github.com/moarvm/moarvm | IRC logs at colabti.org/irclogger/irclogger_logs/moarvm
Set by AlexDaniel on 12 June 2018.
nwc10 good *, #moarvm 08:15
nwc10 .tell brrt Well, you have a bit more choice now: geizhals.eu/?cmp=2414598&cmp=2422055 (of course this doesn't work very well because the two products are in different categories) 08:53
tellable6 nwc10, I'll pass your message to brrt
nine Looks like the only reference to a serialization context in a precompiled comp unit is in the form of arguments to generated code in the dependencies+deserialize frame (createsc, scsetdesc and deserialize ops) 16:40
MasterDuke what does that mean? 16:42
nwc10 you know, that's also what I was asking myself. The words all pan out, but not when put together. 16:43
nine It means that it's surprisingly hard to get from a list of comp units loaded during a precompile (i.e. which setting, module loader and modules we requested) to a list of serialization contexts (i.e. what dependencies we expect to end up in the precomp file)
Essentially I want to create a white list of serialization contexts, to avoid dependencies from outside to leak into a precompilation (by way of int or parametrics caches) 16:44
nine Now of course adding a reference to the serialization context to MVMCompUnit is trivial and the deserialize op can set this reference. The (trick) question then becomes: how does one get at the MVMCompUnit? 17:07
Sounds easy since we have a CompUnit class in Rakudo. And if that seems to high level there's also a CompUnit::Handle which surely must be about the handle of the low level comp unit, right? Only that it actually isn't. 17:08
Even CompUnit::Handle doesn't have a reference to the MVMCompUnit, just to the main frame. This does have a reference to its comp unit via its static frame. But none of that seems to be accessible to HLL code 17:09
Ok, implemented a couple of get_attribute functions and now there is a way: use nqp; my $unit := $*REPO.need(CompUnit::DependencySpecification.new(:short-name<Test>)).unit; my $cu := nqp::getattr($unit, $unit.WHAT, "comp_unit"); nqp::scgethandle(nqp::getattr($cu, $unit.WHAT, "sc")).say 17:52
Now the hard part: actually creating that allow list, or even decide on what form this will take 17:54

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