Merge

6987107: Add variable to add to but not modify non-fcs version string Reviewed-by: jcoomes, dholmes, andrew, kvn

6780143: hs203t003 hits SIGSEGV/EXCEPTION_ACCESS_VIOLATION with -XX:+UseCompressedOops Summary: Using r12 as temporary register around call_VM trashes heapbase becausecall_VM doesn't always return immediately to following code (eg forward_exception, popframe and early return support). Reviewed-by: never, kvn

7003860: G1: assert(_cur_alloc_region == NULL || !expect_null_cur_alloc_region) fails Summary: Wrong assumption about expecting the current alloc region expected to be NULL in expand_and_allocate(). Reviewed-by: brutisso, ysr

6983204: G1: Nightly test nsk/regression/b4958615 failing with +ExplicitGCInvokesConcurrent Summary: Enable reference discovery during concurrent marking by setting the reference processor field of the concurrent marking closure. Keep reference objects on the discovered reference lists alive during incremental evacuation pauses until they are processed at the end of concurrent marking. Reviewed-by: ysr, tonyp

6974966: G1: unnecessary direct-to-old allocations Summary: This change revamps the slow allocation path of G1. Improvements include the following: a) Allocations directly to old regions are now totally banned. G1 now only allows allocations out of young regions (with the only exception being humongous regions). b) The thread that allocates a new region (which is now guaranteed to be young) does not dirty all its cards. Each thread that successfully allocates out of a young region is now responsible for dirtying the cards that corresponding to the "block" that just got allocated. c) allocate_new_tlab() and mem_allocate() are now implemented differently and TLAB allocations are only done by allocate_new_tlab(). d) If a thread schedules an evacuation pause in order to satisfy an allocation request, it will perform the allocation at the end of the safepoint so that the thread that initiated the GC also gets "first pick" of any space made available by the GC. e) If a thread is unable to allocate a humongous object it will schedule an evacuation pause in case it reclaims enough regions so that the humongous allocation can be satisfied aftewards. f) The G1 policy is more careful to set the young list target length to be the survivor number +1. g) Lots of code tidy up, removal, refactoring to make future changes easier. Reviewed-by: johnc, ysr

6989984: Use standard include model for Hospot Summary: Replaced MakeDeps and the includeDB files with more standardized solutions. Reviewed-by: coleenp, kvn, kamg

Merge

7002129: Zero and Shark fixes, 3rd Summary: 6970683 and 6953144 introduced changes that need to be implemented for Zero and Shark. Reviewed-by: twisti Contributed-by: Gary Benson <gbenson@redhat.com>

Merge

6837842: JNI_CreateJavaVM crashes under impersonation Reviewed-by: acorn, dholmes

6751923: JNDI wake up when clock_settime() is called Summary: Ported Chris Phillips' patch from jdk5 to jdk7 Reviewed-by: chrisphi, coleenp

Merge

7000491: assert(false) failed: should be optimized out in SharedRuntime::g1_wb_pre Summary: Wrong value type is used for NULL store when clearing the detail message of the preallocated exception object. Reviewed-by: never, iveresov

7000349: Tiered reacts incorrectly to C1 compilation failures Summary: Fix policy reaction to C1 comilation failures, make C1 properly report errors. Reviewed-by: kvn

6999491: non-zero COOPs are used when they should not Summary: HeapBaseMinAddress should be used only for a default heap size calculation. Reviewed-by: iveresov, jcoomes, dholmes

Merge

Merge

6978187: G1: assert(ParallelGCThreads> 1 || n_yielded() == _hrrs->occupied()) strikes again Summary: An evacuation failure while copying the roots caused an object, A, to be forwarded to itself. During the subsequent RSet updating a reference to A was processed causing the reference to be added to the RSet of A's heap region. As a result of adding to the remembered set we ran into the issue described in 6930581 - the sparse table expanded and the RSet scanning code walked the cards in one instance of RHashTable (_cur) while the occupied() counts the cards in the expanded table (_next). Reviewed-by: tonyp, iveresov

7000578: CMS: assert(SafepointSynchronize::is_at_safepoint()) failed: Else races are possible Summary: Weakened assert in onj_is_alive() to allow its use at initialization time when is_at_safepoint() normally reports false; added some related asserts to check order of is_init_completed() after Universe::is_fully_initialized(). Reviewed-by: jcoomes

Merge

Merge

6981737: The java.vm.specification.version property is 1.0, seems like it should be 2.0 Summary: Change property value to 1.<major_version> for major_version >= 7 Reviewed-by: dholmes, acorn

6865028: Illegal instructions passing verification prior to 'invokespecial Object.<init>' Summary: Update verifier to conform to spec re: reference vs. 'Object' types Reviewed-by: dholmes, coleenp

Merge

6998802: ScavengeALot: assert(!gch->incremental_collection_failed()) failed: Twice in a row Summary: Weaken assert by excluding scavenges resulting from -XX:+ScavengeALot stress-testing option. Reviewed-by: jmasa, tonyp

6996613: CompactibleFreeListSpace::print should call CompactibleFreeListSpace::print_on, not Space::print_on Reviewed-by: tonyp

6997298: fatal error: must own lock CMS_markBitMap_lock during heap dump Summary: Since we are at a stop-world pause, the existing CMS-phase checks are sufficient for safety, and the locking check can be safely elided. Elaborated documentation comment to the case where class unloading and verification are disabled, and the query happens when we aren't in the sweeping phase, where the answer "false" would be (almost everywhere) too pessimistic. Reviewed-by: jmasa, johnc, tonyp