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by: Rick |
last post by:
Hi,
I wrote a few classes recently and am writing a small GC implementation
for C++. I will be implementing my own gc_ptr type maintain a list where
I'll store pointers to allocated memory. I was wondering if it is
possible to identify objects during runtime via RTTI because I don't
want to be doing:
gc_ptr<int>::doGC();
gc_ptr<double>::doGC();
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by: shishir |
last post by:
Please consider the following
//file test.cpp
#include <iostream>
int main()
{
int x;
try
{
throw x;
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by: Kleidemos |
last post by:
If I implement a simple RTTI system, more simple than C++ RTTI system
for my program and this system is plus or minus:
#define DEF_RTTI_BASE(name) virtual inline const char *Name(){ return
#name; }
#define DEF_RTTI(name) inline const char *Name(){ return #name; }
And(for example)
class CProva
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by: Agoston Bejo |
last post by:
Hello there,
I would like to know what overheads there are to think of when using RTTI. I
understand that enabling RTTI increases the sizes of the classes, but not
the objects themselves. This doesn't sound too bad.
What I'm worried about is whether there is a general performance overhead
caused by enabling RTTI, such as enabling exceptions makes a C++ program
slower even when there are no exceptions actually used.
Are there similar...
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by: denny |
last post by:
Hey all,
I know that dynamic_cast<> takes some time, but , for instance, is there a memoy cost associated in with it? Does it have to maintain a table in memory, thus bloating the runtime ram needs of my dll? Does it bloat the actual download size - would my dll be smaller without it?
thanks - I'm using rtti in some instances, but I jsut want to know if it's costing me hundreds of K in extra download.
-denny-
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by: Steven T. Hatton |
last post by:
I'm trying to work out a design for dynamically determining file types, and
for generating new files of a given type. I'm curious to know what others
think of my current strategy. Is it "so einfach wie möglich machen, aber
nicht einfacher" or "Rube Goldberg"?
The first part of this has to do with a technique used in the C++ Standard
Library, so I suspect the purist will not have any objection. It's the
approach used to build the...
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by: Neo |
last post by:
Hi Friends,
I have a question about RTTI.
1) In C++ we have vptr pointing to vtables which helps to make use of
pointer as polymorphic entities.
2) Without knowing object type I can call methods of object using
those pointers.
So in which case RTTI is needed? ( Why I need to know my object
type?)
Regards,
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by: dotNeter |
last post by:
I'm studying the RTTI, and my current work is concern for how to get
the self-defined type at runtime, that's exactly what the RTTI does.
I mean, in my application, I built several self-defined data types, so
I have to implement the RTTI by myself.
I need a simple and effective example to help me decide how to design.
Can someon help me?
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by: Chameleon |
last post by:
I know than dynamic_cast check string name of derived to base class and
if one of them match, return the pointer of that object or else zero.
I suppose, I dynamic_cast instead of strings, checks integers, then this
procedure will be more fast, so I create something like this:
---------------------------------------------
class A
{
public:
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
|
by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
|
by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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