--- /dev/null
+/*
+ * event-fields.c
+ *
+ * Babeltrace CTF Writer
+ *
+ * Copyright 2013 EfficiOS Inc.
+ *
+ * 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-writer/event-fields.h>
+#include <babeltrace/ctf-writer/event-fields-internal.h>
+#include <babeltrace/ctf-writer/event-types-internal.h>
+#include <babeltrace/compiler.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_ctf_ref *);
+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 *field);
+static
+int bt_ctf_field_structure_validate(struct bt_ctf_field *field);
+static
+int bt_ctf_field_variant_validate(struct bt_ctf_field *field);
+static
+int bt_ctf_field_enumeration_validate(struct bt_ctf_field *field);
+static
+int bt_ctf_field_array_validate(struct bt_ctf_field *field);
+static
+int bt_ctf_field_sequence_validate(struct bt_ctf_field *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 increase_packet_size(struct ctf_stream_pos *pos);
+
+static
+struct bt_ctf_field *(*field_create_funcs[])(
+ struct bt_ctf_field_type *) = {
+ [CTF_TYPE_INTEGER] = bt_ctf_field_integer_create,
+ [CTF_TYPE_ENUM] = bt_ctf_field_enumeration_create,
+ [CTF_TYPE_FLOAT] =
+ bt_ctf_field_floating_point_create,
+ [CTF_TYPE_STRUCT] = bt_ctf_field_structure_create,
+ [CTF_TYPE_VARIANT] = bt_ctf_field_variant_create,
+ [CTF_TYPE_ARRAY] = bt_ctf_field_array_create,
+ [CTF_TYPE_SEQUENCE] = bt_ctf_field_sequence_create,
+ [CTF_TYPE_STRING] = bt_ctf_field_string_create,
+};
+
+static
+void (*field_destroy_funcs[])(struct bt_ctf_field *) = {
+ [CTF_TYPE_INTEGER] = bt_ctf_field_integer_destroy,
+ [CTF_TYPE_ENUM] = bt_ctf_field_enumeration_destroy,
+ [CTF_TYPE_FLOAT] =
+ bt_ctf_field_floating_point_destroy,
+ [CTF_TYPE_STRUCT] = bt_ctf_field_structure_destroy,
+ [CTF_TYPE_VARIANT] = bt_ctf_field_variant_destroy,
+ [CTF_TYPE_ARRAY] = bt_ctf_field_array_destroy,
+ [CTF_TYPE_SEQUENCE] = bt_ctf_field_sequence_destroy,
+ [CTF_TYPE_STRING] = bt_ctf_field_string_destroy,
+};
+
+static
+int (*field_validate_funcs[])(struct bt_ctf_field *) = {
+ [CTF_TYPE_INTEGER] = bt_ctf_field_generic_validate,
+ [CTF_TYPE_ENUM] = bt_ctf_field_enumeration_validate,
+ [CTF_TYPE_FLOAT] = bt_ctf_field_generic_validate,
+ [CTF_TYPE_STRUCT] = bt_ctf_field_structure_validate,
+ [CTF_TYPE_VARIANT] = bt_ctf_field_variant_validate,
+ [CTF_TYPE_ARRAY] = bt_ctf_field_array_validate,
+ [CTF_TYPE_SEQUENCE] = bt_ctf_field_sequence_validate,
+ [CTF_TYPE_STRING] = bt_ctf_field_generic_validate,
+};
+
+static
+int (*field_serialize_funcs[])(struct bt_ctf_field *,
+ struct ctf_stream_pos *) = {
+ [CTF_TYPE_INTEGER] = bt_ctf_field_integer_serialize,
+ [CTF_TYPE_ENUM] = bt_ctf_field_enumeration_serialize,
+ [CTF_TYPE_FLOAT] =
+ bt_ctf_field_floating_point_serialize,
+ [CTF_TYPE_STRUCT] = bt_ctf_field_structure_serialize,
+ [CTF_TYPE_VARIANT] = bt_ctf_field_variant_serialize,
+ [CTF_TYPE_ARRAY] = bt_ctf_field_array_serialize,
+ [CTF_TYPE_SEQUENCE] = bt_ctf_field_sequence_serialize,
+ [CTF_TYPE_STRING] = bt_ctf_field_string_serialize,
+};
+
+struct bt_ctf_field *bt_ctf_field_create(struct bt_ctf_field_type *type)
+{
+ struct bt_ctf_field *field = NULL;
+ enum ctf_type_id type_id;
+
+ if (!type) {
+ goto error;
+ }
+
+ type_id = bt_ctf_field_type_get_type_id(type);
+ if (type_id <= CTF_TYPE_UNKNOWN ||
+ type_id >= NR_CTF_TYPES) {
+ 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_ctf_field_type_get(type);
+ bt_ctf_ref_init(&field->ref_count);
+ field->type = type;
+error:
+ return field;
+}
+
+void bt_ctf_field_get(struct bt_ctf_field *field)
+{
+ if (field) {
+ bt_ctf_ref_get(&field->ref_count);
+ }
+}
+
+void bt_ctf_field_put(struct bt_ctf_field *field)
+{
+ if (field) {
+ bt_ctf_ref_put(&field->ref_count, bt_ctf_field_destroy);
+ }
+}
+
+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) !=
+ CTF_TYPE_INTEGER) {
+ ret = -1;
+ goto end;
+ }
+
+ length_type = container_of(length_field->type,
+ struct bt_ctf_field_type_integer, parent);
+ 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_ctf_field_put(sequence->length);
+ }
+
+ sequence->elements = g_ptr_array_new_full((size_t)sequence_length,
+ (GDestroyNotify)bt_ctf_field_put);
+ if (!sequence->elements) {
+ ret = -1;
+ goto end;
+ }
+
+ g_ptr_array_set_size(sequence->elements, (size_t)sequence_length);
+ bt_ctf_field_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_structure *structure_type;
+ struct bt_ctf_field_type *field_type;
+ size_t index;
+
+ if (!field || !name ||
+ bt_ctf_field_type_get_type_id(field->type) !=
+ CTF_TYPE_STRUCT) {
+ goto error;
+ }
+
+ field_quark = g_quark_from_string(name);
+ structure = container_of(field, struct bt_ctf_field_structure, parent);
+ structure_type = container_of(field->type,
+ struct bt_ctf_field_type_structure, parent);
+ field_type = bt_ctf_field_type_structure_get_type(structure_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_ctf_field_get(new_field);
+error:
+ return new_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_structure *structure_type;
+ struct bt_ctf_field_type *expected_field_type;
+ size_t index;
+
+ if (!field || !name || !value ||
+ bt_ctf_field_type_get_type_id(field->type) !=
+ CTF_TYPE_STRUCT) {
+ ret = -1;
+ goto end;
+ }
+
+ field_quark = g_quark_from_string(name);
+ structure = container_of(field, struct bt_ctf_field_structure, parent);
+ structure_type = container_of(field->type,
+ struct bt_ctf_field_type_structure, parent);
+ expected_field_type = bt_ctf_field_type_structure_get_type(
+ structure_type, name);
+ if (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_ctf_field_put(structure->fields->pdata[index]);
+ }
+
+ structure->fields->pdata[index] = value;
+ bt_ctf_field_get(value);
+end:
+ 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_array *array;
+ struct bt_ctf_field_type_array *array_type;
+ struct bt_ctf_field_type *field_type;
+
+ if (!field || bt_ctf_field_type_get_type_id(field->type) !=
+ CTF_TYPE_ARRAY) {
+ goto end;
+ }
+
+ array = container_of(field, struct bt_ctf_field_array, parent);
+ if (index >= array->elements->len) {
+ goto end;
+ }
+
+ array_type = container_of(field->type, struct bt_ctf_field_type_array,
+ parent);
+ field_type = bt_ctf_field_type_array_get_element_type(array_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);
+ bt_ctf_field_get(new_field);
+ array->elements->pdata[(size_t)index] = new_field;
+end:
+ 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_sequence *sequence;
+ struct bt_ctf_field_type_sequence *sequence_type;
+ struct bt_ctf_field_type *field_type;
+
+ if (!field || bt_ctf_field_type_get_type_id(field->type) !=
+ CTF_TYPE_SEQUENCE) {
+ goto end;
+ }
+
+ sequence = container_of(field, struct bt_ctf_field_sequence, parent);
+ if (!sequence->elements || sequence->elements->len <= index) {
+ goto end;
+ }
+
+ sequence_type = container_of(field->type,
+ struct bt_ctf_field_type_sequence, parent);
+ field_type = bt_ctf_field_type_sequence_get_element_type(sequence_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);
+ bt_ctf_field_get(new_field);
+ sequence->elements->pdata[(size_t)index] = new_field;
+end:
+ 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) !=
+ CTF_TYPE_VARIANT ||
+ bt_ctf_field_type_get_type_id(tag_field->type) !=
+ CTF_TYPE_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(variant->tag)) {
+ goto end;
+ }
+
+ tag_enum_value = tag_enum_integer->definition.value._signed;
+ field_type = bt_ctf_field_type_variant_get_field_type(variant_type,
+ tag_enum_value);
+ if (!field_type) {
+ goto end;
+ }
+
+ new_field = bt_ctf_field_create(field_type);
+ if (!new_field) {
+ goto end;
+ }
+
+ bt_ctf_field_put(variant->tag);
+ bt_ctf_field_put(variant->payload);
+ bt_ctf_field_get(new_field);
+ bt_ctf_field_get(tag_field);
+ variant->tag = tag_field;
+ variant->payload = new_field;
+end:
+ bt_ctf_field_put(tag_enum);
+ return new_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) {
+ 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_ctf_field_get(container);
+end:
+ return container;
+}
+
+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) !=
+ CTF_TYPE_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_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) !=
+ CTF_TYPE_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_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) !=
+ CTF_TYPE_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;
+}
+
+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) !=
+ CTF_TYPE_STRING) {
+ ret = -1;
+ goto end;
+ }
+
+ string = container_of(field, struct bt_ctf_field_string, parent);
+ if (string->payload) {
+ g_string_free(string->payload, TRUE);
+ }
+
+ string->payload = g_string_new(value);
+ string->parent.payload_set = 1;
+end:
+ return ret;
+}
+
+BT_HIDDEN
+int bt_ctf_field_validate(struct bt_ctf_field *field)
+{
+ int ret = 0;
+ enum 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 <= CTF_TYPE_UNKNOWN || type_id >= NR_CTF_TYPES) {
+ ret = -1;
+ goto end;
+ }
+
+ ret = field_validate_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 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 <= CTF_TYPE_UNKNOWN || type_id >= NR_CTF_TYPES) {
+ ret = -1;
+ goto end;
+ }
+
+ ret = field_serialize_funcs[type_id](field, pos);
+end:
+ return ret;
+}
+
+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 || !structure_type->fields->len) {
+ 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_new_full(array_length,
+ (GDestroyNotify)bt_ctf_field_put);
+ if (!array->elements) {
+ goto error;
+ }
+
+ 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_ctf_ref *ref)
+{
+ struct bt_ctf_field *field;
+ struct bt_ctf_field_type *type;
+ enum ctf_type_id type_id;
+
+ if (!ref) {
+ return;
+ }
+
+ field = container_of(ref, struct bt_ctf_field, ref_count);
+ type = field->type;
+ type_id = bt_ctf_field_type_get_type_id(type);
+ if (type_id <= CTF_TYPE_UNKNOWN ||
+ type_id >= NR_CTF_TYPES) {
+ return;
+ }
+
+ field_destroy_funcs[type_id](field);
+ if (type) {
+ bt_ctf_field_type_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_ctf_field_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_ctf_field_put(variant->tag);
+ bt_ctf_field_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);
+ g_ptr_array_free(sequence->elements, TRUE);
+ bt_ctf_field_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);
+ 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);
+}
+
+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_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))) {
+ increase_packet_size(pos);
+ }
+
+ ctf_align_pos(pos, field->type->declaration->alignment);
+
+ 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;
+ }
+ }
+
+ 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_ctf_field_put(character);
+ bt_ctf_field_type_put(character_type);
+ 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;
+ ret = posix_fallocate(pos->fd, pos->mmap_offset,
+ pos->packet_size / CHAR_BIT);
+ if (ret) {
+ 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