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Date: Tue, 18 Dec 2007 12:08:31 +0100
From: Klaus Malorny <Klaus.Malorny@knipp.de>
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To: Ant Users List <user@ant.apache.org>
Subject: Re: AW: extended parallelism
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Jan.Materne@rzf.fin-nrw.de wrote:
>> Isn't this the default behaviour anyway?
> 
> No - there is no multithreading by default.
> That's why I write the ParallelExecutor.
> 
> 
>> <target name="a" depends="b,c,d"/>
>> If such a dependency did exist, it should be incorporated in 
>> the depends attribute of the 'b' & 'c' target declarations.
> 
> Thats the meaning - unordered list.
> 
> 
>> Assuming in the example above that targets b, c & d have no 
>> dependencies of their own, they should be eligable for 
>> parallel execution automatically without any need for 
>> additions to the syntax.
> 
> Thats the ParallelExecutor implementation ;)
> 
>

Hmm, interesting view. I was under the impression that there is an implicit 
order of the targets listed in the "depends" attribute. Two sentences in [1] 
suggest the same:

      [...]

      Ant tries to execute the targets in the depends attribute
      in the order they appear (from left to right)

      [...]

      It is a good practice to place your tstamp tasks in
      a so-called initialization target, on which all other
      targets depend. Make sure that target is always the
                                ^^^^^^^^^^^^^^^^^^^^^^^^^
      first one in the depends list of the other targets.
      ^^^^^^^^^
      In this manual, most initialization targets have
      the name "init".

      [...]

[1] http://ant.apache.org/manual/using.html#targets

Klaus



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