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| From | Christian Weisgerber <naddy@mips.inka.de> |
| Newsgroups | comp.lang.awk |
| Subject | Re: (GAWK) Persistent Memory only works on 64-bit systems? |
| Date | Sat, 19 Apr 2025 14:04:22 -0000 (UTC) |
| Message-ID | <slrn1007bb6.291u.naddy@lorvorc.mips.inka.de> (permalink) |
| References | <vtvung$1v9aj$1@news.xmission.com> |
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On 2025-04-19, Kenny McCormack <gazelle@shell.xmission.com> wrote: > And I remembered reading somewhere that the PMA feature works on 64-bit > systems (implying that it *only* works on 64-bit systems). Yes, the README for PMA already says: "Requirements/assumptions include 64-bit machine words (longs and pointers) and reasonable page sizes." > So, I'm curious as to *why* this restriction? Could someone on the dev > team (or other knowledgeable person) comment on this? You'll need to read Terence Kelly's papers and/or the source code for a rationale. It's not really a gawk issue as gawk is simply a consumer and inherits the limitation from the PMA upstream. I.e., I tried to find a quick answer and didn't. Tagged pointers? *quickly looks over support/pma.c* Indeed, I see that the lowest three bits of allocated object pointers are used for flags. -- Christian "naddy" Weisgerber naddy@mips.inka.de
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(GAWK) Persistent Memory only works on 64-bit systems? gazelle@shell.xmission.com (Kenny McCormack) - 2025-04-19 10:42 +0000
Re: (GAWK) Persistent Memory only works on 64-bit systems? Luuk <luuk@invalid.lan> - 2025-04-19 13:36 +0200
Re: (GAWK) Persistent Memory only works on 64-bit systems? gazelle@shell.xmission.com (Kenny McCormack) - 2025-04-19 11:46 +0000
Re: (GAWK) Persistent Memory only works on 64-bit systems? gazelle@shell.xmission.com (Kenny McCormack) - 2025-04-19 11:48 +0000
Re: (GAWK) Persistent Memory only works on 64-bit systems? gazelle@shell.xmission.com (Kenny McCormack) - 2025-04-19 11:50 +0000
Re: (GAWK) Persistent Memory only works on 64-bit systems? Luuk <luuk@invalid.lan> - 2025-04-19 15:07 +0200
Re: (GAWK) Persistent Memory only works on 64-bit systems? Christian Weisgerber <naddy@mips.inka.de> - 2025-04-19 14:04 +0000
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