TLBB: The Last Big Breakage

[Daniel Kozak]

ASAP please.
Dne 16. 3. 2014 5:10 "Andrei Alexandrescu" <SeeWebsiteForEmail at erdani.org>
napsal(a):

> D1's approach to multithreading was wanting. D2 executed a big departure
> from that with the shared qualifier and the default-thread-local approach
> to data.
>
> We think this is a win, but D2 inherited a lot of D1's thread-related
> behavior by default, and some of the rules introduced by TDPL (
> http://goo.gl/9gtH0g) remained in the "I have a dream" stage.
>
> Fixing that has not gained focus until recently, when e.g.
> https://github.com/D-Programming-Language/dmd/pull/3067 has come about.
> There is other more stringent control of shared members, e.g.
> "synchronized" is all or none, "synchronized" only makes direct member
> variables unshared, and more.
>
> This will statically break code. It will refuse to compile code that is
> incorrect, but also plenty of code that is correct; the compiler will
> demand extra guarantees from user code, be they in the form of casts and
> stated assumptions.
>
> I believe this is a bridge we do need to cross. One question is how we go
> about it: all at once, or gradually?
>
>
> Andrei
>
>
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