On 10 February 2016, Bram Moolenaar <b...@moolenaar.net> wrote:
>
> Marius Gedminas wrote:
>
> > On Tue, Feb 09, 2016 at 10:24:55PM +0200, LCD 47 wrote:
> > > > - A socket (what ch_open() currently does)
> > > > - A pipe (only possible with an associated job) connected to
> > > > stdin/stdout/stderr.
> > >
> > > There are also UNIX domain sockets (a.k.a. named pipes), which
> > > you get essentially for free once you have the code for INET
> > > sockets. They are as efficient as (unnamed) pipes.
> >
> > Nitpick: Unix domain sockets and named pipes (aka FIFOs) are two
> > different concepts.
> >
> > http://linux.die.net/man/7/unix 4/fifo
>
> Once opened don't they work practially the same? As in using
> select(), read(), write() and things like that. Errors can be
> different, but that is a minor thing.
There are:
(1) INET sockets
(2) UNIX domain sockets
(3) FIFOs.
(1) and (2) are essentially the same, while (3) are something
different. Marius's objection is that "named pipes" refer to (3),
rather than (2), at least these days (there were conflicting names
between commercial UNIXen in the past).
/lcd
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