On 3/9/11 1:54 PM, Glenn Maynard wrote:
Any system with memory protection can interrupt on write, which makes copy-on-write very close to free, as long as you can page-align the buffer.
That's a pretty serious caveat, though. And you're assuming that memory meta-operations like "set up a custom write interrupt handler for this page" are free, which is not exactly the case as I understand it.
-Boris
