[Qt-interest] Problem with FD_SET and select

[Thiago Macieira]

Em Sexta-feira 18. Setembro 2009, às 04.33.58, Flavio Ceolin escreveu:
> void ThreadCommRead::run()
> {
>         fd_set fds;
>         int aux=0;
>         FD_ZERO(&fds);
>         FD_SET(m_handle,&fds);          
>         while(running){
>                 aux = select(m_handle+1,&fds,NULL,NULL,&timer);
>                 if(aux>0){
>                         m_mutex->lock();
>                         if((nbytes = read(m_handle,buffer,BUFFERSIZE))>0)
>                         emit dataRead(buffer,nbytes);
>                         m_mutex->unlock();
>                 }
>         }
> }
> 

Where is timer set? It has to be reset at every loop, because the select(2) 
call could modify it.

According to the manual of select(2), it returns zero if the timer expires. It 
looks like that's what's happening in your example.

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Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
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