Re: Add HeapView functionality (ec22f7d)

Hi, Am Sonntag, den 20.05.2018, 15:43 +0000 schrieb git@git.haskell.org:

commit ec22f7ddc81b40a9dbcf140e5cf44730cb776d00 Author: Patrick Dougherty Date: Wed May 16 16:50:13 2018 -0400

Add HeapView functionality

This pulls parts of Joachim Breitner's ghc-heap-view library inside GHC. The bits added are the C hooks into the RTS and a basic Haskell wrapper to these C hooks. The main reason for these to be added to GHC proper is that the code needs to be kept in sync with the closure types defined by the RTS. It is expected that the version of HeapView shipped with GHC will always work with that version of GHC and that extra functionality can be layered on top with a library like ghc-heap-view distributed via Hackage.

whoohoo, this is great! I did not not expect that the horrifying (but maybe not horrible) hack that I wrote so many years ago becomes an official feature :-) I’ll be curious in what ways our community will use (or abuse) this feature… Patrick, you mention that a library like ghc-heap-view will still be required. Are you interested in updating it to use the new interfaces, or even take it over completely? Compatibility with ghc-vis (http://felsin9.de/nnis/ghc-vis/) is probably the most important goal here. I’m CC’ing the author of ghc- vis, Dennis. Or maybe ghc-vis should use the GHC-provided wrappers directly? Dennis, are you still invested in maintaining ghc-vis? Cheers, Joachim -- Joachim Breitner mail@joachim-breitner.de http://www.joachim-breitner.de/