|
Canada-0-EMBROIDERY företaget Kataloger
|
Företag Nyheter:
- The Secret Life of C++: Runtime Type Information and Casting - MIT
All we have to know is the vtable for an object, and we can, for example, find the name of its type RTTI Lets look at a quick example that use dynamic_cast<T>
- Relative VTables in C++ - LLVM
Binaries that expose the C++ ABI (or specifically v tables) will not work correctly unless all binaries involved use the same v table layout For example, a relative v tables (RV) binary using libc++ will need a libc++ compiled with RV BUT a RV binary using sanitizers doesn’t need RV-compliant compiler runtimes because they do NOT expose
- RTTI and VTABLE - Programming Development - Spiceworks Community
RTTI involves gathering the type of the pointer concerned RTTI implementation involves attaching an object containing the type information (type_info), to the class definition The vtable stores the address of this object the type_info object also links to type_info regarding all the base classes
- Why does C++ RTTI require a virtual method table?
Imagine using RTTI for classes that don't really need virtual methods The common way to do so would be to implement e g a virtual destructor that really doesn't do anything It seems like in this case, RTTI is only using the vtable pointers to keep track of inheritance information
- Understanding Virtual Tables in C++ : r cpp - Reddit
The poor-man's RTTI can be effective, but an important warning should be heeded: The vtable pointer can't always be assumed to have the same address as this A compiler may have to choose between locating a vtable-less base class at this or the vtable
- Inspecting C++ virtual tables $ {CLEVER_NAME}
Summing this up, our RTTI should have: A pointer to a vtable for __si_class_type_info; The __type_name of c; A pointer to c’s __base_type (which should itself have a type_name; The suspense is killing me, let’s see Here is what the RTTI pointer holds, with the colors hopefully mapping to the values above:
- C++ vtables - Part 4 - Compiler-Generated Code
Dynamic casts (RTTI) Dynamic casts use the typeinfo tables we explored in Part 1 They do it in runtime by looking at the typeinfo record that’s 1 pointer before what vtable pointer points to, and use the class there to check whether or not a cast is possible This explains the cost of dynamic_cast when used a lot Method pointers
- Run-Time Type Identification (RTTI) in C++ with Detailed Examples
In this post, we will discuss Run-Time Type Identification (RTTI) in C++, a feature that allows us to obtain type information for objects at runtime We will explore how RTTI works, its applications, and provide detailed examples to demonstrate its usage using snake_case naming convention
|
|