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Groups > comp.lang.c++ > #81364
| From | Bonita Montero <Bonita.Montero@gmail.com> |
|---|---|
| Newsgroups | comp.lang.c++ |
| Subject | Re: DCAS-supplement ? |
| Date | 2021-09-21 09:31 +0200 |
| Organization | A noiseless patient Spider |
| Message-ID | <sic1no$imo$1@dont-email.me> (permalink) |
| References | (2 earlier) <si94nf$vf0$1@dont-email.me> <si95lr$1lsg$1@gioia.aioe.org> <si961b$mhl$1@dont-email.me> <si97l6$j9j$1@dont-email.me> <sib3ug$10aj$1@gioia.aioe.org> |
Am 21.09.2021 um 01:02 schrieb Chris M. Thomasson:
> On 9/19/2021 10:53 PM, Bonita Montero wrote:
>>> I put the compare_exchangE_weak-code into a noinline function:
>>>
>>> struct uip_pair
>>> {
>>> uip_pair() = default;
>>> uip_pair( uintptr_t first, uintptr_t second ) :
>>> first( first ),
>>> second( second )
>>> {
>>> }
>>> uintptr_t first, second;
>> If I add ...
>> uintptr_t i, j, k;
>> ... here the structure is still only 8 bytes larger than it
>> should be. Maybe MSVC does something like STM on this structure.
>>> };
>
> I don't know why they just don't use CMPXCHG16B directly. Look at the
> disassembly of:
>
> https://docs.microsoft.com/en-us/windows/win32/api/winnt/nf-winnt-interlockedcompareexchange128
Can you please respond according to what I wrote ??? It's
about the assembly of the code I posted and not this intrinsic.
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DCAS-supplement ? Bonita Montero <Bonita.Montero@gmail.com> - 2021-09-19 18:13 +0200
Re: DCAS-supplement ? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2021-09-19 15:29 -0700
Re: DCAS-supplement ? Bonita Montero <Bonita.Montero@gmail.com> - 2021-09-20 07:03 +0200
Re: DCAS-supplement ? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2021-09-19 22:19 -0700
Re: DCAS-supplement ? Bonita Montero <Bonita.Montero@gmail.com> - 2021-09-20 07:26 +0200
Re: DCAS-supplement ? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2021-09-19 22:40 -0700
Re: DCAS-supplement ? Bonita Montero <Bonita.Montero@gmail.com> - 2021-09-20 07:53 +0200
Re: DCAS-supplement ? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2021-09-20 16:02 -0700
Re: DCAS-supplement ? Bonita Montero <Bonita.Montero@gmail.com> - 2021-09-21 09:31 +0200
Re: DCAS-supplement ? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2021-09-21 16:09 -0700
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