Re: Socket and STDIN pooling

[Ron Michael Khu <ronkhu@ntsp.nec.co.jp>]

 >I have a question about pooling 2 sockets and stdin.
 >I am currently making an application which accepts
 >input from the stdin.

 >It had a connection to a server connecting to 2ports.
 >If for example the stdin is a blocking descriptor and
 >the 2 other descriptors are to be checked real time
 >how can it be done without using threads?


pseudo-code for polling multiple file descriptors:
( no error checking..)

set STDIN in mySet
set socket1 in mySet
set socket2 in mySet

for( ; ; )
{
  copy mySet to mySet2
  while ( select( largestFd, &mySet2, NULL, NULL, NULL ) > 0 )
  {
      for (  i=0; i<=largestFd; i++ )
     {
         if ( i is in mySet2)
         {
            <u can do a fork() here if u want>
            switch( i )
            {
                 case STDIN:  <process input>; break;
                 case socket1:  <process data>; break;
                 case socket2:  <process data>; break;
             }
         }
     }
  }
}

Of coure there are many ways of traversing thru an fdset...