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

7012088: jump to 0 address because of lack of memory ordering in SignatureHandlerLibrary::add Summary: Write method signature handler under lock to prevent race with growable array resizing Reviewed-by: dsamersoff, dholmes

Merge

7016023: Enable building ARM and PPC from src/closed repository Reviewed-by: dholmes, bdelsart

6588413: Use -fvisibility=hidden for gcc compiles 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

Merge

7016998: gcutil class LinearLeastSquareFit doesn't initialize some of its fields Summary: Initialize _sum_x_squared, _intercept and _slope in constructor. Reviewed-by: bobv, coleenp

6923430: G1: assert(res != 0,"This should have worked.") 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