How can i find when a variable is out of scope?

[groleo]

Hi.
I have some problems with variables

I have the classes given below:

The problem is when I try to acces Commands().sock->m_sock, from
inside Message();
When I'm using m_sock inside Commands(), it has one value.
When I'm using m_sock inside Message() it has another value.
The thing is that i'm not modifying the m_sock value;


class Socket {
public:
Socket(){};
virtual ~Socket(){};

bool create();
bool bind ( const int port );
bool listen() const;
bool accept ( Socket& ) const;
bool connect ( const std::string host, const int port
);

// Data Transimission
bool send ( const std::string ) const;
int recv ( std::string& ) const;
void set_non_blocking ( const bool );
bool is_valid() const { return m_sock != -1; }

private:
int m_sock;
sockaddr_in m_addr;


};




class Handler {
public:
Handler() {} ;
virtual ~Handler(){};
virtual void OnStartElement(){};
virtual void OnElementEnd(){};
virtual void OnCharacter(){};
Socket* sock;
};

class Commands : public Handler {
public:
Commands();
virtual ~Commands() {};
void OnStartElement();
void OnElementEnd();
void OnCharacter();
Socket* sock;
};

class Message : public Handler {
public:
Message();
virtual ~Message() {};
void OnStartElement();
void OnElementEnd();
void OnCharacter();
};

 

[Niels Dybdahl]

Hi.
I have some problems with variables

I have the classes given below:

The problem is when I try to acces Commands().sock->m_sock, from
inside Message();
When I'm using m_sock inside Commands(), it has one value.
When I'm using m_sock inside Message() it has another value.
The thing is that i'm not modifying the m_sock value;

You have two Socket* sock; one in Handler and one in Commands. Is this on
purpose or is that the error ?
The cause might be that not both are initialized.

Niels Dybdahl

 

[groleo]

Nop, i've commented out , the Sock* from class Handler.

 

[Karl Heinz Buchegger]

Hi.
I have some problems with variables

I have the classes given below:

The problem is when I try to acces Commands().sock->m_sock, from
inside Message();
When I'm using m_sock inside Commands(), it has one value.
When I'm using m_sock inside Message() it has another value.
The thing is that i'm not modifying the m_sock value;

Please show the exact code that implements this.
If possible, create a short, complete test program which shows just
that error in action.

 

[groleo]

The whole source code is at
http://groleo.go.ro/ttl/1.htm.
The Sock* sock, variable does go out of scope.
I tried to declare it as global, but then I would
get into multiple declarations.

 

[Karl Heinz Buchegger]

The whole source code is at
http://groleo.go.ro/ttl/1.htm.

Well.
I can't access that server, it doesn't seem
to exist.

What's so hard about creating a small test program
which shows your problem? In the process of creating
it, you might even discover the root of your problem
(you wouldn't be the first one).

 

[Bogdan Sintoma]

Nop, i've commented out , the Sock* from class Handler.

Are you sure?
In that case you don't have any sock member in Message class. So, haw
could it have any value?
And by the way there are a lot of wired stuff in
Message::OnStartElement(). You create and use temporary un-initialized
Commands objects.

As Karl already told you, please make a short test program that has the
same problem.

Bogdan Sintoma

 

[groleo]

Well, done the test
The problem was , as Karl said, in
Message::OnStartElement().
I was initializing a new object, and the
socket file descriptor was re-newed.