6940726: Use BIS instruction for allocation prefetch on Sparc Summary: Use BIS instruction for allocation prefetch on Sparc Reviewed-by: twisti

6940733: allocate non static oop fields in super and sub classes together Summary: Use FieldsAllocationStyle=2 to allocate non static oop fields in super and sub classes together Reviewed-by: twisti

6940701: Don't align loops in stubs for Niagara sparc Summary: Don't align loops in stubs for Niagara sparc since NOPs are expensive. Reviewed-by: twisti, never

6940677: Use 64 bytes chunk copy for arraycopy on Sparc Summary: For large arrays we should use 64 bytes chunks copy. Reviewed-by: twisti

6940520: CodeCache::scavenge_root_nmethods_do must fix oop relocations Summary: ScavengeRootsInCode can lead to unfixed code-embedded oops. Reviewed-by: kvn, never

Merge

Merge

6940894: G1: assert(new_obj != 0 || ... "should be forwarded") for compaction tests Summary: Humongous regions may contain multiple objects as a result of being retained as to-space from a previous GC and then re-used as to-space after being tagged as humongous. These changes include a check that causes retained to-space regions that are now tagged as humongous to be disregarded and a new to-space region allocated. Reviewed-by: tonyp, iveresov

6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.") Summary: Make sure that two marking cycles do not overlap, i.e., a new one can only start after the concurrent marking thread finishes all its work. In the fix I piggy-back a couple of minor extra fixes: some general code reformatting for consistency (only around the code I modified), the removal of a field (G1CollectorPolicy::_should_initiate_conc_mark) which doesn't seem to be used at all (it's only set but never read), as well as moving the "is GC locker active" test earlier into the G1 pause / Full GC and using a more appropriate method for it. Reviewed-by: johnc, jmasa, jcoomes, ysr

6940310: G1: MT-unsafe calls to CM::region_stack_push() / CM::region_stack_pop() Summary: Calling the methods region_stack_push() and region_stack_pop() concurrent is not MT-safe. The assumption is that we will only call region_stack_push() during a GC pause and region_stack_pop() during marking. Unfortunately, we also call region_stack_push() during marking which seems to be introducing subtle marking failures. This change introduces lock-based methods for pushing / popping to be called during marking. Reviewed-by: iveresov, johnc

6677708: G1: re-enable parallel RSet updating and scanning Summary: Enable parallel RSet updating and scanning. Reviewed-by: iveresov, jmasa

6937160: G1: should observe GCTimeRatio Summary: Remove the G1GCPercent parameter, that specifies the desired GC overhead percentage in G1, and observe the GCTimeRatio parameter instead. Reviewed-by: jmasa, johnc

Merge

Merge

6938627: Make temporary directory use property java.io.tmpdir when specified Summary: Get java.io.tmpdir property in os::get_temp_directory() and call this instead of harcoding "/tmp". Don't assume trailing file_separator either. Reviewed-by: dholmes, kamg