Daniel Eischen wrote:
On Sat, 18 Aug 2007, Robert Watson wrote:
On Sat, 18 Aug 2007, Tijl Coosemans wrote:
Perhaps it should be stressed in documentation that this syscall is
only meant for Wine and to be removed at some point when better
solutions become available. I want to test this sigqueue solution
some more, because the indirection in signal delivery causes trouble
when a thread signals itself. I guess this would have to be
special-cased somehow then.
As a general rule, removing system calls is discouraged as it breaks
backward compatibility allowing newer kernels to run older
applications, so I think we should avoid adding a system call with the
intent to remove it in mind at the time it's added :-). While
thr_kill2() is imperfect from several perspectives, it is certainly a
minimalist and logical construction that can be easily understood, and
that's pretty valuable.
You can say that about a lot of APIs, but that doesn't mean we should add
them. This is a bit of a hack to satisfy one application (Wine) when there
are other (perhaps harder) ways to skin the cat. We certainly don't want
anything else using this API, so I'd advocate removing it.
I'm in strong agreement here. David?
Scott
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