Summary: Replace the assert with narrow_oop_shift set to 0.
Reviewed-by: never, jcoomes

Summary: In the assertion allow for collision with the guard page.
Reviewed-by: tonyp, ysr, jcoomes

Summary: Correctly count full GC operations for framework collectors. Add ForceFullGCJVMTIEpilogues as a future work around if needed.
Reviewed-by: jcoomes, alanb, ysr

Summary: Update copyright for files that have been modified in 2009, up to 07/09
Reviewed-by: tbell, ohair

Summary: Fix deoptimization code and OopMapSet::all_do() to check for oop = narrow_oop_base.
Reviewed-by: jcoomes, phh, ysr, never

Summary: serialize.cpp currently uses objArrayOopDesc::base_offset_in_bytes(T_BYTE), which seems to be wrong.
Reviewed-by: coleenp, kvn

Summary: Modifications to G1 so as to allow the use of compressed oops.
Reviewed-by: apetrusenko, coleenp, jmasa, kvn, never, phh, tonyp

Summary: Short-circuit gc-a-lot attempts by non-JavaThreads; SkipGCALot c'tor to elide re-entrant gc-a-lot attempts.
Reviewed-by: apetrusenko, jcoomes, jmasa, kamg

6826318: G1: remove traversal-based refinement code
Summary: Removed traversal-based refinement code as it's no longer used. Made the concurrent refinement (queue-based) parallel.
Reviewed-by: tonyp

Reviewed-by: kvn

Summary: initial implementation, with known omissions (x86/64, sparc, compiler optim., c-oops, C++ interp.)
Reviewed-by: kvn, twisti, never

Summary: Add executable parameters to reserve_memory and commit_memory to reduce executable memory to only the Code Heap.
Reviewed-by: xlu, kvn, acorn

Summary: Allow Hotspot builds with latest Windows SDK 6.1 on 64bit Windows 2003
Reviewed-by: ohair, tbell, jcoomes

Summary: Use zero based compressed oops if java heap is below 32gb and unscaled compressed oops if java heap is below 4gb.
Reviewed-by: never, twisti, jcoomes, coleenp

Summary: Update copyright for files that have been modified in 2009, up to 03/09
Reviewed-by: katleman, tbell, ohair

6720334: G1: don't update RSets of collection set regions during an evacuation pause
Summary: Introduced a deferred update mechanism for delaying the rset updates during the collection pause
Reviewed-by: apetrusenko, tonyp

Summary: Call newly created CollectedHeap::dump_{pre,post}_full_gc before and after every stop-world full collection cycle on GenCollectedHeap and ParallelScavengeHeap. (Support for G1CollectedHeap forthcoming under CR 6810861.) Small modifications to existing heap dumping and class histogram implementation, especially to allow multiple on-the-fly histos/dumps by the VM thread during a single safepoint.
Reviewed-by: jmasa, alanb, mchung

Summary: I have collected some typos I have found while looking at the code.
Reviewed-by: kvn, never

Summary: Two assertions were incorrectly composed.
Reviewed-by: tonyp

Summary: Substitute a spin loop for most calls to yield() to reduce the stress on the system.
Reviewed-by: tonyp

Summary: The CMS concurrent precleaning and concurrent marking phases should work around classes that are undergoing redefinition.
Reviewed-by: ysr, tonyp

Summary: Avoid overflow list walk in CMS & ParNew when it is unnecessary. Fix a couple of correctness issues, including a C-heap leak, in ParNew at the intersection of promotion failure, work queue overflow and object array chunking. Add stress testing option and related assertion checking.
Reviewed-by: jmasa

Summary: The CMS concurrent precleaning and concurrent marking phases should work around classes that are undergoing redefinition.
Reviewed-by: ysr, dcubed

Summary: Added safe_object_iterate() for use by JMapPerm.
Reviewed-by: tonyp

Summary: remove Universe::_fillerArrayKlassObj and associated code
Reviewed-by: jmasa, tonyp

Summary: Update copyright for files that have been modified starting July 2008 to Dec 2008
Reviewed-by: katleman, ohair, tbell

Reviewed-by: ysr, mchung

Reviewed-by: apetrusenko, ysr

6736295: SIGSEGV in product jvm, assertion "these are the only valid states during a mark sweep" in fastdebug
Summary: Restructured the code in the perm gen allocation retry loop so as to avoid "safepoint-blocking" on locks, in this case the Heap_lock, while holding uninitialized allocated heap storage.
Reviewed-by: apetrusenko, iveresov, jcoomes, jmasa, poonam

Summary: Renamed Reference{Policy,Pocessor} methods from snap{,_policy}() to setup{,_policy}()
Reviewed-by: apetrusenko

Summary: For current soft-ref clearing policies, we can decide at marking time if a soft-reference will definitely not be cleared, postponing the decision of whether it will definitely be cleared to the final reference processing phase. This can be especially beneficial in the case of concurrent collectors where the marking is usually concurrent but reference processing is usually not.
Reviewed-by: jmasa

Summary: When we encounter marking stack overflow during precleaning of Reference lists, we were using the overflow list mechanism, which can cause problems on account of mutating the mark word of the header because of conflicts with mutator accesses and updates of that field. Instead we should use the usual mechanism for overflow handling in concurrent phases, namely dirtying of the card on which the overflowed object lies. Since precleaning effectively does a form of discovered list processing, albeit with discovery enabled, we needed to adjust some code to be correct in the face of interleaved processing and discovery.
Reviewed-by: apetrusenko, jcoomes

Reviewed-by: ysr, tonyp

Summary: CDS hardcoded max c++ virtual method table increased
Reviewed-by: coleenp, xlu, jmasa

Summary: Update for files that have been modified starting July 2008
Reviewed-by: ohair, tbell

Summary: 6730514 inadvertently disabled perm gen expansion; reenable
Reviewed-by: ysr

Summary: The fix avoids a call to address_for_index() in this particular situation where it is not known if the passed index is in bounds.
Reviewed-by: tonyp

Summary: Removing two buggy methods that should not be used, but ended up being used due to a re-organization in the class hierarchy.
Reviewed-by: jmasa, ysr, kamg, coleenp

Reviewed-by: jcoomes

Summary: An expansion by 0 bytes was not anticipated when the assertion was composed.
Reviewed-by: jjh, jcoomes, apetrusenko