Summary: Update the HS20 build number to 04
Reviewed-by: jcoomes

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

Summary: ifdef definitions for PTRACE_GETREGS_REQ clarified
Reviewed-by: dholmes

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

Summary: Wrong assumption about expecting the current alloc region expected to be NULL in expand_and_allocate().
Reviewed-by: brutisso, ysr

Summary: Add new development launcher called hotspot(.exe)
Reviewed-by: coleenp

Summary: Reverted to old sort order on Linux and Solaris.
Reviewed-by: tonyp, coleenp

Summary: Enable reference discovery during concurrent marking by setting the reference processor field of the concurrent marking closure. Keep reference objects on the discovered reference lists alive during incremental evacuation pauses until they are processed at the end of concurrent marking.
Reviewed-by: ysr, tonyp

Summary: Added an ifndef DONT_USE_PRECOMPILED_HEADER to precompiled.hpp. Set up DONT_USE_PRECOMPILED_HEADER when compiling with Sun Studio or when the user specifies USE_PRECOMPILED_HEADER=0. Fixed broken include dependencies.
Reviewed-by: coleenp, kvn

Summary: gcc bug worksaround for IA64 no longer needed
Reviewed-by: andrew

Summary: move functions from hpi library to hotspot, communicate with licensees and open source community, check jdk for dependency, file CCC request
Reviewed-by: coleenp, acorn, dsamersoff

Summary: Added target architecture parameters to make ADLC build properly
Reviewed-by: never, stefank

Reviewed-by: jcoomes, dholmes, andrew, kvn

Summary: Using r12 as temporary register around call_VM trashes heapbase becausecall_VM doesn't always return immediately to following code (eg forward_exception, popframe and early return support).
Reviewed-by: never, kvn

Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg

Summary: 6970683 and 6953144 introduced changes that need to be implemented for Zero and Shark.
Reviewed-by: twisti
Contributed-by: NGary Benson <gbenson@redhat.com>

Reviewed-by: acorn, dholmes

Summary: Ported Chris Phillips' patch from jdk5 to jdk7
Reviewed-by: chrisphi, coleenp

Summary: Wrong value type is used for NULL store when clearing the detail message of the preallocated exception object.
Reviewed-by: never, iveresov