8178380: Module system implementation refresh (5/2017)
Reviewed-by: lfoltan, hseigel, mchung, sspitsyn
Contributed-by: alan.bateman@oracle.com, serguei.spitsyn@oracle.com

8177530: Module system implementation refresh (4/2017)
Reviewed-by: lfoltan, sspitsyn
Contributed-by: alan.bateman@oracle.com, harold.seigel@oracle.com, mandy.chung@oracle.com

8174823: Module system implementation refresh (3/2017)
Reviewed-by: sspitsyn, dholmes, lfoltan, mchung

8168503: JEP 297: Unified arm32/arm64 Port
Reviewed-by: kvn, enevill, ihse, dholmes, erikj, coleenp, cjplummer

8167194: [JVMCI] no reliable mechanism for querying JVMCI system properties
Reviewed-by: kvn

8156500: Move Reference pending list into VM to prevent deadlocks
Summary: Move reference pending list and locking into VM
Reviewed-by: coleenp, dholmes, dcubed, mchung, plevart
Contributed-by: kim.barrett@oracle.com, per.liden@oracle.com

8157907: Incorrect inclusion of atomic.hpp instead of atomic.inline.hpp
Summary: Remove atomic.inline.hpp and move the contents back into atomic.hpp
Reviewed-by: stefank, pliden, simonis

8159461: bigapps/Kitchensink/stressExitCode hits assert: Must be VMThread or JavaThread
Reviewed-by: fparain, simonis, dcubed

8161274: [JVMCI] compiler/jvmci/events/JvmciNotifyInstallEventTest.java fails with NoClassDefFound
Reviewed-by: kvn, twisti

8160121: [JVMCI] JvmciNotifyBootstrapFinishedEventTest.java failed NoClassDefFoundError: jdk/vm/ci/runtime/JVMCI
Reviewed-by: kvn

Merge

8159335: Fix problems with stack overflow handling.
Reviewed-by: dlong, coleenp, mdoerr

8153394: Add Unified Logging to make it easy to trace time taken in initPhase2
Summary: Added modules+startuptime logging for initPhase2 via TraceTime class
Reviewed-by: rehn, hseigel, mockner

Merge

8152311: [JVMCI] allow JVMCI compiler to change the compilation policy for a method
Reviewed-by: kvn, never

8073500: Prevent certain commercial flags from being changed at runtime
Summary: Implement new writeable mechanism for flag control
Reviewed-by: coleenp, iklam

Merge

8151956: Support non-continuous CodeBlobs in HotSpot
Reviewed-by: iveresov, thartmann, simonis

8154580: Save mirror in interpreter frame to enable cleanups of CLDClosure
Summary: GC walks the mirror using OopClosure rather than using CLDClosure in oops_interpreted_do()
Reviewed-by: dlong, twisti, stefank

Merge

8152905: hs_err file is missing gc threads
Summary: List the GC threads in the hs_err file in the "Other Threads" section
Reviewed-by: dcubed, coleenp

Merge

Merge

8074553: Crash with assert(!is_unloaded()) failed: should not call follow on unloaded nmethod
Summary: Sweeper thread needs to override nmethods_do() to prevent G1 from unloading _scanned_nmethod.
Reviewed-by: kvn, mgerdin

8132524: Missing includes to resourceArea.hpp
Summary: Files that use ResourceMark are missing the include of resourceArea.hpp
Reviewed-by: tschatzl, jwilhelm

8152632: Rename LogHandle(...) to Log(...)
Reviewed-by: brutisso, mlarsson, rprotacio

8151442: jstack doesn't close quotation marks properly with threads' name greater than 1996 characters
Reviewed-by: dsamersoff, kevinw

Merge

8150015: Integrate TraceTime with Unified Logging more seamlessly
Reviewed-by: coleenp, dholmes

8151601: Cleanup locking of the Reference pending list
Reviewed-by: brutisso, stefank

8153498: Update the PostVMInitHook mechanism to use an internal package in the base module
Reviewed-by: alanb, lfoltan

Merge

8151470: [JVMCI] remove up-call to HotSpotJVMCICompilerConfig.selectCompiler
Reviewed-by: dnsimon, vlivanov

8142968: Module System implementation
Summary: Initial integration of JEP 200, JEP 260, JEP 261, and JEP 282
Reviewed-by: acorn, ccheung, coleenp, ctornqvi, dholmes, dsimms, gtriantafill, iklam, jiangli, mgronlun, mseledtsov, cjplummer, sspitsyn, stefank, twisti, hseigel, lfoltan, alanb, mchung, dfazunen
Contributed-by: alan.bateman@oracle.com, alex.buckley@oracle.com, jonathan.gibbons@oracle.com, karen.kinnear@oracle.com, mandy.chung@oracle.com, mark.reinhold@oracle.com, harold.seigel@oracle.com, lois.foltan@oracle.com, calvin.cheung@oracle.com, christian.tornqvist@oracle.com, erik.joelsson@oracle.com, george.triantafillou@oracle.com, igor.ignatyev@oracle.com, ioi.lam@oracle.com, james.laskey@oracle.com, jean-francois.denise@oracle.com, jiangli.zhou@oracle.com, markus.gronlund@oracle.com, serguei.spitsyn@oracle.com, staffan.larsen@oracle.com, sundararajan.athijegannathan@oracle.com

Merge

8145098: JNI GetVersion should return JNI_VERSION_9
Summary: Updated JNI_VERSION for current version to be JNI_VERSION_9
Reviewed-by: hseigel, gtriantafill, dholmes, alanb

8143226: Minor updates to Event Based tracing
Reviewed-by: jbachorik, egahlin

8150619: Improve thread based logging introduced with 8149036
Reviewed-by: coleenp, dholmes

8149036: Add tracing for thread related events at os level
Reviewed-by: coleenp, mlarsson, dholmes

8150162: Move sun.misc.Version to a truly internal package
Reviewed-by: alanb, dholmes, iris, mchung, rriggs

Merge

8149383: Convert TraceBiasedLocking to Unified Logging
Summary: The former -XX:+TraceBiasedLocking flag has been converted to the UL option -Xlog:biasedlocking=info and =trace, with the old option being aliased.
Reviewed-by: dholmes, dcubed

8148630: Convert TraceStartupTime to Unified Logging
Summary: The former -XX:+TraceStartupTime flag has been converted to the UL option -Xlog:startuptime=info
Reviewed-by: coleenp, dholmes

8138922: StubCodeDesc constructor publishes partially-constructed objects on StubCodeDesc::_list
Reviewed-by: kvn, coleenp, dholmes

8063112: Compiler diagnostic commands should have locking instead of safepoint
Summary: Remove unnecessary vm-ops and add locking instead, improve output
Reviewed-by: kvn

Merge

8146690: Make all classes in GC follow the naming convention.
Reviewed-by: dholmes, stefank

8145038: Simplify mut_process_buffer worker id management
Summary: Remove some wasted code
Reviewed-by: kbarrett, tschatzl

8146222: assert(_initialized) failed: TLS not initialized yet!
Reviewed-by: dcubed

Merge

8146011: sun/management/jmxremote/bootstrap/CustomLauncherTest crash at assert(stack_size)
Summary: We were setting stack_overflow_limit before initialization completed which may change the stack base for some solaris systems with unlimited stack
Reviewed-by: goetz, hseigel, gthornbr

8141211: Convert TraceExceptions to Unified Logging
Summary: The -XX:+TraceExceptions flag has been updated to the unified logging framework, i.e. -Xlog:exceptions. The old flag, because it is product-level, has been aliased to the UL option.
Reviewed-by: dholmes, coleenp, mockner

8139864: Improve handling of stack protection zones.
Reviewed-by: stuefe, coleenp, fparain

8146001: Remove support for command line options from JVMCI
Reviewed-by: twisti

Merge

8145270: Need to eagerly initialize JVMCI compiler under -Xcomp
Reviewed-by: twisti

8046936: JEP 270: Reserved Stack Areas for Critical Sections
Reviewed-by: acorn, dcubed

8132510: Replace ThreadLocalStorage with compiler/language-based thread-local variables
Summary: Used compiled-based TLS when available. Additional contributions by Thomas Stufe (AIX) and Andrew Haley (Aarch64)
Reviewed-by: stuefe, bdelsart, dcubed

8143155: Remove TraceRuntimeCalls, TraceJNICalls, and TraceJVMCalls rather than convert to UL
Summary: Removed TraceRuntimeCalls, TraceJNICalls, and TraceJVMCalls options because their output is excessive, not useful, and covered in a more useful way by other options.
Reviewed-by: coleenp, dholmes, ddmitriev

8141641: Runtime: implement range for ErrorLogTimeout
Summary: Implement range=(0, jlong_max/1000)
Reviewed-by: coleenp, ddmitriev, dholmes

Merge

8077571: ObjPtrQueue is poorly named
Summary: Renamed to SATBMarkQueue and renamed files.
Reviewed-by: brutisso, tschatzl, dholmes, twisti

8131045: Obsolete JNIDetachReleasesMonitors
Reviewed-by: dcubed, dsimms, sspitsyn

Merge

8139170: JVMCI refresh
Reviewed-by: kvn

8141132: JEP 254: Compact Strings
Summary: Adopt a more space-efficient internal representation for strings.
Reviewed-by: alanb, bdelsart, coleenp, iklam, jiangli, jrose, kevinw, naoto, pliden, roland, smarks, twisti
Contributed-by: Brent Christian <brent.christian@oracle.com>, Vivek Deshpande <vivek.r.deshpande@intel.com>, Tobias Hartmann <tobias.hartmann@oracle.com>, Charlie Hunt <charlie.hunt@oracle.com>, Vladimir Kozlov <vladimir.kozlov@oracle.com>, Roger Riggs <roger.riggs@oracle.com>, Xueming Shen <xueming.shen@oracle.com>, Aleksey Shipilev <aleksey.shipilev@oracle.com>, Sandhya Viswanathan <sandhya.viswanathan@intel.com>

8139163: InstanceKlass::cast passes through NULL
Summary: Reduce raw (InstanceKlass*) casts and InstanceKlass::cast, which no long allows null
Reviewed-by: twisti, kbarrett

Merge

8136577: Make AbortVMOnException available in product builds
Reviewed-by: coleenp

Merge

8136421: JEP 243: Java-Level JVM Compiler Interface
Reviewed-by: ihse, alanb, roland, coleenp, iveresov, kvn, kbarrett

8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
8042894: runtime: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
Reviewed-by: goetz, brutisso

8134953: Make the GC ID available in a central place
Reviewed-by: pliden, jmasa

8080775: Better argument formatting for assert() and friends
Reviewed-by: kbarrett, pliden

8046148: JEP 158: Unified JVM Logging
Reviewed-by: coleenp, sla

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

8130459: Add additional validation after heap creation
Summary: Some PLAB related flags' validation can happen after heap creation. Introduced additional stage of validation check.
Reviewed-by: coleenp, dholmes, kbarrett, gziemski, ecaspole, ddmitriev

8082782: vm crash on StressRedefineWithoutBytecodeCorruption fails with assert(((Metadata*)obj)->is_valid()) failed: obj is valid
Summary: Walk compile task for Method* to not deallocate, store methods in methodHandle while compile task is being taken off compile queue
Reviewed-by: dcubed, sspitsyn

8130448: thread dump improvements, comment additions, new diagnostics inspired by 8077392
Reviewed-by: dholmes, coleenp

8087333: Optionally Pre-Generate the HotSpot Template Interpreter
Summary: Optional support for pregenerated template interpreter
Reviewed-by: coleenp, dholmes, kvn

8080925: Make error log write timeout parameter configurable
Reviewed-by: sla, coleenp, ctornqvi, dholmes

Merge

8122937: [JEP 245] Validate JVM Command-Line Flag Arguments.
Summary: Validate the arguments to all JVM command-line flags so as to avoid crashes, and ensure that appropriate error messages are displayed when they are invalid.
Reviewed-by: ddmitriev, dholmes, kbarrett, drwhite, brutisso, coleenp

8080776: ARM 32 bit binaries do not run on 64 bit ARM v8 hardware
Summary: Need to know arm cpu type earlier in the init sequence to avoid illegal instruction
Reviewed-by: dholmes, dlong, bdelsart

8079792: GC directory structure cleanup
Reviewed-by: brutisso, stefank, david

Merge

7006810: G1: Introduce peace-of-mind checking in the Suspendible Thread Set
Summary: Add asserts to ensure thread is in the right state.
Reviewed-by: tschatzl, pliden

Merge

8069005: Hotspot crashes in System.out.println with assert(resolved_method->method_holder()->is_linked()) failed: must be linked
Summary: move java.lang.Class initialization sooner in bootstrapping the jvm
Reviewed-by: dholmes, hseigel

8078601: print_concurrent_locks should be guarded with INCLUDE_SERVICES
Reviewed-by: mgronlun, sla, dholmes

8076457: Fix includes of inline.hpp in GC code
Reviewed-by: pliden, jmasa

8077301: Optimized build is broken
Reviewed-by: kbarrett, brutisso

8076314: Remove the static instance variable SharedHeap:: _sh
Reviewed-by: pliden, jmasa

8076225: Move the thread claim parity from SharedHeap to Thread
Reviewed-by: brutisso, jwilhelm, kbarrett

8075735: Missing include causes minimal build failure
Summary: Added the missing include.
Reviewed-by: jprovino, dholmes, stefank

8061205: MetadataOnStackMark only needs to walk code cache during class redefinition
Summary: Only do full metadata walk during class redefinition and only walk handles during class unloading.
Reviewed-by: sspitsyn, stefank

Merge

8073464: GC workers do not have thread names
Reviewed-by: brutisso, tschatzl

8072439: fix for 8047720 may need more work
Summary: Cleanup PeriodTask_lock usage. Also reviewed by varming@gmail.com.
Reviewed-by: dholmes, dcubed, mgronlun, coleenp
Contributed-by: varming@gmail.com, daniel.daugherty@oracle.com

8073387: Move VerifyOopClosures out from genOopClosures.hpp
Reviewed-by: brutisso, mgerdin, coleenp

Merge

8047290: Make Mutex::_no_safepoint_check_flag locks verify that this lock never checks for safepoint
Summary: Ensure consistent safepoint checking in Mutex/Monitor locking methods.
Reviewed-by: dholmes, dcubed, coleenp
Contributed-by: max.ockner@oracle.com

6898462: The escape analysis with G1 cause crash assertion src/share/vm/runtime/vframeArray.cpp:94
Summary: OOM during reallocation of scalar replaced objects in deoptimization causes crashes
Reviewed-by: kvn, jrose

Merge

8064669: compiler/whitebox/AllocationCodeBlobTest.java crashes / asserts
Reviewed-by: kvn, anoll

8060074: os::free() takes MemoryTrackingLevel but doesn't need it
Summary: Cleaned up unused arguments in os::free and it's callers.
Reviewed-by: lfoltan, coleenp, ctornqvi, dholmes
Contributed-by: max.ockner@oracle.com

Merge

8059677: Thread.getName() instantiates Strings
Reviewed-by: coleenp, dholmes, sla

8062307: 'Reference handler' thread triggers assert w/ TraceThreadEvents
Summary: Removed unused and non-working TraceThreadEvents option
Reviewed-by: coleenp, jiangli

Merge

8043770: File leak in MemNotifyThread::start() in hotspot.src.os.linux.vm.os_linux.cpp
Summary: Fixed by removing all code related to LowMemoryProtection, which removed offending code.
Reviewed-by: dholmes, minqi

8062370: Various minor code improvements
Summary: A lot of fixes useful to improve the code quality.
Reviewed-by: coleenp, dholmes

Merge

8046809: vm/mlvm/meth/stress/compiler/deoptimize CodeCache is full.
Summary: Use separate sweeper thread; enables more aggressive sweeping.
Reviewed-by: kvn, jrose

Merge

8056240: Investigate increased GC remark time after class unloading changes in CRM Fuse
Reviewed-by: mgerdin, coleenp, bdelsart

7102541: RFE: os::set_native_thread_name() cleanups
Summary: implement os::set_native_thread_name() on windows, linux
Reviewed-by: sla, ctornqvi, simonis
Contributed-by: thomas.stuefe@sap.com

8057535: add a thread extension class
Reviewed-by: mgerdin, bdelsart, jcoomes

8057109: manual cleanup of white space issues prior to Contended Locking reorder and cache line bucket
Reviewed-by: fparain, sspitsyn, coleenp

8057107: cleanup indent white space issues prior to Contended Locking reorder and cache line bucket
Reviewed-by: fparain, sspitsyn, coleenp

8046598: Scalable Native memory tracking development
Summary: Enhance scalability of native memory tracking
Reviewed-by: coleenp, ctornqvi, gtriantafill

Merge

Merge

8049325: Introduce and clean up umbrella headers for the files in the cpu subdirectories.
Summary: Introduce and clean up umbrella headers for the files in the cpu subdirectories.
Reviewed-by: lfoltan, coleenp, dholmes

8004128: NPG: remove stackwalking in Threads::gc_prologue and gc_epilogue code
Summary: remove bcx and mdx handling. We no longer have to convert bytecode pointers to indices for GC since Methods aren't moved.
Reviewed-by: mgerdin, kvn

Merge

8049421: G1 Class Unloading after completing a concurrent mark cycle
Reviewed-by: tschatzl, ehelin, brutisso, coleenp, roland, iveresov
Contributed-by: stefan.karlsson@oracle.com, mikael.gerdin@oracle.com

8049420: Backout 8048248 to correct attribution
Reviewed-by: ehelin, brutisso

8048248: G1 Class Unloading after completing a concurrent mark cycle
Reviewed-by: tschatzl, ehelin, brutisso, coleenp, roland, iveresov

8047714: Fix for JDK-6546236 made Solaris os::yield() a no-op
Reviewed-by: hseigel, lfoltan

8047104: cleanup misc issues prior to Contended Locking reorder and cache
Summary: Checkpoint misc cleanups for Contended Locking prior to first optimization bucket.
Reviewed-by: dholmes, sspitsyn, dice

8048241: Introduce umbrella header os.inline.hpp and clean up includes
Reviewed-by: coleenp, dholmes, lfoltan

8047720: Xprof hangs on Solaris
Summary: Update use of PeriodicTask_lock in WatcherThread::stop() to avoid safepoint deadlock.
Reviewed-by: mgronlun, coleenp

8044775: Improve usage of umbrella header atomic.inline.hpp.
Reviewed-by: stefank, kvn

Merge

8044796: G1: Enable G1CollectedHeap::stop()
Reviewed-by: brutisso, sjohanss

8046758: cleanup non-indent white space issues prior to Contended Locking cleanup bucket
Summary: Checkpoint do_space_filter.ksh cleanups for Contended Locking.
Reviewed-by: sspitsyn, coleenp

8043224: -Xcheck:jni improvements to exception checking and excessive local refs
Summary: Warning when not checking exceptions from function that require so, also when local refs expand beyond capacity.
Reviewed-by: zgu, coleenp, hseigel

8031819: Remove legacy jdk checks and code
Summary: Delete old jdk specific code.
Reviewed-by: dholmes, coleenp, zgu, lfoltan

Merge

8044768: Backout fix for JDK-8040807
Reviewed-by: brutisso, ehelin

8042933: assert(capacity_until_gc >= committed_bytes) failed
Reviewed-by: stefank, jmasa

8040807: G1: Enable G1CollectedHeap::stop()
Reviewed-by: brutisso, jmasa, tschatzl

8041623: Solaris Studio 12.4 C++ 5.13, CHECK_UNHANDLED_OOPS use of class oop's copy constructor definitions causing error level diagnostic.
Summary: Fix several minor compilation issues with volatile oops for CHECK_UNHANDLED_OOPS support.
Reviewed-by: coleenp, hseigel

8037816: Fix for 8036122 breaks build with Xcode5/clang
Summary: Repaired or selectively disabled offending formats; future-proofed with additional checking
Reviewed-by: kvn, jrose, stefank

Merge

8042195: Introduce umbrella header orderAccess.inline.hpp.
Reviewed-by: dholmes, kvn, stefank, twisti

Merge

6885993: Named Thread: introduce print() and print_on(outputStream* st) methods
Summary: Eliminating duplicated code by introducing print_on(outputStream* st) methods in NamedThread
Reviewed-by: twisti, coleenp, dholmes

8036956: remove EnableInvokeDynamic flag
Summary: The EnableInvokeDynamic flag and all support code is removed because it is not longer used in JDK 9.
Reviewed-by: kvn, twisti
Contributed-by: Tobias Hartmann <tobias.hartmann@oracle.com>

8016302: Change type of the number of GC workers to unsigned int (2)
Reviewed-by: tschatzl, jwilhelm

Merge

8028498: runtime/SharedArchiveFile/CdsDifferentObjectAlignment.java asserts in RT_Baseline
Summary: Preventing GCs to occur before VM is completely initialized. This was previously partly done by one part of the GC locker which not was removed.
Reviewed-by: coleenp, pliden

8031320: Use Intel RTM instructions for locks
Summary: Use RTM for inflated locks and stack locks.
Reviewed-by: iveresov, twisti, roland, dcubed

8025842: Convert warning("Thread holding lock at safepoint that vm can block on") to fatal(...)
Reviewed-by: iveresov, roland, coleenp

Merge

8035393: Use CLDClosure instead of CLDToOopClosure in frame::oops_interpreted_do
Reviewed-by: tschatzl, coleenp

Merge

Merge

Merge

Merge

Merge

Merge

Merge

Merge

8017313: PPC64 (part 6): stack handling improvements
Summary: Precompute limit for stack overflow check.
Reviewed-by: kvn, coleenp

8034080: Remove the USDT1 dtrace code from Hotspot
Reviewed-by: dholmes, coleenp

Merge

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

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

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

8029726: On OS X some dtrace probe names are mismatched with Solaris
8029727: On OS X dtrace probes Call<type>MethodA/Call<type>MethodV are not fired.
8029728: On OS X dtrace probes SetStaticBooleanField are not fired
Reviewed-by: kamg, dsamersoff

8026877: Error in opening JAR file when invalid jar specified with -Xbootclasspath/a on OpenJDK build
Reviewed-by: coleenp, twisti

8023014: CodeSweeperSweepNoFlushTest.java fails with HS crash
Summary: Ensure ensure correct initialization of compiler runtime
Reviewed-by: kvn, twisti

7195622: CheckUnhandledOops has limited usefulness now
Summary: Enable CHECK_UNHANDLED_OOPS in fastdebug builds across all supported platforms.
Reviewed-by: coleenp, hseigel, dholmes, stefank, twisti, ihse, rdurbin
Contributed-by: lois.foltan@oracle.com

Merge

Merge

8010722: assert: failed: heap size is too big for compressed oops
Summary: Use conservative assumptions of required alignment for the various garbage collector components into account when determining the maximum heap size that supports compressed oops. Using this conservative value avoids several circular dependencies in the calculation.
Reviewed-by: stefank, dholmes

Merge

8024007: Misc. cleanup of static agent code
Summary: Minor cleanup of static agent code from 8014135
Reviewed-by: dcubed, sspitsyn

Merge

8021353: Event based tracing is missing thread exit
Reviewed-by: allwin, acorn, dcubed, dholmes, egahlin

Merge

8022595: JSR292: deadlock during class loading of MethodHandles, MethodHandleImpl & MethodHandleNatives
Reviewed-by: kvn, coleenp, dholmes

8014135: The JVMTI specification does not conform to recent changes in JNI specification
Summary: Added support for statically linked agents
Reviewed-by: sspitsyn, bobv, coleenp

8004872: Early loading of HashMap and StringValue under -XX:+AggressiveOpts can be removed
Summary: this fix also removes the -XX:+UseStringCache option
Reviewed-by: dholmes, acorn, iklam

8020701: Avoid crashes in WatcherThread
Reviewed-by: acorn, dcubed, dsimms

8016131: nsk/sysdict/vm/stress/chain tests crash the VM in 'entry_frame_is_first()'
Reviewed-by: jrose, kvn, mgronlun

7162400: Intermittent java.io.IOException: Bad file number during HotSpotVirtualMachine.executeCommand
Summary: Intermittent java.io.IOException: Bad file number during HotSpotVirtualMachine.executeCommand
Reviewed-by: dcubed, dholmes, sspitsyn, mgerdin, ctornqvi, dsamersoff

7143807: ResourceMark nesting problem in stringStream
Reviewed-by: kvn, dcubed

7133260: AllocationProfiler uses space in metadata and doesn't seem to do anything useful.
Summary: Remove -Xaprof and Klass::_alloc_count & ArrayKlass::_alloc_size.
Reviewed-by: stefank, coleenp

8008964: NPG: Memory regression: Thread::_metadata_handles uses 1 KB per thread.
Summary: Reduce default size of Thread::_metadata_handles from 300 to 30
Reviewed-by: coleenp, sspitsyn

8005849: JEP 167: Event-Based JVM Tracing
Reviewed-by: acorn, coleenp, sla
Contributed-by: Karen Kinnear <karen.kinnear@oracle.com>, Bengt Rutisson <bengt.rutisson@oracle.com>, Calvin Cheung <calvin.cheung@oracle.com>, Erik Gahlin <erik.gahlin@oracle.com>, Erik Helin <erik.helin@oracle.com>, Jesper Wilhelmsson <jesper.wilhelmsson@oracle.com>, Keith McGuigan <keith.mcguigan@oracle.com>, Mattias Tobiasson <mattias.tobiasson@oracle.com>, Markus Gronlund <markus.gronlund@oracle.com>, Mikael Auno <mikael.auno@oracle.com>, Nils Eliasson <nils.eliasson@oracle.com>, Nils Loodin <nils.loodin@oracle.com>, Rickard Backman <rickard.backman@oracle.com>, Staffan Larsen <staffan.larsen@oracle.com>, Stefan Karlsson <stefan.karlsson@oracle.com>, Yekaterina Kantserova <yekaterina.kantserova@oracle.com>

Merge

8013132: Add a flag to turn off the output of the verbose verification code
Reviewed-by: johnc, brutisso

8012907: anti-delta fix for 8010992
Summary: anti-delta fix for 8010992 until 8012902 can be fixed
Reviewed-by: acorn, minqi, rdurbin

8010992: Remove calls to global ::operator new[] and new
Summary: disable use of global operator new and new[] which could cause unexpected exception and escape from NMT tracking.
Reviewed-by: coleenp, dholmes, zgu
Contributed-by: yumin.qi@oracle.com

8011343: Add new flag for verifying the heap during startup
Summary: Perform verification during VM startup under control of new flag and within a VMOperation.
Reviewed-by: stefank, jmasa, brutisso

8010463: G1: Crashes with -UseTLAB and heap verification
Summary: Some parts of the G1 heap can only be walked during a safepoint. Skip verifying these parts of the heap when verifying during JVM startup.
Reviewed-by: brutisso, tschatzl

8005716: Enhance JNI specification to allow support of static JNI libraries in Embedded JREs
Reviewed-by: dlong, alanb, mduigou

8007476: assert(the_owner != NULL) failed: Did not find owning Java thread for lock word address
Summary: Make deadlock detection a little more robust in the case of being unable to find the JavaThread associated with an object lock.
Reviewed-by: sla, acorn

Merge

Merge

Merge

8001384: G1: assert(!is_null(v)) failed: narrow oop value can never be zero
Summary: Flush any deferred card mark before a Java thread exits.
Reviewed-by: brutisso, jmasa

Merge

8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
Summary: Rename INCLUDE_ALTERNATE_GCS to INCLUDE_ALL_GCS and replace SERIALGC with INCLUDE_ALL_GCS.
Reviewed-by: coleenp, stefank

8000692: Remove old KERNEL code
Summary: Removed depreciated kernel VM source code from hotspot VM
Reviewed-by: dholmes, acorn

Merge

8004018: Remove old initialization flags
Reviewed-by: dholmes, stefank
Contributed-by: erik.helin@oracle.com

8005936: PrintNMTStatistics doesn't work for normal JVM exit
Summary: Moved NMT shutdown code to JVM exit handler to ensure NMT statistics is printed when PrintNMTStatistics is enabled
Reviewed-by: acorn, dholmes, coleenp

Merge

8001028: Improve GC option handling
Summary: If there are not enough native resources to create the ReferenceHandler or Finalizer Java threads, the VM will attempt to throw an OOME before the java.lang.Class class has been initialized. This can result in assertion failures and other crashes. Move the initialization of the java.lang.Class class to just before the initialization of the java.lang.ref.Finalizer class.
Reviewed-by: jwilhelm, dholmes, coleenp

8004741: Missing compiled exception handle table entry for multidimensional array allocation
Summary: Added missing exception path for multidimensional array allocation and use Throwable type instead of OutOfMemoryError for allocation's exception.
Reviewed-by: twisti

Merge

8003868: fix shark for latest HotSpot and LLVM
Reviewed-by: twisti
Contributed-by: Roman Kennke <rkennke@redhat.com>

8003935: Simplify the needed includes for using Thread::current()
Reviewed-by: dholmes, rbackman, coleenp

8003720: NPG: Method in interpreter stack frame can be deallocated
Summary: Pass down a closure during root scanning to keep the class of the method alive.
Reviewed-by: coleenp, jcoomes

7198334: UseNUMA modifies system parameters on non-NUMA system
Summary: The flags MinHeapDeltaBytes and UseNUMAInterleaving must be adjusted after the OS have adjusted the UseNUMA flag in the method os::init_2.
Reviewed-by: dholmes, brutisso
Contributed-by: erik.helin@oracle.com

Merge

8001471: Klass::cast() does nothing
Summary: Remove function Klass::cast() and calls to it.
Reviewed-by: dholmes, coleenp

Merge

8001185: parsing of sun.boot.library.path in os::dll_build_name somewhat broken
Summary: dll_dir can contain multiple paths, need to parse them correctly when loading agents
Reviewed-by: dholmes, dlong
Contributed-by: bill.pittore@oracle.com

7127792: Add the ability to change an existing PeriodicTask's execution interval
Summary: Enables dynamic enrollment / disenrollment from the PeriodicTasks in WatcherThread.
Reviewed-by: dholmes, mgronlun

8002078: hs_err_pid file should report full JDK version string
Reviewed-by: dholmes, sspitsyn, kmo

7199092: NMT: NMT needs to deal overlapped virtual memory ranges
Summary: Enhanced virtual memory tracking to track committed regions as well as reserved regions, so NMT now can generate virtual memory map.
Reviewed-by: acorn, coleenp

8000617: It should be possible to allocate memory without the VM dying.
Reviewed-by: coleenp, kamg

Merge

7189254: Change makefiles for more flexibility to override defaults
Summary: Change makefiles so that targets and parameters can be overridden by alternate makefiles.
Reviewed-by: dholmes, coleenp

7177003: C1: LogCompilation support
Summary: add LogCompilation support in C1 - both client and tiered mode.
Reviewed-by: twisti, kvn

Merge

7190089: NMT ON: NMT failed assertion on thread's stack base address
Summary: Solaris only, record stack info to NMT after stack size adjustment was made for primordial threads
Reviewed-by: kvn, acorn, coleenp

7194254: jstack reports wrong thread priorities
Reviewed-by: dholmes, sla, fparain
Contributed-by: Dmytro Sheyko <dmytro_sheyko@hotmail.com>

7198529: NPG: assert with NMT code in Thread destructor
Summary: Thread stack's base address can be NULL if it is not started or exited before recording the base
Reviewed-by: kvn, fparain

7181995: NMT ON: NMT assertion failure assert(cur_vm->is_uncommit_record() || cur_vm->is_deallocation_record
Summary: Fixed virtual memory records merge and promotion logic, should be based on sequence number vs. base address order
Reviewed-by: coleenp, acorn

6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>

Merge

6995781: Native Memory Tracking (Phase 1)
7151532: DCmd for hotspot native memory tracking
Summary: Implementation of native memory tracking phase 1, which tracks VM native memory usage, and related DCmd
Reviewed-by: acorn, coleenp, fparain

7176856: add the JRE name to the error log
Reviewed-by: coleenp, jrose, kvn, twisti
Contributed-by: Krystal Mok <sajia@taobao.com>

7160924: jvmti: GetPhase returns incorrect phase before VMInit event is issued
Reviewed-by: acorn, dcubed

7150390: JFR test crashed on assert(_jni_lock_count == count) failed: must be equal
Reviewed-by: dholmes, minqi, kvn, coleenp

7145243: Need additional specializations for argument parsing framework
Reviewed-by: acorn, fparain
Contributed-by: nils.loodin@oracle.com

7013347: allow crypto functions to be called inline to enhance performance
Reviewed-by: kvn

7141200: log some interesting information in ring buffers for crashes
Reviewed-by: kvn, jrose, kevinw, brutisso, twisti, jmasa

7115199: Add event tracing hooks and Java Flight Recorder infrastructure
Summary: Added a nop tracing infrastructure, JFR makefile changes and other infrastructure used only by JFR.
Reviewed-by: acorn, sspitsyn
Contributed-by: markus.gronlund@oracle.com

6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
Summary: Select number of GC threads dynamically based on heap usage and number of Java threads
Reviewed-by: johnc, ysr, jcoomes

7090904: JSR 292: JRuby junit test crashes in PSScavengeRootsClosure::do_oop
Reviewed-by: kvn, never, jrose

Merge

7098194: integrate macosx-port changes
Summary: Integrate bsd-port/hotspot and macosx-port/hotspot changes as of 2011.09.29.
Reviewed-by: kvn, dholmes, never, phh
Contributed-by: Christos Zoulas <christos@zoulas.com>, Greg Lewis <glewis@eyesbeyond.com>, Kurt Miller <kurt@intricatesoftware.com>, Alexander Strange <astrange@apple.com>, Mike Swingler <swingler@apple.com>, Roger Hoover <rhoover@apple.com>, Victor Hernandez <vhernandez@apple.com>, Pratik Solanki <psolanki@apple.com>

Merge

6484982: G1: process references during evacuation pauses
Summary: G1 now uses two reference processors - one is used by concurrent marking and the other is used by STW GCs (both full and incremental evacuation pauses). In an evacuation pause, the reference processor is embedded into the closures used to scan objects. Doing so causes causes reference objects to be 'discovered' by the reference processor. At the end of the evacuation pause, these discovered reference objects are processed - preserving (and copying) referent objects (and their reachable graphs) as appropriate.
Reviewed-by: ysr, jwilhelm, brutisso, stefank, tonyp

7089790: integrate bsd-port changes
Reviewed-by: kvn, twisti, jrose
Contributed-by: Kurt Miller <kurt@intricatesoftware.com>, Greg Lewis <glewis@eyesbeyond.com>, Jung-uk Kim <jkim@freebsd.org>, Christos Zoulas <christos@zoulas.com>, Landon Fuller <landonf@plausible.coop>, The FreeBSD Foundation <board@freebsdfoundation.org>, Michael Franz <mvfranz@gmail.com>, Roger Hoover <rhoover@apple.com>, Alexander Strange <astrange@apple.com>

7086585: make Java field injection more flexible
Reviewed-by: jrose, twisti, kvn, coleenp

7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
Reviewed-by: kvn

7083786: dead various dead chunks of code
Reviewed-by: iveresov, kvn

7061204: clean the chunk table synchronously in embedded builds
Reviewed-by: dholmes, never, jwilhelm, kvn

7051430: CMS: ongoing CMS cycle should terminate abruptly to allow prompt JVM termination at exit
Summary: It turns out that there is no need to explicitly stop CMS since the JVM is taken down at a terminal safepoint during which CMS threads are (terminally) inactive. This will need to be revised if and when we evolve in the future to a point where we allow JVM reincarnation in the same process, but those changes will be much more sweeping than just terminating CMS threads. The unused ::stop() methods will be removed in a separate CR. Also include in this CR is the fix for a small typo in the spelling of UseGCLogFileRotation in a message in arguments.cpp, brought to our attention by Rainer Jung and reviewed by minqi.
Reviewed-by: johnc, jwilhelm

7045513: JSR 292 inlining causes crashes in methodHandleWalk.cpp
Reviewed-by: jrose

6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
Reviewed-by: kvn, iveresov

7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
Reviewed-by: kvn, twisti

6817525: turn on method handle functionality by default for JSR 292
Summary: After appropriate testing, we need to turn on EnableMethodHandles and EnableInvokeDynamic by default.
Reviewed-by: never, kvn, jrose, phh

7017732: move static fields into Class to prepare for perm gen removal
Reviewed-by: kvn, coleenp, twisti, stefank

7022037: Pause when exiting if debugger is attached on windows
Reviewed-by: dsamersoff, kamg, hosterda

Merge

7017673: Remove setting of the sun.jkernel.DownloadManager as a boot classloader hook
Reviewed-by: alanb, dcubed, coleenp

6472925: OutOfMemoryError fails to generate stack trace as it now ought
Summary: Print an additional message for OOM during stack trace printing
Reviewed-by: dholmes, phh, acorn, kamg, dcubed

6990754: Use native memory and reference counting to implement SymbolTable
Summary: move symbols from permgen into C heap and reference count them
Reviewed-by: never, acorn, jmasa, stefank

6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
Summary: Restore use of stillborn flag
Reviewed-by: acorn, alanb

6994753: Implement optional hook to a Java method at VM startup.
Reviewed-by: mchung, acorn

6814943: getcpool001 catches more than one JvmtiThreadState problem
Summary: Mark field volatile, use membars, and change access order to close race
Reviewed-by: dcubed, dholmes

7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
Summary: Track allocated bytes in Thread's, update on TLAB retirement and direct allocation in Eden and tenured, add JNI methods for ThreadMXBean.
Reviewed-by: coleenp, kvn, dholmes, ysr

Merge

7001363: java/dyn/InvokeDynamic should not be a well-known class in the JVM
Summary: Because of the removal of language support, the JDK 7 API for JSR 292 no longer includes a public class named java/dyn/InvokeDynamic.
Reviewed-by: jrose, kvn

6348631: remove the use of the HPI library from Hotspot
Summary: move functions from hpi library to hotspot, communicate with licensees and open source community, check jdk for dependency, file CCC request
Reviewed-by: coleenp, acorn, dsamersoff

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

Merge

Merge

6990192: VM crashes in ciTypeFlow::get_block_for()
Reviewed-by: never

6988353: refactor contended sync subsystem
Summary: reduce complexity by factoring synchronizer.cpp
Reviewed-by: dholmes, never, coleenp

Merge

6988363: Rebrand vm vendor property settings (jdk7 only)
Summary: Vendor properties should be initialized after JDK version is determined.
Reviewed-by: kamg, ohair, dcubed, dholmes

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

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

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

6986270: guarantee(*bcp != Bytecodes::_monitorenter || exec_mode != Deoptimization::Unpack_exception) fails
Summary: Propagate the compiler type of the deopting method to vframeArrayElement::unpack_on_stack()
Reviewed-by: jrose, never

Merge

6975006: assert(check.is_deoptimized_frame()) failed: missed deopt
Reviewed-by: kvn, twisti

Merge

6378314: Bad warning message when agent library not found. local directory is not searched.
Summary: Print a more detailed error message for agent library load failure.
Reviewed-by: jcoomes, never, ohair, coleenp
Contributed-by: jeremymanson@google.com

Merge

6975078: assert(allocated_on_res_area() || allocated_on_C_heap() || allocated_on_arena()
Summary: Pass the check in ResourceObj() if _allocation value is already set and object is allocated on stack.
Reviewed-by: dholmes, johnc

6953477: Increase portability and flexibility of building Hotspot
Summary: A collection of portability improvements including shared code support for PPC, ARM platforms, software floating point, cross compilation support and improvements in error crash detail.
Reviewed-by: phh, never, coleenp, dholmes

Merge

6730276: JDI_REGRESSION tests fail with "Error: count must be non-zero" error on x86
Summary: Modify assembler code to check for 0 count for all copy routines.
Reviewed-by: never, ysr, jcoomes

Merge

Merge

6852873: Reduce safepoint cleanup time
Summary: New optional flags to reduce inflated monitor cleanup times
Reviewed-by: chrisphi, dice

6958292: C1: Enable parallel compilation
Summary: Enable parallel compilation in C1
Reviewed-by: never, kvn

6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair

6929067: Stack guard pages should be removed when thread is detached
Summary: Add code to unmap stack guard area when thread is detached.
Reviewed-by: coleenp, kamg

6914050: jvm assertion "guard pages must be in use" in -Xcomp mode
Summary: Move creating stack guard pages in jni attach thread before potential java call rather than after. Also cleanup stack guard pages when jni attach fails
Reviewed-by: never, dholmes

6902182: 4/4 Starting with jdwp agent should not incur performance penalty
Summary: Rename can_post_exceptions support to can_post_on_exceptions. Add support for should_post_on_exceptions flag to permit per JavaThread optimizations.
Reviewed-by: never, kvn, dcubed
Contributed-by: tom.deneau@amd.com

6896647: card marks can be deferred too long
Summary: Deferred card marks are now flushed during the gc prologue. Parallel[Scavege,OldGC] and SerialGC no longer defer card marks generated by COMPILER2 as a result of ReduceInitialCardMarks. For these cases, introduced a diagnostic option to defer the card marks, only for the purposes of testing and diagnostics. CMS and G1 continue to defer card marks. Potential performance concern related to single-threaded flushing of deferred card marks in the gc prologue will be addressed in the future.
Reviewed-by: never, johnc

Merge

6914300: ciEnv should export all well known classes
Reviewed-by: kvn, twisti

6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
Summary: During the work for 6829187 we have fixed a number of basic bugs which are logically grouped with 6815692 and 6858164 but which must be reviewed and pushed separately.
Reviewed-by: kvn, never

6361589: Print out stack trace for target thread of GC crash
Summary: If GC crashed with java thread involved, print out the java stack trace in error report
Reviewed-by: never, ysr, coleenp, dholmes

6888880: JKernel VM to inject the sun.jkernel.DownloadManager as a boot classloader hook
Summary: Call sun.jkernel.DownloadManager.setBootClassLoaderHook during the kernel VM initialization
Reviewed-by: alanb, coleenp, acorn

6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
6889757: G1: enable card mark elision for initializing writes from compiled code (ReduceInitialCardMarks)
Summary: Defer the (compiler-elided) card-mark upon a slow-path allocation until after the store and before the next subsequent safepoint; G1 now answers yes to can_elide_tlab_write_barriers().
Reviewed-by: jcoomes, kvn, never

Merge

6863023: need non-perm oops in code cache for JSR 292
Summary: Make a special root-list for those few nmethods which might contain non-perm oops.
Reviewed-by: twisti, kvn, never, jmasa, ysr

6876794: 4/4 sp07t002 hangs very intermittently
Summary: remove over locking by VMThread on "is thread suspended?" check
Reviewed-by: dholmes, acorn, andrew

6862919: Update copyright year
Summary: Update copyright for files that have been modified in 2009, up to 07/09
Reviewed-by: tbell, ohair

6820167: GCALotAtAllSafepoints + FullGCALot(ScavengeALot) options crash JVM
Summary: Short-circuit gc-a-lot attempts by non-JavaThreads; SkipGCALot c'tor to elide re-entrant gc-a-lot attempts.
Reviewed-by: apetrusenko, jcoomes, jmasa, kamg

6699669: Hotspot server leaves synchronized block with monitor in bad state
Summary: Remove usage of _highest_lock field in Thread so that is_lock_owned won't depend on the correct update of that field.
Reviewed-by: never, dice, acorn

6810653: Change String cache class used by Hotspot from String to StringValue
Summary: Change create_vm() to load and initialize StringValue rather than String.
Reviewed-by: kvn

6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
6660573: G1: BigApps Failure : guarantee(satb_mq_set.completed_buffers_num() == 0,"invariant")
Summary: When exiting a mutator thread is removed from the thread list before it has a chance to flush its SATB and barrier queues. If GC happens at this moment the objects that are refererred from these queues can be moved, which will case a crash. The fix is simply to flush the buffers before removing a thread from the list.
Reviewed-by: jcoomes, tonyp

Merge

6719149: Wrong "java/lang/String should not be loaded yet" assertion in fastdebug bits with UseStringCache
Summary: Assertion is invalid because java.lang.String may be initialized just before this assertion.
Reviewed-by: phh

Merge

Merge

Merge

Merge

6711316: Open source the Garbage-First garbage collector
Summary: First mercurial integration of the code for the Garbage-First garbage collector.
Reviewed-by: apetrusenko, iveresov, jmasa, sgoldman, tonyp, ysr

6740526: sun/management/HotspotThreadMBean/GetInternalThreads.java test failed
Reviewed-by: dholmes, dcubed

6608862: segv in JvmtiEnvBase::check_for_periodic_clean_up()
Reviewed-by: dholmes, dcubed, jcoomes

6721093: -XX:AppendRatio=N not supported
Summary: Add mechanism to ignore unsupported flags for a set period of time
Reviewed-by: acorn, never, coleenp

6719955: Update copyright year
Summary: Update copyright year for files that have been modified in 2008
Reviewed-by: ohair, tbell

6714404: Add UseStringCache switch to enable String caching under AggressiveOpts
Summary: Poke String.stringCacheEnabled during vm initialization
Reviewed-by: never

Merge

6667833: Remove CacheTimeMillis
Summary: Remove -XX:+CacheTimeMillis option and associated functionality
Reviewed-by: acorn, never

Merge

6453355: 4/4 new No_Safepoint_Verifier uses fail during GC
Summary: (for Serguei) Clean up use of No_Safepoint_Verifier in JVM TI
Reviewed-by: dcubed

6621621: HashMap front cache should be enabled only with AggressiveOpts
Reviewed-by: sbohne, xlu

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