Summary: Revert JDK-6976350 because it does not improve PLAB fragmentation. To the contrary, it tends to increase the amount of wasted space with many threads.
Reviewed-by: brutisso

Summary: Move G1ParCopyClosure::copy_to_survivor_space to decrease code size.
Reviewed-by: stefank, jmasa

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: coleenp, ehelin, egahlin, mgronlun

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