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

8133530: Add JFR event for evacuation statistics Summary: Introduce two new JFR events for young/old generation allocation statistics based on previous changes. Reviewed-by: ehelin, mgerdin

8073013: Add detailed information about PLAB memory usage Summary: Track and provide information about direct allocation, region end waste and failure waste for G1. Reviewed-by: jmasa, david, ehelin, mgerdin

8133470: Uses of Atomic methods in plab.hpp should be moved to .inline.hpp file Summary: Fix include file dependencies according to general guidelines for plab.hpp Reviewed-by: ehelin, mgerdin

8003237: G1: Reduce unnecessary (and failing) allocation attempts when handling an evacuation failure Summary: Remember for every generation whether the memory for that generation has already been exhausted. If so, do not try to get a new region for these generations. Further, if the last generation is full, early exit from copy_to_survivor_space. Reviewed-by: jmasa, brutisso

8133825: Remove the class G1CollectorPolicyExt Reviewed-by: jwilhelm, ecaspole

8133821: Refactor initialization of the heap and the collector policy Reviewed-by: pliden, tschatzl

8133537: clarify position of unlock options in error messages Reviewed-by: coleenp, dholmes, coffeys

Merge

8080289: Intermediate writes in a loop not eliminated by optimizer Summary: Move Stores out of loop (after or before) when possible Reviewed-by: kvn, vlivanov

8133599: Unsafe.getAndSetObject() is no longer intrinsified by c2 Summary: off by 1 error in c2 intrinsic filtering logic Reviewed-by: dlong, kvn, shade

8130847: Cloned object's fields observed as null after C2 escape analysis Summary: Eliminated instance/array written to by an array copy variant must be correctly initialized when reallocated at a deopt Reviewed-by: kvn, vlivanov

8019968: Reference CAS induces GC store barrier even on failure Reviewed-by: kvn, adinn, roland

8133349: CMS: Assert failed: Ctl pt invariant Summary: _survivor_chunk_array should be sized based on PLAB::min_size() not ThreadLocalAllocBuffer::min_size() Reviewed-by: tschatzl, jwilhelm

8130308: Too low memory usage in TestPromotionFromSurvivorToTenuredAfterMinorGC.java Reviewed-by: dfazunen, brutisso

8133669: Remove unused code in Arguments 8133455: VM ignores setting of the -XX:MemoryRestriction flag. Reviewed-by: dholmes, kbarrett

8133678: test fails due to 'CICompilerCount=0 must be at least 1' missing from stdout/stderr Summary: We changed the constraint error message formatting for CICompilerCount, but forgot to change the corresponding test. Reviewed-by: kbarrett, dcubed

Merge

Merge

8133553: Running with -XX:+UseParallelGC -XX:OldSize=30k crashes jvm Reviewed-by: jwilhelm, sjohanss

8087324: Use semaphores when starting and stopping GC task threads Reviewed-by: jmasa, sjohanss