From: Warren <ve3wwg@gmail.com>
Subject: Re: segfault with large-ish array with GNAT
Date: Fri, 19 Mar 2010 13:20:19 +0000 (UTC)
Date: 2010-03-19T13:20:19+00:00 [thread overview]
Message-ID: <Xns9D405F01ACF3BWarrensBlatherings@188.40.43.245> (raw)
In-Reply-To: bce19c00-0599-4ff6-a5cf-16bb3d742373@e7g2000yqf.googlegroups.com
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Ludovic Brenta expounded in news:bce19c00-0599-4ff6-a5cf-16bb3d742373
@e7g2000yqf.googlegroups.com:
> Warren wrote on comp.lang.ada:
>> Imagine
>> a CPU that somehow in microcode was able to do a fast-malloc
>> of a stack frame (as part of a call), linking the new
>> frame back to the calling frame. Then you could eliminate
>> the need for a "linear virtual stack region" altogether. This
>> would allow code to freely fork into many parallel
>> threads without the issue of pre-allocating stack [address]
>> space to each new thread. When the called procedure executed
>> a "return", it would (in microcode) free the current stack
>> frame and return to the prior one. �The "call" allocate/free's
>> could be constrained to one general "stack heap".
>
> I wonder how that would work with processors that have register
> windows specifically to reduce the need for a memory-based stack (i.e.
> SPARC, IA64 and maybe others).
>
> --
> Ludovic Brenta.
I'm not sure I follow, but objects like small buffers would
presumably still occupy the current stack frame.
Warren
next prev parent reply other threads:[~2010-03-19 13:20 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-17 19:21 segfault with large-ish array with GNAT Jerry
2010-03-17 19:36 ` Gautier write-only
2010-03-17 19:58 ` Georg Bauhaus
2010-03-18 6:45 ` Jerry
2010-03-18 7:52 ` Ludovic Brenta
2010-03-18 23:57 ` Robert A Duff
2010-03-18 10:13 ` Jeffrey Creem
2010-03-18 10:23 ` Ludovic Brenta
2010-03-19 0:44 ` Jerry
2010-03-18 19:51 ` Adam Beneschan
2010-03-18 14:44 ` John B. Matthews
2010-03-19 4:44 ` Jeffrey R. Carter
2010-03-19 8:14 ` John B. Matthews
2010-03-18 15:36 ` Gautier write-only
2010-03-18 16:46 ` tmoran
2010-03-18 19:11 ` Warren
2010-03-18 17:03 ` Warren
2010-03-18 20:38 ` Maciej Sobczak
2010-03-19 13:26 ` Charmed Snark
2010-03-19 17:27 ` tmoran
2010-03-19 18:02 ` Simon Wright
2010-03-19 20:10 ` Warren
2010-03-19 21:50 ` Adam Beneschan
2010-03-19 20:24 ` Warren
2010-03-19 20:38 ` Warren
2010-03-19 8:31 ` Ludovic Brenta
2010-03-19 13:20 ` Warren [this message]
2010-03-19 12:04 ` Brian Drummond
2010-03-19 19:22 ` Jerry
2010-03-19 20:22 ` Jeffrey R. Carter
2010-03-19 23:24 ` Jerry
2010-03-20 0:25 ` Jeffrey R. Carter
2010-05-07 21:58 ` Raising the stack limit (was: segfault with large-ish array with GNAT) Björn Persson
2010-03-17 19:57 ` segfault with large-ish array with GNAT jonathan
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