On Thursday, 25 September 2014 at 21:59:15 UTC, Sean Kelly wrote:
On Thursday, 25 September 2014 at 13:55:42 UTC, Wyatt wrote:
The caveat for D being this design requires read and write
barriers and I'm pretty sure I recall correctly that those
have been vetoed several times for complexity.
Pretty much for reasons of being able to call C functions and
inline asm code. Memory barriers may still be possible in
these scenarios, but they would be extremely expensive.
BTW, C usually accepts data only for reading, and writes mostly
strings and buffers - plain data without pointers. In both cases
it doesn't need to notify GC (as far as I understand write
barriers).
