Re: Seg fault reading data from IOChannel

["Víctor M. Palacio Tárrega" <victorpalacio adtelecom es>]

You are absolutely right. buff remains from another workaround and 
should be eliminated.

About data, should be defined as char foo[<data_lenght>]; where I use 
only 1 or 4 as data_lenght.
Below are included the calls to read_data() function I'm using.

I'm doing something nasty with data conversion, or is just fine for you?

Thanks a lot,

Code:
   int value;
   char data;
   //.........................................
   ioc_unix.read_data(&ID,1);
   std::cout<<"command received: " << (int)ID << std::endl;
   //Get value
   switch(ID)
   {
   case 0: //speed
//..........................
   break;
   case 1: //RPM
       if(ioc_unix.read_data((char*)value,4) !=-1){
//......................................

klaus triendl escribió:
> Víctor M. Palacio Tárrega schrieb:
>   
> > Code:
> > int NetworkCommandManager::read_data(char* data, int len)
> > {
> >    if (len>256){
> >        std::cerr << "Cannot read more than 256 bytes" << std::endl;
> >        return -1;
> >    }
> >    gsize n;
> >    char buff[256];
> >    std::cout<< "to read "<< len << " bytes" << std::endl;
> >
> >    n = ::read(read_fd,data,len);           //workaround
> >
> >    //ioc_net->read(data,(gsize)len,n); //seg faulting call
> >
> >    std::cout<< "readed "<< n << " bytes" << std::endl;
> >    if (n == len)
> >        return 0;
> >    else
> >        return -1;  }
> >     
>
> You reserve a static buffer 'buff' that you never use. Instead, you pass
> 'data' to the read() function. How big is 'data' passed to read_data()?
>
> Klaus
>
>
>   


--

//*Víctor M. Palacio Tárrega*//