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Am Tue, 06 Jan 2004 08:35:29 +0100 hat Michael Sperber
"Felix" == Felix Winkelmann <felix@xxxxxxxxxxxxx> writes:
Felix> Michael Sperber wrote:
felix> Note that the Chicken FFI (for example) does not allow GC during
felix> invocation of foreign code,
Sure, and that *greatly* simplifies a lot of issues. It's also an
unacceptable restriction for many Scheme systems.
Felix> Well, I wonder what that should be. Could you provide an example?
Any environment where
- C code allocates
- allocation may trigger a GC to provide the requested space
Huh? Then perform a callback. Where's the problem?
(BTW, if you re-read the message you're quoting, it says:
"Note that the Chicken FFI (for example) does not allow GC during the
invocation of foreign code,
unless callbacks are explicitly used"
These include, at the very least:
- Scheme 48
(In case you completely misunderstood: Chicken allows callbacks.
Callbacks may allocate, allocation may GC, i.e. C code called in Chicken
PS: Please note this is SRFI 50; you posted to the SRFI 40 mailing
Yep, sorry. I noticed two seconds too late and reposted it.