On 1/13/2011 2:57 AM, Patrick Martin wrote:
Thank you Antoine,
I do have a follow-up question on this though. Will this be thread
safe? Is it possible to run two targets in parallel from Java code,
without any interactions (different projects, property sets and so
on)?
Ant has a parallel task, and I am running build scripts with some
parallelism inside them (for instance to run different JUnit suites in
parallel).
Running different projects in parallel should work. You should make a
prototype and see how it goes. If you find errors ping the list and/or
create bug reports.
I am especially afraid of the system properties which may be shared
and set/read from parallel ant projects.
System properties are really handles by Java and they are shared in a
JVM. So if your different projects rely on different system properties
then in fact you need to fork them.
I'd also be interested in running ant tasks in parallel on *different*
versions of Ant (for script migrations purposes), which would probably
lead to using different class loaders. Is that something feasible?
I have never tried.
Wrapping ant inside an OSGi bundle could address your need. You could
create a bundle for say ant 1.6.x and another for ant 1.8.x, and have
these bundles export a project build service.
Thanks again,
Patrick
Regards,
Antoine
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