Re: Finding objects on C stack - alternate GCPRO

[Helmut Eller]

* Dmitry Antipov [2011-11-16 10:07] writes:

> Everyone agrees that GGPROs are ugly and painful. On the other side,
> current C stack marking code introduces substantial overhead by
> maintaining red-black tree. And, since C stack marking is
> conservative, it becomes very tricky to implement GC that may
> relocate live objects (copying or compacting approach).
>
> But there is another method to implement GCPROs. It looks not very
> portable beyond GNU C since it uses __attribute__ ((cleanup (function)))
> and compound statement expressions C extensions. But it doesn't
> require UNGCPRO and dumbs like 'struct gcpro gcpro1, struct gcpro2, ...'.
> And I believe it should work across longjmps.

And we could use C++ with destructors.

Helmut