Messages in this thread | | | Subject | Re: SCO: "thread creation is about a thousand times faster than on native Linux" | Date | Thu, 24 Aug 2000 19:21:31 +0100 (BST) | From | Alan Cox <> |
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> On Thu, Aug 24, 2000 at 02:01:55PM +0200, Andi Kleen wrote: > > POSIX wants to send the signal to the first thread in the group who > > doesn't have it blocked. > > To _any_ thread in the group that does not have it blocked.
Any-single or any-all ?
See you need to send them to a predictable thread for real time signals to preserve queue time order semantics on signal queues. Otherwise you just broke the entire asynchronous I/O model
> > Several signals are special cased in POSIX, e.g. SIGSTOP, and need to > > handled by all threads in the group. > > I think that logic needs to be in the root thread.
The root thread cant catch SIGSTOP and reprocess it
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