Summary: Mark field volatile, use membars, and change access order to close race
Reviewed-by: dcubed, dholmes

Summary: Make JvmtiGCMark safe to run non-safepoint and instrument CMS
Reviewed-by: ysr, dcubed

Summary: Modify membars to match regular volatile variable handling
Reviewed-by: iveresov, kvn, never

Summary: Codebuffer can overflow on test with large number of calls
Reviewed-by: dholmes, collins

Summary: Track allocated bytes in Thread's, update on TLAB retirement and direct allocation in Eden and tenured, add JNI methods for ThreadMXBean.
Reviewed-by: coleenp, kvn, dholmes, ysr

6583275: Hotspot crash in vm_perform_shutdown_actions due to uninitialized TLS during out of memory handling
Summary: Call get_thread_slow() in vm_perform_shutdown actions and add null check.
Reviewed-by: kvn, dholmes, jcoomes

Summary: enhance the error reporting mechanism to help user to fix the problem rather than making it look like a VM error.
Reviewed-by: kvn, kamg

Summary: Fix frame size computation
Reviewed-by: phh, kvn

Summary: reset NoHandleMark before going into VM.
Reviewed-by: iveresov

Summary: remove clear_scratch_buffer_blob and let init_scratch_buffer_blob free and allocate a new blob if required.
Reviewed-by: twisti

7009359: HS with -XX:+AggressiveOpts optimize new StringBuffer(null) so it does not throw NPE as expected
Summary: Bailout StringConcat optimization if null is passed to StringBuffer constructor.
Reviewed-by: iveresov

Summary: Fix CAS of longs on SPARC 32bit and cmove on SPARC 64bit.
Reviewed-by: kvn

Reviewed-by: kvn, jrose

Summary: bump CG_BUILD_ITER_LIMIT to 20
Reviewed-by: iveresov

Summary: When bootstrap_method_ref in BootstrapMethods attribute points to a wrong CP entry (non-MethodHandle), JVM throws ClassFormatError with a message, where method index and class file name is garbage.
Reviewed-by: iveresov

Summary: Fire the gc-begin and gc-end probes for G1.
Reviewed-by: kamg, ysr, jcoomes

Reviewed-by: never

Summary: Age bits need not enter the mark-word preservation calculus; also affected, in addition to CMS, per CR synopsis above, were ParNew (but not DefNew), ParallelScavenge and G1, albeit to a lesser degree than CMS.
Reviewed-by: tonyp, johnc

6579789: Internal error "c1_LinearScan.cpp:1429 Error: assert(false,"")" in debuggee with fastdebug VM
Reviewed-by: kvn, iveresov

Summary: Initialize the _is_alive_non_header field of G1's reference processor with an instance of the G1CMIsAliveClosure. This will stop adding reference objects with live referents to the discovered reference lists unnecessarily.
Reviewed-by: tonyp, ysr, jwilhelm, brutisso

Summary: read Solaris kstat data to get more precise CPU information
Reviewed-by: iveresov, never, twisti, dholmes

Reviewed-by: kvn, iveresov

Summary: An interference between a fix for 6993125 and disabled optimization in compressedStream.cpp produces a warning with VS2010. Disable the warning for the code fragment for which the optimizations are disabled.
Reviewed-by: kvn

Summary: Updates to Visual Studio project creation and development launcher
Reviewed-by: stefank, coleenp

Reviewed-by: kvn, iveresov

7000559: G1: assertion failure !outer || (full_collections_started == _full_collections_completed + 1)
Summary: The concurrent marking thread can complete its operation and increment the full GC counter during a Full GC. This causes the nesting of increments to the start and end of Full GCs that we are expecting to be wrong. the fix is for the marking thread to join the suspendible thread set before incrementing the counter so that it's blocked until the Full GC (or any other safepoint) is finished. The change also includes some minor code cleanup (I renamed a parameter).
Reviewed-by: brutisso, ysr

Summary: missing null check in owns_pending_list_lock() because this can be called before pending_list_lock is initialized.
Reviewed-by: never, kvn

Reviewed-by: kvn, twisti

Summary: Implemented in-process C native stack frame decoding when symbols are available.
Reviewed-by: coleenp, never

Summary: add another ResourceObj debug field to distinguish garbage
Reviewed-by: dholmes, coleenp

Summary: Don't acquire methodData_lock while holding pending list lock
Reviewed-by: kvn, never, ysr

Summary: Add 'GetThisObject' function
Reviewed-by: never, coleenp

Summary: Relaxed the assert by allowing NULL referents when discovery may be concurrent.
Reviewed-by: johnc, jcoomes

Summary: hotspot should check protection attribute besides the name and signature of the method when constructing vtable.
Reviewed-by: dcubed

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

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

Summary: Allow the eden to the expanded up to a point when the GC locker is active.
Reviewed-by: jwilhelm, johnc, ysr, jcoomes

Summary: Tag allocated memory with a magic value and verify when releasing.
Reviewed-by: phh, stefank

Summary: Update minor version to 1.2 for jdk7
Reviewed-by: phh, dcubed

Summary: Fixed a race condition in the assertion caused by an unguarded, concurrent access to a GrowableArray object.
Reviewed-by: coleenp, dholmes, dsamersoff
Contributed-by: volker.simonis@gmail.com