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Groups > comp.lang.c > #176393
| From | Tim Rentsch <tr.17687@z991.linuxsc.com> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: Dymamic arrays: memory management and naming |
| Date | 2023-09-25 15:24 -0700 |
| Organization | A noiseless patient Spider |
| Message-ID | <861qelki2i.fsf@linuxsc.com> (permalink) |
| References | (2 earlier) <20230919011018.d9ed14da6e842291d47b69d7@gmail.moc> <86jzsmkqyu.fsf@linuxsc.com> <20230924003915.51bb21339ab1c551eba59162@gmail.moc> <86edimjkab.fsf@linuxsc.com> <20230925104829.275@kylheku.com> |
Kaz Kylheku <864-117-4973@kylheku.com> writes:
> On 2023-09-25, Tim Rentsch <tr.17687@z991.linuxsc.com> wrote:
>
>> #include <stddef.h>
>>
>> #define ALIGN_MAX _Alignas (max_align_t)
>>
>> typedef struct {
>> size_t first_unused;
>> size_t total_available;
>> size_t element_size;
>> ALIGN_MAX char data[];
>> } Header;
>>
>> Given this definition for the prefix metadata, there are simple
>> definitions for META() and DATA(), as follows:
>>
>> Header *
>> META( void *elements ){
>> char *data = elements;
>> return data ? (Header*) (data - offsetof( Header, data )) : NULL;
>> }
>>
>> void *
>> DATA( Header *h ){
>> return h ? h->data : NULL;
>> }
>
> How about:
>
> typedef ALIGN_MAX struct {
> size_t first_unused;
> size_t total_available;
> size_t element_size;
> } Header;
>
> Header *
> META(void *elements) {
> return elements ? (Header *) elements - 1 : NULL;
> }
>
> void *
> DATA(Header *h) {
> return h ? h + 1 : NULL;
> }
>
> Can't we have ALIGN_MAX on the struct type, like with
> __attribute__((aligned))?
Please find something better to do than post these
useless responses. I don't want to waste any more
time on them.
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Dymamic arrays: memory management and naming Anton Shepelev <anton.txt@gmail.moc> - 2023-09-09 13:23 +0300
Re: Dymamic arrays: memory management and naming Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2023-09-09 03:56 -0700
Re: Dymamic arrays: memory management and naming Kaz Kylheku <864-117-4973@kylheku.com> - 2023-09-09 15:06 +0000
Re: Dymamic arrays: memory management and naming scott@slp53.sl.home (Scott Lurndal) - 2023-09-09 15:44 +0000
Re: Dymamic arrays: memory management and naming Spiros Bousbouras <spibou@gmail.com> - 2023-09-10 17:57 +0000
Re: Dymamic arrays: memory management and naming Anton Shepelev <anton.txt@gmail.moc> - 2023-09-10 23:49 +0300
Re: Dymamic arrays: memory management and naming Kaz Kylheku <864-117-4973@kylheku.com> - 2023-09-10 21:25 +0000
Re: Dymamic arrays: memory management and naming Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-09-12 16:07 -0700
Re: Dymamic arrays: memory management and naming Anton Shepelev <anton.txt@gmail.moc> - 2023-09-17 00:44 +0300
Re: Dymamic arrays: memory management and naming Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-09-17 16:51 -0700
Re: Dymamic arrays: memory management and naming Anton Shepelev <anton.txt@gmail.moc> - 2023-09-19 01:10 +0300
Re: Dymamic arrays: memory management and naming Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-09-19 07:58 -0700
Re: Dymamic arrays: memory management and naming Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-09-19 10:33 -0700
Re: Dymamic arrays: memory management and naming Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2023-09-19 15:08 -0700
Re: Dymamic arrays: memory management and naming "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2023-09-19 15:35 -0700
Re: Dymamic arrays: memory management and naming Kaz Kylheku <864-117-4973@kylheku.com> - 2023-09-19 22:49 +0000
Re: Dymamic arrays: memory management and naming Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-09-19 22:30 -0700
Re: Dymamic arrays: memory management and naming Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2023-09-20 02:46 -0700
Re: Dymamic arrays: memory management and naming Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-09-20 07:06 -0700
Re: Dymamic arrays: memory management and naming Kaz Kylheku <864-117-4973@kylheku.com> - 2023-09-20 21:03 +0000
Re: Dymamic arrays: memory management and naming Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-09-25 14:08 -0700
Re: Dymamic arrays: memory management and naming Kaz Kylheku <864-117-4973@kylheku.com> - 2023-09-25 21:27 +0000
Re: Dymamic arrays: memory management and naming Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-09-19 22:17 -0700
Re: Dymamic arrays: memory management and naming Anton Shepelev <anton.txt@gmail.moc> - 2023-09-24 00:39 +0300
Re: Dymamic arrays: memory management and naming Blue-Maned_Hawk <bluemanedhawk@invalid.invalid> - 2023-09-23 21:48 +0000
Re: Dymamic arrays: memory management and naming James Kuyper <jameskuyper@alumni.caltech.edu> - 2023-09-24 00:15 -0400
Re: Dymamic arrays: memory management and naming Spiros Bousbouras <spibou@gmail.com> - 2023-09-24 11:48 +0000
Re: Dymamic arrays: memory management and naming Kaz Kylheku <864-117-4973@kylheku.com> - 2023-09-24 16:08 +0000
Re: Dymamic arrays: memory management and naming Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-09-25 13:21 -0700
Re: Dymamic arrays: memory management and naming Kaz Kylheku <864-117-4973@kylheku.com> - 2023-09-25 21:06 +0000
Re: Dymamic arrays: memory management and naming Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-09-25 18:43 -0700
Re: Dymamic arrays: memory management and naming Kaz Kylheku <864-117-4973@kylheku.com> - 2023-09-25 23:14 +0000
Re: Dymamic arrays: memory management and naming Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-09-25 19:00 -0700
Re: Dymamic arrays: memory management and naming Kaz Kylheku <864-117-4973@kylheku.com> - 2023-09-26 02:38 +0000
Re: Dymamic arrays: memory management and naming Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-09-25 23:42 -0700
Re: Dymamic arrays: memory management and naming Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2023-09-25 19:38 -0700
Re: Dymamic arrays: memory management and naming Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-09-25 23:41 -0700
Re: Dymamic arrays: memory management and naming Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2023-09-26 02:42 -0700
Re: Dymamic arrays: memory management and naming Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-10-03 03:29 -0700
Re: Dymamic arrays: memory management and naming Kaz Kylheku <864-117-4973@kylheku.com> - 2023-09-24 16:11 +0000
Re: Dymamic arrays: memory management and naming James Kuyper <jameskuyper@alumni.caltech.edu> - 2023-09-24 12:28 -0400
Re: Dymamic arrays: memory management and naming Kaz Kylheku <864-117-4973@kylheku.com> - 2023-09-24 17:10 +0000
Re: Dymamic arrays: memory management and naming James Kuyper <jameskuyper@alumni.caltech.edu> - 2023-09-24 13:56 -0400
Re: Dymamic arrays: memory management and naming Phil Carmody <pc+usenet@asdf.org> - 2023-09-30 13:50 +0300
Re: Dymamic arrays: memory management and naming Spiros Bousbouras <spibou@gmail.com> - 2023-10-01 17:43 +0000
Re: Dymamic arrays: memory management and naming Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-09-25 09:21 -0700
Re: Dymamic arrays: memory management and naming Kaz Kylheku <864-117-4973@kylheku.com> - 2023-09-25 18:06 +0000
Re: Dymamic arrays: memory management and naming Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-09-25 15:24 -0700
Re: Dymamic arrays: memory management and naming Kaz Kylheku <864-117-4973@kylheku.com> - 2023-09-25 23:49 +0000
Re: Dymamic arrays: memory management and naming Kaz Kylheku <864-117-4973@kylheku.com> - 2023-09-26 00:07 +0000
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