signals are not IPC!

[nather at utastro.UUCP]

Inter-process communication:

If somebody *does* decide to modify Un*x to permit such communication,
please consider the possibility that multiple cpu's may be running
different processes that must communicate.  Example:  assuming only
one cpu, a LIFO stack works fine.  With 2 cpu's, both with access
to the stack pointer, disaster results.  A FIFO (mailbox) scheme is
ok so long as each cpu has its own pointer.

                                        Ed Nather
                                     ...ihnp4!kpno!utastro!nather