You can use the "-jijx" flag to keep a console window from starting, or use
jconsole.
On Sun, Jan 8, 2012 at 11:31 PM, Marshall Lochbaum <mwlochb...@gmail.com>wrote:
> Well, fork also works in Windows (although a console actually pops up,
> which is usually unintended). I don't think there's another clearer
> cross-platform solution, although I would be very happy to hear about one.
>
> Marshall
>
> On Sun, Jan 8, 2012 at 11:19 PM, bill lam <bbill....@gmail.com> wrote:
>
> > I myself found the names fork and spawn as used in jtask confusing and
> > contradicted to that in documentation for 2!:0 and 2!:1. The meaning or
> at
> > least the intention to use directly 2!:0 and 2!:1 is more clear.
> >
> > There was discussion on this subject some years ago. Please search forum
> > archive if you are interested.
> >
> > Вск, 08 Янв 2012, Marshall Lochbaum писал(а):
> > > In J701, fork_jtask_[load'task' accomplishes this. fork is defined as
> > > fork_jtask_ =: [: 2!:1 '(' , ')&' ,~ ]
> > >
> > > However, in J602 it is just an alias for 2!:1, so it's best to assign
> as
> > > above in Unix if both J602 and J701 will be used.
> > >
> > > Marshall
> > >
> > > On Sun, Jan 8, 2012 at 10:46 PM, bill lam <bbill....@gmail.com> wrote:
> > >
> > > > It is a feature of *nix shells that an ending "&" in the command line
> > will
> > > > make the process forked. eg,
> > > >
> > > > 2!:1 '/Applications/TextEdit.app/Contents/MacOS/TextEdit &'
> > > >
> > > > Пнд, 09 Янв 2012, Ian Clark писал(а):
> > > > > I try:
> > > > >
> > > > > 2!:1 '/Applications/Google\ Chrome.app/Contents/MacOS/Google\
> Chrome'
> > > > >
> > > > > Chome starts up... the J session freezes. It only unfreezes when I
> > quit
> > > > Chrome.
> > > > >
> > > > > This happens with all apps I can launch from the UNIX command line.
> > Eg:
> > > > >
> > > > > 2!:1 '/Applications/TextEdit.app/Contents/MacOS/TextEdit'
> > > > >
> > > > >
> > > > >
> > > > > On Mon, Jan 9, 2012 at 2:43 AM, bill lam <bbill....@gmail.com>
> > wrote:
> > > > > > Try, eg,
> > > > > >
> > > > > > 2!:1 'firefox &'
> > > > > >
> > > > > > Пнд, 09 Янв 2012, Ian Clark писал(а):
> > > > > >> AFAICS the purpose of 2!:1 (spawn) is to launch an asynchronous
> > > > > >> process, eg a separate, parallel J session, and resume
> > immediately it
> > > > > >> is launched. Am I right?
> > > > > >>
> > > > > >> On my Mac it doesn't do that. (I can't establish what it does
> > under
> > > > > >> Windows because I don't have a Windows machine just now).
> > > > > >>
> > > > > >> Sure, it starts the specified process, but then the original J
> > session
> > > > > >> freezes solid until the spawned process terminates. This
> behavior
> > is
> > > > > >> no different from 2!:0 except to discard any returned value.
> > > > > >>
> > > > > >> Absence of this facility is preventing me from doing a lot of
> the
> > > > > >> things I want to. In particular I can't play a sound without my
> > app
> > > > > >> hanging until the sound has finished playing. Nor can I write a
> > server
> > > > > >> in J and have it fire off a client. I have to launch the client
> > > > > >> manually.
> > > > > >>
> > > > > >> Has nobody reported this behavior before? Any chance of getting
> it
> > > > > >> fixed? Anyone know a workaround (such as a dll/dylib call)?
> > > > > >>
> > > > > >> JVERSION
> > > > > >> Installer: j602a_mac_intel.dmg
> > > > > >> Engine: j602/2008-03-03/16:45
> > > > > >> Library: 6.02.057
> > > > > >>
> > > > > >> JVERSION
> > > > > >> Engine: j701/2011-01-10/11:25 build: Feb 6 2011 16:16:29
> > > > > >> Library: 7.01.052
> > > > > >> Platform: Darwin 64
> > > > > >> Installer: j701a_mac64.dmg
> > > > > >>
> > > > > >> InstallPath: /Applications/j64-701
> > > > > >>
> > ----------------------------------------------------------------------
> > > > > >> For information about J forums see
> > > > http://www.jsoftware.com/forums.htm
> > > > > >
> > > > > > --
> > > > > > regards,
> > > > > > ====================================================
> > > > > > GPG key 1024D/4434BAB3 2008-08-24
> > > > > > gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3
> > > > > >
> > ----------------------------------------------------------------------
> > > > > > For information about J forums see
> > http://www.jsoftware.com/forums.htm
> > > > >
> > ----------------------------------------------------------------------
> > > > > For information about J forums see
> > http://www.jsoftware.com/forums.htm
> > > >
> > > > --
> > > > regards,
> > > > ====================================================
> > > > GPG key 1024D/4434BAB3 2008-08-24
> > > > gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3
> > > >
> ----------------------------------------------------------------------
> > > > For information about J forums see
> http://www.jsoftware.com/forums.htm
> > > >
> > > ----------------------------------------------------------------------
> > > For information about J forums see http://www.jsoftware.com/forums.htm
> >
> > --
> > regards,
> > ====================================================
> > GPG key 1024D/4434BAB3 2008-08-24
> > gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3
> > ----------------------------------------------------------------------
> > For information about J forums see http://www.jsoftware.com/forums.htm
> >
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
>
--
Devon McCormick, CFA
^me^ at acm.
org is my
preferred e-mail
----------------------------------------------------------------------
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