Saving state against reboot

[Paul Prescod]

What if LispOS checkpoints every five second (on average). What if I
have a mail queue that stores outgoing messages. Then I hit "send". A
message goes out. The machine crashes before that action is
checkpointed. I reboot the computer and it starts the thread where it
was last checkpointed and sends the message again. This says to me that
applications must control checkpointing using (dumplisp) or (save-object
...)

 Paul Prescod