Merge

Merge

6668573: CMS: reference processing crash if ParallelCMSThreads > ParallelGCThreads Summary: Use _max_num_q = max(discovery_degree, processing_degree), and let balance_queues() redistribute from discovery_degree to processing_degree of queues. This should also allow a more dynamic and flexible parallelism policy in the future. Reviewed-by: jmasa, johnc

6896099: Integrate CMS heap ergo with default heap sizing ergo 6627787: CMS: JVM refuses to start up with -Xms16m -Xmx16m 7000125: CMS: Anti-monotone young gen sizing with respect to maximum whole heap size specification 7027529: CMS: retire CMSUseOldDefaults flag Summary: Simplify CMS heap sizing code, relying on ergonomic initial sizing consistent with other collectors for the most part, controlling only young gen sizing to rein in pause times. Make CMS young gen sizing default statically cpu-dependant. Remove inconsistencies wrt generation sizing and policy code, allowing for the fixing for 6627787 and 7000125. For 7027529, retire the flag CMSUseOldDefaults which had been introduced as a bridge from JDK 5 to JDK 6 a number of years ago. Reviewed-by: brutisso, poonam

Merge

6820066: Check that -XX:ParGCArrayScanChunk has a value larger than zero. Summary: Check that -XX:ParGCArrayScanChunk has a value larger than zero. Reviewed-by: johnc, jmasa, ysr

6987703: iCMS: Intermittent hang with gc/gctests/CallGC/CallGC01 and +ExplicitGCInvokesConcurrent Summary: Count enable_icms() and disable_icms() events so as to prevent inteference between concurrent calls, which can cause the iCMS thread to be left stranded in icms_wait() with an unserviced request and no young allocations to unwedge it. Reviewed-by: jcoomes, poonam

7023747: G1: too strict assert in RefineRecordRefsIntoCSCardTableEntryClosure::do_card_ptr in g1RemSet.cpp Summary: Made sure that the assert looks at ParallelGCThreads. Reviewed-by: stefank, tonyp, jwilhelm, johnc

7022943: G1: improve logging to avoid interleaved numbers Summary: Introduced buffered loggging to make sure that log lines are logged one line at a time Reviewed-by: stefank, johnc, dsamersoff

7018056: large pages not always enabled by default Reviewed-by: phh, kvn

7014923: G1: code cleanup Summary: Some G1 code cleanup. Reviewed-by: johnc, jcoomes, jwilhelm

Merge

7011865: JSR 292 CTW fails: !THREAD->is_Compiler_thread() failed: Can not load classes with the Compiler thre Reviewed-by: kvn, never

7028394: Newer AMD Processor Prefetch Defaults Summary: This new default has shown improvement across many workloads. Reviewed-by: kvn Contributed-by: tom.deneau@amd.com

7012648: move JSR 292 to package java.lang.invoke and adjust names Summary: package and class renaming only; delete unused methods and classes Reviewed-by: twisti

6839872: remove implementation inheritance from JSR 292 APIs Summary: consolidate runtime support in java.dyn.MethodHandleNatives; include transitional compatibility logic Reviewed-by: twisti

Merge

7026631: field _klass is incorrectly set for dual type of TypeAryPtr::OOPS Summary: add missing check this->dual() != TypeAryPtr::OOPS into TypeAryPtr::klass(). Reviewed-by: never

7025742: Can not use CodeCache::unallocated_capacity() with fragmented CodeCache Summary: Use largest_free_block() instead of unallocated_capacity(). Reviewed-by: iveresov, never, ysr

6965570: assert(!needs_patching && x->is_loaded(),"how do we know it's volatile if it's not loaded") Reviewed-by: iveresov

6589823: Error: meet not symmetric Summary: arrays pointers meet must fall to bottom if exact array klasses in upper lattice are not equal or super klass is exact. Reviewed-by: never

Merge

7024866: # assert(limit == NULL || limit <= nm->code_end()) failed: in bounds Reviewed-by: kvn, iveresov

7020403: Add AdvancedCompilationPolicy for tiered Summary: This implements adaptive tiered compilation policy. Reviewed-by: kvn, never

Merge

Merge

7011490: Wrong computation results in Test6880034 Summary: incorrect handling of c2i deoptimization on little endian architectures Reviewed-by: never

7019165: Incorrect symbols in pstack output after SymbolTable changes Summary: And out lsb which is set for symbols in constant pool slots to distinguish them from strings Reviewed-by: phh, dholmes, never, dcubed