What bit of code are you looking at?

On Dec 10, 12:35 am, bazookier <[email protected]> wrote:
> The gc in dalvik is not very difficult.
> I can understand most things and how they work.
> But one thing I don't understand.
> When freeing the memory allocated by mspace which is set int the bits
> of heap bitmap, it uses xor operating to calculate what should be
> collected.
> Suppose like this:
> After last gc      after this gc       result           should be
> collected
> 0                      0                      0                 N
> 1                      1                      0                 N
> 1                      0                      1                 Y
> 0                      1                      1                 Y(Is
> this right?)
>
> The first three cases are obviously correct.
> But the last case perhaps is wrong.
> Although it was not used before last gc, it is used since then.
> It should not be collected as garbage I think.
> Can anyone explain why?

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