Implementing Alternative Garbage Collector

[Jacob Carlborg via Digitalmars-d]

On 2015-09-02 22:13, Brandon Ragland wrote:
> On Wednesday, 2 September 2015 at 18:25:11 UTC, Jacob Carlborg wrote:
>> [1]
>> https://github.com/D-Programming-Language/druntime/blob/master/src/gcstub/gc.d
>>
>
> While that may be true, if the purpose was to ensure tracking and
> collection of objects / arrays created with the new expression, how
> would one do that without knowledge of the actual implementation and the
> interface?
>
> Same would go for slicing operations, which would be difficult to track.
>
> You'd have to pass a pointer to that new object onto the custom GC, or
> it will never see it. Quick way to have huge memory leaks...

I'm not sure I understand you're reply. You asked for the interface to 
the GC, as far as I know the above link contains the interface for the 
GC. That is, all the extern (C) functions.

As far as the "new" expression, technically it has nothing to do with 
the GC. The "new" expression is lowered to a call to "_d_newclass" [1], 
which in the current implementation then calls the GC.

I recommend you having a look in the "rt" package.

[1] 
https://github.com/D-Programming-Language/druntime/blob/master/src/rt/lifetime.d#L71

-- 
/Jacob Carlborg