I was able to get a similar result as the one you saw with jhs7 on OpenSuse with firefox and Sox play. I also discovered that jconsole7 and jgtk7 on OpenSuse return from the spawn and display the i.6 result while the sound is playing.
On win7, I installed sox play.exe and found that fork_jtask_ 'D:\sox-14-3-2\play -q d:\test.wav rate -v 44100' would return immediately and display the results of i.6 while the sound was playing on jconsole7, jgtk7 and jhs7 with firefox. On 2/14/2012 16:04, Ian Clark 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
