Weldon,
> There bit layout was the following before new thread manager integration: > object info word contains: > 0 bit - available for GC > 1-6 bits - object hashcode > 7 bit - contention bit unused by TM, but used by GC_V4 > 8-31 bits - other thread manager's data
The new Thread Manager use only 10-31 bit for its own data. So you could also use 8-9 bits for GC purpose. These bits could be read any time, but modified only at GC stop the world phase, because they share a byte with a monitor recursion count and other bits. This byte is updated without a lock Thanks Artem --------------------------------------------------------------------- Terms of use : http://incubator.apache.org/harmony/mailing.html To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
