Re: race condition in run-time system

Taylor R Campbell <[email protected]>
Newsgroups gmane.lisp.scheme.scheme48
Message-ID <[email protected]> 
It occurs to me that in the current implementation of the compiler and
virtual machine, no interrupts will ever be delivered between the
STORED-OBJECT-REF and STORED-OBJECT-SET! instructions in the code for
PERIODICALLY-FORCE-OUTPUT!.  This means that adding the clause
(INTEGRATE #T) to the I/O package will change the semantics of the
procedure and introduce the race condition I described.  (Any other
changes that cause the procedure to involve procedure calls will have
the same effect.)  This is surely not a desirable state of affairs.
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