Re: test_and_set_bit and friends ?

Robert Hancock
2007-10-24T14:25:59Z

> Mark Hounschell wrote:
>> These calls apparently are gone. Can someone tell me why and what are
>> the replacements.
>>
>> Thanks in advance
>> Mark
>>
>
> I got no response from the glibc people on this and the kernel-newbies
> list appears dead so I thought I'd try here since these calls are/were
> actually kernel based to begin with. Why are they no longer available in
> user space and what is one supposed to use now?

In general, none of the kernel synchronization-type functions should
have been used in userspace since they often depend on infrastructure
which is only in the kernel in order to work properly. The new headers
installation system strips out any code intended for kernel use only
from the userspace-visible headers.

(Not to mention the licensing issues - the kernel is GPL, not LGPL, so
only GPL programs could have legally done so in the first place.)

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Robert Hancock Saskatoon, SK, Canada
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