From: dewar@merv.cs.nyu.edu (Robert Dewar)
Subject: Re: Reading a line of arbitrary length
Date: 1997/03/06
Date: 1997-03-06T00:00:00+00:00 [thread overview]
Message-ID: <dewar.857651874@merv> (raw)
In-Reply-To: 5flmbc$nkm@mulga.cs.mu.OZ.AU
iFergus says
<<So how transparent is the GC when used with the foreign language
interface? Can one pass a pointer to a dynamically allocated SNOBOL4
data structure to the C code? What happens if the last pointer to such
a data structure exists only in a C global variable?
>>
Given that typical SNOBOL4 compilers have compacting collectors, they
are WAY out of range of this kind of consideration. A conservative
collector cannot conservatively modify things that it is not sure are
pointers! So the answer is that C can reference structures, but cannot
hold onto pointers AT ALL, let alone be the only one to hold on to them!
next prev parent reply other threads:[~1997-03-06 0:00 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
1997-02-12 0:00 Reading a line of arbitrary length Thomas Koenig
1997-02-12 0:00 ` Robert Dewar
1997-02-12 0:00 ` David C. Hoos, Sr.
1997-02-13 0:00 ` Jeff Carter
1997-02-13 0:00 ` Ted Dennison
1997-02-13 0:00 ` Rex Reges
1997-02-15 0:00 ` Matthew Heaney
1997-02-13 0:00 ` Larry Kilgallen
1997-02-13 0:00 ` Geert Bosch
1997-02-19 0:00 ` Jean-Etienne Doucet
1997-02-21 0:00 ` Mats Weber
1997-02-22 0:00 ` Robert Dewar
1997-02-24 0:00 ` Robert Dewar
1997-02-13 0:00 ` Rex Reges
[not found] ` <dewar.855848896@merv>
[not found] ` <33037A74.44AF@mds.lmco.com>
[not found] ` <dewar.855929857@merv>
1997-02-14 0:00 ` Gene Ouye
1997-02-15 0:00 ` Robert Dewar
1997-02-15 0:00 ` Brian Rogoff
1997-02-15 0:00 ` Robert Dewar
1997-02-16 0:00 ` Brian Rogoff
1997-02-17 0:00 ` Robert Dewar
1997-02-14 0:00 ` Rex Reges
1997-02-14 0:00 ` Mats Weber
1997-02-15 0:00 ` Robert Dewar
1997-02-17 0:00 ` Mats Weber
1997-02-17 0:00 ` Robert Dewar
[not found] ` <dsmith-1302971702290001@dsmith.clark.net>
[not found] ` <33047186.463F@mds.lmco.com>
1997-02-14 0:00 ` Robert Dewar
1997-02-14 0:00 ` Mats Weber
1997-02-16 0:00 ` Jon S Anthony
1997-02-18 0:00 ` Robert Dewar
1997-02-22 0:00 ` Jon S Anthony
1997-02-21 0:00 ` Brian Rogoff
1997-02-22 0:00 ` Robert Dewar
1997-02-22 0:00 ` Brian Rogoff
1997-02-23 0:00 ` Robert Dewar
1997-02-25 0:00 ` Jon S Anthony
1997-02-26 0:00 ` Robert Dewar
1997-02-27 0:00 ` Jon S Anthony
1997-03-02 0:00 ` Robert Dewar
1997-03-02 0:00 ` Robert Dewar
1997-03-03 0:00 ` Fergus Henderson
1997-03-03 0:00 ` Larry Kilgallen
1997-03-04 0:00 ` Fergus Henderson
1997-03-05 0:00 ` Jon S Anthony
1997-03-03 0:00 ` Robert Dewar
1997-03-03 0:00 ` Jon S Anthony
1997-03-03 0:00 ` Jon S Anthony
1997-03-03 0:00 ` Jon S Anthony
1997-03-03 0:00 ` Robert Dewar
1997-03-03 0:00 ` Jon S Anthony
1997-03-03 0:00 ` Robert Dewar
1997-03-04 0:00 ` Thomas Koenig
1997-03-05 0:00 ` Larry Kilgallen
1997-03-06 0:00 ` Robert Dewar
1997-03-06 0:00 ` Robert Dewar
[not found] ` <dewar.857447653@m <JSA.97Mar4154951@alexandria>
1997-03-05 0:00 ` Robert A Duff
1997-03-05 0:00 ` Jon S Anthony
1997-03-06 0:00 ` Robert A Duff
1997-03-06 0:00 ` Robert Dewar
1997-03-04 0:00 ` Jon S Anthony
1997-03-05 0:00 ` Larry Kilgallen
1997-03-06 0:00 ` Fergus Henderson
1997-03-06 0:00 ` Really more GC talk (was: Reading a line of arbitrary length) Larry Kilgallen
1997-03-11 0:00 ` Fergus Henderson
1997-03-11 0:00 ` Robert Dewar
1997-03-12 0:00 ` Fergus Henderson
1997-03-04 0:00 ` Reading a line of arbitrary length Jon S Anthony
1997-03-05 0:00 ` Jon S Anthony
1997-02-16 0:00 ` Matthew Heaney
1997-02-16 0:00 ` Robert Dewar
1997-02-16 0:00 ` Matthew Heaney
1997-02-17 0:00 ` Robert Dewar
1997-02-25 0:00 ` Jon S Anthony
1997-03-04 0:00 ` Fergus Henderson
1997-03-05 0:00 ` Richard A. O'Keefe
1997-03-06 0:00 ` Fergus Henderson
1997-03-06 0:00 ` Robert Dewar [this message]
1997-03-11 0:00 ` Fergus Henderson
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