Merge

8028391: Make the Min/MaxHeapFreeRatio flags manageable Summary: Made the flags Min- and MaxHeapFreeRatio manageable, and implemented support for these flags in ParallalGC. Reviewed-by: sla, mgerdin, brutisso

8031290: Adjust call to getisax() for additional words returned Reviewed-by: kvn, iveresov, twisti

8031686: G1: assert(_hrs.max_length() == _expansion_regions) failed Summary: Using pointer_delta to avoid overflowing pointer calculation. Reviewed-by: jmasa, tschatzl

8030177: G1: Enable TLAB resizing Reviewed-by: tschatzl, stefank, jmasa

8025856: Fix typos in the GC code Summary: Fix about 440 typos in comments in the VM code Reviewed-by: mgerdin, tschatzl, coleenp, kmo, jcoomes

8032379: Remove the is_scavenging flag to process_strong_roots Summary: Refactor the strong root processing to avoid using a boolean in addition to the ScanOption enum. Reviewed-by: stefank, tschatzl, ehelin, jmasa

8020277: Young GC could be extremely slow due to assertion in ObjectStartArray::object_starts_in_range 8009462: Young GC's (ParNewGC and SerialGC) have unexpected variances. Summary: Removed the assertion slowing down GC. Reviewed-by: stefank, mgerdin

8031776: Remove the unnecessary enum GenRemSet::Name Reviewed-by: stefank, tschatzl, jwilhelm

8027746: Remove do_gen_barrier template parameter in G1ParCopyClosure Summary: Remove the above mentioned template parameter and related unused code. Also remove some classes that are never used. Reviewed-by: stefank, mgerdin, jwilhelm

8027454: Do not traverse string table during G1 remark when treating them as strong roots during initial mark Summary: Do not try to unlink string table entries unconditionally during remark. This is without side effects as the preceding initial mark always uses the string table as strong roots. Needs to be fixed with class unloading during concurrent mark. Reviewed-by: brutisso, mgerdin

8027476: Improve performance of Stringtable unlink 8027455: Improve symbol table scan times during gc pauses Summary: Parallelize string table and symbol table scan during remark and full GC. Some additional statistics output if the experimental flag G1TraceStringSymbolTableScrubbing is set. Reviewed-by: mgerdin, coleenp, brutisso

Merge

Merge

8032827: NMT: missing virtual memory tagging in os::workaround_expand_exec_shield_cs_limit() Summary: Fixed missing virtual memory type tagging in os::workaround_expand_exec_shield_cs_limit() function Reviewed-by: hseigel, coleenp

Merge

7010732: SA_ALTROOT only works if running the SA tools from their build directory. Summary: fixed SA packaging scripts Reviewed-by: sla, kevinw

8028275: Metaspace ShrinkGrowTest causes fatal error if run with JFR Summary: Clean up initialization from Threads::create_vm() so that exceptions cause vm_exit_during_initialzation without an exception mark. Reviewed-by: dholmes, hseigel

7015395: [TESTBUG] runtime/6626217/Test6626217.sh fails if compilation happens fast enough for timestamps to be equal. Summary: Insert 2 second sleep between copying of the src files and the compilation, to make sure the timestamps of *.class files are in the future of *.java files. Reviewed-by: coleenp, fparain

8032662: test/compiler/ciReplay/TestSA.sh should report ulimit issues Reviewed-by: kvn, iignatyev Contributed-by: stefan.sarne@oracle.com

8032247: SA: Constantpool lookup for invokedynamic is not implemented Summary: implement constant pool lookup for invokedynamic Reviewed-by: sla, sspitsyn

Merge

8028553: The JVM should not throw VerifyError when 'overriding' a static final method in a superclass. Summary: Check if method is static before throwing exception. Reviewed-by: kamg, coleenp, lfoltan, fparain

8028280: ParkEvent leak when running modified runThese which only loads classes Summary: Use spin lock to manage ParkEvent and PlatformEvent free lists. Reviewed-by: dholmes, fparain

8031427: AllocObject and Unsafe.allocateInstance segfault for primitive types Summary: The fix just throws an InstantiationException if the Klass is NULL. Reviewed-by: coleenp, twisti, jrose Contributed-by: gdub <duboscq@ssw.jku.at>

Merge

6651256: jstack: DeleteGlobalRef method call doesn't lead to descreasing of global refs count shown by jstack Summary: jni_DeleteGlobalRef does not really release the jni handle, instead, set the handle point to JNIHandles::_deleted_handle which holds an oop instance (java/lang/Object) in Java heap and never be GC'ed. When counting number of global reference, it counts all the handles on the chain list, which includes the already deleted ones. Reviewed-by: zgu, sla, coleenp Contributed-by: yumin.qi@oracle.com

8032466: serviceability/sa/jmap-hashcode/Test8028623.java fails with compilation errors Reviewed-by: dsamersoff, sla

8031968: Mac OS X: VM starts the agent by calling both Agent_OnAttach and Agent_OnAttach_L functions if its agent library is dynamically linked. Summary: Make sure we only look for statically linked agents in the main process image Reviewed-by: dsamersoff, bpittore, dcubed

8032250: Add trace event for VM flag changes Reviewed-by: coleenp, ehelin, egahlin, mgronlun