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cpp-common/bt2: `bt2::internal::SharedObj` -> `bt2::SharedObj`
[babeltrace.git] / src / cpp-common / bt2 / trace-ir.hpp
diff --git a/src/cpp-common/bt2/trace-ir.hpp b/src/cpp-common/bt2/trace-ir.hpp
index 33f77105e742c2fa22ed367aef41299f4da596ce..293e99546afa2098b837d1a3d3ae30cedd1f14fd 100644 (file)
--- a/src/cpp-common/bt2/trace-ir.hpp
+++ b/src/cpp-common/bt2/trace-ir.hpp
@@ -7,19 +7,21 @@
 #ifndef BABELTRACE_CPP_COMMON_BT2_TRACE_IR_HPP
 #define BABELTRACE_CPP_COMMON_BT2_TRACE_IR_HPP
 
-#include <type_traits>
 #include <cstdint>
+#include <type_traits>
+
 #include <babeltrace2/babeltrace.h>
 
-#include "internal/borrowed-obj.hpp"
 #include "cpp-common/optional.hpp"
 #include "cpp-common/string_view.hpp"
+
+#include "borrowed-object.hpp"
 #include "clock-class.hpp"
-#include "clock-snapshot.hpp"
 #include "field-class.hpp"
 #include "field.hpp"
-#include "value.hpp"
 #include "internal/utils.hpp"
+#include "shared-obj.hpp"
+#include "value.hpp"
 
 namespace bt2 {
 
@@ -122,11 +124,11 @@ struct CommonEventSpec<const bt_event> final
 } /* namespace internal */
 
 template <typename LibObjT>
-class CommonEvent final : public internal::BorrowedObj<LibObjT>
+class CommonEvent final : public BorrowedObject<LibObjT>
 {
 private:
-    using typename internal::BorrowedObj<LibObjT>::_ThisBorrowedObj;
-    using typename internal::BorrowedObj<LibObjT>::_LibObjPtr;
+    using typename BorrowedObject<LibObjT>::_ThisBorrowedObject;
+    using typename BorrowedObject<LibObjT>::_LibObjPtr;
     using _ConstSpec = internal::CommonEventSpec<const bt_event>;
     using _Spec = internal::CommonEventSpec<LibObjT>;
 
@@ -146,19 +148,19 @@ public:
                                             CommonEventClass<const bt_event_class>,
                                             CommonEventClass<bt_event_class>>::type;
 
-    explicit CommonEvent(const _LibObjPtr libObjPtr) noexcept : _ThisBorrowedObj {libObjPtr}
+    explicit CommonEvent(const _LibObjPtr libObjPtr) noexcept : _ThisBorrowedObject {libObjPtr}
     {
     }
 
     template <typename OtherLibObjT>
-    CommonEvent(const CommonEvent<OtherLibObjT>& event) noexcept : _ThisBorrowedObj {event}
+    CommonEvent(const CommonEvent<OtherLibObjT> event) noexcept : _ThisBorrowedObject {event}
     {
     }
 
     template <typename OtherLibObjT>
-    CommonEvent<LibObjT>& operator=(const CommonEvent<OtherLibObjT>& event) noexcept
+    CommonEvent<LibObjT>& operator=(const CommonEvent<OtherLibObjT> event) noexcept
     {
-        _ThisBorrowedObj::operator=(event);
+        _ThisBorrowedObject::operator=(event);
         return *this;
     }
 
@@ -241,6 +243,22 @@ using ConstEvent = CommonEvent<const bt_event>;
 
 namespace internal {
 
+struct EventTypeDescr
+{
+    using Const = ConstEvent;
+    using NonConst = Event;
+};
+
+template <>
+struct TypeDescr<Event> : public EventTypeDescr
+{
+};
+
+template <>
+struct TypeDescr<ConstEvent> : public EventTypeDescr
+{
+};
+
 struct PacketRefFuncs final
 {
     static void get(const bt_packet * const libObjPtr)
@@ -290,11 +308,11 @@ struct CommonPacketSpec<const bt_packet> final
 } /* namespace internal */
 
 template <typename LibObjT>
-class CommonPacket final : public internal::BorrowedObj<LibObjT>
+class CommonPacket final : public BorrowedObject<LibObjT>
 {
 private:
-    using typename internal::BorrowedObj<LibObjT>::_ThisBorrowedObj;
-    using typename internal::BorrowedObj<LibObjT>::_LibObjPtr;
+    using typename BorrowedObject<LibObjT>::_ThisBorrowedObject;
+    using typename BorrowedObject<LibObjT>::_LibObjPtr;
     using _ConstSpec = internal::CommonPacketSpec<const bt_packet>;
     using _Spec = internal::CommonPacketSpec<LibObjT>;
     using _ThisCommonPacket = CommonPacket<LibObjT>;
@@ -307,21 +325,21 @@ private:
                                                       ConstStructureField, StructureField>::type;
 
 public:
-    using Shared = internal::SharedObj<_ThisCommonPacket, LibObjT, internal::PacketRefFuncs>;
+    using Shared = SharedObj<_ThisCommonPacket, LibObjT, internal::PacketRefFuncs>;
 
-    explicit CommonPacket(const _LibObjPtr libObjPtr) noexcept : _ThisBorrowedObj {libObjPtr}
+    explicit CommonPacket(const _LibObjPtr libObjPtr) noexcept : _ThisBorrowedObject {libObjPtr}
     {
     }
 
     template <typename OtherLibObjT>
-    CommonPacket(const CommonPacket<OtherLibObjT>& packet) noexcept : _ThisBorrowedObj {packet}
+    CommonPacket(const CommonPacket<OtherLibObjT> packet) noexcept : _ThisBorrowedObject {packet}
     {
     }
 
     template <typename OtherLibObjT>
-    _ThisCommonPacket& operator=(const CommonPacket<OtherLibObjT>& packet) noexcept
+    _ThisCommonPacket& operator=(const CommonPacket<OtherLibObjT> packet) noexcept
     {
-        _ThisBorrowedObj::operator=(packet);
+        _ThisBorrowedObject::operator=(packet);
         return *this;
     }
 
@@ -352,13 +370,33 @@ public:
 
     Shared shared() const noexcept
     {
-        return Shared {*this};
+        return Shared::createWithRef(*this);
     }
 };
 
 using Packet = CommonPacket<bt_packet>;
 using ConstPacket = CommonPacket<const bt_packet>;
 
+namespace internal {
+
+struct PacketTypeDescr
+{
+    using Const = ConstPacket;
+    using NonConst = Packet;
+};
+
+template <>
+struct TypeDescr<Packet> : public PacketTypeDescr
+{
+};
+
+template <>
+struct TypeDescr<ConstPacket> : public PacketTypeDescr
+{
+};
+
+} /* namespace internal */
+
 template <typename LibObjT>
 nonstd::optional<ConstPacket> CommonEvent<LibObjT>::packet() const noexcept
 {
@@ -444,11 +482,11 @@ struct CommonStreamSpec<const bt_stream> final
 } /* namespace internal */
 
 template <typename LibObjT>
-class CommonStream final : public internal::BorrowedObj<LibObjT>
+class CommonStream final : public BorrowedObject<LibObjT>
 {
 private:
-    using typename internal::BorrowedObj<LibObjT>::_ThisBorrowedObj;
-    using typename internal::BorrowedObj<LibObjT>::_LibObjPtr;
+    using typename BorrowedObject<LibObjT>::_ThisBorrowedObject;
+    using typename BorrowedObject<LibObjT>::_LibObjPtr;
     using _ConstSpec = internal::CommonStreamSpec<const bt_stream>;
     using _Spec = internal::CommonStreamSpec<LibObjT>;
     using _ThisCommonStream = CommonStream<LibObjT>;
@@ -458,7 +496,7 @@ private:
                                   CommonTrace<bt_trace>>::type;
 
 public:
-    using Shared = internal::SharedObj<_ThisCommonStream, LibObjT, internal::StreamRefFuncs>;
+    using Shared = SharedObj<_ThisCommonStream, LibObjT, internal::StreamRefFuncs>;
 
     using Class = typename std::conditional<std::is_const<LibObjT>::value,
                                             CommonStreamClass<const bt_stream_class>,
@@ -467,19 +505,19 @@ public:
     using UserAttributes =
         typename std::conditional<std::is_const<LibObjT>::value, ConstMapValue, MapValue>::type;
 
-    explicit CommonStream(const _LibObjPtr libObjPtr) noexcept : _ThisBorrowedObj {libObjPtr}
+    explicit CommonStream(const _LibObjPtr libObjPtr) noexcept : _ThisBorrowedObject {libObjPtr}
     {
     }
 
     template <typename OtherLibObjT>
-    CommonStream(const CommonStream<OtherLibObjT>& stream) noexcept : _ThisBorrowedObj {stream}
+    CommonStream(const CommonStream<OtherLibObjT> stream) noexcept : _ThisBorrowedObject {stream}
     {
     }
 
     template <typename OtherLibObjT>
-    _ThisCommonStream& operator=(const CommonStream<OtherLibObjT>& stream) noexcept
+    _ThisCommonStream& operator=(const CommonStream<OtherLibObjT> stream) noexcept
     {
-        _ThisBorrowedObj::operator=(stream);
+        _ThisBorrowedObject::operator=(stream);
         return *this;
     }
 
@@ -490,7 +528,7 @@ public:
         const auto libObjPtr = bt_packet_create(this->libObjPtr());
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return Packet::Shared {Packet {libObjPtr}};
+        return Packet::Shared::createWithoutRef(libObjPtr);
     }
 
     CommonStreamClass<const bt_stream_class> cls() const noexcept;
@@ -510,7 +548,7 @@ public:
         const auto status = bt_stream_set_name(this->libObjPtr(), name);
 
         if (status == BT_STREAM_SET_NAME_STATUS_MEMORY_ERROR) {
-            throw LibMemoryError {};
+            throw MemoryError {};
         }
     }
 
@@ -531,7 +569,7 @@ public:
     }
 
     template <typename LibValT>
-    void userAttributes(const CommonMapValue<LibValT>& userAttrs)
+    void userAttributes(const CommonMapValue<LibValT> userAttrs)
     {
         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
 
@@ -550,13 +588,33 @@ public:
 
     Shared shared() const noexcept
     {
-        return Shared {*this};
+        return Shared::createWithRef(*this);
     }
 };
 
 using Stream = CommonStream<bt_stream>;
 using ConstStream = CommonStream<const bt_stream>;
 
+namespace internal {
+
+struct StreamTypeDescr
+{
+    using Const = ConstStream;
+    using NonConst = Stream;
+};
+
+template <>
+struct TypeDescr<Stream> : public StreamTypeDescr
+{
+};
+
+template <>
+struct TypeDescr<ConstStream> : public StreamTypeDescr
+{
+};
+
+} /* namespace internal */
+
 template <typename LibObjT>
 ConstStream CommonEvent<LibObjT>::stream() const noexcept
 {
@@ -654,14 +712,14 @@ struct CommonTraceSpec<const bt_trace> final
 } /* namespace internal */
 
 template <typename LibObjT>
-class CommonTrace final : public internal::BorrowedObj<LibObjT>
+class CommonTrace final : public BorrowedObject<LibObjT>
 {
     /* Allow instantiate() to call `trace.libObjPtr()` */
     friend class CommonStreamClass<bt_stream_class>;
 
 private:
-    using typename internal::BorrowedObj<LibObjT>::_ThisBorrowedObj;
-    using typename internal::BorrowedObj<LibObjT>::_LibObjPtr;
+    using typename BorrowedObject<LibObjT>::_ThisBorrowedObject;
+    using typename BorrowedObject<LibObjT>::_LibObjPtr;
     using _ConstSpec = internal::CommonTraceSpec<const bt_trace>;
     using _Spec = internal::CommonTraceSpec<LibObjT>;
     using _ThisCommonTrace = CommonTrace<LibObjT>;
@@ -671,7 +729,7 @@ private:
                                   CommonStream<bt_stream>>::type;
 
 public:
-    using Shared = internal::SharedObj<_ThisCommonTrace, LibObjT, internal::TraceRefFuncs>;
+    using Shared = SharedObj<_ThisCommonTrace, LibObjT, internal::TraceRefFuncs>;
 
     using Class = typename std::conditional<std::is_const<LibObjT>::value,
                                             CommonTraceClass<const bt_trace_class>,
@@ -686,19 +744,19 @@ public:
         ConstValue value;
     };
 
-    explicit CommonTrace(const _LibObjPtr libObjPtr) noexcept : _ThisBorrowedObj {libObjPtr}
+    explicit CommonTrace(const _LibObjPtr libObjPtr) noexcept : _ThisBorrowedObject {libObjPtr}
     {
     }
 
     template <typename OtherLibObjT>
-    CommonTrace(const CommonTrace<OtherLibObjT>& trace) noexcept : _ThisBorrowedObj {trace}
+    CommonTrace(const CommonTrace<OtherLibObjT> trace) noexcept : _ThisBorrowedObject {trace}
     {
     }
 
     template <typename OtherLibObjT>
-    _ThisCommonTrace& operator=(const CommonTrace<OtherLibObjT>& trace) noexcept
+    _ThisCommonTrace& operator=(const CommonTrace<OtherLibObjT> trace) noexcept
     {
-        _ThisBorrowedObj::operator=(trace);
+        _ThisBorrowedObject::operator=(trace);
         return *this;
     }
 
@@ -712,7 +770,7 @@ public:
         const auto status = bt_trace_set_name(this->libObjPtr(), name);
 
         if (status == BT_TRACE_SET_NAME_STATUS_MEMORY_ERROR) {
-            throw LibMemoryError {};
+            throw MemoryError {};
         }
     }
 
@@ -732,9 +790,9 @@ public:
         return nonstd::nullopt;
     }
 
-    void uuid(const std::uint8_t * const uuid) noexcept
+    void uuid(const bt2_common::UuidView& uuid) noexcept
     {
-        bt_trace_set_uuid(this->libObjPtr(), uuid);
+        bt_trace_set_uuid(this->libObjPtr(), uuid.begin());
     }
 
     nonstd::optional<bt2_common::UuidView> uuid() const noexcept
@@ -792,7 +850,7 @@ public:
         const auto status = bt_trace_set_environment_entry_integer(this->libObjPtr(), name, val);
 
         if (status == BT_TRACE_SET_ENVIRONMENT_ENTRY_STATUS_MEMORY_ERROR) {
-            throw LibMemoryError {};
+            throw MemoryError {};
         }
     }
 
@@ -808,7 +866,7 @@ public:
         const auto status = bt_trace_set_environment_entry_string(this->libObjPtr(), name, val);
 
         if (status == BT_TRACE_SET_ENVIRONMENT_ENTRY_STATUS_MEMORY_ERROR) {
-            throw LibMemoryError {};
+            throw MemoryError {};
         }
     }
 
@@ -860,7 +918,7 @@ public:
     }
 
     template <typename LibValT>
-    void userAttributes(const CommonMapValue<LibValT>& userAttrs)
+    void userAttributes(const CommonMapValue<LibValT> userAttrs)
     {
         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
 
@@ -879,13 +937,33 @@ public:
 
     Shared shared() const noexcept
     {
-        return Shared {*this};
+        return Shared::createWithRef(*this);
     }
 };
 
 using Trace = CommonTrace<bt_trace>;
 using ConstTrace = CommonTrace<const bt_trace>;
 
+namespace internal {
+
+struct TraceTypeDescr
+{
+    using Const = ConstTrace;
+    using NonConst = Trace;
+};
+
+template <>
+struct TypeDescr<Trace> : public TraceTypeDescr
+{
+};
+
+template <>
+struct TypeDescr<ConstTrace> : public TraceTypeDescr
+{
+};
+
+} /* namespace internal */
+
 template <typename LibObjT>
 ConstTrace CommonStream<LibObjT>::trace() const noexcept
 {
@@ -970,11 +1048,11 @@ struct CommonEventClassSpec<const bt_event_class> final
 } /* namespace internal */
 
 template <typename LibObjT>
-class CommonEventClass final : public internal::BorrowedObj<LibObjT>
+class CommonEventClass final : public BorrowedObject<LibObjT>
 {
 private:
-    using typename internal::BorrowedObj<LibObjT>::_ThisBorrowedObj;
-    using typename internal::BorrowedObj<LibObjT>::_LibObjPtr;
+    using typename BorrowedObject<LibObjT>::_ThisBorrowedObject;
+    using typename BorrowedObject<LibObjT>::_LibObjPtr;
     using _ConstSpec = internal::CommonEventClassSpec<const bt_event_class>;
     using _Spec = internal::CommonEventClassSpec<LibObjT>;
     using _ThisCommonEventClass = CommonEventClass<LibObjT>;
@@ -988,8 +1066,7 @@ private:
                                   StructureFieldClass>::type;
 
 public:
-    using Shared =
-        internal::SharedObj<_ThisCommonEventClass, LibObjT, internal::EventClassRefFuncs>;
+    using Shared = SharedObj<_ThisCommonEventClass, LibObjT, internal::EventClassRefFuncs>;
 
     using UserAttributes =
         typename std::conditional<std::is_const<LibObjT>::value, ConstMapValue, MapValue>::type;
@@ -1013,20 +1090,20 @@ public:
         DEBUG = BT_EVENT_CLASS_LOG_LEVEL_DEBUG,
     };
 
-    explicit CommonEventClass(const _LibObjPtr libObjPtr) noexcept : _ThisBorrowedObj {libObjPtr}
+    explicit CommonEventClass(const _LibObjPtr libObjPtr) noexcept : _ThisBorrowedObject {libObjPtr}
     {
     }
 
     template <typename OtherLibObjT>
-    CommonEventClass(const CommonEventClass<OtherLibObjT>& eventClass) noexcept :
-        _ThisBorrowedObj {eventClass}
+    CommonEventClass(const CommonEventClass<OtherLibObjT> eventClass) noexcept :
+        _ThisBorrowedObject {eventClass}
     {
     }
 
     template <typename OtherLibObjT>
-    _ThisCommonEventClass& operator=(const CommonEventClass<OtherLibObjT>& eventClass) noexcept
+    _ThisCommonEventClass& operator=(const CommonEventClass<OtherLibObjT> eventClass) noexcept
     {
-        _ThisBorrowedObj::operator=(eventClass);
+        _ThisBorrowedObject::operator=(eventClass);
         return *this;
     }
 
@@ -1045,7 +1122,7 @@ public:
         const auto status = bt_event_class_set_name(this->libObjPtr(), name);
 
         if (status == BT_EVENT_CLASS_SET_NAME_STATUS_MEMORY_ERROR) {
-            throw LibMemoryError {};
+            throw MemoryError {};
         }
     }
 
@@ -1092,7 +1169,7 @@ public:
         const auto status = bt_event_class_set_emf_uri(this->libObjPtr(), emfUri);
 
         if (status == BT_EVENT_CLASS_SET_EMF_URI_STATUS_MEMORY_ERROR) {
-            throw LibMemoryError {};
+            throw MemoryError {};
         }
     }
 
@@ -1112,7 +1189,7 @@ public:
         return nonstd::nullopt;
     }
 
-    void payloadFieldClass(const StructureFieldClass& fc)
+    void payloadFieldClass(const StructureFieldClass fc)
     {
         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
 
@@ -1120,7 +1197,7 @@ public:
             bt_event_class_set_payload_field_class(this->libObjPtr(), fc.libObjPtr());
 
         if (status == BT_EVENT_CLASS_SET_FIELD_CLASS_STATUS_MEMORY_ERROR) {
-            throw LibMemoryError {};
+            throw MemoryError {};
         }
     }
 
@@ -1146,7 +1223,7 @@ public:
         return nonstd::nullopt;
     }
 
-    void specificContextFieldClass(const StructureFieldClass& fc)
+    void specificContextFieldClass(const StructureFieldClass fc)
     {
         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
 
@@ -1154,7 +1231,7 @@ public:
             bt_event_class_set_specific_context_field_class(this->libObjPtr(), fc.libObjPtr());
 
         if (status == BT_EVENT_CLASS_SET_FIELD_CLASS_STATUS_MEMORY_ERROR) {
-            throw LibMemoryError {};
+            throw MemoryError {};
         }
     }
 
@@ -1181,7 +1258,7 @@ public:
     }
 
     template <typename LibValT>
-    void userAttributes(const CommonMapValue<LibValT>& userAttrs)
+    void userAttributes(const CommonMapValue<LibValT> userAttrs)
     {
         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
 
@@ -1200,13 +1277,33 @@ public:
 
     Shared shared() const noexcept
     {
-        return Shared {*this};
+        return Shared::createWithRef(*this);
     }
 };
 
 using EventClass = CommonEventClass<bt_event_class>;
 using ConstEventClass = CommonEventClass<const bt_event_class>;
 
+namespace internal {
+
+struct EventClassTypeDescr
+{
+    using Const = ConstEventClass;
+    using NonConst = EventClass;
+};
+
+template <>
+struct TypeDescr<EventClass> : public EventClassTypeDescr
+{
+};
+
+template <>
+struct TypeDescr<ConstEventClass> : public EventClassTypeDescr
+{
+};
+
+} /* namespace internal */
+
 template <typename LibObjT>
 ConstEventClass CommonEvent<LibObjT>::cls() const noexcept
 {
@@ -1326,11 +1423,11 @@ struct CommonStreamClassSpec<const bt_stream_class> final
 } /* namespace internal */
 
 template <typename LibObjT>
-class CommonStreamClass final : public internal::BorrowedObj<LibObjT>
+class CommonStreamClass final : public BorrowedObject<LibObjT>
 {
 private:
-    using typename internal::BorrowedObj<LibObjT>::_ThisBorrowedObj;
-    using typename internal::BorrowedObj<LibObjT>::_LibObjPtr;
+    using typename BorrowedObject<LibObjT>::_ThisBorrowedObject;
+    using typename BorrowedObject<LibObjT>::_LibObjPtr;
     using _ConstSpec = internal::CommonStreamClassSpec<const bt_stream_class>;
     using _Spec = internal::CommonStreamClassSpec<LibObjT>;
     using _ThisCommonStreamClass = CommonStreamClass<LibObjT>;
@@ -1351,47 +1448,47 @@ private:
         typename std::conditional<std::is_const<LibObjT>::value, ConstClockClass, ClockClass>::type;
 
 public:
-    using Shared =
-        internal::SharedObj<_ThisCommonStreamClass, LibObjT, internal::StreamClassRefFuncs>;
+    using Shared = SharedObj<_ThisCommonStreamClass, LibObjT, internal::StreamClassRefFuncs>;
 
     using UserAttributes =
         typename std::conditional<std::is_const<LibObjT>::value, ConstMapValue, MapValue>::type;
 
-    explicit CommonStreamClass(const _LibObjPtr libObjPtr) noexcept : _ThisBorrowedObj {libObjPtr}
+    explicit CommonStreamClass(const _LibObjPtr libObjPtr) noexcept :
+        _ThisBorrowedObject {libObjPtr}
     {
     }
 
     template <typename OtherLibObjT>
-    CommonStreamClass(const CommonStreamClass<OtherLibObjT>& streamClass) noexcept :
-        _ThisBorrowedObj {streamClass}
+    CommonStreamClass(const CommonStreamClass<OtherLibObjT> streamClass) noexcept :
+        _ThisBorrowedObject {streamClass}
     {
     }
 
     template <typename OtherLibObjT>
-    _ThisCommonStreamClass& operator=(const CommonStreamClass<OtherLibObjT>& streamClass) noexcept
+    _ThisCommonStreamClass& operator=(const CommonStreamClass<OtherLibObjT> streamClass) noexcept
     {
-        _ThisBorrowedObj::operator=(streamClass);
+        _ThisBorrowedObject::operator=(streamClass);
         return *this;
     }
 
-    Stream::Shared instantiate(const Trace& trace)
+    Stream::Shared instantiate(const Trace trace)
     {
         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
 
         const auto libObjPtr = bt_stream_create(this->libObjPtr(), trace.libObjPtr());
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return Stream::Shared {Stream {libObjPtr}};
+        return Stream::Shared::createWithoutRef(libObjPtr);
     }
 
-    Stream::Shared instantiate(const Trace& trace, const std::uint64_t id)
+    Stream::Shared instantiate(const Trace trace, const std::uint64_t id)
     {
         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
 
         const auto libObjPtr = bt_stream_create_with_id(this->libObjPtr(), trace.libObjPtr(), id);
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return Stream::Shared {Stream {libObjPtr}};
+        return Stream::Shared::createWithoutRef(libObjPtr);
     }
 
     EventClass::Shared createEventClass()
@@ -1401,7 +1498,7 @@ public:
         const auto libObjPtr = bt_event_class_create(this->libObjPtr());
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return EventClass::Shared {EventClass {libObjPtr}};
+        return EventClass::Shared::createWithoutRef(libObjPtr);
     }
 
     EventClass::Shared createEventClass(const std::uint64_t id)
@@ -1411,7 +1508,7 @@ public:
         const auto libObjPtr = bt_event_class_create_with_id(this->libObjPtr(), id);
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return EventClass::Shared {EventClass {libObjPtr}};
+        return EventClass::Shared::createWithoutRef(libObjPtr);
     }
 
     CommonTraceClass<const bt_trace_class> traceClass() const noexcept;
@@ -1429,7 +1526,7 @@ public:
         const auto status = bt_stream_class_set_name(this->libObjPtr(), name);
 
         if (status == BT_STREAM_CLASS_SET_NAME_STATUS_MEMORY_ERROR) {
-            throw LibMemoryError {};
+            throw MemoryError {};
         }
     }
 
@@ -1546,7 +1643,7 @@ public:
             bt_stream_class_discarded_packets_have_default_clock_snapshots(this->libObjPtr()));
     }
 
-    void defaultClockClass(const ClockClass& clkCls)
+    void defaultClockClass(const ClockClass clkCls)
     {
         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
 
@@ -1615,15 +1712,15 @@ public:
         return nonstd::nullopt;
     }
 
-    void packetContextFieldClass(const StructureFieldClass& fc)
+    void packetContextFieldClass(const StructureFieldClass fc)
     {
         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
 
         const auto status =
             bt_stream_class_set_packet_context_field_class(this->libObjPtr(), fc.libObjPtr());
 
-        if (status == BT_EVENT_CLASS_SET_FIELD_CLASS_STATUS_MEMORY_ERROR) {
-            throw LibMemoryError {};
+        if (status == BT_STREAM_CLASS_SET_FIELD_CLASS_STATUS_MEMORY_ERROR) {
+            throw MemoryError {};
         }
     }
 
@@ -1649,15 +1746,15 @@ public:
         return nonstd::nullopt;
     }
 
-    void eventCommonContextFieldClass(const StructureFieldClass& fc)
+    void eventCommonContextFieldClass(const StructureFieldClass fc)
     {
         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
 
         const auto status =
             bt_stream_class_set_event_common_context_field_class(this->libObjPtr(), fc.libObjPtr());
 
-        if (status == BT_EVENT_CLASS_SET_FIELD_CLASS_STATUS_MEMORY_ERROR) {
-            throw LibMemoryError {};
+        if (status == BT_STREAM_CLASS_SET_FIELD_CLASS_STATUS_MEMORY_ERROR) {
+            throw MemoryError {};
         }
     }
 
@@ -1684,7 +1781,7 @@ public:
     }
 
     template <typename LibValT>
-    void userAttributes(const CommonMapValue<LibValT>& userAttrs)
+    void userAttributes(const CommonMapValue<LibValT> userAttrs)
     {
         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
 
@@ -1703,13 +1800,33 @@ public:
 
     Shared shared() const noexcept
     {
-        return Shared {*this};
+        return Shared::createWithRef(*this);
     }
 };
 
 using StreamClass = CommonStreamClass<bt_stream_class>;
 using ConstStreamClass = CommonStreamClass<const bt_stream_class>;
 
+namespace internal {
+
+struct StreamClassTypeDescr
+{
+    using Const = ConstStreamClass;
+    using NonConst = StreamClass;
+};
+
+template <>
+struct TypeDescr<StreamClass> : public StreamClassTypeDescr
+{
+};
+
+template <>
+struct TypeDescr<ConstStreamClass> : public StreamClassTypeDescr
+{
+};
+
+} /* namespace internal */
+
 template <typename LibObjT>
 ConstStreamClass CommonEventClass<LibObjT>::streamClass() const noexcept
 {
@@ -1799,11 +1916,11 @@ struct CommonTraceClassSpec<const bt_trace_class> final
 } /* namespace internal */
 
 template <typename LibObjT>
-class CommonTraceClass final : public internal::BorrowedObj<LibObjT>
+class CommonTraceClass final : public BorrowedObject<LibObjT>
 {
 private:
-    using typename internal::BorrowedObj<LibObjT>::_ThisBorrowedObj;
-    using typename internal::BorrowedObj<LibObjT>::_LibObjPtr;
+    using typename BorrowedObject<LibObjT>::_ThisBorrowedObject;
+    using typename BorrowedObject<LibObjT>::_LibObjPtr;
     using _ConstSpec = internal::CommonTraceClassSpec<const bt_trace_class>;
     using _Spec = internal::CommonTraceClassSpec<LibObjT>;
     using _ThisCommonTraceClass = CommonTraceClass<LibObjT>;
@@ -1813,37 +1930,36 @@ private:
                                                    CommonStreamClass<bt_stream_class>>::type;
 
 public:
-    using Shared =
-        internal::SharedObj<_ThisCommonTraceClass, LibObjT, internal::TraceClassRefFuncs>;
+    using Shared = SharedObj<_ThisCommonTraceClass, LibObjT, internal::TraceClassRefFuncs>;
 
     using UserAttributes =
         typename std::conditional<std::is_const<LibObjT>::value, ConstMapValue, MapValue>::type;
 
-    explicit CommonTraceClass(const _LibObjPtr libObjPtr) noexcept : _ThisBorrowedObj {libObjPtr}
+    explicit CommonTraceClass(const _LibObjPtr libObjPtr) noexcept : _ThisBorrowedObject {libObjPtr}
     {
     }
 
     template <typename OtherLibObjT>
-    CommonTraceClass(const CommonTraceClass<OtherLibObjT>& traceClass) noexcept :
-        _ThisBorrowedObj {traceClass}
+    CommonTraceClass(const CommonTraceClass<OtherLibObjT> traceClass) noexcept :
+        _ThisBorrowedObject {traceClass}
     {
     }
 
     template <typename OtherLibObjT>
-    _ThisCommonTraceClass& operator=(const CommonTraceClass<OtherLibObjT>& traceClass) noexcept
+    _ThisCommonTraceClass& operator=(const CommonTraceClass<OtherLibObjT> traceClass) noexcept
     {
-        _ThisBorrowedObj::operator=(traceClass);
+        _ThisBorrowedObject::operator=(traceClass);
         return *this;
     }
 
-    Trace::Shared instantiate(const Trace& trace)
+    Trace::Shared instantiate()
     {
         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
 
         const auto libObjPtr = bt_trace_create(this->libObjPtr());
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return Trace::Shared {Trace {libObjPtr}};
+        return Trace::Shared::createWithoutRef(libObjPtr);
     }
 
     StreamClass::Shared createStreamClass()
@@ -1853,7 +1969,7 @@ public:
         const auto libObjPtr = bt_stream_class_create(this->libObjPtr());
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return StreamClass::Shared {StreamClass {libObjPtr}};
+        return StreamClass::Shared::createWithoutRef(libObjPtr);
     }
 
     StreamClass::Shared createStreamClass(const std::uint64_t id)
@@ -1863,7 +1979,7 @@ public:
         const auto libObjPtr = bt_stream_class_create_with_id(this->libObjPtr(), id);
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return StreamClass::Shared {StreamClass {libObjPtr}};
+        return StreamClass::Shared::createWithoutRef(libObjPtr);
     }
 
     FieldClass::Shared createBoolFieldClass()
@@ -1873,7 +1989,7 @@ public:
         const auto libObjPtr = bt_field_class_bool_create(this->libObjPtr());
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return FieldClass::Shared {FieldClass {libObjPtr}};
+        return FieldClass::Shared::createWithoutRef(libObjPtr);
     }
 
     BitArrayFieldClass::Shared createBitArrayFieldClass(const std::uint64_t length)
@@ -1883,7 +1999,7 @@ public:
         const auto libObjPtr = bt_field_class_bit_array_create(this->libObjPtr(), length);
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return BitArrayFieldClass::Shared {BitArrayFieldClass {libObjPtr}};
+        return BitArrayFieldClass::Shared::createWithoutRef(libObjPtr);
     }
 
     IntegerFieldClass::Shared createUnsignedIntegerFieldClass()
@@ -1893,7 +2009,7 @@ public:
         const auto libObjPtr = bt_field_class_integer_unsigned_create(this->libObjPtr());
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return IntegerFieldClass::Shared {IntegerFieldClass {libObjPtr}};
+        return IntegerFieldClass::Shared::createWithoutRef(libObjPtr);
     }
 
     IntegerFieldClass::Shared createSignedIntegerFieldClass()
@@ -1903,7 +2019,7 @@ public:
         const auto libObjPtr = bt_field_class_integer_signed_create(this->libObjPtr());
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return IntegerFieldClass::Shared {IntegerFieldClass {libObjPtr}};
+        return IntegerFieldClass::Shared::createWithoutRef(libObjPtr);
     }
 
     UnsignedEnumerationFieldClass::Shared createUnsignedEnumerationFieldClass()
@@ -1913,7 +2029,7 @@ public:
         const auto libObjPtr = bt_field_class_enumeration_unsigned_create(this->libObjPtr());
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return UnsignedEnumerationFieldClass::Shared {UnsignedEnumerationFieldClass {libObjPtr}};
+        return UnsignedEnumerationFieldClass::Shared::createWithoutRef(libObjPtr);
     }
 
     SignedEnumerationFieldClass::Shared createSignedEnumerationFieldClass()
@@ -1923,7 +2039,7 @@ public:
         const auto libObjPtr = bt_field_class_enumeration_signed_create(this->libObjPtr());
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return SignedEnumerationFieldClass::Shared {SignedEnumerationFieldClass {libObjPtr}};
+        return SignedEnumerationFieldClass::Shared::createWithoutRef(libObjPtr);
     }
 
     FieldClass::Shared createSinglePrecisionRealFieldClass()
@@ -1933,7 +2049,7 @@ public:
         const auto libObjPtr = bt_field_class_real_single_precision_create(this->libObjPtr());
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return FieldClass::Shared {FieldClass {libObjPtr}};
+        return FieldClass::Shared::createWithoutRef(libObjPtr);
     }
 
     FieldClass::Shared createDoublePrecisionRealFieldClass()
@@ -1943,7 +2059,7 @@ public:
         const auto libObjPtr = bt_field_class_real_double_precision_create(this->libObjPtr());
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return FieldClass::Shared {FieldClass {libObjPtr}};
+        return FieldClass::Shared::createWithoutRef(libObjPtr);
     }
 
     FieldClass::Shared createStringFieldClass()
@@ -1953,10 +2069,10 @@ public:
         const auto libObjPtr = bt_field_class_string_create(this->libObjPtr());
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return FieldClass::Shared {FieldClass {libObjPtr}};
+        return FieldClass::Shared::createWithoutRef(libObjPtr);
     }
 
-    StaticArrayFieldClass::Shared createStaticArrayFieldClass(const FieldClass& elementFieldClass,
+    StaticArrayFieldClass::Shared createStaticArrayFieldClass(const FieldClass elementFieldClass,
                                                               const std::uint64_t length)
     {
         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
@@ -1965,10 +2081,10 @@ public:
             this->libObjPtr(), elementFieldClass.libObjPtr(), length);
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return StaticArrayFieldClass::Shared {StaticArrayFieldClass {libObjPtr}};
+        return StaticArrayFieldClass::Shared::createWithoutRef(libObjPtr);
     }
 
-    ArrayFieldClass::Shared createDynamicArrayFieldClass(const FieldClass& elementFieldClass)
+    ArrayFieldClass::Shared createDynamicArrayFieldClass(const FieldClass elementFieldClass)
     {
         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
 
@@ -1976,12 +2092,12 @@ public:
             this->libObjPtr(), elementFieldClass.libObjPtr(), nullptr);
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return ArrayFieldClass::Shared {ArrayFieldClass {libObjPtr}};
+        return ArrayFieldClass::Shared::createWithoutRef(libObjPtr);
     }
 
     DynamicArrayWithLengthFieldClass::Shared
-    createDynamicArrayFieldClass(const FieldClass& elementFieldClass,
-                                 const IntegerFieldClass& lengthFieldClass)
+    createDynamicArrayFieldClass(const FieldClass elementFieldClass,
+                                 const IntegerFieldClass lengthFieldClass)
     {
         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
 
@@ -1989,8 +2105,7 @@ public:
             this->libObjPtr(), elementFieldClass.libObjPtr(), lengthFieldClass.libObjPtr());
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return DynamicArrayWithLengthFieldClass::Shared {
-            DynamicArrayWithLengthFieldClass {libObjPtr}};
+        return DynamicArrayWithLengthFieldClass::Shared::createWithoutRef(libObjPtr);
     }
 
     StructureFieldClass::Shared createStructureFieldClass()
@@ -2000,10 +2115,10 @@ public:
         const auto libObjPtr = bt_field_class_structure_create(this->libObjPtr());
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return StructureFieldClass::Shared {StructureFieldClass {libObjPtr}};
+        return StructureFieldClass::Shared::createWithoutRef(libObjPtr);
     }
 
-    OptionFieldClass::Shared createOptionFieldClass(const FieldClass& optionalFieldClass)
+    OptionFieldClass::Shared createOptionFieldClass(const FieldClass optionalFieldClass)
     {
         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
 
@@ -2011,12 +2126,12 @@ public:
             this->libObjPtr(), optionalFieldClass.libObjPtr());
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return OptionFieldClass::Shared {OptionFieldClass {libObjPtr}};
+        return OptionFieldClass::Shared::createWithoutRef(libObjPtr);
     }
 
     OptionWithBoolSelectorFieldClass::Shared
-    createOptionWithBoolSelectorFieldClass(const FieldClass& optionalFieldClass,
-                                           const FieldClass& selectorFieldClass)
+    createOptionWithBoolSelectorFieldClass(const FieldClass optionalFieldClass,
+                                           const FieldClass selectorFieldClass)
     {
         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
 
@@ -2024,14 +2139,13 @@ public:
             this->libObjPtr(), optionalFieldClass.libObjPtr(), selectorFieldClass.libObjPtr());
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return OptionWithBoolSelectorFieldClass::Shared {
-            OptionWithBoolSelectorFieldClass {libObjPtr}};
+        return OptionWithBoolSelectorFieldClass::Shared::createWithoutRef(libObjPtr);
     }
 
     OptionWithUnsignedIntegerSelectorFieldClass::Shared
-    createOptionWithUnsignedIntegerSelectorFieldClass(const FieldClass& optionalFieldClass,
-                                                      const IntegerFieldClass& selectorFieldClass,
-                                                      const ConstUnsignedIntegerRangeSet& ranges)
+    createOptionWithUnsignedIntegerSelectorFieldClass(const FieldClass optionalFieldClass,
+                                                      const IntegerFieldClass selectorFieldClass,
+                                                      const ConstUnsignedIntegerRangeSet ranges)
     {
         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
 
@@ -2040,14 +2154,13 @@ public:
             ranges.libObjPtr());
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return OptionWithUnsignedIntegerSelectorFieldClass::Shared {
-            OptionWithUnsignedIntegerSelectorFieldClass {libObjPtr}};
+        return OptionWithUnsignedIntegerSelectorFieldClass::Shared::createWithoutRef(libObjPtr);
     }
 
     OptionWithSignedIntegerSelectorFieldClass::Shared
-    createOptionWithSignedIntegerSelectorFieldClass(const FieldClass& optionalFieldClass,
-                                                    const IntegerFieldClass& selectorFieldClass,
-                                                    const ConstSignedIntegerRangeSet& ranges)
+    createOptionWithSignedIntegerSelectorFieldClass(const FieldClass optionalFieldClass,
+                                                    const IntegerFieldClass selectorFieldClass,
+                                                    const ConstSignedIntegerRangeSet ranges)
     {
         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
 
@@ -2056,8 +2169,7 @@ public:
             ranges.libObjPtr());
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return OptionWithSignedIntegerSelectorFieldClass::Shared {
-            OptionWithSignedIntegerSelectorFieldClass {libObjPtr}};
+        return OptionWithSignedIntegerSelectorFieldClass::Shared::createWithoutRef(libObjPtr);
     }
 
     VariantWithoutSelectorFieldClass::Shared createVariantFieldClass()
@@ -2067,24 +2179,21 @@ public:
         const auto libObjPtr = bt_field_class_variant_create(this->libObjPtr(), nullptr);
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return VariantWithoutSelectorFieldClass::Shared {
-            VariantWithoutSelectorFieldClass {libObjPtr}};
+        return VariantWithoutSelectorFieldClass::Shared::createWithoutRef(libObjPtr);
     }
 
     VariantWithUnsignedIntegerSelectorFieldClass::Shared
-    createVariantWithUnsignedIntegerSelectorFieldClass(const IntegerFieldClass& selectorFieldClass)
+    createVariantWithUnsignedIntegerSelectorFieldClass(const IntegerFieldClass selectorFieldClass)
     {
-        return VariantWithUnsignedIntegerSelectorFieldClass::Shared {
-            VariantWithUnsignedIntegerSelectorFieldClass {
-                this->_createVariantWithIntegerSelectorFieldClass(selectorFieldClass)}};
+        return this->_createVariantWithIntegerSelectorFieldClass<
+            VariantWithUnsignedIntegerSelectorFieldClass>(selectorFieldClass);
     }
 
     VariantWithSignedIntegerSelectorFieldClass::Shared
-    createVariantWithSignedIntegerSelectorFieldClass(const IntegerFieldClass& selectorFieldClass)
+    createVariantWithSignedIntegerSelectorFieldClass(const IntegerFieldClass selectorFieldClass)
     {
-        return VariantWithSignedIntegerSelectorFieldClass::Shared {
-            VariantWithSignedIntegerSelectorFieldClass {
-                this->_createVariantWithIntegerSelectorFieldClass(selectorFieldClass)}};
+        return this->_createVariantWithIntegerSelectorFieldClass<
+            VariantWithSignedIntegerSelectorFieldClass>(selectorFieldClass);
     }
 
     void assignsAutomaticStreamClassId(const bool val) noexcept
@@ -2139,7 +2248,7 @@ public:
     }
 
     template <typename LibValT>
-    void userAttributes(const CommonMapValue<LibValT>& userAttrs)
+    void userAttributes(const CommonMapValue<LibValT> userAttrs)
     {
         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
 
@@ -2158,12 +2267,13 @@ public:
 
     Shared shared() const noexcept
     {
-        return Shared {*this};
+        return Shared::createWithRef(*this);
     }
 
 private:
-    bt_field_class *
-    _createVariantWithIntegerSelectorFieldClass(const IntegerFieldClass& selectorFieldClass)
+    template <typename ObjT>
+    typename ObjT::Shared
+    _createVariantWithIntegerSelectorFieldClass(const IntegerFieldClass selectorFieldClass)
     {
         static_assert(!std::is_const<LibObjT>::value, "`LibObjT` must NOT be `const`.");
 
@@ -2171,13 +2281,33 @@ private:
             bt_field_class_variant_create(this->libObjPtr(), selectorFieldClass.libObjPtr());
 
         internal::validateCreatedObjPtr(libObjPtr);
-        return libObjPtr;
+        return ObjT::Shared::createWithoutRef(libObjPtr);
     }
 };
 
 using TraceClass = CommonTraceClass<bt_trace_class>;
 using ConstTraceClass = CommonTraceClass<const bt_trace_class>;
 
+namespace internal {
+
+struct TraceClassTypeDescr
+{
+    using Const = ConstTraceClass;
+    using NonConst = TraceClass;
+};
+
+template <>
+struct TypeDescr<TraceClass> : public TraceClassTypeDescr
+{
+};
+
+template <>
+struct TypeDescr<ConstTraceClass> : public TraceClassTypeDescr
+{
+};
+
+} /* namespace internal */
+
 template <typename LibObjT>
 ConstTraceClass CommonStreamClass<LibObjT>::traceClass() const noexcept
 {
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