[fpc-devel] Boehm garbage collector for freepascal

[Michael Schnell]

On 11/15/2010 02:04 PM, Thaddy wrote: ...

If you want to extend a compiler to allow for garbage collection, would 
it not be appropriate to have it manage an additional type of variables  
that is supposed to be "garbage collection enabled" pointers and have it 
always create double indirect accesses to this type of variables. The 
"garbage collection enabled memory allocator" would manage a list of 
these variables and see that the value of the pointer is an entry in 
this list that again is a pointer to the instance. Now that garbage 
collector can do it's work without the user program knowing about this.

Of course there are lots of issues regarding maybe excessive latency 
when the garbage collector is running (and thus the main program is in a 
hold-off) and with threads ,,,

-Michael