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It’s almost 1am, so I’m only scratching the surface, mechanistically
applying the renames that I’ve written down in my notebook:
* typeSignature => info
* declarations => decls
* nme/tpnme => termNames/typeNames
* paramss => paramLists
* allOverriddenSymbols => overrides
Some explanation is in order so that I don’t get crucified :)
1) No information loss happens when abbreviating `typeSignature` and `declarations`.
We already have contractions in a number of our public APIs (e.g. `typeParams`),
and I think it’s fine to shorten words as long as people can understand
the shortened versions without a background in scalac.
2) I agree with Simon that `nme` and `tpnme` are cryptic. I think it would
be thoughtful of us to provide newcomers with better names. To offset
the increase in mouthfulness, I’ve moved `MethodSymbol.isConstructor`
to `Symbol.isConstructor`, which covers the most popular use case for nme’s.
3) I also agree that putting `paramss` is a lot to ask of our users.
The double-“s” convention is very neat, but let’s admit that it’s just
weird for the newcomers. I think `paramLists` is a good compromise here.
4) `allOverriddenSymbols` is my personal complaint. I think it’s a mouthful
and a shorter name would be a much better fit for the public API.
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Apparently some completers can call setInfo while they’re not yet done,
which resets the LOCKED flag, and makes anything that uses LOCKED to
track completion unreliable. Unfortunately, that’s exactly the mechanism
that was used by runtime reflection to elide locking for symbols that are
known to be initialized.
This commit fixes the problematic lock elision strategy by introducing
an explicit communication channel between SynchronizedSymbol’s and their
completers. Now instead of trying hard to infer whether it’s already
initialized or not, every symbol gets a volatile field that can be queried
to provide necessary information.
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Examples noted in SI-8131 show that race conditions still abound.
This has been noted twice during pull request validation.
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https://github.com/scala/scala/pull/3029
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not anymore
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