[Redirecting to GHC Users which is the right place for questions about GHC.] Yes, the garbage collector will (well, certainly should) find and kill such threads. By "kill" I mean that they get sent an asynchronous exception of some kind (I hope the documentation says which) so that the thread has a chance to clean up rather than being forcibly terminated. I'm not quite sure where this fact should be documented -- documentation for GHC itself, or for the STM library? -- but it surely should be somewhere. Simon | -----Original Message----- | From: haskell-bounces@haskell.org [mailto:haskell-bounces@haskell.org] | On Behalf Of Ashley Yakeley | Sent: 15 September 2007 21:39 | To: haskell@haskell.org | Subject: [Haskell] Blocked STM & GC question | | If I have a thread that's blocked on an STM retry or TChan read, and | none of its TVars are referenced elsewhere, will it get stopped and | garbage-collected? | | I have in mind a pump thread that eternally reads off a TChan and | pushes | the result to some function. If the TChan is forgotten elsewhere, will | the permanently blocked thread still sit around using up some small | amount of memory, or will it be reaped by the garbage collector? | | -- | Ashley Yakeley | Seattle WA | | _______________________________________________ | Haskell mailing list | Haskell@haskell.org | http://www.haskell.org/mailman/listinfo/haskell