Summary: Instead of the region size being hard-coded, allow the user to set it.
Reviewed-by: jmasa, johnc, apetrusenko

Summary: Treat ProfileData in MDO's as a source of weak, not strong, roots. Fixes the bug for stop-world collection -- the case of concurrent collection will be fixed separately.
Reviewed-by: jcoomes, jmasa, kvn, never

Reviewed-by: tonyp, iveresov

Reviewed-by: jmasa, iveresov

Reviewed-by: tonyp, iveresov

Summary: Override should_remember_klasses() and remember_klass() as needed.
Reviewed-by: ysr, jcoomes

Summary: Removing the concurrent overhead tracker from G1, along with the GC overhead reporter and the G1AccountConcurrentOverhead (both of which rely on the the concurrent overhead tracker).
Reviewed-by: iveresov, johnc

Reviewed-by: jcoomes, tonyp

Reviewed-by: iveresov, tonyp, ysr

Reviewed-by: ysr, never, kvn

Summary: switch them from product to experimental; 6817525 will toggle them and switch to diagnostic
Reviewed-by: kvn

6821507: Alignment problem in GC taskqueue
Reviewed-by: tonyp, apetrusenko

Summary: Improvement on reexecute implementation to fix the assertion failure
Reviewed-by: kvn, never

Summary: The first worker thread is delayed when entering the GC because it clears the card count table that is used in identifying hot cards. Replace the card count table with a dynamically sized evicting hash table that includes an epoch based counter.
Reviewed-by: iveresov, tonyp

Summary: Have the GC worker threads clear the hot card cache in parallel by having each worker thread claim a chunk of the card cache and process the cards in that chunk. The size of the chunks that each thread will claim is determined at VM initialization from the size of the card cache and the number of worker threads.
Reviewed-by: jmasa, tonyp

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

Summary: Use NewRatio if it is explicitly set.
Reviewed-by: ysr, jcoomes

Summary: developed a reexecute logic for the interpreter to reexecute the bytecode when deopt happens
Reviewed-by: kvn, never, jrose, twisti

Summary: Produce narrow type for new Phi from the original Phi type.
Reviewed-by: cfang

Summary: Always use "lea" instruction for narrow oop decoding instead of "shift".
Reviewed-by: never

Summary: It adds parameter -XX:+G1SummarizeRSetStatsPeriod that causes update buffer processing information to be printed periodically. It also includes two small formatting changes.
Reviewed-by: jmasa, jcoomes, ysr

Summary: renaming a couple of update buffer-related parameters to make them more understandable and consistent.
Reviewed-by: iveresov, ysr

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: Code compiled with server compiler generates an incorrect result.
Reviewed-by: cfang, never, kvn

Summary: JVM_FindClassFromBootLoader returns null if class not found
Reviewed-by: acorn, alanb, dholmes

Summary: Use new atomic long load method Atomic::load() to load max_hrtime.
Reviewed-by: never, ysr, johnc, phh, dcubed, acorn

Summary: Add additional check for a tight loop.
Reviewed-by: never

Summary: Bailout compilation if nodes limit could be reached during Output phase.
Reviewed-by: never, twisti

Summary: Anti-delta for debugging debris that was inadvertently pushed.
Reviewed-by: kvn, tonyp

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

Summary: Implementation of RFE 6604422 (G1: re-use half-promoted regions) introduced incorrect _gc_alloc_region_counts updates which effectively disabled survivor spaces.
Reviewed-by: johnc, jmasa, tonyp

Summary: remove useless lazy evaluation of intrinsics; add LAST_COMPILER_INLINE to help categorize them
Reviewed-by: kvn

Reviewed-by: kvn

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

Summary: GlobalMemoryStatus() does not report correct memory usage when the system has more than 4gb of RAM. GlobalMemoryStatusEx() should be used in place of GlobalMemoryStatus().
Reviewed-by: kamg, coleenp

Summary: Get type for new Phi from non dead path.
Reviewed-by: never

Summary: Fix eliminate_card_mark() to eliminate G1 pre/post barriers.
Reviewed-by: never

Reviewed-by: never, kvn
Contributed-by: yamauchi@google.com, rasbold@google.com

Summary: The used() method assumes that the heap lock is held when it is called. However, when used() is called from print_on(), this is not the case.
Reviewed-by: ysr, jmasa