Well, if I've saved "serious time" by 10:30am, I'm happy indeed.
I've got another depends-on-your-hardware-but-I-saw-4min-saving (for
work-to-do rebuild of samples, so no gain if you use buildonly) out to scott
already, though it's small enough that anyone who wants to review at
http://gwt-code-reviews.appspot.com/36802/show can help Scott do real work
instead of ant file review.



2009/6/11 Joel Webber <j...@google.com>

> w00t indeed. This just saved me serious time this morning already.
>
>
> On Wed, Jun 10, 2009 at 6:35 PM, Scott Blum <sco...@google.com> wrote:
>
>> w00t!!
>>
>>
>> On Wed, Jun 10, 2009 at 5:47 PM, Freeland Abbott <fabb...@google.com>wrote:
>>
>>> As of r5537, my no-change "ant build" takes 1:55 instead of 19:43, and
>>> there's still some easy work to do, albeit with obviously diminishing
>>> returns
>>>
>>> Most of that difference is due to a rather annoying timestamp
>>> consideration with directory entries in jars; my patch introduces a new Ant
>>> task, LatestTimeJar, to resolve it.
>>>
>>> The issue is---was---that in general, we jar both
>>> .../src/com/google/gwt/.../Foo.java and also
>>> build/out/.../com/google/gwt/.../Foo.class.  The jar file will have one
>>> directory entry for "com/", the existence of which is actually important to
>>> GWT as Scott pointed out in the first-round review comments.  But the two
>>> directories have different touch dates, and we archived the first-named,
>>> which was usually from .../src/..., with an "old" date by svn.  The second
>>> build would therefore notice that the *second* instance of "com/" was
>>> newer than the archived "com/", and therefore jar it again.  (Because we did
>>> "updates," the entry would have been new after that second cycle.  In some
>>> cases, notably the servet API classes in alldeps.jar, we had up to four such
>>> duplicates, though.)  Worse, everything downstream of that error also had to
>>> be redone... including the samples.
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>
> >
>

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