The comment says "Advance two words", so I assume no?
On Thu, Jun 10, 2021 at 6:14 AM steve wang <[email protected]> wrote:
> go 1.16.5
> runtime/mbitmap.go:946
>
> 1. switch h.shift {
> 2. case 0:
> 3. *h.bitp &^= mask3 << 0
> 4. *h.bitp |= hb << 0
> 5. case 1:
> 6. *h.bitp &^= mask3 << 1
> 7. *h.bitp |= hb << 1
> 8. case 2:
> 9. *h.bitp &^= mask2 << 2
> 10. *h.bitp |= (hb & mask2) << 2
> 11. // Two words written to the first byte.
> 12. // Advance two words to get to the next byte.
> 13. h = h.next().next() // line:946 <=== shouldn't it be
> "h=h.next()"???
> 14. *h.bitp &^= mask1
> 15. *h.bitp |= (hb >> 2) & mask1
> 16. case 3:
> 17. *h.bitp &^= mask1 << 3
> 18. *h.bitp |= (hb & mask1) << 3
> 19. // One word written to the first byte.
> 20. // Advance one word to get to the next byte.
> 21. h = h.next()
> 22. *h.bitp &^= mask2
> 23. *h.bitp |= (hb >> 1) & mask2
> 24. }
>
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