[linux-audio-user] jackd and /tmp

[Paul Davis]

On Mon, 2007-03-12 at 16:10 -0400, Eric Dantan Rzewnicki wrote:
> On Mon, Mar 12, 2007 at 08:48:14PM +0100, Atte André Jensen wrote:
> > Lee Revell wrote:
> > 
> > >Yes - compile it to use /dev/shm.
> > 
> > I'm doing that as I type.
> > 
> > But shouldn't that be possible to specofy as an runtime option? "jackd 
> > --help" seems to suggest no, however the name of the config option 
> > "--with-default-tmpdir" suggests that is merely a default dir hence that 
> > some other dir can be specified later (=at runtime)...
> 
> When you build jack you are building both jackd, the server, and
> libjack, the library that clients use to talk to the server. Both need
> to know where the tmpdir lives because they use it to communicate with
> each other. Hence, it is a compile time option. 

actually, not any more. as of 0.103, clients determine where the
directory by invoking jackd -l (you can try it yourself). however, this
doesn't help much, since you could easily do this:

  % jackd --tmpdir=/foo/bar &  // successful startup
  % someJackClient
       [ ... runs jackd -l .... ]
       [ ... gets default answer, not /foo/bar ... ]

so, the change in discovery technique notwithstanding, Eric's point is
still fundamentally correct.

--p