Summary: Extend the SA to recognize the G1CollectedHeap and implement any code that's needed by our serviceability tools (jmap, jinfo, jstack, etc.) that depend on the SA.
Reviewed-by: never, poonam, johnc

Reviewed-by: tonyp, never, phh, jmasa

Reviewed-by: johnc
Contributed-by: alejandro.murillo@oracle.com

Reviewed-by: jmasa, ysr, kvn

Reviewed-by: kvn

Summary: shared fix necessary for ARM/PPC
Reviewed-by: twisti, roland

Summary: ARM only, avoid assertion failures for huge constants generated by C1 shared code
Reviewed-by: never, vladidan

Summary: Fixed warnings which prevent building VM with old compilers.
Reviewed-by: never

Summary: Fix _numa_used_node_list array size specification
Reviewed-by: kvn, johnc, jmasa, ysr

Summary: Replace assert with check to delete MachTemp nodes only when they are really dead.
Reviewed-by: never

Summary: When refactoring the code for a previous fix, a condition was not correctly negated which prevents the G1 policy from adding the correct number of old regions to the CSet when the young gen size is fixed. The changeset also fixes a small syntactical issue in g1ErgoVerbose.hpp which is causing compiler warnings.
Reviewed-by: brutisso, ysr

Reviewed-by: kvn, twisti

Reviewed-by: kvn

Reviewed-by: jrose, twisti, kvn, coleenp

Reviewed-by: kvn, twisti

Reviewed-by: johnc
Contributed-by: alejandro.murillo@oracle.com

Summary: Revert changes which caused regression.
Reviewed-by: never

Reviewed-by: brutisso, ysr

Summary: Make G1 handle young gen size command line flags more consistently
Reviewed-by: tonyp, jwilhelm

Summary: Fixed inconsistencies and mistakes in the young list target length calculations so that a) the calculated target length is optimal (before, it was not), b) other parameters like max survivor size and max gc locker eden expansion are always consistent with the calculated target length (before, they were not always), and c) the resulting target length was always bound by desired min and max values (before, it was not).
Reviewed-by: brutisso, johnc

Summary: PhaseChaitin::yank_if_dead() should be able to handle MachTemp inputs as a special case and yank them.
Reviewed-by: never, kvn

Summary: Add regression test.
Reviewed-by: never

Reviewed-by: jrose, never

Summary: changes necessary for some JSR292 ports
Reviewed-by: jrose, dholmes

Summary: Return correct answers from os::numa_*() for UMA machines or if NUMA API is not supported
Reviewed-by: johnc

Summary: If and when the reference handler thread is able to use the discovered field to link reference objects in its pending list, so will GC. In that case, GC will scan through this field once a reference object has been placed on the pending list, but not scan that field before that stage, as the field is used by the concurrent GC thread to link discovered objects. When ReferenceHandleR thread does not use the discovered field for the purpose of linking the elements in the pending list, as would be the case in older JDKs, the JVM will fall back to the old behaviour of using the next field for that purpose.
Reviewed-by: jcoomes, mchung, stefank

Summary: restore unrolling code for CaffeineMark.
Reviewed-by: never

Summary: It introduces ergonomic decision logging in G1 for the following heuristics: heap sizing, collection set construction, concurrent cycle initiation, and partially-young GC start/end. The code has a bit of refactoring in a few places to make the decision logging possible. It also replaces alternative ad-hoc logging that we have under different parameters and switches (G1_DEBUG, G1PolicyVerbose).
Reviewed-by: johnc, ysr