8133456: HeapRegionManager::shrink_by() iterates suboptimally across regions Reviewed-by: brutisso, tbenson

8067336: Allow that PLAB allocations at the end of regions are flexible Summary: PLAB allocations may return a buffer that is between minimum size (current allocation) and the desired size. This allows removes a large amount of fragmentation at the end of regions. Reviewed-by: tbenson, mgerdin

Merge

8130910: hsperfdata file is created in wrong directory and not cleaned up if /tmp/hsperfdata_<username> has wrong permissions Summary: Add check for fchir() failure and disable shared PerfMemory in that case. Reviewed-by: dcubed, simonis, gthornbr Contributed-by: christoph.langer@sap.com

Merge

Merge

8133951: Zero interpreter asserts in stubRoutines.cpp Summary: Allow zero sized code buffer when checking if there's enough remaining size Reviewed-by: kvn

8067339: PLAB reallocation might result in failure to allocate object in that recently allocated PLAB Summary: Properly size the PLAB to make sure that the object to allocate always has enough space in it. Reviewed-by: mgerdin, brutisso

8073146: G1 merges thread local age tables too early with global age table Summary: Move merging of age and survivor table to the end of GC. Reviewed-by: mgerdin, david

8040162: Avoid reallocating PLABs between GC phases in G1 Summary: Allocate G1ParScanThreadState at the start of GC and only deallocate at the end of GC. This automatically keeps the current PLAB intact without flushing it (and loosing lots of memory) for every reallocation. Reviewed-by: david, mgerdin