I could do that, but I will have to copy all the code from the execute class that does stuff like adding hooks to destroy processes when the jvm exits, parsing command-line arguments etc, when all I want to do is override how processes created by ant are destroyed. Besides even if I were to create another exec task, none of the built-in ant tasks that support the fork attribute (like java task) are going to call my class to create processes. From looking at the ant source code, I see that all tasks use to the 'Execute' class for process creation. I was thinking if the Execute class allowed the process creation code to be overridden then I could provide a new process destruction mechanism and it will be invoked by all the built-in tasks that support the fork attribute.
From: wolfgang häfelinger <whaefelin...@gmail.com> To: Ant Developers List <dev@ant.apache.org>; Vimil Saju <vimils...@yahoo.com> Sent: Sunday, February 12, 2012 7:32 AM Subject: Re: Regarding exec task > Is it possible to make the Execute class in ant extensible so that it becomes > possible to plugin our own implementation of Process class. Implement your own ueber-exec taks which uses default exec class when not-on windows and otherwise makes use of your own jvnet-process exec task. On Sun, Feb 12, 2012 at 3:29 PM, Vimil Saju <vimils...@yahoo.com> wrote: > > > > > Hi, > > I noticed that on windows, if I use the exec task to run a batch script which > in turn starts other processes then if kill ant then the sub-processes > created by the batch script still continues to run. I did some research on > google and found that the default java implementation of Process.destroy does > not kill the child processes created by a process on windows. I also found > that there are some third party libraries like jvnet that provide the > capability of killing all processes created by a process on windows. > > So I thought of somehow extending the 'Execute' class of ant to use the > functionality of this 3rd party library, but I find that its difficult if not > impossible to extend this class. I can't find a way to provide my > implementation of Process class that does something different when its > destroy method is called. Other core tasks such as java task directly create > an instance of the 'Execute' class which makes it difficult to globally > change how a forked process is destroyed within ant. > > Is it possible to make the Execute class in ant extensible so that it becomes > possible to plugin our own implementation of Process class. > > > Thanks > > Vimil -- Wolfgang Häfelinger --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@ant.apache.org For additional commands, e-mail: dev-h...@ant.apache.org
