#include "ust-field-convert.hpp"
+#include <common/exception.hpp>
#include <common/make-unique.hpp>
#include <unordered_map>
+#include <utility>
namespace lst = lttng::sessiond::trace;
namespace lsu = lttng::sessiond::ust;
class session_attributes {
public:
using registry_enum_getter_fn =
- std::function<lsu::registry_enum::const_rcu_protected_reference(
- const char *name, uint64_t id)>;
+ std::function<lsu::registry_enum::const_rcu_protected_reference(const char *name,
+ uint64_t id)>;
session_attributes(registry_enum_getter_fn reg_enum_getter,
- lst::byte_order native_trace_byte_order) :
- get_registry_enum{reg_enum_getter}, _native_trace_byte_order{native_trace_byte_order}
+ lst::byte_order native_trace_byte_order) :
+ get_registry_enum{ std::move(reg_enum_getter) },
+ _native_trace_byte_order{ native_trace_byte_order }
{
}
};
/* Used to publish fields on which a field being decoded has an implicit dependency. */
-using publish_field_fn = std::function<void(lst::field::cuptr)>;
-
-lst::type::cuptr create_type_from_ust_ctl_fields(const lttng_ust_ctl_field *current,
- const lttng_ust_ctl_field *end,
- const session_attributes& session_attributes,
- const lttng_ust_ctl_field **next_ust_ctl_field,
- publish_field_fn publish_field);
+using publish_field_fn = std::function<void(lst::field::uptr)>;
+
+/* Look-up field from a field location. */
+using lookup_field_fn = std::function<const lst::field&(const lst::field_location&)>;
+
+lst::type::cuptr
+create_type_from_ust_ctl_fields(const lttng_ust_ctl_field *current,
+ const lttng_ust_ctl_field *end,
+ const session_attributes& session_attributes,
+ const lttng_ust_ctl_field **next_ust_ctl_field,
+ const publish_field_fn& publish_field,
+ const lookup_field_fn& lookup_field,
+ lst::field_location::root lookup_root,
+ lst::field_location::elements& current_field_location_elements,
+ lsu::ctl_field_quirks quirks);
void create_field_from_ust_ctl_fields(const lttng_ust_ctl_field *current,
- const lttng_ust_ctl_field *end,
- const session_attributes& session_attributes,
- const lttng_ust_ctl_field **next_ust_ctl_field,
- publish_field_fn publish_field);
+ const lttng_ust_ctl_field *end,
+ const session_attributes& session_attributes,
+ const lttng_ust_ctl_field **next_ust_ctl_field,
+ const publish_field_fn& publish_field,
+ const lookup_field_fn& lookup_field,
+ lst::field_location::root lookup_root,
+ lst::field_location::elements& current_field_location_elements,
+ lsu::ctl_field_quirks quirks);
template <class UstCtlEncodingType>
-enum lst::null_terminated_string_type::encoding ust_ctl_encoding_to_string_field_encoding(UstCtlEncodingType encoding)
+enum lst::null_terminated_string_type::encoding
+ust_ctl_encoding_to_string_field_encoding(UstCtlEncodingType encoding)
{
- static const std::unordered_map<UstCtlEncodingType, enum lst::null_terminated_string_type::encoding>
- encoding_conversion_map = {
- {(UstCtlEncodingType) lttng_ust_ctl_encode_ASCII,
- lst::null_terminated_string_type::encoding::ASCII},
- {(UstCtlEncodingType) lttng_ust_ctl_encode_UTF8,
- lst::null_terminated_string_type::encoding::UTF8},
- };
+ static const std::unordered_map<UstCtlEncodingType,
+ enum lst::null_terminated_string_type::encoding>
+ encoding_conversion_map = {
+ { (UstCtlEncodingType) lttng_ust_ctl_encode_ASCII,
+ lst::null_terminated_string_type::encoding::ASCII },
+ { (UstCtlEncodingType) lttng_ust_ctl_encode_UTF8,
+ lst::null_terminated_string_type::encoding::UTF8 },
+ };
const auto encoding_it = encoding_conversion_map.find(encoding);
if (encoding_it == encoding_conversion_map.end()) {
LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
- "Unknown lttng_ust_ctl_string_encodings value `{}` encountered when decoding integer field",
- encoding));
+ "Unknown lttng_ust_ctl_string_encodings value `{}` encountered when decoding integer field",
+ encoding));
}
return encoding_it->second;
enum lst::integer_type::base ust_ctl_base_to_integer_field_base(UstCtlBaseType base)
{
static const std::unordered_map<UstCtlBaseType, enum lst::integer_type::base>
- base_conversion_map = {{2, lst::integer_type::base::BINARY},
- {8, lst::integer_type::base::OCTAL},
- {10, lst::integer_type::base::DECIMAL},
- {16, lst::integer_type::base::HEXADECIMAL}};
+ base_conversion_map = { { 2, lst::integer_type::base::BINARY },
+ { 8, lst::integer_type::base::OCTAL },
+ { 10, lst::integer_type::base::DECIMAL },
+ { 16, lst::integer_type::base::HEXADECIMAL } };
const auto base_it = base_conversion_map.find(base);
if (base_it == base_conversion_map.end()) {
LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
- "Unknown integer base value `{}` encountered when decoding integer field",
- base));
+ "Unknown integer base value `{}` encountered when decoding integer field",
+ base));
}
return base_it->second;
}
-lst::type::cuptr create_integer_type_from_ust_ctl_fields(const lttng_ust_ctl_field *current,
- const lttng_ust_ctl_field *end,
- const session_attributes& session_attributes,
- const lttng_ust_ctl_field **next_ust_ctl_field)
+lst::type::cuptr
+create_integer_type_from_ust_ctl_fields(const lttng_ust_ctl_field *current,
+ const lttng_ust_ctl_field *end,
+ const session_attributes& session_attributes,
+ const lttng_ust_ctl_field **next_ust_ctl_field,
+ lsu::ctl_field_quirks quirks __attribute__((unused)))
{
if (current >= end) {
- LTTNG_THROW_PROTOCOL_ERROR(
- fmt::format("End of {} array reached unexpectedly during decoding",
- typeid(*current)));
+ LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
+ "End of {} array reached unexpectedly during decoding", typeid(*current)));
}
const auto base = ust_ctl_base_to_integer_field_base(current->type.u.integer.base);
const auto signedness = current->type.u.integer.signedness ?
- lst::integer_type::signedness::SIGNED :
- lst::integer_type::signedness::UNSIGNED;
+ lst::integer_type::signedness::SIGNED :
+ lst::integer_type::signedness::UNSIGNED;
const auto byte_order = current->type.u.integer.reverse_byte_order ?
- lst::type::reverse_byte_order(session_attributes._native_trace_byte_order) :
- session_attributes._native_trace_byte_order;
+ lst::type::reverse_byte_order(session_attributes._native_trace_byte_order) :
+ session_attributes._native_trace_byte_order;
*next_ust_ctl_field = current + 1;
return lttng::make_unique<const lst::integer_type>(current->type.u.integer.alignment,
- byte_order, current->type.u.integer.size, signedness, base);
+ byte_order,
+ current->type.u.integer.size,
+ signedness,
+ base);
}
-lst::type::cuptr create_floating_point_type_from_ust_ctl_fields(const lttng_ust_ctl_field *current,
- const lttng_ust_ctl_field *end,
- const session_attributes& session_attributes,
- const lttng_ust_ctl_field **next_ust_ctl_field)
+lst::type::cuptr
+create_floating_point_type_from_ust_ctl_fields(const lttng_ust_ctl_field *current,
+ const lttng_ust_ctl_field *end,
+ const session_attributes& session_attributes,
+ const lttng_ust_ctl_field **next_ust_ctl_field,
+ lsu::ctl_field_quirks quirks __attribute__((unused)))
{
if (current >= end) {
- LTTNG_THROW_PROTOCOL_ERROR(
- fmt::format("End of {} array reached unexpectedly during decoding",
- typeid(*current)));
+ LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
+ "End of {} array reached unexpectedly during decoding", typeid(*current)));
}
*next_ust_ctl_field = current + 1;
const auto byte_order = current->type.u._float.reverse_byte_order ?
- lst::type::reverse_byte_order(session_attributes._native_trace_byte_order) :
- session_attributes._native_trace_byte_order;
+ lst::type::reverse_byte_order(session_attributes._native_trace_byte_order) :
+ session_attributes._native_trace_byte_order;
try {
return lttng::make_unique<const lst::floating_point_type>(
- current->type.u._float.alignment, byte_order,
- current->type.u._float.exp_dig, current->type.u._float.mant_dig);
+ current->type.u._float.alignment,
+ byte_order,
+ current->type.u._float.exp_dig,
+ current->type.u._float.mant_dig);
} catch (lttng::invalid_argument_error& ex) {
- LTTNG_THROW_PROTOCOL_ERROR(fmt::format("Invalid floating point attribute in {}: {}",
- typeid(*current), ex.what()));
+ LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
+ "Invalid floating point attribute in {}: {}", typeid(*current), ex.what()));
}
}
-lst::type::cuptr create_enumeration_type_from_ust_ctl_fields(const lttng_ust_ctl_field *current,
- const lttng_ust_ctl_field *end,
- const session_attributes& session_attributes,
- const lttng_ust_ctl_field **next_ust_ctl_field)
+lst::type::cuptr
+create_enumeration_type_from_ust_ctl_fields(const lttng_ust_ctl_field *current,
+ const lttng_ust_ctl_field *end,
+ const session_attributes& session_attributes,
+ const lttng_ust_ctl_field **next_ust_ctl_field,
+ lsu::ctl_field_quirks quirks __attribute__((unused)))
{
if (current >= end) {
- LTTNG_THROW_PROTOCOL_ERROR(
- fmt::format("End of {} array reached unexpectedly during decoding",
- typeid(*current)));
+ LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
+ "End of {} array reached unexpectedly during decoding", typeid(*current)));
}
uint64_t enumeration_id;
const auto& enum_uctl_field = *current;
const char *enumeration_name;
const auto *enum_container_uctl_type =
- ¤t->type.u.legacy.basic.enumeration.container_type;
+ ¤t->type.u.legacy.basic.enumeration.container_type;
if (enum_uctl_field.type.atype == lttng_ust_ctl_atype_enum_nestable) {
/* Nestable enumeration fields are followed by their container type. */
++current;
if (current >= end) {
LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
- "Array of {} is too short to contain nestable enumeration's container",
- typeid(*current)));
+ "Array of {} is too short to contain nestable enumeration's container",
+ typeid(*current)));
}
if (current->type.atype != lttng_ust_ctl_atype_integer) {
- LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
- "Invalid type of nestable enum container: type id = {}",
- current->type.atype));
+ LTTNG_THROW_PROTOCOL_ERROR(
+ fmt::format("Invalid type of nestable enum container: type id = {}",
+ current->type.atype));
}
enum_container_uctl_type = ¤t->type.u.integer;
const auto base = ust_ctl_base_to_integer_field_base(enum_container_uctl_type->base);
const auto byte_order = enum_container_uctl_type->reverse_byte_order ?
- lst::integer_type::reverse_byte_order(
- session_attributes._native_trace_byte_order) :
- session_attributes._native_trace_byte_order;
+ lst::integer_type::reverse_byte_order(session_attributes._native_trace_byte_order) :
+ session_attributes._native_trace_byte_order;
const auto signedness = enum_container_uctl_type->signedness ?
- lst::integer_type::signedness::SIGNED :
- lst::integer_type::signedness::UNSIGNED;
+ lst::integer_type::signedness::SIGNED :
+ lst::integer_type::signedness::UNSIGNED;
- if (enum_container_uctl_type->signedness) {
+ if (signedness == lst::integer_type::signedness::SIGNED) {
const auto& enum_registry = static_cast<const lsu::registry_signed_enum&>(
- *session_attributes.get_registry_enum(
- enumeration_name, enumeration_id));
+ *session_attributes.get_registry_enum(enumeration_name, enumeration_id));
return lttng::make_unique<const lst::signed_enumeration_type>(
- enum_container_uctl_type->alignment, byte_order,
- enum_container_uctl_type->size, signedness, base,
- enum_registry._mappings);
+ enum_container_uctl_type->alignment,
+ byte_order,
+ enum_container_uctl_type->size,
+ base,
+ enum_registry._mappings);
} else {
const auto& enum_registry = static_cast<const lsu::registry_unsigned_enum&>(
- *session_attributes.get_registry_enum(
- enumeration_name, enumeration_id));
+ *session_attributes.get_registry_enum(enumeration_name, enumeration_id));
return lttng::make_unique<const lst::unsigned_enumeration_type>(
- enum_container_uctl_type->alignment, byte_order,
- enum_container_uctl_type->size, signedness, base,
- enum_registry._mappings);
+ enum_container_uctl_type->alignment,
+ byte_order,
+ enum_container_uctl_type->size,
+ base,
+ enum_registry._mappings);
}
}
-lst::type::cuptr create_string_type_from_ust_ctl_fields(const lttng_ust_ctl_field *current,
- const lttng_ust_ctl_field *end,
- const session_attributes& session_attributes __attribute__((unused)),
- const lttng_ust_ctl_field **next_ust_ctl_field)
+lst::type::cuptr
+create_string_type_from_ust_ctl_fields(const lttng_ust_ctl_field *current,
+ const lttng_ust_ctl_field *end,
+ const session_attributes& session_attributes
+ __attribute__((unused)),
+ const lttng_ust_ctl_field **next_ust_ctl_field,
+ lsu::ctl_field_quirks quirks __attribute__((unused)))
{
if (current >= end) {
- LTTNG_THROW_PROTOCOL_ERROR(
- fmt::format("End of {} array reached unexpectedly during decoding",
- typeid(*current)));
+ LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
+ "End of {} array reached unexpectedly during decoding", typeid(*current)));
}
const auto& string_uctl_field = *current;
*next_ust_ctl_field = current + 1;
- const auto encoding = ust_ctl_encoding_to_string_field_encoding(
- string_uctl_field.type.u.string.encoding);
+ const auto encoding =
+ ust_ctl_encoding_to_string_field_encoding(string_uctl_field.type.u.string.encoding);
return lttng::make_unique<const lst::null_terminated_string_type>(1, encoding);
}
-lst::type::cuptr create_integer_type_from_ust_ctl_basic_type(
- const lttng_ust_ctl_basic_type& type, const session_attributes& session_attributes)
+lst::type::cuptr
+create_integer_type_from_ust_ctl_basic_type(const lttng_ust_ctl_basic_type& type,
+ const session_attributes& session_attributes)
{
/* Checked by caller. */
LTTNG_ASSERT(type.atype == lttng_ust_ctl_atype_integer);
const auto byte_order = type.u.basic.integer.reverse_byte_order ?
- lst::integer_type::reverse_byte_order(
- session_attributes._native_trace_byte_order) :
- session_attributes._native_trace_byte_order;
+ lst::integer_type::reverse_byte_order(session_attributes._native_trace_byte_order) :
+ session_attributes._native_trace_byte_order;
const auto signedness = type.u.basic.integer.signedness ?
- lst::integer_type::signedness::SIGNED :
- lst::integer_type::signedness::UNSIGNED;
+ lst::integer_type::signedness::SIGNED :
+ lst::integer_type::signedness::UNSIGNED;
const auto base = ust_ctl_base_to_integer_field_base(type.u.basic.integer.base);
const auto size = type.u.basic.integer.size;
const auto alignment = type.u.basic.integer.alignment;
return lttng::make_unique<const lst::integer_type>(
- alignment, byte_order, size, signedness, base);
+ alignment, byte_order, size, signedness, base);
}
-lst::type::cuptr create_array_type_from_ust_ctl_fields(const lttng_ust_ctl_field *current,
- const lttng_ust_ctl_field *end,
- const session_attributes& session_attributes,
- const lttng_ust_ctl_field **next_ust_ctl_field)
+lst::type::cuptr
+create_array_type_from_ust_ctl_fields(const lttng_ust_ctl_field *current,
+ const lttng_ust_ctl_field *end,
+ const session_attributes& session_attributes,
+ const lttng_ust_ctl_field **next_ust_ctl_field,
+ lsu::ctl_field_quirks quirks __attribute__((unused)))
{
if (current >= end) {
- LTTNG_THROW_PROTOCOL_ERROR(
- fmt::format("End of {} array reached unexpectedly during decoding",
- typeid(*current)));
+ LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
+ "End of {} array reached unexpectedly during decoding", typeid(*current)));
}
const auto& array_uctl_field = *current;
const auto& element_uctl_type = array_uctl_field.type.u.legacy.array.elem_type;
if (element_uctl_type.atype != lttng_ust_ctl_atype_integer) {
LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
- "Unexpected legacy array element type: atype = {}, expected atype = lttng_ust_ctl_atype_integer ({})",
- element_uctl_type.atype, lttng_ust_ctl_atype_integer));
+ "Unexpected legacy array element type: atype = {}, expected atype = lttng_ust_ctl_atype_integer ({})",
+ element_uctl_type.atype,
+ lttng_ust_ctl_atype_integer));
}
- element_type = create_integer_type_from_ust_ctl_basic_type(
- element_uctl_type, session_attributes);
+ element_type =
+ create_integer_type_from_ust_ctl_basic_type(element_uctl_type, session_attributes);
if (element_uctl_type.atype == lttng_ust_ctl_atype_integer &&
- element_uctl_type.u.basic.integer.encoding != lttng_ust_ctl_encode_none) {
+ element_uctl_type.u.basic.integer.encoding != lttng_ust_ctl_encode_none) {
/* Element represents a text character. */
element_encoding = ust_ctl_encoding_to_string_field_encoding(
- element_uctl_type.u.basic.integer.encoding);
+ element_uctl_type.u.basic.integer.encoding);
}
*next_ust_ctl_field = current + 1;
if (element_encoding) {
const auto integer_element_size =
- static_cast<const lst::integer_type&>(*element_type).size;
+ static_cast<const lst::integer_type&>(*element_type).size;
if (integer_element_size != 8) {
LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
- "Unexpected legacy array element type: integer has encoding but size is not 8: size = {}",
- integer_element_size));
+ "Unexpected legacy array element type: integer has encoding but size is not 8: size = {}",
+ integer_element_size));
}
/* Array is a static-length string. */
return lttng::make_unique<lst::static_length_string_type>(
- array_alignment, *element_encoding, array_length);
+ array_alignment, *element_encoding, array_length);
}
return lttng::make_unique<lst::static_length_array_type>(
- array_alignment, std::move(element_type), array_length);
+ array_alignment, std::move(element_type), array_length);
}
-lst::type::cuptr create_array_nestable_type_from_ust_ctl_fields(const lttng_ust_ctl_field *current,
- const lttng_ust_ctl_field *end,
- const session_attributes& session_attributes,
- const lttng_ust_ctl_field **next_ust_ctl_field,
- publish_field_fn publish_field)
+lst::type::cuptr create_array_nestable_type_from_ust_ctl_fields(
+ const lttng_ust_ctl_field *current,
+ const lttng_ust_ctl_field *end,
+ const session_attributes& session_attributes,
+ const lttng_ust_ctl_field **next_ust_ctl_field,
+ const publish_field_fn& publish_field,
+ const lookup_field_fn& lookup_field,
+ lst::field_location::root lookup_root,
+ lst::field_location::elements& current_field_location_elements,
+ lsu::ctl_field_quirks quirks)
{
if (current >= end) {
- LTTNG_THROW_PROTOCOL_ERROR(
- fmt::format("End of {} array reached unexpectedly during decoding",
- typeid(*current)));
+ LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
+ "End of {} array reached unexpectedly during decoding", typeid(*current)));
}
const auto& array_uctl_field = *current;
const auto& element_uctl_field = *(current + 1);
/* next_ust_ctl_field is updated as needed. */
- element_type = create_type_from_ust_ctl_fields(&element_uctl_field, end, session_attributes,
- next_ust_ctl_field, publish_field);
+ element_type = create_type_from_ust_ctl_fields(&element_uctl_field,
+ end,
+ session_attributes,
+ next_ust_ctl_field,
+ publish_field,
+ lookup_field,
+ lookup_root,
+ current_field_location_elements,
+ quirks);
if (element_uctl_field.type.atype == lttng_ust_ctl_atype_integer &&
- element_uctl_field.type.u.integer.encoding != lttng_ust_ctl_encode_none) {
+ element_uctl_field.type.u.integer.encoding != lttng_ust_ctl_encode_none) {
/* Element represents a text character. */
element_encoding = ust_ctl_encoding_to_string_field_encoding(
- element_uctl_field.type.u.integer.encoding);
+ element_uctl_field.type.u.integer.encoding);
}
if (element_encoding) {
const auto integer_element_size =
- static_cast<const lst::integer_type&>(*element_type).size;
+ static_cast<const lst::integer_type&>(*element_type).size;
if (integer_element_size != 8) {
LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
- "Unexpected array element type: integer has encoding but size is not 8: size = {}",
- integer_element_size));
+ "Unexpected array element type: integer has encoding but size is not 8: size = {}",
+ integer_element_size));
}
/* Array is a static-length string. */
return lttng::make_unique<lst::static_length_string_type>(
- array_alignment, *element_encoding, array_length);
+ array_alignment, *element_encoding, array_length);
}
return lttng::make_unique<lst::static_length_array_type>(
- array_alignment, std::move(element_type), array_length);
+ array_alignment, std::move(element_type), array_length);
}
/*
* For legacy sequence types, LTTng-UST expresses both the sequence and sequence
* length as part of the same lttng_ust_ctl_field entry.
*/
-lst::type::cuptr create_sequence_type_from_ust_ctl_fields(const lttng_ust_ctl_field *current,
- const lttng_ust_ctl_field *end,
- const session_attributes& session_attributes,
- const lttng_ust_ctl_field **next_ust_ctl_field,
- publish_field_fn publish_field)
+lst::type::cuptr create_sequence_type_from_ust_ctl_fields(
+ const lttng_ust_ctl_field *current,
+ const lttng_ust_ctl_field *end,
+ const session_attributes& session_attributes,
+ const lttng_ust_ctl_field **next_ust_ctl_field,
+ const publish_field_fn& publish_field,
+ lst::field_location::root lookup_root,
+ lst::field_location::elements& current_field_location_elements,
+ lsu::ctl_field_quirks quirks __attribute__((unused)))
{
if (current >= end) {
- LTTNG_THROW_PROTOCOL_ERROR(
- fmt::format("End of {} array reached unexpectedly during decoding",
- typeid(*current)));
+ LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
+ "End of {} array reached unexpectedly during decoding", typeid(*current)));
}
const auto& sequence_uctl_field = *current;
if (element_uctl_type.atype != lttng_ust_ctl_atype_integer) {
LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
- "Unexpected legacy sequence element type: atype = {}, expected atype = lttng_ust_ctl_atype_integer ({})",
- element_uctl_type.atype, lttng_ust_ctl_atype_integer));
+ "Unexpected legacy sequence element type: atype = {}, expected atype = lttng_ust_ctl_atype_integer ({})",
+ element_uctl_type.atype,
+ lttng_ust_ctl_atype_integer));
}
if (length_uctl_type.atype != lttng_ust_ctl_atype_integer) {
LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
- "Unexpected legacy sequence length field type: atype = {}, expected atype = lttng_ust_ctl_atype_integer ({})",
- length_uctl_type.atype, lttng_ust_ctl_atype_integer));
+ "Unexpected legacy sequence length field type: atype = {}, expected atype = lttng_ust_ctl_atype_integer ({})",
+ length_uctl_type.atype,
+ lttng_ust_ctl_atype_integer));
}
nonstd::optional<enum lst::string_type::encoding> element_encoding;
if (element_uctl_type.atype == lttng_ust_ctl_atype_integer &&
- element_uctl_type.u.basic.integer.encoding != lttng_ust_ctl_encode_none) {
+ element_uctl_type.u.basic.integer.encoding != lttng_ust_ctl_encode_none) {
/* Element represents a text character. */
element_encoding = ust_ctl_encoding_to_string_field_encoding(
- element_uctl_type.u.basic.integer.encoding);
+ element_uctl_type.u.basic.integer.encoding);
}
- const auto length_field_name = fmt::format("_{}_length", sequence_uctl_field.name);
- auto element_type = create_integer_type_from_ust_ctl_basic_type(
- element_uctl_type, session_attributes);
- auto length_type = create_integer_type_from_ust_ctl_basic_type(
- length_uctl_type, session_attributes);
+ auto length_field_name = fmt::format("_{}_length", sequence_uctl_field.name);
+ auto element_type =
+ create_integer_type_from_ust_ctl_basic_type(element_uctl_type, session_attributes);
+ auto length_type =
+ create_integer_type_from_ust_ctl_basic_type(length_uctl_type, session_attributes);
+
+ lst::field_location::elements length_field_location_elements =
+ current_field_location_elements;
+ length_field_location_elements.emplace_back(length_field_name);
+
+ lst::field_location length_field_location{ lookup_root,
+ std::move(length_field_location_elements) };
/* Publish an implicit length field _before_ the sequence field. */
- publish_field(lttng::make_unique<lst::field>(length_field_name, std::move(length_type)));
+ publish_field(lttng::make_unique<lst::field>(std::move(length_field_name),
+ std::move(length_type)));
*next_ust_ctl_field = current + 1;
if (element_encoding) {
const auto integer_element_size =
- static_cast<const lst::integer_type&>(*element_type).size;
+ static_cast<const lst::integer_type&>(*element_type).size;
if (integer_element_size != 8) {
LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
- "Unexpected legacy array element type: integer has encoding but size is not 8: size = {}",
- integer_element_size));
+ "Unexpected legacy array element type: integer has encoding but size is not 8: size = {}",
+ integer_element_size));
}
/* Sequence is a dynamic-length string. */
- return lttng::make_unique<lst::dynamic_length_string_type>(sequence_alignment,
- *element_encoding, std::move(length_field_name));
+ return lttng::make_unique<lst::dynamic_length_string_type>(
+ sequence_alignment, *element_encoding, std::move(length_field_location));
}
return lttng::make_unique<lst::dynamic_length_array_type>(
- sequence_alignment, std::move(element_type), std::move(length_field_name));
+ sequence_alignment, std::move(element_type), std::move(length_field_location));
}
lst::type::cuptr create_sequence_nestable_type_from_ust_ctl_fields(
- const lttng_ust_ctl_field *current,
- const lttng_ust_ctl_field *end,
- const session_attributes& session_attributes,
- const lttng_ust_ctl_field **next_ust_ctl_field,
- publish_field_fn publish_field)
+ const lttng_ust_ctl_field *current,
+ const lttng_ust_ctl_field *end,
+ const session_attributes& session_attributes,
+ const lttng_ust_ctl_field **next_ust_ctl_field,
+ const publish_field_fn& publish_field,
+ const lookup_field_fn& lookup_field,
+ lst::field_location::root lookup_root,
+ lst::field_location::elements& current_field_location_elements,
+ lsu::ctl_field_quirks quirks)
{
if (current >= end) {
- LTTNG_THROW_PROTOCOL_ERROR(
- fmt::format("End of {} array reached unexpectedly during decoding",
- typeid(*current)));
+ LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
+ "End of {} array reached unexpectedly during decoding", typeid(*current)));
}
const auto& sequence_uctl_field = *current;
nonstd::optional<enum lst::string_type::encoding> element_encoding;
if (element_uctl_field.type.atype == lttng_ust_ctl_atype_integer &&
- element_uctl_field.type.u.integer.encoding != lttng_ust_ctl_encode_none) {
+ element_uctl_field.type.u.integer.encoding != lttng_ust_ctl_encode_none) {
/* Element represents a text character. */
element_encoding = ust_ctl_encoding_to_string_field_encoding(
- element_uctl_field.type.u.integer.encoding);
+ element_uctl_field.type.u.integer.encoding);
}
/* next_ust_ctl_field is updated as needed. */
- auto element_type = create_type_from_ust_ctl_fields(&element_uctl_field, end,
- session_attributes, next_ust_ctl_field, publish_field);
+ auto element_type = create_type_from_ust_ctl_fields(&element_uctl_field,
+ end,
+ session_attributes,
+ next_ust_ctl_field,
+ publish_field,
+ lookup_field,
+ lookup_root,
+ current_field_location_elements,
+ quirks);
if (lttng_strnlen(sequence_uctl_field.type.u.sequence_nestable.length_name,
- sizeof(sequence_uctl_field.type.u.sequence_nestable.length_name)) ==
- sizeof(sequence_uctl_field.type.u.sequence_nestable.length_name)) {
+ sizeof(sequence_uctl_field.type.u.sequence_nestable.length_name)) ==
+ sizeof(sequence_uctl_field.type.u.sequence_nestable.length_name)) {
LTTNG_THROW_PROTOCOL_ERROR("Sequence length field name is not null terminated");
}
+ lst::field_location::elements length_field_location_elements =
+ current_field_location_elements;
+ length_field_location_elements.emplace_back(length_field_name);
+
+ lst::field_location length_field_location{ lookup_root,
+ std::move(length_field_location_elements) };
+
+ /* Validate existence of length field (throws if not found). */
+ const auto& length_field = lookup_field(length_field_location);
+ const auto *integer_selector_field =
+ dynamic_cast<const lst::integer_type *>(&length_field.get_type());
+ if (!integer_selector_field) {
+ LTTNG_THROW_PROTOCOL_ERROR(
+ "Invalid selector field type referenced from sequence: expected integer or enumeration");
+ }
+
if (element_encoding) {
const auto integer_element_size =
- static_cast<const lst::integer_type&>(*element_type).size;
+ static_cast<const lst::integer_type&>(*element_type).size;
if (integer_element_size != 8) {
LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
- "Unexpected array element type: integer has encoding but size is not 8: size = {}",
- integer_element_size));
+ "Unexpected array element type: integer has encoding but size is not 8: size = {}",
+ integer_element_size));
}
/* Sqeuence is a dynamic-length string. */
- return lttng::make_unique<lst::dynamic_length_string_type>(sequence_alignment,
- *element_encoding, std::move(length_field_name));
+ return lttng::make_unique<lst::dynamic_length_string_type>(
+ sequence_alignment, *element_encoding, std::move(length_field_location));
}
return lttng::make_unique<lst::dynamic_length_array_type>(
- sequence_alignment, std::move(element_type), std::move(length_field_name));
+ sequence_alignment, std::move(element_type), std::move(length_field_location));
}
-lst::type::cuptr create_structure_field_from_ust_ctl_fields(const lttng_ust_ctl_field *current,
- const lttng_ust_ctl_field *end,
- const session_attributes& session_attributes __attribute__((unused)),
- const lttng_ust_ctl_field **next_ust_ctl_field)
+lst::type::cuptr
+create_structure_field_from_ust_ctl_fields(const lttng_ust_ctl_field *current,
+ const lttng_ust_ctl_field *end,
+ const session_attributes& session_attributes
+ __attribute__((unused)),
+ const lttng_ust_ctl_field **next_ust_ctl_field,
+ lsu::ctl_field_quirks quirks __attribute__((unused)))
{
if (current >= end) {
- LTTNG_THROW_PROTOCOL_ERROR(
- fmt::format("End of {} array reached unexpectedly during decoding",
- typeid(*current)));
+ LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
+ "End of {} array reached unexpectedly during decoding", typeid(*current)));
}
uint32_t field_count;
if (field_count != 0) {
LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
- "Only empty structures are supported by LTTng-UST: nr_fields = {}",
- field_count));
+ "Only empty structures are supported by LTTng-UST: nr_fields = {}",
+ field_count));
}
*next_ust_ctl_field = current + 1;
return lttng::make_unique<lst::structure_type>(alignment, lst::structure_type::fields());
}
-lst::type::cuptr create_variant_field_from_ust_ctl_fields(const lttng_ust_ctl_field *current,
- const lttng_ust_ctl_field *end,
- const session_attributes& session_attributes,
- const lttng_ust_ctl_field **next_ust_ctl_field)
+template <class VariantSelectorMappingIntegerType>
+typename lst::variant_type<VariantSelectorMappingIntegerType>::choices
+create_typed_variant_choices(const lttng_ust_ctl_field *current,
+ const lttng_ust_ctl_field *end,
+ const session_attributes& session_attributes,
+ const lttng_ust_ctl_field **next_ust_ctl_field,
+ lookup_field_fn lookup_field,
+ lst::field_location::root lookup_root,
+ lst::field_location::elements& current_field_location_elements,
+ unsigned int choice_count,
+ const lst::field& selector_field,
+ lsu::ctl_field_quirks quirks)
+{
+ typename lst::variant_type<VariantSelectorMappingIntegerType>::choices choices;
+ const auto& typed_enumeration =
+ static_cast<const lst::typed_enumeration_type<VariantSelectorMappingIntegerType>&>(
+ selector_field.get_type());
+
+ for (unsigned int i = 0; i < choice_count; i++) {
+ create_field_from_ust_ctl_fields(
+ current,
+ end,
+ session_attributes,
+ next_ust_ctl_field,
+ [&choices, typed_enumeration, &selector_field, quirks](
+ lst::field::uptr field) {
+ /*
+ * Find the enumeration mapping that matches the
+ * field's name.
+ */
+ const auto mapping_it = std::find_if(
+ typed_enumeration.mappings_->begin(),
+ typed_enumeration.mappings_->end(),
+ [&field,
+ quirks](const typename std::remove_reference<
+ decltype(typed_enumeration)>::type::mapping&
+ mapping) {
+ if (static_cast<bool>(
+ quirks &
+ lsu::ctl_field_quirks::
+ UNDERSCORE_PREFIXED_VARIANT_TAG_MAPPINGS)) {
+ /*
+ * Check if they match with
+ * a prepended underscore
+ * and, if not, perform the
+ * regular check.
+ */
+ if ((std::string("_") + field->name) ==
+ mapping.name) {
+ return true;
+ }
+ }
+
+ return mapping.name == field->name;
+ });
+
+ if (mapping_it == typed_enumeration.mappings_->end()) {
+ LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
+ "Invalid variant choice: `{}` does not match any mapping in `{}` enumeration",
+ field->name,
+ selector_field.name));
+ }
+
+ choices.emplace_back(*mapping_it, field->move_type());
+ },
+ lookup_field,
+ lookup_root,
+ current_field_location_elements,
+ quirks);
+
+ current = *next_ust_ctl_field;
+ }
+
+ return choices;
+}
+
+lst::type::cuptr create_variant_field_from_ust_ctl_fields(
+ const lttng_ust_ctl_field *current,
+ const lttng_ust_ctl_field *end,
+ const session_attributes& session_attributes,
+ const lttng_ust_ctl_field **next_ust_ctl_field,
+ const lookup_field_fn& lookup_field,
+ lst::field_location::root lookup_root,
+ lst::field_location::elements& current_field_location_elements,
+ lsu::ctl_field_quirks quirks)
{
if (current >= end) {
- LTTNG_THROW_PROTOCOL_ERROR(
- fmt::format("End of {} array reached unexpectedly during decoding",
- typeid(*current)));
+ LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
+ "End of {} array reached unexpectedly during decoding", typeid(*current)));
}
const auto& variant_uctl_field = *current;
tag_name = variant_uctl_field.type.u.variant_nestable.tag_name;
}
- /* Choices follow. next_ust_ctl_field is updated as needed. */
- lst::variant_type::choices choices;
- for (unsigned int i = 0; i < choice_count; i++) {
- create_field_from_ust_ctl_fields(current, end, session_attributes,
- next_ust_ctl_field, [&choices](lst::field::cuptr field) {
- choices.emplace_back(std::move(field));
- });
+ lst::field_location::elements selector_field_location_elements =
+ current_field_location_elements;
+ selector_field_location_elements.emplace_back(tag_name);
- current = *next_ust_ctl_field;
+ lst::field_location selector_field_location{ lookup_root,
+ std::move(selector_field_location_elements) };
+
+ /* Validate existence of selector field (throws if not found). */
+ const auto& selector_field = lookup_field(selector_field_location);
+ const auto *enumeration_selector_type =
+ dynamic_cast<const lst::enumeration_type *>(&selector_field.get_type());
+ if (!enumeration_selector_type) {
+ LTTNG_THROW_PROTOCOL_ERROR(
+ "Invalid selector field type referenced from variant: expected enumeration");
}
- return lttng::make_unique<lst::variant_type>(alignment, tag_name, std::move(choices));
+ const bool selector_is_signed = enumeration_selector_type->signedness_ ==
+ lst::integer_type::signedness::SIGNED;
+
+ /* Choices follow. next_ust_ctl_field is updated as needed. */
+ if (selector_is_signed) {
+ lst::variant_type<lst::signed_enumeration_type::mapping::range_t::range_integer_t>::
+ choices choices = create_typed_variant_choices<int64_t>(
+ current,
+ end,
+ session_attributes,
+ next_ust_ctl_field,
+ lookup_field,
+ lookup_root,
+ current_field_location_elements,
+ choice_count,
+ selector_field,
+ quirks);
+
+ return lttng::make_unique<lst::variant_type<int64_t>>(
+ alignment, std::move(selector_field_location), std::move(choices));
+ } else {
+ lst::variant_type<
+ lst::unsigned_enumeration_type::mapping::range_t::range_integer_t>::choices
+ choices = create_typed_variant_choices<uint64_t>(
+ current,
+ end,
+ session_attributes,
+ next_ust_ctl_field,
+ lookup_field,
+ lookup_root,
+ current_field_location_elements,
+ choice_count,
+ selector_field,
+ quirks);
+
+ return lttng::make_unique<lst::variant_type<uint64_t>>(
+ alignment, std::move(selector_field_location), std::move(choices));
+ }
}
-lst::type::cuptr create_type_from_ust_ctl_fields(const lttng_ust_ctl_field *current,
- const lttng_ust_ctl_field *end,
- const session_attributes& session_attributes,
- const lttng_ust_ctl_field **next_ust_ctl_field,
- publish_field_fn publish_field)
+lst::type::cuptr
+create_type_from_ust_ctl_fields(const lttng_ust_ctl_field *current,
+ const lttng_ust_ctl_field *end,
+ const session_attributes& session_attributes,
+ const lttng_ust_ctl_field **next_ust_ctl_field,
+ const publish_field_fn& publish_field,
+ const lookup_field_fn& lookup_field,
+ lst::field_location::root lookup_root,
+ lst::field_location::elements& current_field_location_elements,
+ lsu::ctl_field_quirks quirks)
{
switch (current->type.atype) {
case lttng_ust_ctl_atype_integer:
return create_integer_type_from_ust_ctl_fields(
- current, end, session_attributes, next_ust_ctl_field);
+ current, end, session_attributes, next_ust_ctl_field, quirks);
case lttng_ust_ctl_atype_enum:
case lttng_ust_ctl_atype_enum_nestable:
return create_enumeration_type_from_ust_ctl_fields(
- current, end, session_attributes, next_ust_ctl_field);
+ current, end, session_attributes, next_ust_ctl_field, quirks);
case lttng_ust_ctl_atype_float:
return create_floating_point_type_from_ust_ctl_fields(
- current, end, session_attributes, next_ust_ctl_field);
+ current, end, session_attributes, next_ust_ctl_field, quirks);
case lttng_ust_ctl_atype_string:
return create_string_type_from_ust_ctl_fields(
- current, end, session_attributes, next_ust_ctl_field);
+ current, end, session_attributes, next_ust_ctl_field, quirks);
case lttng_ust_ctl_atype_array:
- return create_array_type_from_ust_ctl_fields(current, end, session_attributes,
- next_ust_ctl_field);
+ return create_array_type_from_ust_ctl_fields(
+ current, end, session_attributes, next_ust_ctl_field, quirks);
case lttng_ust_ctl_atype_array_nestable:
- return create_array_nestable_type_from_ust_ctl_fields(current, end,
- session_attributes, next_ust_ctl_field, publish_field);
+ return create_array_nestable_type_from_ust_ctl_fields(
+ current,
+ end,
+ session_attributes,
+ next_ust_ctl_field,
+ publish_field,
+ lookup_field,
+ lookup_root,
+ current_field_location_elements,
+ quirks);
case lttng_ust_ctl_atype_sequence:
- return create_sequence_type_from_ust_ctl_fields(current, end, session_attributes,
- next_ust_ctl_field, publish_field);
+ return create_sequence_type_from_ust_ctl_fields(current,
+ end,
+ session_attributes,
+ next_ust_ctl_field,
+ publish_field,
+ lookup_root,
+ current_field_location_elements,
+ quirks);
case lttng_ust_ctl_atype_sequence_nestable:
- return create_sequence_nestable_type_from_ust_ctl_fields(current, end,
- session_attributes, next_ust_ctl_field, publish_field);
+ return create_sequence_nestable_type_from_ust_ctl_fields(
+ current,
+ end,
+ session_attributes,
+ next_ust_ctl_field,
+ publish_field,
+ lookup_field,
+ lookup_root,
+ current_field_location_elements,
+ quirks);
case lttng_ust_ctl_atype_struct:
case lttng_ust_ctl_atype_struct_nestable:
return create_structure_field_from_ust_ctl_fields(
- current, end, session_attributes, next_ust_ctl_field);
+ current, end, session_attributes, next_ust_ctl_field, quirks);
case lttng_ust_ctl_atype_variant:
case lttng_ust_ctl_atype_variant_nestable:
- return create_variant_field_from_ust_ctl_fields(
- current, end, session_attributes, next_ust_ctl_field);
+ return create_variant_field_from_ust_ctl_fields(current,
+ end,
+ session_attributes,
+ next_ust_ctl_field,
+ lookup_field,
+ lookup_root,
+ current_field_location_elements,
+ quirks);
default:
- LTTNG_THROW_PROTOCOL_ERROR(fmt::format(
- "Unknown {} value `{}` encountered while converting {} to {}",
- typeid(current->type.atype), current->type.atype, typeid(*current),
- typeid(lst::type::cuptr::element_type)));
+ LTTNG_THROW_PROTOCOL_ERROR(
+ fmt::format("Unknown {} value `{}` encountered while converting {} to {}",
+ typeid(current->type.atype),
+ current->type.atype,
+ typeid(*current),
+ typeid(lst::type::cuptr::element_type)));
}
}
void create_field_from_ust_ctl_fields(const lttng_ust_ctl_field *current,
- const lttng_ust_ctl_field *end,
- const session_attributes& session_attributes,
- const lttng_ust_ctl_field **next_ust_ctl_field,
- publish_field_fn publish_field)
+ const lttng_ust_ctl_field *end,
+ const session_attributes& session_attributes,
+ const lttng_ust_ctl_field **next_ust_ctl_field,
+ const publish_field_fn& publish_field,
+ const lookup_field_fn& lookup_field,
+ lst::field_location::root lookup_root,
+ lst::field_location::elements& current_field_location_elements,
+ lsu::ctl_field_quirks quirks)
{
LTTNG_ASSERT(current < end);
if (lttng_strnlen(current->name, sizeof(current->name)) == sizeof(current->name)) {
LTTNG_THROW_PROTOCOL_ERROR(
- fmt::format("Name of {} is not null-terminated", typeid(*current)));
+ fmt::format("Name of {} is not null-terminated", typeid(*current)));
+ }
+
+ publish_field(lttng::make_unique<lst::field>(
+ current->name,
+ create_type_from_ust_ctl_fields(current,
+ end,
+ session_attributes,
+ next_ust_ctl_field,
+ publish_field,
+ lookup_field,
+ lookup_root,
+ current_field_location_elements,
+ quirks)));
+}
+
+std::vector<lst::field::cuptr>::iterator
+lookup_field_in_vector(std::vector<lst::field::cuptr>& fields, const lst::field_location& location)
+{
+ if (location.elements_.size() != 1) {
+ LTTNG_THROW_ERROR(fmt::format(
+ "Unexpected field location received during field look-up: location = {}",
+ location));
+ }
+
+ /*
+ * In the context of fields received from LTTng-UST, field
+ * look-up is extremely naive as the protocol can only
+ * express empty structures. It is safe to assume that
+ * location has a depth of 1 and directly refers to a field
+ * in the 'fields' vector.
+ */
+ const auto field_it =
+ std::find_if(fields.begin(), fields.end(), [location](lst::field::cuptr& field) {
+ return field->name == location.elements_[0];
+ });
+
+ if (field_it == fields.end()) {
+ LTTNG_THROW_PROTOCOL_ERROR(
+ fmt::format("Failed to look-up field: location = {}", location));
}
- publish_field(lttng::make_unique<lst::field>(current->name,
- create_type_from_ust_ctl_fields(current, end, session_attributes,
- next_ust_ctl_field, publish_field)));
+ return field_it;
}
/*
*
* Always returns a new field, throws on error.
*/
-std::vector<lst::field::cuptr> create_fields_from_ust_ctl_fields(
- const lsu::registry_session& session,
- const lttng_ust_ctl_field *current,
- const lttng_ust_ctl_field *end)
+std::vector<lst::field::cuptr>
+create_fields_from_ust_ctl_fields(const lsu::registry_session& session,
+ const lttng_ust_ctl_field *current,
+ const lttng_ust_ctl_field *end,
+ lst::field_location::root lookup_root,
+ lsu::ctl_field_quirks quirks)
{
std::vector<lst::field::cuptr> fields;
const auto trace_native_byte_order = session.abi.byte_order;
const session_attributes session_attributes{
- [&session](const char *enum_name, uint64_t enum_id) {
- return ust_registry_lookup_enum_by_id(&session, enum_name, enum_id);
- },
- trace_native_byte_order};
+ [&session](const char *enum_name, uint64_t enum_id) {
+ return session.enumeration(enum_name, enum_id);
+ },
+ trace_native_byte_order
+ };
+ /* Location of field being created. */
+ lst::field_location::elements current_field_location_elements;
while (current < end) {
auto *next_field = current;
* The lambda allows the factory functions to push as many fields as
* needed depending on the decoded field's type.
*/
- create_field_from_ust_ctl_fields(current, end, session_attributes, &next_field,
- [&fields](lst::field::cuptr field) {
- fields.emplace_back(std::move(field));
- });
+ create_field_from_ust_ctl_fields(
+ current,
+ end,
+ session_attributes,
+ &next_field,
+ [&fields](lst::field::cuptr field) {
+ /* Publishing a field simply adds it to the converted
+ * fields. */
+ fields.emplace_back(std::move(field));
+ },
+ [&fields](const lst::field_location& location)
+ -> lookup_field_fn::result_type {
+ /* Resolve location to a previously-constructed field. */
+ return **lookup_field_in_vector(fields, location);
+ },
+ lookup_root,
+ current_field_location_elements,
+ quirks);
current = next_field;
}
}
} /* namespace */
-std::vector<lst::field::cuptr> lsu::create_trace_fields_from_ust_ctl_fields(
- const lsu::registry_session& session,
- const lttng_ust_ctl_field *fields,
- std::size_t field_count)
+std::vector<lst::field::cuptr>
+lsu::create_trace_fields_from_ust_ctl_fields(const lsu::registry_session& session,
+ const lttng_ust_ctl_field *fields,
+ std::size_t field_count,
+ lst::field_location::root lookup_root,
+ lsu::ctl_field_quirks quirks)
{
- return create_fields_from_ust_ctl_fields(session, fields, fields + field_count);
+ return create_fields_from_ust_ctl_fields(
+ session, fields, fields + field_count, lookup_root, quirks);
}