Yes, it will be available in the next update. I previously used wd'timer' in a web server, but later I turned it into a window service and UI was no longer visible, so that I replace j.exe by jconsole.exe , wd'timer' by sleep loop. Perhaps it worked because most bugs had been fixed earlier.
Птн, 06 Янв 2012, Ian Clark писал(а): > Thanks Bill. > > usleep is good to know. I have taken note of its technique. Did you > say it will become part of the base library? > > I've tried it out in jhs. I can't see it behaves any differently from, say: > 2!:1 'sleep 3' > or: > (6!:3) 3 > -they all freeze the jijx window. In operational use that won't matter > for a faceless server. But for dev/debug it's nice to have the session > available whilst the server is listening, as I get with the j602 > versions of my apps. Eric's technique seems to solve the problem. > > On Fri, Jan 6, 2012 at 1:33 AM, bill lam <bbill....@gmail.com> wrote: > > For jconsole applications that have no UI, the infinite loop can emulate an > > inaccurate timer, > > > > while 1[usleep 20000 do. NB. 0.02s > > dotask1'' > > dotask2'' > > ... > > end. > > > > where usleep is (beware of wrapping) > > > > NB. ========================================================= > > NB. *usleep v sleep for n microseconds > > NB. linux max value around 33 minutes > > NB. windows minimum resolution in milliseconds. > > 3 : 0'' > > if. 'Linux'-:UNAME do. usleep=: 3 : '''libc.so.6 usleep > i i''&(15!:0) >.y' > > elseif. 'Darwin'-:UNAME do. usleep=: 3 : '''libc.dylib usleep > i > > i''&(15!:0) >.y' > > elseif. do. usleep=: 3 : '0: ''kernel32 Sleep > n i''&(15!:0) >.y % 1000' > > end. > > EMPTY > > ) > > > > But I guess this method does not work with jhs yet, the javascript timer as > > suggested by Eric should be more compatibile with jhs. > > > > For gtk, timer is already supported, please refer to plot demo or opengl > > demo. (grep for the word 'timeout') > > > > Чтв, 05 Янв 2012, Ian Clark писал(а): > >> > Ian - a good place to study j use of dylib in Darwin would be in > >> > ~/addons/data/jmf.ijs Maybe you can find happiness there. > >> > >> Now that looks sensible! > >> > >> Searching the code for 'dylib' I learn that cd (15!:0) can access > >> dylibs, here mostly libc.dylib, just like it does in Windows (with of > >> course a different argument syntax). Why didn't I spot that before? > >> Now I just need to brush up my knowledge of the standard C library > >> (=libc). A simple matter of wading thru the Xcode documentation. > >> > >> > Meanwhile, I'm a little unclear on what you are trying to do. > >> > >> Let me try to explain as briefly as I can. > >> > >> I have a bunch of j602 apps with fine-tuned jwd UIs which I want to > >> migrate to j7. Including a few cherished app dev utilities. "Oh, just > >> rewrite them all in jgtk" ... sounds plausible if you say it quickly. > >> > >> I reasoned, as a first step: if I can split off the jwd UI to run in > >> an asynchronous process communicating via a link that's both general > >> and docile, then that's half the battle. I can then replace the UIs at > >> my leisure with ones written in Cocoa / Xcode -- or jgtk -- or > >> html/javascript... you name it. Perhaps all of these, for a > >> distributed app. The now-faceless apps will like-as-not run unchanged > >> under J7, as "servers", and they'll even work with their old j601 UIs, > >> while I develop plug-compatible replacements. That's if I feel the > >> urge to. > >> > >> Well, I'm pleased to report I can now split even a complex jwd app > >> into client+server, without having to re-engineer the app's UI (too > >> much). My lo-tech link is sweet and docile: you can interact with both > >> client and server via their J sessions and you hardly realise they're > >> alive and talking to each other. A wiki case-study will follow > >> shortly. > >> > >> But... my technique doesn't port readily to j7 because of one thing: > >> no wd'timer'. > >> > >> Actually this isn't such a show-stopper as I'm making out. I can > >> always run my "server" duty-cycle instead in a tight loop, as you do > >> yours (...6!:3 is "tight" to me :). The back-end of the app, I reason, > >> will not need that much debugging by now, and I can do most of that > >> back in my cosy j602 environment. But I've got mighty used to the > >> elbow-room that wd'timer' affords me. > >> > >> On Thu, Jan 5, 2012 at 7:13 PM, Joey K Tuttle <j...@qued.com> wrote: > >> > Ian - a good place to study j use of dylib in Darwin would be in > >> > ~/addons/data/jmf.ijs Maybe you can find happiness there. > >> > > >> > Meanwhile, I'm a little unclear on what you are trying to do. I assume > >> > you have a continuously available j task that picks up things to do from > >> > some queue - but you don't want it to be in a dead loop checking the > >> > queue. I run a task like that in my Linux server and it has the lines: > >> > > >> > while. * 6!:3 ] 1 do. > >> > if. (work to do) do. > >> > massage some data (actually quite a lot... but sporadic) > >> > end. > >> > end. > >> > > >> > This task runs as a #! jconsole shell and I just looked to see that it > >> > has been running for 100 days and has accumulated 20 minutes and 15 > >> > seconds of CPU time (on a 400 Mhz pentium - so pretty small overhead). > >> > Of course, the CPU usage is dependent on the work that gets done - but > >> > since (as you pointed out in a different message) j is single threaded, > >> > this seems to me to be a way to approach the kind of thing you seem to > >> > be describing. > >> > > >> > On 2012/01/05 09:54 , Ian Clark wrote: > >> >> Thanks, David. > >> >> > >> >> But this uses 'dll'. AFAIK there's no comparable way of calling dylibs > >> >> in Darwin. > >> >> > >> >> On Thu, Jan 5, 2012 at 5:44 PM, David Mitchell<davidmitch...@att.net> > >> >> wrote: > >> >>> Here is a version that works with J602 and J701 jconsole. It does not > >> >>> work with > >> >>> jhs or jgtk. I have not tested it extensively and it may have side > >> >>> effects or > >> >>> bugs that I haven't found yet. > >> >>> > >> >>> http://www.jsoftware.com/jwiki/Scripts/WindowsTimer > >> >>> > >> >>> On 1/5/2012 8:27, Ian Clark wrote: > >> >>>> How do I get a timer in j701 jhs (or jconsole)? > >> >>>> > >> >>>> I've been assuming wd (11!:0) doesn't work at all in j701 (in j602 > >> >>>> you'd do: 11!:0 'timer 3' for a callback in 3 secs). > >> >>>> > >> >>>> BTW J701 help > >> >>>> (http://www.jsoftware.com/docs/help701/dictionary/dx011.htm) > >> >>>> still refers to 11!:0 but I assume that's just because it's been > >> >>>> overlooked...? > >> >>>> > >> > > >> > ---------------------------------------------------------------------- > >> > 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
