On Thu, Sep 17, 2009 at 5:22 PM, John Harrop <[email protected]> wrote: > On Thu, Sep 17, 2009 at 3:06 PM, Mark Volkmann <[email protected]> > wrote: >> >> On Thu, Sep 17, 2009 at 1:43 PM, z5h <[email protected]> wrote: >> > >> > Specifically some problems encountered in Clojure's STM and bytecode >> > generation. >> > >> > >> > http://www.azulsystems.com/events/javaone_2009/session/2009_J1_JVMLang.pdf >> > (Slide's 8 and 20-21) >> >> Slide 20 - Should say "Nothing mutable by default" and "One kind of >> mutable, Refs, guarded by STM" > > There are three more kinds of mutable: atoms, agents, and mutable Java > objects. Of those, the latter are to be avoided where possible though, and > only agents are also guarded by STM in any manner.
Agents are not guarded by STM. It is Refs that can only be modified in a transaction. There is a connection between Agents and STM though. If you send an action to an Agent within a transaction, it won't actually be sent until changes to Refs in the transaction have been committed. -- R. Mark Volkmann Object Computing, Inc. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to [email protected] Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~----------~----~----~----~------~----~------~--~---
