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SubjectRE: Synchronous signal delivery..
On Fri, 2003-02-14 at 05:55, Giuliano Pochini wrote:
> > It's a generic "synchronous signal delivery" method, and it uses a
> > perfectly regular file descriptor to deliver an arbitrary set of signals
> > that are pending.
> >
> > It adds one new system call:
> >
> > fd = sigfd(sigset_t * mask, unsigned long flags);
> IMHO it's not simply a signal delivery system, it's a message queue. It's
> possible to deliver any kind of data to the process, and the fd can be
> used to send data to other processes as well.

IMHO I agree, it would be real nice to be able to expose signals to
other processes using a socket type of interface. Even the kernel
could expose certain internal signals to user space programs such
as VM pressure.

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