Summary: Remove the assumption that G1CollectedHeap::in_cset_fast_test needs to check for NULL references. Most of the time this is not required, making the code doing this check multiple times.
Reviewed-by: stefank, mgerdin, jmasa

Summary: Move methods that are not dependent on any of G1ParCopyClosure's template parameters into G1ParCopyHelper. Further remove unused methods and members of the class hierarchy.
Reviewed-by: mgerdin, stefank

Reviewed-by: dholmes, jbachorik, egahlin, mgronlun

Reviewed-by: dholmes, acorn, kamg

8031968: Mac OS X: VM starts the agent by calling both Agent_OnAttach and Agent_OnAttach_L functions if its agent library is dynamically linked.
Summary: Make sure we only look for statically linked agents in the main process image
Reviewed-by: dsamersoff, bpittore, dcubed

Reviewed-by: kvn

Reviewed-by: dsamersoff, sla

8028623: SA: hash codes in SymbolTable mismatching java_lang_String::hash_code for extended characters.
Reviewed-by: sla, dsamersoff

Summary: restore the flag
Reviewed-by: twisti

Reviewed-by: jcoomes

Summary: Remove search in system dictionary and hacks, replace with verifying in CLD::_klasses list.
Reviewed-by: dcubed, acorn

Summary: Remove check for warning
Reviewed-by: ctornqvi, hseigel, coleenp

Summary: When string and symbol table unlink are not performed in parallel, the claim index we check is not updated, and so a guarantee fails. Take this into account when checking the guarantee.
Reviewed-by: brutisso, jwilhelm

8033106: Wrong predicate for checking whether the correct amount of symbol table entries have been processed in G1
Summary: The change fixes the predicate check.
Reviewed-by: jmasa, tonyp, stefank

Summary: Clean up and slightly optimize reference handling from the GC reference task queue. Since we never push partial array chunks as narrowOop* we can manually specialize the code so that some code can be optimized away.
Reviewed-by: tonyp, brutisso, stefank

Summary: Add test case for the VerifySilently flag.
Reviewed-by: brutisso

Summary: Made the flags Min- and MaxHeapFreeRatio manageable, and implemented support for these flags in ParallelGC.
Reviewed-by: sla, mgerdin, brutisso

Reviewed-by: jcoomes

Reviewed-by: lana

Summary: Added -Xmx256m -XX:ParallelGCThreads=4 to the test @run command. Verified that 256m is enough to trigger old 6826736 bug.
Reviewed-by: kvn

8028553: The JVM should not throw VerifyError when 'overriding' a static final method in a superclass.
Summary: Check if method is static before throwing exception.
Reviewed-by: kamg, coleenp, lfoltan, fparain

Summary: Move the option to obsolete options list, purge the redundant compiler code.
Reviewed-by: kvn, jrose

Summary: type methods shouldn't always operate on speculative part
Reviewed-by: kvn, twisti

8030027: nsk/jvmti/scenarios/hotswap/HS101/hs101t006 Crashed the vm on Linux-amd64: SIGSEGV in JavaThread::last_java_vframe(RegisterMap*)+0xfa
Summary: Add a safe guard to VMOp_GetCurrentLocation against non-walkable stack of target thread exiting from Java execution
Reviewed-by: mgronlun, dholmes, sla, dcubed
Contributed-by: serguei.spitsyn@oracle.com

Summary: Remove the above mentioned template parameter and related unused code. Also remove some classes that are never used.
Reviewed-by: stefank, mgerdin, jwilhelm

8027454: Do not traverse string table during G1 remark when treating them as strong roots during initial mark
Summary: Do not try to unlink string table entries unconditionally during remark. This is without side effects as the preceding initial mark always uses the string table as strong roots. Needs to be fixed with class unloading during concurrent mark.
Reviewed-by: brutisso, mgerdin

8027455: Improve symbol table scan times during gc pauses
Summary: Parallelize string table and symbol table scan during remark and full GC. Some additional statistics output if the experimental flag G1TraceStringSymbolTableScrubbing is set.
Reviewed-by: mgerdin, coleenp, brutisso

Summary: Move access check above the check for non-static method
Reviewed-by: lfoltan, coleenp