Comments by Buddhi Chaturanga (Top 68 by date)

Thank you Joch' very much.Your last point related to "How" topic was really helpful.
Why MS compiler doesn't support for inline assembly on x86-64 builds?

Thank you for the reply,really appreciated.The link was really helpful.

Hahaha agree,, Thank you for the reply :D

There are some particular cases in optimization;that compiler cannot make a decision or produce.

Thanks for the quick reply.

Yeah I am trying Qt + nVidia CUDA these days.Thank you Sefan :D,but I was trying to develop core library my stupid intention :)

Thank you very much

Thank you.. Thats what I meant too..

These days I am referring "The C++ Programming Language -Fourth Edition" by Bjarne Stroustrup.
But It's not greatly explain some critical stuff with compiler side,I really want to learn C/C++ compiler design and Runtime checks(regarding Visual C++)

http://www.amazon.com/Advanced-Compiler-Design-Implementation-Muchnick/dp/1558603204

@Stefan Lang->Thanks for the reply

@Stefan:
So then how particular DirectX API deals with various kind of GPUs these days-mainly nVidia and AMD/ATI graphic cards.Did Microsoft integrate all the functionality built in different Graphic cards from respective vendors?

Thank you.You meant involving with Windows Thread?

when linking X64 target machine type lib with our t.obj it keep saying that "kernel32.lib" is missing ,kernel32.lib consists in WIN SDK("C:\Program Files (x86)\Microsoft SDKs\Windows\v7.1A\Lib\x64") so I want to know how to give this path when the compilation of t.cpp is running through a bat file

thankz for the cooperation

thank you.But your answer is alternative one.I have done that before.

Specific Problem like this,if you have an application(someone developed) input only taken as a String literal - "Fire" so when any user give the command "Fire" we have to execute the function Fire() in our app,so every relevant information/data we receive from that specific application are lying in string format think in real situation Function "Fire"-in C/C++ it defined like this:
void Fire(int x,int y);
then in specific app user input like this: Fire([23,45])
this command receive from my C/C++ application as a string "Fire([23,45])" therefore firstly I have to split this and put them as elements of vector<string>,so the first element of vector is Function name "Fire" others are arguments/parameters respectively.Using string "Fire" I have to execute the real Fire(x,y) Function,I prefer the most efficient manner which means without HASHMAPPING,ARRAY OF FUNCTIONS/FUNCTIONS POINTER,do we have any fundamental approach which is having simple mechanism?

Specific Problem like this,if you have an application(someone developed) input only taken as a String literal - "Fire" so when any user give the command "Fire" we have to execute the function Fire() in our app,so every relevant information/data we receive from that specific application are lying in string format think in real situation Function "Fire"-in C/C++ it defined like this:
void Fire(int x,int y);
then in specific app user input like this: Fire([23,45])
this command receive from my C/C++ application as a string "Fire([23,45])" therefore firstly I have to split this and put them as elements of vector<string>,so the first element of vector is Function name "Fire" others are arguments/parameters respectively.Using string "Fire" I have to execute the real Fire(x,y) Function,I prefer the most efficient manner which means without HASHMAPPING,ARRAY OF FUNCTIONS/FUNCTIONS POINTER,do we have any fundamental approach which is having simple mechanism?

Specific Problem like this,if you have an application(someone developed) input only taken as a String literal - "Fire" so when any user give the command "Fire" we have to execute the function Fire() in our app,so every relevant information/data we receive from that specific application are lying in string format think in real situation Function "Fire"-in C/C++ it defined like this:
void Fire(int x,int y);
then in specific app user input like this: Fire([23,45])
this command receive from my C/C++ application as a string "Fire([23,45])" therefore firstly I have to split this and put them as elements of vector<string>,so the first element of vector is Function name "Fire" others are arguments/parameters respectively.Using string "Fire" I have to execute the real Fire(x,y) Function,I prefer the most efficient manner which means without HASHMAPPING,ARRAY OF FUNCTIONS/FUNCTIONS POINTER,do we have any fundamental approach which is having simple mechanism?

@Richard MacCutchan -> Stackoverflow people.

thank you.But lot of people are saying that constructing a subclass of std::thread class isn't a wise idea.I want exact reason or definition for the cause,could you help me on that?

yeah But I have less time to compete my project.I am really interested C/C++.Also C/C++ more advance than Java.Since I am Java Developer there are some issues with C/C++ semantics.

okey I will never ask Qts on This site..also thank for your hints. I also wanna gives you people this "These Qts' ain't my HOMEWORKS I told you people that I am new to C/C++ and I like to start with efficient and effective developing"..thank you//

no I only use codeproject,stackoverflow,Cplusplus.com and LearningC++ as my C++ Resources.

thank you! :D

yeah.I thought basically learning Directx and OpenGl is a wise idea.

This is nothing like comparing orange with apple or pineapple :D problem is people cannot grasp my question.Think you want to build specific 3D application for certain problem, you know there are various number of O/S on this planet,but considering performance and certain tasks you have to choose which technology is most suitable under which O/S.. now you will say that the choosing is depending upon the problem.So think for 3D game developing most developers chose Windows and DirectX platform ,but for some complex Algebraic geometrical simulations some chooses Opengl based applications on Linux.So different tech has different aspects

:D not my homework pal,Just for simple clarifications.Nowadays googling is a mess.Please read the question and answer I am not asking basic differences here..

I am not lazy.I will prove you.I will develop this system and find new way to link programs one another just be with this thread and I will provide my updates and progress to you.Condense and forward to you.If I am a software Engineer or Computer Scientist,this problem has been solved/concluded already., :D

:( I think I made you disappointed sorry.In my company no one knows how to answer this.I am upon my self.I got your idea but I really have anxious to build this stuff please guide me if you can.

:) I wanted to create something efficient.. Actually I am not an software engineer I am Math + Physics guy.. seems terrible huh :D .. not well experienced in deep computer engineering Just used Programming and developing stuff for Computational and Simulations purposes.But I wanted to study kind of deep computer science+engineering to learn about Computer AI and Modern compilers before that I thought it wise to develop some efficient programs in order to solve some critical problems in nowadays computer field.

Please go through these discussions and convey your ideas
LINK 1[]

Please go through these discussions and convey your ideas
LINK 1[]

Please go through these discussions and convey your ideas
LINK 1[]

JNA -JAVA NATIVE ACCESS?

LINK 2[]

Oh.Sorry my bad I kind of new to C/C++ world.It's nice to meet you here.Are you a senior software engineer?

For more efficiency/performance.As I involved with 3D game developing stuff.

Sorry then I thought it is helpful for you all.Nowadays I am referring it.Problem is I am a java developer .. new to C/C++ shifting Java to C/C++, but I want to build my stuff using these two powerful programming sources;also Assembly included.

http://stackoverflow.com/questions/18442839/wise-use-of-const-keyword-in-a-function-declaration

Can't you describe using the function I defined above:
const int*const Functiontwo(const int*const&)const;

thank you

@pasztorpisti thank you very much for your cooperation buddy.
I want to remind u something here.Please refere this book (download it)
http://bookos.org/book/1313643/fe9647

The author has mentioned a critical point about shared memory at page 5 under sub topic "CONCURRENCY WITH MULTIPLE PROCESSES" refer that.

I gone through this web site:
[CLICK HERE]

but could not grasp the exact idea I wanted.Need better explanation how to put those "const" keyword appropriately on each place and how it affects to program efficiency.?

Data passing to C/C++ program from JNI DLL and retrieving respective data from C/C++ program(.exe)

Here my objective was to develop a data link between a Java Program and C/C++ program following an efficient and effective path.

@pasztorpisti yeah I told you before JNI using for connecting purpose(like Messenger) those two simultaneously running programs(Java & C/C++) should share their memory as mentioned before.I want to ask this why can't we construct a structure to access each shared memory allocations of C/C++ program through JNI?I think you can grasp my point?(NOT IPC THROUGH JAVA NATIVE INTERFACE)

Especial case is Calling C++ program through JNI based Java application and retrieve the data and send the data to it.Building a Data/Process link between a Java program and C++ program in a simplest and efficient manner.Constructing this kind of model/algo appears to be complex and rough.

Sorry This may be shown like a mirage,but I want to do something new.I really appreciate if you can provide us some theoretical background and example codes for SHARED MEMORY IPC(give us few hints).Don't waste your valuable time on this but if you can help us by providing some simple tutorial kind of stuff ... it's really appreciated.

Why we should rely upon some in built stuff every time!Don't you like to invent and engineer you own efficient tech?Don't think this is such wasting time or garbage.May be we can find way other than using DLLs,IPC.. or google built modules.

Thank you .. Shared Memory is the only way.

http://msdn.microsoft.com/en-us/library/windows/desktop/aa365574(v=vs.85).aspx
I analyzed the content before.My target was to construct the stuff without external protocols or data wrapping.

I am going to research this problem(Except Socket Programming) with in next two weeks if I end up with good solution.I will post the entire Architecture and Coding stuff for you all.Within next few days If you could find exact solution Please post on this thread.

@ALL *FINAL CONCLUSION* => NO PROPER EFFICIENT SOLUTION.IPC will be the only solution up to now.Thank you all for your effort and contribution.

@KarstenK => I got your idea,Here I want to do is Transfer/Communicate data between two programs using single or multiple DLLs.If we define variables in global scope how we can visible values of those two each one of programs.Data values should be updated,visible.

JAVA <=> JNI DLL fine.. collaboration fine.. but passing/recieving values of any data type to JNI DLL <=> C/C++ (EXE) using SETTERS/GETTERS FUNCTION not the option

Shared Memory inside DLL for multi accessing programs problem is how?

@pasztorpisti => Multithreading/Concurrency comes into play but I caught a problem that DLL creates a single model and different memory location for each program if can find a path to link or map this memory address for program which are accessing this dll the concept of MEMORY POOL established.We have no help or aid from OS services this by our own.If we can develop a concept or algo' to mapping stuff inside the DLL problem solved.Since I am not an advanced expert in DLL/Win32 programming I do not know how to implement it. :|

@pasztorpisti => Yeap.. Sorry for my bad spelling mistakes sometimes.. I think you can grab the total idea.I need to construct two way data communication process.It's like this:
JAVA PROGRAM <=> JNI DLL <=> CONNECTOR(C/C++) DLL <=> C/C++ Program
So my idea goes like this ..<THIS CONCEPT FOR PRIMIIVE DATA TYPES ONLY>
Think I have defined and declared an int variable in Java int x,also in similar manner within C/C++ program int x;but to relate/map this integers we linker between these two,So JNI comes in to play.JNI somehow directs/translates this int => jint type inside dll we can do interpret cast/conversion to this jint => known C/C++ int type;now we have climax of this conflict that is somehow we have to pass this integer value to simultaneously running C/C++ program(.exe) and think inside our C/C++ program we change that int value to something and we have to pass it back to Java program through that dll.

@pasztorpisti => there is no secret dear pal... :D I am developing plugin for 3D simulation system.There is subsystems developed using JAVA/JAVAFX ,but main core (codebase) is totally developed using C/C++ so already theses two frameworks have been connected using sockets programming you mentioned earlier..=> OBJECT WRAPPING concept.But I realized that it's not the efficient way to construct such sysyem.Since Java can call his natives; we have to use it wisely for construct and extend our data links with C/C++ programs;therefore we able to two way communication.most efficient:we are dealing with pure C and assembly.JNI directly pave the way for invoking implemented C/C++ Function within DLL..so My idea is if we can share the same memory location allocated in DLL for JNI process to our C/C++ EXE program we directly able access and change the values of respective data types(Mostly primitive ones) @ runtime.

@Richard => I have already researched some variations.. One single DLL duplicate it's own memory spaces for different processes. Even if we load Same single DLL within two different programs we can obtain two different memory allocation.My point is HOW WE CAN MAP THESE TWO MEMORY ADDRESSES FOR DECLARED GLOBAL VARIABLES IN DLL then we can direct the data flow.

@pasztorpisti I got your point. I am not advanced Win32 Programmer.But I wanted to do here is pass data between running Java Program and C/C++ program.I think JNI has kind of efficient approach than USING SOCKET PROGRAMMING OR
IPC http://msdn.microsoft.com/en-us/library/aa365574(v=vs.85).aspx
I wanted to know with or without using separate DLL for C++ program how we can pass values from C++ program to Java side JNI DLL..?

http://stackoverflow.com/questions/18349760/how-to-interchange-data-between-java-program-and-c-program

@KarstenK Could you send me some relevant example link or resources web sites for further info?

In spite of SOCKET PROGRAMMING .. Couldn't be achieve it by using only JNI and DLLs ? Build a primitive link between Java Program <=> C/C++ program (Those are running same instance)

Thank you for links.But I want to construct two way data communication between two separate Java and C/C++ programs running simultaneously using DLLs.Example If I declared int x variable in DLL so problem is we must able to change it's value by each program and the value should be visible to each program instantaneously.(Similar to static variable)