf_stream_pos *pos)
+{
+ size_t i;
+ int ret = 0;
+ struct bt_ctf_field_string *string = container_of(field,
+ struct bt_ctf_field_string, parent);
+ struct bt_ctf_field_type *character_type =
+ get_field_type(FIELD_TYPE_ALIAS_UINT8_T);
+ struct bt_ctf_field *character = bt_ctf_field_create(character_type);
+
+ for (i = 0; i < string->payload->len + 1; i++) {
+ ret = bt_ctf_field_unsigned_integer_set_value(character,
+ (uint64_t) string->payload->str[i]);
+ if (ret) {
+ goto end;
+ }
+
+ ret = bt_ctf_field_integer_serialize(character, pos);
+ if (ret) {
+ goto end;
+ }
+ }
+end:
+ bt_put(character);
+ bt_put(character_type);
+ return ret;
+}
+
+static
+int bt_ctf_field_integer_copy(struct bt_ctf_field *src,
+ struct bt_ctf_field *dst)
+{
+ struct bt_ctf_field_integer *integer_src, *integer_dst;
+
+ integer_src = container_of(src, struct bt_ctf_field_integer, parent);
+ integer_dst = container_of(dst, struct bt_ctf_field_integer, parent);
+
+ memcpy(&integer_dst->definition, &integer_src->definition,
+ sizeof(struct definition_integer));
+ return 0;
+}
+
+static
+int bt_ctf_field_enumeration_copy(struct bt_ctf_field *src,
+ struct bt_ctf_field *dst)
+{
+ int ret = 0;
+ struct bt_ctf_field_enumeration *enum_src, *enum_dst;
+
+ enum_src = container_of(src, struct bt_ctf_field_enumeration, parent);
+ enum_dst = container_of(dst, struct bt_ctf_field_enumeration, parent);
+
+ if (enum_src->payload) {
+ enum_dst->payload = bt_ctf_field_copy(enum_src->payload);
+ if (!enum_dst->payload) {
+ ret = -1;
+ goto end;
+ }
+ }
+end:
+ return ret;
+}
+
+static
+int bt_ctf_field_floating_point_copy(
+ struct bt_ctf_field *src, struct bt_ctf_field *dst)
+{
+ struct bt_ctf_field_floating_point *float_src, *float_dst;
+
+ float_src = container_of(src, struct bt_ctf_field_floating_point,
+ parent);
+ float_dst = container_of(dst, struct bt_ctf_field_floating_point,
+ parent);
+
+ memcpy(&float_dst->definition, &float_src->definition,
+ sizeof(struct definition_float));
+ memcpy(&float_dst->sign, &float_src->sign,
+ sizeof(struct definition_integer));
+ memcpy(&float_dst->mantissa, &float_src->mantissa,
+ sizeof(struct definition_integer));
+ memcpy(&float_dst->exp, &float_src->exp,
+ sizeof(struct definition_integer));
+ return 0;
+}
+
+static
+int bt_ctf_field_structure_copy(struct bt_ctf_field *src,
+ struct bt_ctf_field *dst)
+{
+ int ret = 0, i;
+ struct bt_ctf_field_structure *struct_src, *struct_dst;
+
+ struct_src = container_of(src, struct bt_ctf_field_structure, parent);
+ struct_dst = container_of(dst, struct bt_ctf_field_structure, parent);
+
+ /* This field_name_to_index HT is owned by the structure field type */
+ struct_dst->field_name_to_index = struct_src->field_name_to_index;
+ g_ptr_array_set_size(struct_dst->fields, struct_src->fields->len);
+
+ for (i = 0; i < struct_src->fields->len; i++) {
+ struct bt_ctf_field *field =
+ g_ptr_array_index(struct_src->fields, i);
+ struct bt_ctf_field *field_copy = NULL;
+
+ if (field) {
+ field_copy = bt_ctf_field_copy(field);
+
+ if (!field_copy) {
+ ret = -1;
+ goto end;
+ }
+ }
+
+ g_ptr_array_index(struct_dst->fields, i) = field_copy;
+ }
+end:
+ return ret;
+}
+
+static
+int bt_ctf_field_variant_copy(struct bt_ctf_field *src,
+ struct bt_ctf_field *dst)
+{
+ int ret = 0;
+ struct bt_ctf_field_variant *variant_src, *variant_dst;
+
+ variant_src = container_of(src, struct bt_ctf_field_variant, parent);
+ variant_dst = container_of(dst, struct bt_ctf_field_variant, parent);
+
+ if (variant_src->tag) {
+ variant_dst->tag = bt_ctf_field_copy(variant_src->tag);
+ if (!variant_dst->tag) {
+ ret = -1;
+ goto end;
+ }
+ }
+ if (variant_src->payload) {
+ variant_dst->payload = bt_ctf_field_copy(variant_src->payload);
+ if (!variant_dst->payload) {
+ ret = -1;
+ goto end;
+ }
+ }
+end:
+ return ret;
+}
+
+static
+int bt_ctf_field_array_copy(struct bt_ctf_field *src,
+ struct bt_ctf_field *dst)
+{
+ int ret = 0, i;
+ struct bt_ctf_field_array *array_src, *array_dst;
+
+ array_src = container_of(src, struct bt_ctf_field_array, parent);
+ array_dst = container_of(dst, struct bt_ctf_field_array, parent);
+
+ g_ptr_array_set_size(array_dst->elements, array_src->elements->len);
+ for (i = 0; i < array_src->elements->len; i++) {
+ struct bt_ctf_field *field =
+ g_ptr_array_index(array_src->elements, i);
+ struct bt_ctf_field *field_copy = NULL;
+
+ if (field) {
+ field_copy = bt_ctf_field_copy(field);
+
+ if (!field_copy) {
+ ret = -1;
+ goto end;
+ }
+ }
+
+ g_ptr_array_index(array_dst->elements, i) = field_copy;
+ }
+end:
+ return ret;
+}
+
+static
+int bt_ctf_field_sequence_copy(struct bt_ctf_field *src,
+ struct bt_ctf_field *dst)
+{
+ int ret = 0, i;
+ struct bt_ctf_field_sequence *sequence_src, *sequence_dst;
+ struct bt_ctf_field *src_length;
+ struct bt_ctf_field *dst_length;
+
+ sequence_src = container_of(src, struct bt_ctf_field_sequence, parent);
+ sequence_dst = container_of(dst, struct bt_ctf_field_sequence, parent);
+
+ src_length = bt_ctf_field_sequence_get_length(src);
+
+ if (!src_length) {
+ /* no length set yet: keep destination sequence empty */
+ goto end;
+ }
+
+ /* copy source length */
+ dst_length = bt_ctf_field_copy(src_length);
+ bt_put(src_length);
+
+ if (!dst_length) {
+ ret = -1;
+ goto end;
+ }
+
+ /* this will initialize the destination sequence's internal array */
+ ret = bt_ctf_field_sequence_set_length(dst, dst_length);
+ bt_put(dst_length);
+
+ if (ret) {
+ goto end;
+ }
+
+ assert(sequence_dst->elements->len == sequence_src->elements->len);
+
+ for (i = 0; i < sequence_src->elements->len; i++) {
+ struct bt_ctf_field *field =
+ g_ptr_array_index(sequence_src->elements, i);
+ struct bt_ctf_field *field_copy = NULL;
+
+ if (field) {
+ field_copy = bt_ctf_field_copy(field);
+
+ if (!field_copy) {
+ ret = -1;
+ goto end;
+ }
+ }
+
+ g_ptr_array_index(sequence_dst->elements, i) = field_copy;
+ }
+end:
+ return ret;
+}
+
+static
+int bt_ctf_field_string_copy(struct bt_ctf_field *src,
+ struct bt_ctf_field *dst)
+{
+ int ret = 0;
+ struct bt_ctf_field_string *string_src, *string_dst;
+
+ string_src = container_of(src, struct bt_ctf_field_string, parent);
+ string_dst = container_of(dst, struct bt_ctf_field_string, parent);
+
+ if (string_src->payload) {
+ string_dst->payload = g_string_new(string_src->payload->str);
+ if (!string_dst->payload) {
+ ret = -1;
+ goto end;
+ }
+ }
+end:
+ return ret;
+}
+
+static
+int increase_packet_size(struct ctf_stream_pos *pos)
+{
+ int ret;
+
+ assert(pos);
+ ret = munmap_align(pos->base_mma);
+ if (ret) {
+ goto end;
+ }
+
+ pos->packet_size += PACKET_LEN_INCREMENT;
+ do {
+ ret = bt_posix_fallocate(pos->fd, pos->mmap_offset,
+ pos->packet_size / CHAR_BIT);
+ } while (ret == EINTR);
+ if (ret) {
+ errno = EINTR;
+ ret = -1;
+ goto end;
+ }
+
+ pos->base_mma = mmap_align(pos->packet_size / CHAR_BIT, pos->prot,
+ pos->flags, pos->fd, pos->mmap_offset);
+ if (pos->base_mma == MAP_FAILED) {
+ ret = -1;
+ }
+end:
+ return ret;
+}
projects / babeltrace.git / blobdiff