cvs commit: src/sys/kern kern_thr.c syscalls.master src/sys/sys thr.h

[Daniel Eischen]

On Thu, 16 Aug 2007, Xin LI wrote:

> Daniel Eischen wrote:
>> On Thu, 16 Aug 2007, David Xu wrote:
>> 
>>> davidxu     2007-08-16 05:26:42 UTC
>>>
>>>  FreeBSD src repository
>>>
>>>  Modified files:
>>>    sys/kern             kern_thr.c syscalls.master
>>>    sys/sys              thr.h
>>>  Log:
>>>  Add thr_kill2 syscall which sends a signal to a thread in another 
>>> process.
>> 
>> I do not think this is a good idea.  There is no such thing in Solaris,
>> only Linux seems to have this hideous idea of an API.
>
> I think this would be helpful for applications like Wine.  Is there any other 
> way to implement the semantics?

I realize what it's for, and I don't agree that it belongs in the
tree.  There are other forms of interprocess communication, pipes,
sockets, even msg queues.  I'm sure you can find a few ways to send
a message to a process to say "send signal X to thread Y" if you
really wanted to.  It looks like even Linux makes you use a thread
group, not a thread.

I don't see where this was discussed on -arch or -current, but
maybe I missed that thread.

--
DE