Excellent work David! A thousand Thanks. Gary On Tue, Jan 26, 2021, 12:06 PM s...@pandora.be <s...@telenet.be> wrote:
> > All, > > The first program > > $ cat tst.st > " Ref: Blue Book pg. 266 > This program works. Type gst tst.st at the Linux > prompt and find out for yourself. > " > [[true] whileTrue: [ > (Time now) printNl . > (Delay forSeconds: 1) wait > ] > ] value > > continues forever for me (until I control-C stop gst) and prints the > current time every second. > > The second program > > $ cat tstX.st > " Ref: Blue Book pg. 266 > This program doesn't work. Type gst tstX.st at the Linux > prompt and find out for yourself. > " > [[true] whileTrue: [ > (Time now) printNl . > (Delay forSeconds: 1) wait > ] > ]fork > > Just prints one line (the current time) (1 line) and then exits for me. > > However it is perhaps not a bad idea to try to add a Delay forSeconds:10 > wait after the fork in the main process. > > If the main process waits another 10 seconds, then it prints 10 lines for > me, I just added a line after the fork: > > fork. > (Delay forSeconds:10) wait > > Also I suppose it is possible to wait for the forked process itself so > that it continues indefinitely. > > The problem is that the main process has exited and so the forked process > is also gone. > > However if the main GST process keeps around, then the above second > program also works. > > Regards, > David Stes > > > ----- Op 26 jan 2021 om 13:20 schreef Mark Bratcher mdbra...@gmail.com: > > > Hi Holger > > > > I tried Gary’s test samples on 3.2.91 and it exhibits the same behavior > as > > 3.2.5. > > > > Mark > > > > Sent from [ https://go.microsoft.com/fwlink/?LinkId=550986 | Mail ] for > Windows > > 10 > > > > From: [ mailto:hol...@freyther.de | Holger Freyther ] > > Sent: Tuesday, January 26, 2021 2:12 AM > > To: [ mailto:gary.highber...@gmail.com | Gary Highberger ] > > Cc: [ mailto:help-smalltalk@gnu.org | help-smalltalk ] > > Subject: Re: Processes > > > > Hi Gary! > > > > How did you get GNU Smalltalk 3.2.5? On the surface this sounds like a > problem > > already fixed[1] in the development branch of GNU Smalltalk? Could you > try to > > cherry-pick this[1] and see if the problem persists? > > > > thank you > > > > holger > > > > [1] > > > http://git.savannah.gnu.org/cgit/smalltalk.git/commit/?id=72ada189aba0283c551ead16635c1983968080b8 > > > >> On 26. Jan 2021, at 10:53, Gary Highberger <gary.highber...@gmail.com> > wrote: > > > >> > > > >> Hi Help-Smalltalk, > > > >> > > > >> If processes aren't supported in 3.2.5 then read no further :-) > > > >> > > > >> Forks or Delays might be broken in 3.2.5. I totally hope I'm wrong or > that > > > >> there's a clean workaround. > > > >> > > > >> For what I can tell, Forked* infinite loop processes containing a Delay > > > >> won't run.* > > > >> > > > >> Links to two Smalltalk programs based on an infinite loop, Delay, fork, > > > >> example from the Bluebook follow: > > > >> > > > >> https://www.dropbox.com/s/rs4iobnhh6vzmc4/tst.st?dl=0 > > > >> > > > >> https://www.dropbox.com/s/0zybbef44e45w3c/tstX.st?dl=0 > > > >> > > > >> At the Linux prompt enter gst tst.st to observe desired behavior. > > > >> > > > >> At the Linux prompt enter gst tstX.st to see the failed fork behavior. > > > >> > > > >> Any help you can provide will be greatly appreciated! > > > >> > > > >> Thank you, > > > >> > > > > > Gary Highberger >
