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From "Echlin, Robert" <Robert.Ech...@windriver.com>
Subject RE: Are multiple targets run in order, or in parallel?
Date Mon, 08 Aug 2011 17:35:53 GMT
Ooops.
Spelling correction below caused by the spell checker - I clicked "change" by mistake.
wk. should have been "wc"

--
Rob Echlin, Documentation Systems Architect, Wind River
direct: +1.613.270.5796 | Skype video: rob.echlin.wr | robert.echlin@windriver.com


> -----Original Message-----
> From: Echlin, Robert [mailto:Robert.Echlin@windriver.com]
> Sent: Monday, August 08, 2011 1:34 PM
> To: Ant Users List
> Subject: RE: Are multiple targets run in order, or in parallel?
> 
> Hi guys,
> Thanks, Dominique, for the reminder about order of execution being
> dependent on dependencies.
> I remember that about dependencies declared in a target.
> I am surprised that there isn't a line in the "Running Ant" page referring to
> the targets page if the same ordering information applies.
> 
> Responses:
> No, I don't know what executors are.
> Unrelated: Reading the "targets" docs page just now told me of a new
> feature called "extension points", which sounds valuable.
> 
> In my situation:
> - target 1 removes all files from the output folders
> - target 2 generates link catalogs for the current document set
> - target 3 builds the output (HTML, PDF, and Eclipse plugins) using the link
> catalogs
> 
> So at least the first one can't possibly depend on later ones directly. :-)
> And it doesn't depend on anything, actually.
> My concern is that it takes several seconds to run, so it could kill the first link
> catalog, (or maybe parts of it?) and I might not know.
> 
> Regarding complexity of dependencies, I ran:
>    grep "<target " *.xml | wk. -l
grep "<target " *.xml | wc -l
>  It says we have 233  targets in the system at the moment, so more complex
> analysis would not be done by visual inspection.
> :-)
> 
> Thanks to Dominique and Scot  for the suggestions to try it  myself - I would
> do that with a simplified build.
> 
> Rob
> 
> 
> 
> 
> --
> Rob Echlin, Documentation Systems Architect, Wind River
> direct: +1.613.270.5796 | Skype video: rob.echlin.wr
> | robert.echlin@windriver.com
> 
> > -----Original Message-----
> > From: Dominique Devienne [mailto:ddevienne@gmail.com]
> > Sent: Monday, August 08, 2011 1:03 PM
> > To: Ant Users List
> > Subject: Re: Are multiple targets run in order, or in parallel?
> >
> > On Mon, Aug 8, 2011 at 10:59 AM, Echlin, Robert
> > <Robert.Echlin@windriver.com> wrote:
> > >   "ant target1 target2 target3"
> > > Will target1 be guaranteed to be complete before target2 is run?
> >
> > Yes, with two "but"s:
> > 1) If you use the default executor. If you don't know what an executor
> > is, you most likely are :)
> > 2) If target1 declared a dependency on target2 or target3, directly or
> > not, they could execute in a different order.
> >
> > Note running "ant t1 t2 t3" is almost equivalent to running "ant t1",
> > "ant t2", "ant t3", in the sense that the dependencies of t1 are
> > executed before t1 itself, then the dependencies of t2 before t2, *as
> > if* t1 hasn't been run before (modulo properties/references set by
> > t1), which means that some dependent targets (e.g. init) may execute
> > several times (unless "protected" from multiple executions by a
> > property). So if target1 depends on target2, order of execution would
> > be target2 (from the target1 dependency), target1, target2 (from the
> > explicit cli invocation), target3. At least that's how I recall this
> > works, but you should double-check it yourself. --DD
> >
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> 
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