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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=16347 [Proposal] Running task asynchrously Summary: [Proposal] Running task asynchrously Product: Ant Version: 2.0 spec Platform: Other OS/Version: Other Status: NEW Severity: Enhancement Priority: Other Component: Core tasks AssignedTo: [EMAIL PROTECTED] ReportedBy: [EMAIL PROTECTED] HI, attached is a tentative patch that allow a Task object to run asychronously. I have tested the patch on Solaris and win2k and everything works fine (without breaking backward compatibility). To use the functionality, you just have to add to a task the spawn attribute, e.g.: <exec dir="c:/src/jakarta-tomcat-5/build/bin/" executable="sh" spawn="true"> Since some task needs a couple of seconds to start/stop, I also added a spawnWaitUntil attribute where you can set the time required before moving to the next Task. I did no wrote a <spawn> task because I think the functionality should be available to every Task. For now I did not add the functionality to Java, Javac, Jar. Let me know what you think. At least I have something use when <gump>ing tomcat :-) Thanks, -- Jeanfrancois ---------------------------------------------------------------------------- Dominique Devienne wrote: >Thanks for all the hard work Jean-Francois. > >1) Could you open a new BugZilla enhancement, and attach you patch there? >This would allow to discuss you changes there, easily referenceable. > >2) Why did you have to modify Task.java? It doesn't seem warranted, and >probably will not fly well with the committers. I shouldl read the email list more often :-) In my opinion, a spawn functionality could be available not only for Exec, but also for Copy, Java, Javac, Jar etc. It is maybe a false assumption..... > >3) Any chance you might be able to write unit tests specific to the 'spawn' >mode of <exec>? Will do. I should know that working on Tomcat :-) > >Also, what happens of the spawned process stdin/stdout/stderr? Do you force >redirecting to a file? If I spawn a process from Ant, Ant finishes, and I >close the console, will the program stop and/or hang and/or its output will >simply be lost??? the spawnWaitUntil attribute cover partially that purpose. The stdin/stdout/stderr will be gathered until this value timeout. That's probably not the proper behaviour if we want to gather all the stdin/stdout/stderr. The current patch will loose the stdin/stdout/stderr. That should not be difficult to force ant to listen until all spawn tasks complete. A simple subsriber/listener mechanim can do that. One question. Should we kill all spawned task if ant is stopped? > >Thanks, --DD > Thanks. -- Jeanfrancois -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
