Re: cmpxchgl on x86?
Re: cmpxchgl on x86?
- Subject: Re: cmpxchgl on x86?
- From: David Leimbach <email@hidden>
- Date: Fri, 24 Jun 2005 07:52:19 -0700
On 6/24/05, Jonas Maebe <email@hidden> wrote:
>
> On 24 jun 2005, at 16:40, David Leimbach wrote:
>
> >> Also, there are compare-and-swap routines already in libSystem:
> >>
> >> <libkern/OSAtomic.h>
> >>
> >> /* Compare and swap. They return true if the swap occured.
> >> */
> >> bool OSAtomicCompareAndSwap32( int32_t oldValue, int32_t newValue,
> >> int32_t *theValue );
> >> bool OSAtomicCompareAndSwap32Barrier( int32_t oldValue, int32_t
> >> newValue, int32_t *theValue );
> >
> > Seems a shame to have to include an entire other framework just for a
> > single assembly instruction :). It'd be really cool if apple had a
> > lighter weight wrapper around such lock code :).
>
> libSystem = libc
Note he wants me to use libkern. Which is it? :)
>
>
> Jonas
>
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