I wasn't aware any file handles were inherited. Where do I find them
to close? (...Unix rabbit).

(The same code works without trouble in j602.)

On Tue, Feb 14, 2012 at 9:25 PM, Raul Miller <rauldmil...@gmail.com> wrote:
> Have you tried closing the file handles the child process inherits
> from the parent?
>
> --
> Raul
>
> On Tue, Feb 14, 2012 at 4:04 PM, Ian Clark <earthspo...@gmail.com> wrote:
>> 2!:1 is not truly asynchronous in JHS, it seems. The net result is
>> that I cannot see how to launch a child process without the session
>> hanging until the child terminates.
>>
>> Strange to say, the jijx session immediately resumes, and will accept
>> (re-)input. But it will not execute the inputted expression. Inside a
>> verb however, execution continues past 2!:1 (which successfully forks
>> the child process), but after completion of the verb the session is
>> silent (until the child process is terminated).
>>
>> Example:
>> Suppose test6s.wav is a sound file lasting 6 seconds. (Chosen to last
>> long enough to allow "i.6" to be entered.)
>>
>>   2!:1 'afplay ~/wav/test6s.wav &'
>>   i.6
>> 0 1 2 3 4 5
>>
>> The jijx accepts i.6 but hangs until test6s.wav finishes playing. Only
>> then does 0 1 2 3 4 5 appear.
>>
>>   JVERSION
>> Engine: j701/2011-01-10/11:25 build: Feb  6 2011 16:16:29
>> Library: 7.01.055
>> Platform: Darwin 64
>> Installer: j701a_mac64.dmg
>> ----------------------------------------------------------------------
>> For information about J forums see http://www.jsoftware.com/forums.htm
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
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