Even the next major, manually triggered GC? I'm just dealing with GHC here, if that simplifies the discussion.
Although important and good to know, I don't really care what the spec says here. I just want to know if, with the current implementation of GHC, finalizeres will be run if a GC is manually triggered and there are no references to the objects they point to. Also, afaik, the performGC function is a GHC extension anyways. On Mon, Feb 6, 2012 at 11:16 PM, Austin Seipp <mad....@gmail.com> wrote: > It's a precise GC of course (conservative collection would be madness > considering how much memory Haskell programs chew through.) That still > doesn't ensure your finalizer will run during the next GC even if all the > references are gone by then. > > Sent from my iPhone^H^H^H^H^HPortable Turing machine > > On Feb 6, 2012, at 10:09 PM, Clark Gaebel <cgae...@csclub.uwaterloo.ca> > wrote: > > Is the Haskell garbage collector conservative, or precise? > > If it's conservative, then this will only usually work. If it's precise, > it should always work. > > On Mon, Feb 6, 2012 at 10:56 PM, Ben Lippmeier <b...@ouroborus.net> wrote: > >> >> On 07/02/2012, at 2:50 PM, Clark Gaebel wrote: >> >> > I would be running the GC manually at key points to make sure it gets >> cleaned up. Mainly, before any scene changes when basically everything gets >> thrown out anyways. >> >> >> From the docs: >> >> newForeignPtr :: FinalizerPtr a -> Ptr a -> IO (ForeignPtr a)Source >> Turns a plain memory reference into a foreign pointer, and associates a >> finalizer with the reference. The finalizer will be executed after the last >> reference to the foreign object is dropped. There is no guarantee of >> promptness, however the finalizer will be executed before the program exits. >> >> >> "No guarantee of promptness". Even if the GC knows your pointer is >> unreachable, it might choose not to call the finaliser. I think people have >> been bitten by this before. >> >> Ben. >> >> >> > _______________________________________________ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-cafe > >
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