ysr [Mon, 16 Aug 2010 15:58:42 -0700] rev 6258
6948538: CMS: BOT walkers can fall into object allocation and initialization cracks
Summary: GC workers now recognize an intermediate transient state of blocks which are allocated but have not yet completed initialization. blk_start() calls do not attempt to determine the size of a block in the transient state, rather waiting for the block to become initialized so that it is safe to query its size. Audited and ensured the order of initialization of object fields (klass, free bit and size) to respect block state transition protocol. Also included some new assertion checking code enabled in debug mode.
Reviewed-by: chrisphi, johnc, poonam
asaha [Tue, 17 Aug 2010 22:52:50 -0700] rev 6257
6977952: Test: Sync missing tests from hs16.3 to hs17.x
Reviewed-by: wrockett
trims [Wed, 18 Aug 2010 16:11:21 -0700] rev 6256
Merge
johnc [Sat, 14 Aug 2010 00:47:52 -0700] rev 6255
Merge
jcoomes [Wed, 11 Aug 2010 13:12:28 -0700] rev 6254
6976378: ParNew: stats are printed unconditionally in debug builds
Reviewed-by: tonyp
ysr [Tue, 10 Aug 2010 14:53:35 -0700] rev 6253
6973570: OrderAccess::storestore() scales poorly on multi-socket x64 and sparc: cache-line ping-ponging
Summary: volatile store to static variable removed in favour of a volatile store to stack to avoid excessive cache coherency traffic; verified that the volatile store is not elided by any of our current compilers.
Reviewed-by: dholmes, dice, jcoomes, kvn
jcoomes [Mon, 09 Aug 2010 18:03:50 -0700] rev 6252
6970376: ParNew: shared TaskQueue statistics
Reviewed-by: ysr