On Sunday, 21 September 2014 at 15:03:09 UTC, Andrei Alexandrescu
wrote:
On 9/21/14, 1:51 AM, Jacob Carlborg wrote:
On 2014-09-20 18:56, Andrei Alexandrescu wrote:
Please don't take me in a court of law. But yes, I am talking
about the
compiler inserting calls to increment and decrement reference
counts. --
Andrei
We do need to know what you're proposal is for.
The title is an incomplete summary. Exceptions would be
transparently reference counted. I.e. no changes in user code.
A little more detail on a design Walter has put together:
define a new root class RCObject. Neither Object nor RCObject
inherit each other. All classes that inherit RCObject are
detected by the compiler as reference counted.
(For practical reasons, RCObject will implement IUnknown. There
are a few random consequences of that (meaningless method
QueryInterface, no class info, no monitor, COM-compatible
layout) but IUnknown already has AddRef and Release and the
compiler already recognizes IUnknown as a special case. Hooking
RCObject there will leave us with two roots instead of adding a
third one.)
Throwable will inherit RCObject. The compiler inserts AddRef
and Release whenever copying RCObject (and derivatives)
references around, of course following a null check.
The caveats discussed previously in http://goo.gl/Xl5U3z do
apply.
Andrei
This makes much more sense to me than initial proposal. I may
even be brave enough to say that I like it :)
