[fpc-devel] Threading support and C library under Linux/Unix

[Henry Vermaak]

On 23 June 2010 14:22, Henry Vermaak <henry.vermaak at gmail.com> wrote:
> On 23 June 2010 14:13, Daniël Mantione <daniel.mantione at freepascal.org> wrote:
>>
>>
>> Op Wed, 23 Jun 2010, schreef Henry Vermaak:
>>
>>> A futex syscall doesn't know anything about threads, it's for locking.
>>> Perhaps I'm misunderstanding you?
>>
>> I have should have written "futex" instead of "threads". With a Futex, you
>> only call the Futex syscall, if the Futex is locked. You still have to test
>> wether the Futex is locked in userspace, and you that with the interlocked
>> assembler instructions. This assembler implementation must be implemented
>> for each architecture (though abstractions can probably be used, we already
>> have many interlockedxxxxx procedures).
>
> Ah, I see.  I've seen the interlocked procedures in the rtl, we seem
> to have them for quite a couple arches (at least all the ones that
> support linux).

Ops, except m68k.