The org.jboss.aspects.concurrent Semaphore aspect does what I had in mind. I would also like a way to share the Semaphore instances (used internally by the Semaphore aspect) between multiple components. For example, I might want immutable application components to share a named Semaphore that has 64 permits and mutable components to share a named Semaphore that has 8 permits. Sound like a good enhancement? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4102188#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...