Re: Register Allocators and Garbage Collectors

On 2008-09-10, Ori Bernstein <rand.chars@gmail.com> wrote:
>
> If we get a context switch between lines 2 and 3, then the only record
> of a root pointing to the newly allocated value is in register %eax,
> and is hidden from the debugger thread.
>
> How do garbage collectors deal with this problem typically? Does the
> compiler have to insert spill points which force the values onto the
> stack and invoke the GC? Am I just on crack thinking that there might
> be a problem?


I'm no GC expert, but I'd say that you detect roots to weed out certain
generation of blocks that can be cleaned.


So the solution is simple, don't add the "active" generation of blocks to
the generations to be cleaned.

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