Wanted: event control for UNIX

[bobr]

We are looking for a feature in UNIX which will give event control.  
This feature will allow a program to sleep on multiple queues, and to 
wake up when any one of the queues has something put into it.  The 
queues could be TTY I/O, disk I/O or IPC.  We are currently using System 
V.  If anyone on the net has seen such a feature, or could recommend an 
approach on how we could design it ourselves, please let us know.  

Thanks in advance,

   Bob Richards
   Chemical Abstracts Service
   (614) 421-3600 X2486
   ..!cbosgd!osu-eddie!apr!chemabs!bobr