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From "Anderson, Rob (Global Trade)" <>
Subject RE: Parallel tasks and Windows
Date Fri, 25 May 2007 18:46:22 GMT
Sorry to hear that your issue is still unresolved. I suggest entering a
bug report in the bug database. Of course, you might want to search the
bug database first, to see if the issue is already documented in there.

-Rob Anderson

> -----Original Message-----
> From: Thomas Voigt [] 
> Sent: Friday, May 25, 2007 4:37 AM
> To:
> Subject: Parallel tasks and Windows
> Hi,
> I posed this question some time ago, but did not get any 
> answers. I thought after half a year (and unfortunately no 
> new insights) I'd try again, because this behaviour seriously 
> prolongs our build time :-\
> I stumbled upon a curious problem with the ant parallel 
> handling in conjunction with Windows XP.
> Let's say I have 3 targets: call1, call2 and call3 which are 
> executed in a parallel environment (2 threads). Each target 
> calls a hello world windows GUI application that has to be 
> closed manually and prints an exit confirmation afterwards. 
> Ant starts call1 and call2 correctly in parallel. Now the 
> curious thing is that ant will sometimes (not always) wait 
> for _both_ tasks to end before it starts the third task. No 
> output is written until both tasks are finished. 
> The problem is not limited to GUI applications, we have the 
> same behaviour if we call the VS2005 C++ compiler :-(
> We tried to reproduce the problem by replacing the hello 
> world calls with  various ant sleep commands, but this seemed 
> to work fine, the third task is always started immediately 
> after one of the first two tasks exits. 
> Any insights?
> Regards, Thomas
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