Am 23.06.2010 15:34, schrieb Henry Vermaak:
On 23 June 2010 14:22, Henry Vermaak<[email protected]> wrote:
On 23 June 2010 14:13, Daniël Mantione<[email protected]> 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.
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And that one is currently not supported by FPC (at least from 2.x on,
because no one updated the cpu units for this architecture).
Please correct me if I'm wrong.
Regards,
Sven
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