libace5.4.7c2a 5.4.7-11 (i386 binary) in ubuntu feisty

 This package contains the ADAPTIVE Communication Environment (ACE)
 framework.
 .
 It provides platform independent C++ wrappers for interprocess
 communication:
  * signals
  * pipes
  * sockets
  * message queues
  * semaphores
  * shared memory
 as well as thread, process management routines and much more.
 .
 Moreover, it defines patterns for common communication tasks. Beyond
 these:
  * Reactor, to handle event demultiplexing and dispatching
  * Proactor, for asynchronous I/O driven programs
 .
  Homepage: http://www.cs.wustl.edu/~schmidt/ACE.html