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From Ric Searle <...@dialogue.co.uk>
Subject Re: Starting a Java application in the background.
Date Tue, 02 Jul 2002 16:27:30 GMT
This is:

Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-rc-b91)

with

Apache Ant version 1.5Beta3 compiled on June 22 2002

Hope this helps,

Ric

On Tuesday, July 2, 2002, at 04:13  pm, Hal Hildebrand ((web)) wrote:

> Is this under JDK 1.3 or 1.4?
>
> Ant 1.5 beta 2 fixed this to kill all spawned processes when the parent
> is terminated.
>
> Seems like the JDK did something different in their process spawning in
> JDK 1.3 that was different from previous versions.  Spawned processes
> are not tied to the parent's lifetime in this version and above.
>
> ----- Original Message -----
> From: "Ric Searle" <ric@dialogue.co.uk>
>
>> You are mixing up the children and parents relations of the two. A
> java
>> task is a child of the ant process. Killing the ant process will kill
>> its children as well.
>
> That's what I would have thought, but it doesn't.  The java task that
> ant started carries on even when all of the ant processes have died.
>
> Ric
>
> On Monday, July 1, 2002, at 06:02  pm, Thomas Zander wrote:
>
>> You are mixing up the children and parents relations of the two. A
> java
>> task is a child of the ant process. Killing the ant process will kill
>> its children as well.
>> With the java process still living after ant died the children died
> and
>> the parent still lives.
>>
>> There is a way on linux to 'detach' a child from its parent. No idea
> if
>> Java supports that.
>>
>> So; like Steve said; its quite hard to write :)
>>
>>
>> from On Mon, Jul 01, 2002 at 11:41:01AM +0100, Ric Searle wrote:
>>> Thanks. It seems like a nice feature that ant could do with.
>>>
>>> I like the idea of saying to our support department, "Get version
> x.x
>>> from CVS, and then just type 'ant' to build and run it.".
>>>
>>> Here's a thought: Killing any of the ant processes (on Linux at
>> least)
>>> kills all of the ant processes, but leaves the Java task that ant
>>> started running. This is the effect I want, so is there a way of
>> getting
>>> ant to kill itself at the end of the build?
>>>
>>> Regards,
>>>
>>> Ric Searle
>>>
>>>
>>> On Friday, June 28, 2002, at 05:27 pm, Steve Loughran wrote:
>>>
>>>>
>>>>
>>>>> That's by design - usually java processes are part of the build,
> and
>>>>> the
>>>> build won't continue until the process has terminated. Ant will
>>>> redirect the
>>>> process's output/error streams to the build log, too.
>>>>
>>>>> It shouldn't be *too* hard to write some kind of "background" flag
>> in
>>>>> the
>>>> Java task, but I suspect you'd need to find >someone who truly
>>>> understands
>>>> that code first.
>>>>
>>>> There are some patche in bugzilla.
>>>>
>>>> It is hard to write, at least in a cross-platform way
>>
>> --
>> Thomas Zander
>> zander@planescape.com
>> We are what we pretend
>> to be
>>
>
>
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