trims [Fri, 10 Dec 2010 17:59:46 -0800] rev 7422
Merge
ysr [Thu, 09 Dec 2010 21:47:58 -0800] rev 7421
Merge
ysr [Thu, 09 Dec 2010 09:22:57 -0800] rev 7420
7005259: CMS: BubbleUpRef asserts referent(obj)->is_oop() failed: Enqueued a bad referent
Summary: Relaxed the assert by allowing NULL referents when discovery may be concurrent.
Reviewed-by: johnc, jcoomes
ysr [Tue, 07 Dec 2010 21:55:53 -0800] rev 7419
7001033: assert(gch->gc_cause() == GCCause::_scavenge_alot || !gch->incremental_collection_failed())
7002546: regression on SpecJbb2005 on 7b118 comparing to 7b117 on small heaps
Summary: Relaxed assertion checking related to incremental_collection_failed flag to allow for ExplicitGCInvokesConcurrent behaviour where we do not want a failing scavenge to bail to a stop-world collection. Parameterized incremental_collection_will_fail() so we can selectively use, or not use, as appropriate, the statistical prediction at specific use sites. This essentially reverts the scavenge bail-out logic to what it was prior to some recent changes that had inadvertently started using the statistical prediction which can be noisy in the presence of bursty loads. Added some associated verbose non-product debugging messages.
Reviewed-by: johnc, tonyp
johnc [Tue, 07 Dec 2010 16:44:34 -0800] rev 7418
Merge
johnc [Tue, 07 Dec 2010 16:18:45 -0800] rev 7417
6994628: G1: Test gc/gctests/FinalizeTest05 fails (one live object is finalized)
Summary: The Solaris Studio 12 update 1 C++ compiler was incorrectly re-ordering the reads of an object's mark word in oopDesc::forward_to_atomic(). This opened a small window where one thread could execute the successful CAS path even though another thread had already successfully forwarded the object. This could result in an object being copied twice. The code in oopDesc::forward_to_atomic() was changed to read the mark word once.
Reviewed-by: ysr, tonyp
tonyp [Tue, 07 Dec 2010 16:47:42 -0500] rev 7416
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
Summary: Allow the eden to the expanded up to a point when the GC locker is active.
Reviewed-by: jwilhelm, johnc, ysr, jcoomes
kevinw [Wed, 08 Dec 2010 04:50:35 -0800] rev 7415
7003789: PTRACE_GETREGS problems with SA on Linux.
Summary: ifdef definitions for PTRACE_GETREGS_REQ clarified
Reviewed-by: dholmes
sla [Tue, 07 Dec 2010 03:15:45 -0800] rev 7414
6539281: -Xcheck:jni should validate char* argument to ReleaseStringUTFChars
Summary: Tag allocated memory with a magic value and verify when releasing.
Reviewed-by: phh, stefank
kamg [Mon, 06 Dec 2010 20:21:15 -0500] rev 7413
7003782: Update JVMTI version to 1.2 for jdk7
Summary: Update minor version to 1.2 for jdk7
Reviewed-by: phh, dcubed