Merge

6987555: JSR 292 unboxing to a boolean value fails on big-endian SPARC Reviewed-by: never, jrose

6991512: G1 barriers fail with 64bit C1 Summary: Fix compare-and-swap intrinsic problem with G1 post-barriers and issue with branch ranges in G1 stubs on sparc Reviewed-by: never, kvn

6991065: missed a review comment in 6829194 Reviewed-by: kvn

6829194: JSR 292 needs to support compressed oops Reviewed-by: kvn, jrose

6990549: Zero and Shark fixes after 6978355 and 6953144 Reviewed-by: twisti Contributed-by: Gary Benson <gbenson@redhat.com>

6980792: Crash "exception happened outside interpreter, nmethods and vtable stubs (1)" Reviewed-by: kvn

Merge

6980838: G1: guarantee(false) failed: thread has an unexpected active value in its SATB queue Summary: Under certain circumstances a safepoint could happen between a JavaThread object being created and that object being added to the Java threads list. This could cause the active field of that thread's SATB queue to get out-of-sync with respect to the other Java threads. The solution is to activate the SATB queue, when necessary, before adding the thread to the Java threads list, not when the JavaThread object is created. The changeset also includes a small fix to rename the surrogate locker thread from "Surrogate Locker Thread (CMS)" to "Surrogate Locker Thread (Concurrent GC)" since it's also used in G1. Reviewed-by: iveresov, ysr, johnc, jcoomes

Merge

6983311: G1: LoopTest hangs when run with -XX:+ExplicitInvokesConcurrent Summary: Clear the concurrent marking "in progress" flag while the FullGCCount_lock is held. This avoids a race that can cause back to back System.gc() calls, when ExplicitGCInvokesConcurrent is enabled, to fail to initiate a marking cycle causing the requesting thread to hang. Reviewed-by: tonyp, ysr

6794422: Perm gen expansion policy for concurrent collectors Summary: Concurrent collectors should expand the perm gen without a full STW GC, but possibly by triggering a concurrent collection. Temporary band-aid for G1 where no concurrent collection is kicked off since the perm gen is not collected concurrently. Reviewed-by: johnc

6988678: fatal error deadlock handling was unintentionally disabled Reviewed-by: ysr

6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time Summary: Inserted missing yield(check)s in closures used during the work-stealing phase of parallel concurrent marking, a missing synchronous yield-request in the cms perm gen allocation path, and a terminator-terminator for the offer_termination invocation that monitors the yield status of the concurrent marking task. Elaborated some documentation comments and made some task queue termination loop flags configurable at start-up to aid debugging in the field. Reviewed-by: jmasa, johnc, poonam

6423256: GC stacks should use a better data structure 6942771: SEGV in ParScanThreadState::take_from_overflow_stack Reviewed-by: apetrusenko, ysr, pbk

6941395: G1: Use only lock-free versions of region stack push() and pop() Summary: Re-enable use of the lock-free versions of region stack push() and pop() by recording aborted regions in a thread-local structure, which are then processed when scanning of the region stack restarts. The previous locking versions of these routines are retained for diagnostic purposes. Reviewed-by: tonyp, ysr

6983296: build sanity checks for jdk7 should require SS12u1 Reviewed-by: ohair

6984287: Regularize how GC parallel workers are specified. Summary: Associate number of GC workers with the workgang as opposed to the task. Reviewed-by: johnc, ysr

Merge

6989736: fix mapfile warnings on solaris Reviewed-by: kvn, iveresov, jcoomes

6988018: dtrace/hotspot/MethodInvocation/MethodInvocation002 crashes with client compiler Reviewed-by: iveresov, kvn, kamg

6979458: VM crashes when -XX:ObjectAlignmentInBytes is too big Summary: Set upper limit 256 for ObjectAlignmentInBytes value. Reviewed-by: never, iveresov

6989368: Regression in scimark2.MonteCarlo in jdk7_b112 on Linux Summary: Fix ciMethod::instructions_size() to return correct value Reviewed-by: kvn, twisti

6968348: Byteswapped memory access can point to wrong location after JIT Reviewed-by: twisti, kvn, iveresov

6916062: assert(_inserts <= _insert_limit,"hash table overflow") in NodeHash::hash_insert Summary: Missing check for not empty worklist when puting memory node back on worklist and expecting address type update. Reviewed-by: never

6988346: 6986046 breaks tiered Summary: adjusted profiling code generation to use the new ValueStack implementation; lowered optimization level for c1_LinearScan.cpp on solaris x64. Reviewed-by: kvn, never

6988303: 6986046 breaks build with recent gcc Summary: fixes build break Reviewed-by: never, kvn

6987634: JSR 292 assert(start_bci() >= 0 && start_bci() < code_size()) failed: correct osr_bci argument Reviewed-by: never, kvn

6987763: assert(kind() == EmptyExceptionState) failed: only EmptyExceptionStates can be modified Reviewed-by: roland, kvn, iveresov

6987115: Non-tiered compilation policy creates unnecessary C1 threads Summary: Fixed NonTieredCompPolicy::compiler_count() to return correct thread count. Reviewed-by: twisti, kvn