Summary: see synopsis
Reviewed-by: acorn, coleenp

Summary: Update the HS21 build number to 02
Reviewed-by: jcoomes

Summary: Looking at API_VERSION_NUMBER define to see what version of dbghelp.h/imagehlp.h is included to determine what MINIDUMP_TYPEs are defined in the header file
Reviewed-by: acorn, brutisso, sla

Summary: Added Minidump support on Windows, enabled large page core dumps when coredump_filter is present and writing out path/rlimit for core dumps.
Reviewed-by: poonam, dsamersoff, sla, coleenp

Summary: Add support for distribution-specific error reporting
Reviewed-by: coleenp, phh, jcoomes, ohair

Reviewed-by: alanb, dcubed, coleenp

Summary: Print an additional message for OOM during stack trace printing
Reviewed-by: dholmes, phh, acorn, kamg, dcubed

Summary: Use os::malloc() to allocate buffer to read elf symbols and check for null
Reviewed-by: zgu, phh, dsamersoff, dholmes, dcubed

Summary: Initialize _sum_x_squared, _intercept and _slope in constructor.
Reviewed-by: bobv, coleenp

Summary: Write method signature handler under lock to prevent race with growable array resizing
Reviewed-by: dsamersoff, dholmes

6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
Summary: Defer posting events from the compiler thread: use service thread
Reviewed-by: coleenp, dholmes, never, dcubed

7007446: G1: expand the heap with a single step, not one region at a time
Summary: Changed G1CollectedHeap::expand() to expand the committed space by calling VirtualSpace::expand_by() once rather than for every region in the expansion amount. This allows the success or failure of the expansion to be determined before creating any heap regions. Introduced a develop flag G1ExitOnExpansionFailure (false by default) that, when true, will exit the VM if the expansion of the committed space fails. Finally G1CollectedHeap::expand() returns a status back to it's caller so that the caller knows whether to attempt the allocation.
Reviewed-by: brutisso, tonyp

Reviewed-by: dholmes, bdelsart

Summary: Add option for gcc 4 and above, define JNIEXPORT and JNIIMPORT to visibility=default, add for jio_snprintf and others since -fvisibility=hidden overrides --version-script definitions.
Reviewed-by: kamg, never

Summary: The reference handler java thread and the GC could dead lock
Reviewed-by: never, johnc, jcoomes

Summary: Fix calculation of _desired, in free list statistics, which was missing an intended set of parentheses.
Reviewed-by: poonam, jmasa

Summary: There's a potential deadlock between the concurrent cleanup thread and the GC workers that are trying to allocate and waiting for more free regions to be made available.
Reviewed-by: iveresov, jcoomes

Summary: move symbols from permgen into C heap and reference count them
Reviewed-by: never, acorn, jmasa, stefank

Summary: Update the Major and Build numbers for HS21
Reviewed-by: jcoomes

Summary: A race between the concurrent cleanup thread and the VM thread while it is processing the "expanded sparse table list" causes both threads to try to free the same sparse table entry and either causes one of the threads to fail or leaves the entry in an inconsistent state. The solution is purge all entries on the expanded list that correspond go regions that are being cleaned up.
Reviewed-by: brutisso, johnc