Jv_AllocBytesChecked (Was: What is wrong with Vector?)

Thu Dec 21 22:48:00 GMT 2000

>>>>> "Hans" == Boehm, Hans <hans_boehm@hp.com> writes:

Hans> If you combine them orthogonally, you naturally end up with four
Hans> kinds of locks, where my current scheme gives you two. In spite
Hans> of that, I believe that you could perhaps do it orthogonally.
Thanks. I'm not overly concerned about doing this. I just wondered
what the tradeoffs were.
Hans> I should look at this more. My impression is that's hard to do,
Hans> because we don't have a second header word that we could point
Hans> at the stack allocated structure.
I think EF uses a single word, by having a bit or two reserved to
indicate state. Then whatever extra info is needed is stashed on the
stack.
Hans> I also though that there was a Sun patent on some of this?
I honestly don't know.
Tom