Subj : Re: pread/pwrite
To   : comp.programming.threads
From : Peter Julian
Date : Wed May 25 2005 10:37 pm


"Lyonya" <leonews@optonline.com> wrote in message
news:OF7le.26169$NZ1.8906@fe09.lga...
> can pread/pwrite operate on sockets the way they work with files?

Not in the case of pread or pwrite. That doesn't prevent you from
overloading operator<< and operator>> to stream the socket data to/from a
std buffer, for example. The choice of buffers you might implement could be
std::stringstream or just a plain std::string, amongst other choices.

Socket& operator<<( const std::string& data); // write a string to socket
Socket& operator<<( const char* data);    // write a char* to a socket
Socket& operator>>( std::string& data); // read a string from a socket

or even templated to transfer various datatypes:

template <class T>
Socket& MySocket::operator<<(T& data)
{
    std::ostringstream os;
    os << data;
    std::string s(os.str());
    send( fd, s.c_str(), s.length());
}

the objects os and s might also be made members of the MySocket class
instead of temporaries.

etc...

.