Merge

8169373: Work around linux NPTL stack guard error.
Summary: Also skip libc guard page for compiler thread, merge similar code on linux platforms, and streamline libc guard page handling on linuxs390, linuxppc, aixppc.
Reviewed-by: dholmes, dcubed, kvn

8170307: Stack size option -Xss is ignored
Reviewed-by: dcubed, sspitsyn

8066474: Remove the lib/ directory from Linux and Solaris images
Reviewed-by: tbell, ihse, kvn

8166560: [s390] Basic enablement of s390 port.
Summary: Also fix problem with ARM Elf configuration.
Reviewed-by: dholmes, coleenp

8140520: segfault on solaris-amd64 with "-XX:VMThreadStackSize=1" option
Summary: Split the single thread_min_stack_allowed into three distinct values (java_thread_min_stack_allowed, compiler_thread_min_stack_allowed and vm_internal_thread_min_stack_allowed) on non-Windows platforms.
Reviewed-by: dcubed, gthornbr, dholmes, coleenp, fparain, aph

8165153: Crash in rebuild_cpu_to_node_map
Summary: use processor_count(), not active_processor_count() to determine physical number of CPUs
Reviewed-by: rehn, cjplummer

8163146: Remove os::check_heap on Windows
Reviewed-by: gtriantafill, coleenp, stuefe

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

8161258: Simplify including platform files.
Summary: Include patform files with macros cpu_header() etc. Do various cleanups of macro usages. Remove _64/_32 from adlc generated files and platform .hpp files. Merge stubRoutines_x86*.hpp. Remove empty mutex_<os>* files.
Reviewed-by: dholmes, coleenp, kbarrett

8160353: narrowing conversion error is occurred with GCC 6
Reviewed-by: kbarrett, dholmes

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

Merge

8140594: Various minor code improvements (compiler)
Summary: Various minor code improvements (compiler)
Reviewed-by: thartmann, kvn

8154715: Missing destructor and/or TLS clearing calls for terminating threads
Summary: clear TLS on return from thread->run() unless already done. Prohibit asynchronous thread deletion.
Reviewed-by: stefank, sspitsyn
Contributed-by: Brian Gardner <openjdk@getsnappy.com>

8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
Reviewed-by: pliden, sjohanss, stuefe

8154566: os_linux.cpp parse_os_info gives non descriptive output on current SLES releases
Summary: For SuSE, read the first line of the /etc/xrelease file, also get PRETTY_NAME from /etc/os_release
Reviewed-by: gthornbr, coleenp

8146879: Add option for handling existing log files in UL
Reviewed-by: dsamersoff, gziemski, rehn

8151939: VM_Version_init() print buffer is too small
Summary: Increase buffer size, use logging to print out version and os information
Reviewed-by: kvn, rprotacio, mockner

Merge

8148425: strerror() function is not thread-safe
Reviewed-by: dholmes, coleenp

8137165: Tests fail in SR_Handler because thread is not VMThread or JavaThread
Reviewed-by: kbarrett

8151593: Cleanup definition/usage of INLINE/NOINLINE macros and add xlC support
Reviewed-by: coleenp, stuefe
Contributed-by: matthias.baesken@sap.com

8150353: PPC64LE: Support RTM on linux
Reviewed-by: mdoerr, kvn
Contributed-by: gromero@linux.vnet.ibm.com

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

8149697: Fix for 8145725 is broken
Summary: As per the existing comment we needed to check the saved 'index' instead
Reviewed-by: gthornbr, dcubed, kbarrett

8148987: [Linux] Allow building on older systems without CPU_ALLOC support
Reviewed-by: dsamersoff, stuefe, dcubed

8145725: Remove the WorkAroundNPTLTimedWaitHang workaround
Reviewed-by: ddmitriev, stuefe, dcubed

6515172: Runtime.availableProcessors() ignores Linux taskset command
Summary: extract processor count from sched_getaffinity mask
Reviewed-by: dcubed, stuefe, gthornbr

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

8144219: [posix] Remove redundant code around os::print_siginfo()
Summary: for posix platforms, consolidate os::print_siginfo() in os_posix.cpp and remove cds fault special handling
Reviewed-by: dholmes, simonis

8145114: const-correctness for ucontext_t* reading functions
Reviewed-by: dholmes, coleenp

8073139: PPC64: User-visible arch directory and os.arch value on ppc64le cause issues with Java tooling
Summary: Set LIBARCH to ppc64le, make SA and hsdis work, have os.arch return ppc64le on PowerPC64 LE
Reviewed-by: dholmes, ihse
Contributed-by: Andrew Hughes <gnu.andrew@redhat.com>, Alexander Smundak <asmundak@google.com>

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

8144881: Various fixes to linux/sparc
Summary: Fixed sigflags printing, format specfiers, codeCache includes and some function returns
Reviewed-by: dsamersoff, simonis

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

8143291: Remove redundant coding around os::exception_name
Reviewed-by: dholmes, coleenp

8136978: Much nearly duplicated code for vmError support
Summary: moved all non os specific code in vmError_[os].cpp to vmError_posix.cpp, moved os specific code to os_[os].cpp and refactored all other references accordingly
Reviewed-by: stuefe, coleenp, dholmes

8141529: Fix handling of _JAVA_SR_SIGNUM
Reviewed-by: dholmes, stuefe, dsamersoff

8140482: Various minor code improvements (runtime)
Reviewed-by: dholmes, coleenp, sspitsyn, dsamersoff

8140648: Clean up remnants of fork1() from non-solaris platforms
Summary: Clean up any remnants of fork1() from Non-Solaris platforms
Reviewed-by: dholmes, goetz

8129526: Solaris: clean up another remnant of interruptible I/O
Reviewed-by: fparain, dcubed

Merge

8140274: methodHandles and constantPoolHandles should be passed as const references
Summary: modified code to use const reference parameters
Reviewed-by: sspitsyn, twisti

8139040: Fix initializations before ShouldNotReachHere() etc. and enable -Wuninitialized on linux.
Reviewed-by: stuefe, coleenp, roland

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

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

8135298: Fix zero builds for "unknown" architectures on linux.
Summary: add zero architectures for default cases
Reviewed-by: coleenp
Contributed-by: Matthias Klose <doko@ubuntu.com>

8029453: java/util/concurrent/locks/ReentrantLock/TimeoutLockLoops.java failed by timeout
Reviewed-by: bdelsart, ddmitriev, dcubed

8080298: Clean up os::...::supports_variable_stack_size()
Reviewed-by: kbarrett, simonis, stuefe, coleenp

6661889: thread id on Linux is inconsistent in error and log outputs
Reviewed-by: dholmes, kvn

8026324: hs_err improvement: Add summary section to hs_err file
8026333: hs_err improvement: Print GC Strategy
8026336: hs_err improvement: Print compilation mode, server, client or tiered
Summary: Added command line, summary cpu and os information to summary section. Moved time of crash and duration in summary section. Add GC strategy and compiler setting (tiered) to enhanced version string in error report. Moved the stack trace sooner in hs_err file.
Reviewed-by: dholmes, ctornqvi, ddmitriev

8087322: Implement a Semaphore utility class
Reviewed-by: kbarrett, dholmes

8078513: [linux] Clean up code relevant to LinuxThreads implementation
Reviewed-by: dholmes, sla, coleenp, simonis

Merge

8085865: hs_err improvement: Printing /proc/cpuinfo makes too long hs_err files
Summary: summarize information from linux-x86; it's too long and redundant
Reviewed-by: gtriantafill, dholmes, mgerdin, dcubed

8079473: allow demangling to be optional in dll_address_to_function_name
Summary: add a demangling boolean argument to dll_address_to_function_name and decode
Reviewed-by: dholmes, simonis

8080718: Make -XX:CreateCoredumpOnCrash control core dumping in all cases
Reviewed-by: sla, dholmes, gtriantafill

Merge

8078470: [Linux] Replace syscall use in os::fork_and_exec with glibc fork() and execve()
Reviewed-by: stuefe, dsamersoff, dcubed

Merge

8079263: Suppress warning about disabling adaptive size policy when enabling UseLargePages with UseNUMA when adaptive size policy is disabled
Reviewed-by: jmasa, jwilhelm

8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
Summary: Remove MAP_FIXED from initial mapping allocation; add tests
Reviewed-by: stefank, coleenp

8077674: BSD build failures due to undefined macros
Reviewed-by: dsamersoff, kbarrett, hseigel

8074354: Make CreateMinidumpOnCrash a new name and available on all platforms
Summary: Rename CreateMinidumpOnCrash which is used only for Windows as CreateCoredumpOnCrash and make it available for all platforms. Changed order for dumping core on Windows to be similar on other platforms. Also reviewed by thomas.stuefe@gmail.com
Reviewed-by: dcubed
Contributed-by: yumin.qi@oracle.com, thomas.stuefe@gmail.com

6983747: Remove obsolete dl_mutex lock
Summary: Unused dl_mutex lock has been removed.
Reviewed-by: hseigel, coleenp, dholmes

8074895: os::getenv is inadequate
Reviewed-by: dholmes, coleenp

8073315: Enable gcc -Wtype-limits and fix upcoming issues.
Summary: Relevant fixes in blockOffsetTable.cpp, os_linux.cpp, parCardTableModRefBS.cpp.
Reviewed-by: jwilhelm, kbarrett, simonis

8072383: resolve conflicts between open and closed ports
Summary: refactor close to remove references to closed ports
Reviewed-by: kvn, simonis, dholmes

Merge

Merge

Merge

8064611: AARCH64: Changes to HotSpot shared code
Summary: Everything except cpu/ and os_cpu/
Reviewed-by: dholmes, goetz, dlong, coleenp, kvn

8068730: Increase the precision of the implementation of java.time.Clock.systemUTC()
Summary: Changes the implementation of java.time.Clock.systemUTC() to take advantage of the maximum resolution of the underlying native clock on which System.currentTimeMillis() is based.
Reviewed-by: dholmes, rriggs, scolebourne, sla

8059586: hs_err report should treat redirected core pattern
Reviewed-by: dholmes, sla, stuefe
Contributed-by: Yasumasa Suenaga <yasuenag@gmail.com>

Merge

Merge

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

Merge

8064580: Move INCLUDE_CDS include section to the end of the include list
Reviewed-by: jwilhelm, brutisso, coleenp, dholmes

8049367: Modular Run-Time Images
Reviewed-by: chegar, dfuchs, ihse, joehw, mullan, psandoz, wetmore
Contributed-by: alan.bateman@oracle.com, alex.buckley@oracle.com, bradford.wetmore@oracle.com, chris.hegarty@oracle.com, erik.joelsson@oracle.com, james.laskey@oracle.com, jonathan.gibbons@oracle.com, karen.kinnear@oracle.com, magnus.ihse.bursie@oracle.com, mandy.chung@oracle.com, mark.reinhold@oracle.com, paul.sandoz@oracle.com, sundararajan.athijegannathan@oracle.com

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

8061552: Contended Locking speedup PlatformEvent unpark bucket
Summary: JEP-143/JDK-8046133 - optimization #2 - speedup PlatformEvent unpark bucket.
Reviewed-by: acorn, dice, dholmes
Contributed-by: dave.dice@oracle.com, karen.kinnear@oracle.com, daniel.daugherty@oracle.com

8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
Summary: Use open(O_CLOEXEC) where available; fall back to FD_CLOEXEC when necessary
Reviewed-by: rasbold, dholmes

8061618: Removed unused networking functions from os class
Reviewed-by: lfoltan, hseigel, dholmes

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

8057777: Cleanup of old and unused VM interfaces
Reviewed-by: coleenp, hseigel, alanb, sherman

Merge

Merge

Merge

8056039: Hotspot does not compile with clang 3.4 on Linux
Reviewed-by: brutisso, sla

Merge

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

8056242: Add function to return structured information about loaded libraries.
Summary: Return structured information about loaded libraries.
Reviewed-by: sla, dsamersoff
Contributed-by: fredrik.arvidsson@oracle.com

8046070: Class Data Sharing clean up and refactoring
Summary: Cleaned up CDS to be more configurable, maintainable and extensible
Reviewed-by: dholmes, coleenp, acorn, mchung

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

8030763: Validate global memory allocation
Summary: Add length checks where necessary
Reviewed-by: coleenp, mschoene

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

Merge

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

8043630: Method os::yield_all() should be removed
Reviewed-by: dholmes, dsimms

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

8044339: Update FilterSpuriousWakeups documentation. Review "Solaris only" vm options descriptions
Reviewed-by: kvn, dholmes, iignatyev

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

8031126: java/lang/management/ThreadMXBean/ThreadUserTime.java fails intermittently
Reviewed-by: coleenp, simonis, goetz, gthornbr

Merge

Merge

8038473: Remove support for old T1 libthread
Reviewed-by: dholmes, coleenp, acorn, dcubed

8033696: "assert(thread != NULL) failed: just checking" due to Thread::current() and JNI pthread interaction
Reviewed-by: dholmes, dsamersoff
Contributed-by: andreas.eriksson@oracle.com

Merge

8036767: PPC64: Support for little endian execution model
Reviewed-by: goetz, kvn, dholmes, simonis
Contributed-by: asmundak@google.com

8038201: Clean up misleading usage of malloc() in init_system_properties_values()
Summary: Remove the misleading malloc macro and cleanup the code
Reviewed-by: dsamersoff, kvn
Contributed-by: goetz.lindenmaier@sap.com

8037340: Linux semaphores to use CLOCK_REALTIME
Reviewed-by: dholmes, sla

6536943: Bogus -Xcheck:jni warning for SIG_INT action for SIGINT in JVM started from non-interactive shell
Summary: Under non-interactive shell, with -Xcheck:jni, check_signal_handler will print out Warning for SHURDOWN2_SIGNAL (SIGINT) which is replaced by non-interactive shell. Fix by supply more information of the replacement to user.
Reviewed-by: acorn, dsamersoff
Contributed-by: yumin.qi@oracle.com

8036122: Fix warning 'format not a string literal'
Reviewed-by: mduigou, kvn

Merge

6546236: Thread interrupt() of Thread.sleep() can be lost on Solaris due to race with signal handler
Reviewed-by: dholmes, dcubed

Merge

8028470: PPC64 (part 214): linux: extend signal handler to catch SIGTRAP on ppc64.
Reviewed-by: kvn

Merge

Merge

8020775: PPC64 (part 12): posix signal printing
Summary: Implement methods printing posix signal information and call them in unix os files.
Reviewed-by: kvn, dholmes, twisti
Contributed-by: thomas.stuefe@sap.com

Merge

Merge

Merge

8016586: PPC64 (part 3): basic changes for PPC64
Summary: added #includes needed for ppc64 port. Renamed _MODEL_ppc to _MODEL_ppc_32 and renamed corresponding old _ppc files to _ppc_32.
Reviewed-by: dholmes, kvn

8016491: PPC64 (part 2): Clean up PPC defines.
Summary: Distinguish PPC, PPC64 and PPC32. PPC should guard code needed on any PPC system. PPC32 and PPC64 should guard code needed in a port for the ppc64 or ppc32 instruction set.
Reviewed-by: kvn

8033931: Several nightly tests failing with assert(imin < imax) failed: Unexpected page size
Summary: Loosen new assert() in get_stack_commited_bottom()
Reviewed-by: dcubed, coleenp, dsamersoff, hseigel
Contributed-by: gerald.thornbrugh@oracle.com

8029775: Solaris code cleanup
8033464: Linux code cleanup
Summary: cleaned up warnings in solaris and linux specific os code.
Reviewed-by: coleenp, fparain, dcubed
Contributed-by: gerald.thornbrugh@oracle.com

8027113: decouple the '-XXaltjvm=<path>' option from the gamma launcher
Summary: decoupled the '-XXaltjvm=<path>' option from the gamma launcher. Clearing the way for removing the remaining cruft associated with the previously removed gamma launcher.
Reviewed-by: dcubed, dholmes

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

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

8027294: Prepare hotspot for non TOD based uptime counter
Summary: Use HR timer when available for os::elapsed_counter() on linux/bsd. Add a new counter for the JVM uptime.
Reviewed-by: dholmes, sla

Merge

8024838: Significant slowdown due to transparent huge pages
Summary: Don't turn on transparent huge pages (-XX:+UseTransparentHugePages) unless explicitly specified on the command line. This has the effect that large pages are never turned on Linux unless the user has explicitly enabled any of the large pages flags: -XX:+UseLargePages, -XX:+UseTransparentHugePages, -XX:+UseHugeTLBFS, and -XX:+UseSHM.
Reviewed-by: jwilhelm, tschatzl, brutisso

8023956: Provide a work-around to broken Linux 32 bit "Exec Shield" using CS for NX emulation (crashing with SI_KERNEL)
Summary: Execute some code at a high virtual address value, and keep mapped
Reviewed-by: coleenp, zgu

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

6986195: correctly identify Ubuntu as the operating system in crash report instead of "Debian"
Summary: Cleanup and document how various Linux release info files are used by print_distro_info().
Reviewed-by: dcubed, dsamersoff, coleenp, iklam, omajid
Contributed-by: gerald.thornbrugh@oracle.com

6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
Summary: Associate CLOCK_MONOTONIC with the pthread_cond_t objects used for relative timed waits
Reviewed-by: dcubed, shade

Merge

Merge

8016155: SIGBUS when running Kitchensink with ParallelScavenge and ParallelOld
Summary: When using NUMA and large pages we need to ease the requirement on which node the memory should be allocated on. To avoid the SIGBUS we now use the memory policy MPOL_PREFERRED, which prefers a certain node, instead of MPOL_BIND, which requires a certain node.
Reviewed-by: jmasa, pliden
Contributed-by: stefan.johansson@oracle.com

8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
Summary: don't re-evaluate stack bounds for main thread before install guard page
Reviewed-by: coleenp, dholmes, dlong

8007074: SIGSEGV at ParMarkBitMap::verify_clear()
Summary: Replace the broken large pages implementation on Linux. New flag: -XX:+UseTransparentHugePages - Linux specific flag to turn on transparent huge page hinting with madvise(..., MAP_HUGETLB). Changed behavior: -XX:+UseLargePages - tries to use -XX:+UseTransparentHugePages before trying other large pages implementations (on Linux). Changed behavior: -XX:+UseHugeTLBFS - Use upfront allocation of Large Pages instead of using the broken implementation to dynamically committing large pages. Changed behavior: -XX:LargePageSizeInBytes - Turned off the ability to use this flag on Linux and provides warning to user if set to a value different than the OS chosen large page size. Changed behavior: Setting no large page size - Now defaults to use -XX:UseTransparentHugePages if the OS supports it. Previously, -XX:+UseHugeTLBFS was chosen if the OS was configured to use large pages.
Reviewed-by: tschatzl, dcubed, brutisso

8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
Summary: Dl_info struct should only be used if dladdr() has returned non-zero (no errors) and always check the dladdr() return value; Dl_info.dli_sname and Dl_info.dli_saddr fields should only be used if non-NULL; update/improve runtime/6888954/vmerrors.sh test
Reviewed-by: dsamersoff, zgu, hseigel, coleenp

8013651: NMT: reserve/release sequence id's in incorrect order due to race
Summary: Fixed NMT race condition for realloc, uncommit and release
Reviewed-by: coleenp, ccheung

8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
Summary: Detect mmap() commit failures in Linux and Solaris os::commit_memory() impls and call vm_exit_out_of_memory(). Add os::commit_memory_or_exit(). Also tidy up some NMT accounting and some mmap() return value checking.
Reviewed-by: zgu, stefank, dholmes, dsamersoff

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>

8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
Summary: Fixed the output of G1SummarizeRSetStats: too small datatype for the number of concurrently processed cards, added concurrent remembered set thread time retrieval for Linux and Windows (BSD uses os::elapsedTime() now), and other cleanup. The information presented during VM operation is now relative to the previous output, not always cumulative if G1SummarizeRSetStatsPeriod > 0. At VM exit, the code prints a cumulative summary.
Reviewed-by: johnc, jwilhelm

Merge

8012260: ciReplay: Include PID into the name of replay data file
Reviewed-by: kvn, twisti

8013398: Adjust number of stack guard pages on systems with large memory page size
Summary: Auto adjust number of stack guard pages on systems with large memory page size
Reviewed-by: bobv, coleenp

8012015: Use PROT_NONE when reserving memory
Summary: Reserved memory had PROT_READ+PROT_WRITE access on Linux/bsd, now changed to PROT_NONE.
Reviewed-by: dholmes, ctornqvi

Merge

8003310: Enable -Wunused-function when compiling with gcc
Summary: Add the -Wunused-function flag and remove a number of unused functions.
Reviewed-by: dholmes, coleenp, kvn

8006103: [parfait] Possible null pointer dereference at hotspot/src/os/linux/vm/os_linux.cpp; os_windows.cpp; os_solaris.cpp; os_bsd.cpp
Reviewed-by: zgu, iklam

Merge

7112912: Message "Error occurred during initialization of VM" on boxes with lots of RAM
Summary: Ergonomics now also takes available virtual memory into account when deciding for a heap size. The helper method to determine the maximum allocatable memory block now uses the appropriate OS specific calls to retrieve available virtual memory for the java process. In 32 bit environments this method now also searches for the maximum actually reservable amount of memory. Merge previously separate implementations for Linux/BSD/Solaris into a single method.
Reviewed-by: jmasa, tamao

8010389: After fix for 7107135 a failed dlopen() call results in a VM crash
Summary: Call dlerror() in VM thread as necessary.
Reviewed-by: coleenp, dholmes

8008257: NMT: assert(new_rec->is_allocation_record()) failed when running with shared memory option
Summary: Corrected virtual memory recording and tagging code when large pages are used
Reviewed-by: coleenp, ccheung

7107135: Stack guard pages are no more protected after loading a shared library with executable stack
Summary: Detect the execstack attribute of the loaded library and attempt to fix the stack guard using Safepoint op.
Reviewed-by: dholmes, zgu
Contributed-by: ioi.lam@oracle.com

8008959: Fix non-PCH build on Linux, Windows and MacOS X
Summary: Fix the build without precompiled headers by either including the missing ".inline.hpp" files into the appropriate files or by turning inline-functions declared in header files into ordinary functions in ".cpp" files.
Reviewed-by: coleenp, stefank, dholmes

8004495: [parfait] False positive Buffer overflow in hotspot/src/os/linux/vm/os_linux.cpp
Summary: Delete the questionable source code because it is for no-longer supported versions of Linux.
Reviewed-by: mikael, coleenp

6749267: Signal handler should save/restore errno
Summary: Save errno before processing signal, then restore it.
Reviewed-by: acorn, sspitsyn

6518907: cleanup IA64 specific code in Hotspot
Summary: removed unused IA64 specific code
Reviewed-by: twisti, kvn, dholmes

8004902: correctness fixes motivated by contended locking work (6607129)
Summary: misc correctness fixes
Reviewed-by: acorn, dholmes, dice, sspitsyn
Contributed-by: dave.dice@oracle.com

8005044: remove crufty '_g' support from HS runtime code
Summary: Phase 2 is removing '_g' support from the Runtime code.
Reviewed-by: dcubed, coleenp, hseigel
Contributed-by: ron.durbin@oracle.com

Merge

8003240: x86: move MacroAssembler into separate file
Reviewed-by: kvn

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

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

8000102: Resolve include conflicts
Summary: Removing include of c1/c1_runtime.hpp and opto/runtime.hpp from all os-files.
Reviewed-by: kvn
Contributed-by: nils.eliasson@oracle.com

7129724: MAC: Core file location is wrong in crash report
Summary: Updated core path location to reflect macosx default
Reviewed-by: dholmes, kamg

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

7165755: OS Information much longer on linux than other platforms
Reviewed-by: sla, dholmes

7151089: PS NUMA: NUMA allocator should not attempt to free pages when using SHM large pages
Summary: Don't attempt to uncommit SHM-based large pages
Reviewed-by: kvn

7142641: -Xshared:on fails on ARM
Summary: map read-only pages MAP_PRIVATE instead of MAP_SHARED
Reviewed-by: dcubed, dholmes
Contributed-by: dean.long@oracle.com

7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
Summary: Add CriticalPriority == MaxPriority+1 and enable scheduling class as well as thread priority to change on Solaris.
Reviewed-by: dholmes, dcubed

7071311: Decoder enhancement
Summary: Made decoder thread-safe
Reviewed-by: coleenp, kamg

7124829: NUMA: memory leak on Linux with large pages
Summary: In os::free_memory() use mmap with the same attributes as for the heap space
Reviewed-by: kvn
Contributed-by: Aleksey Ignatenko <aleksey.v.ignatenko@intel.com>

7117303: VM uses non-monotonic time source and complains that it is non-monotonic
Summary: Replaces calls to os::javaTimeMillis(), which does not (and cannot) guarantee monotonicity, in GC code to an equivalent expression that uses os::javaTimeNanos(). os::javaTimeNanos is guaranteed monotonically non-decreasing if the underlying platform provides a monotonic time source. Changes in OS files are to make use of the newly defined constants in globalDefinitions.hpp.
Reviewed-by: dholmes, ysr

7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
Reviewed-by: dholmes, dsamersoff
Contributed-by: Chris Hegarty <chris.hegarty@oracle.com>

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

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>

7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
Reviewed-by: coleenp, minqi

7087583: Hotspot fails to allocate heap with mmap(MAP_HUGETLB)
Summary: Try using small pages when transparent huge pages allocation fails
Reviewed-by: ysr

7082645: Hotspot doesn't compile on old linuxes after 7060836
Summary: Move syscall ids definitions into os_linux.cpp
Reviewed-by: johnc

7082969: NUMA interleaving
Summary: Support interleaving on NUMA systems for collectors that don't have NUMA-awareness.
Reviewed-by: iveresov, ysr
Contributed-by: Tom Deneau <tom.deneau@amd.com>

7060836: RHEL 5.5 and 5.6 should support UseNUMA
Summary: Add a wrapper for sched_getcpu() for systems where libc lacks it
Reviewed-by: ysr
Contributed-by: Andrew John Hughes <ahughes@redhat.com>

7060842: UseNUMA crash with UseHugreTLBFS running SPECjvm2008
Summary: Use mmap() instead of madvise(MADV_DONTNEED) to uncommit pages
Reviewed-by: ysr

7061212: use o/s low memory notification in embedded builds
Reviewed-by: dholmes, never, jwilhelm, kvn

7061225: os::print_cpu_info() should support os-specific data
Reviewed-by: dholmes, never, jwilhelm, kvn

7043564: compile warning and copyright fixes
Summary: Fixed the warning, also fixed copyrights in a bunch of files.
Reviewed-by: johnc, kvn

7040485: Use transparent huge page on linux by default
Summary: Turn on UseLargePages by default but try only HugeTLBFS method if it is not explicitly specified on the command line.
Reviewed-by: ysr

7037939: NUMA: Disable adaptive resizing if SHM large pages are used
Summary: Make the NUMA allocator behave properly with SHM and ISM large pages.
Reviewed-by: ysr

Merge

7034464: Support transparent large pages on Linux
Summary: Support transparent huge pages on Linux available since 2.6.38
Reviewed-by: iveresov, ysr
Contributed-by: aph@redhat.com

7017193: Small memory leak in get_stack_bounds os::create_stack_guard_pages
Summary: getline() returns -1 but still allocate memory for str
Reviewed-by: dcubed, coleenp

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

7014918: Improve core/minidump handling in Hotspot
Summary: Added Minidump support on Windows, enabled large page core dumps when coredump_filter is present and writing out path/rlimit for core dumps.
Reviewed-by: poonam, dsamersoff, sla, coleenp

Merge

7016023: Enable building ARM and PPC from src/closed repository
Reviewed-by: dholmes, bdelsart

6588413: Use -fvisibility=hidden for gcc compiles
Summary: Add option for gcc 4 and above, define JNIEXPORT and JNIIMPORT to visibility=default, add for jio_snprintf and others since -fvisibility=hidden overrides --version-script definitions.
Reviewed-by: kamg, never

7009828: Fix for 6938627 breaks visualvm monitoring when -Djava.io.tmpdir is defined
Summary: Change get_temp_directory() back to /tmp and %TEMP% like it always was and where the tools expect it to be.
Reviewed-by: phh, dcubed, kamg, alanb

7003707: need to remove (some) system include files from the HotSpot header files
Summary: move socket_available into os_linux.cpp to avoid inclusion of ioctl.h in os_linux.inline.hpp
Reviewed-by: coleenp, stefank, ikrylov

Merge

7003748: Decode C stack frames when symbols are presented (PhoneHome project)
Summary: Implemented in-process C native stack frame decoding when symbols are available.
Reviewed-by: coleenp, never

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

6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
Summary: min_stack_allowed is a compile time constant and Stack*Pages are settable
Reviewed-by: dholmes, kvn

6763959: java.util.concurrent.locks.LockSupport.parkUntil(0) blocks forever
Summary: Absolute time 0 needs to return immediately.
Reviewed-by: phh, dcubed, dholmes

6978641: Fix for 6929067 introduces additional overhead in thread creation/termination paths
Summary: Disable stack bounds checks in product mode other than for the initial thread
Reviewed-by: coleenp, jcoomes, aph

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

6967423: Hotspot support for modules image
Summary: Add hotspot support for modules image
Reviewed-by: acorn

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

6951686: Using large pages on Linux prevents zero based compressed oops
Summary: Use req_addr when attaching shared memory segment.
Reviewed-by: twisti

Merge

6944822: Fix for 6938627 exposes problem with hard-coded buffer sizes
Summary: Make tmpdir buffer sizes MAX_PATH+1
Reviewed-by: dholmes, coleenp
Contributed-by: andreas.kohn@fredhopper.com

6888954: argument formatting for assert() and friends
Reviewed-by: kvn, twisti, apetrusenko, never, dcubed

6938627: Make temporary directory use property java.io.tmpdir when specified
Summary: Get java.io.tmpdir property in os::get_temp_directory() and call this instead of harcoding "/tmp". Don't assume trailing file_separator either.
Reviewed-by: dholmes, kamg

6936168: Recent fix for unmapping stack guard pages doesn't close /proc/self/maps
Summary: Add close to returns (fix for 6929067 also contributed by aph)
Reviewed-by: aph, dcubed, andrew, acorn
Contributed-by: aph@redhat.com, andreas.kohn@fredhopper.com

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

6843629: Make current hotspot build part of jdk5 control build
Summary: Source changes for older compilers plus makefile changes.
Reviewed-by: xlu

6822370: ReentrantReadWriteLock: threads hung when there are no threads holding onto the lock (Netra x4450)
Summary: This day one bug is caused by missing memory barriers in various Parker::park() paths that can result in lost wakeups and hangs.
Reviewed-by: dice, acorn

6890308: integrate zero assembler hotspot changes
Reviewed-by: never
Contributed-by: gbenson@redhat.com

6840196: NUMA allocator: crash in fastdebug during startup on Linux
Summary: With libnuma >1.2 explicity use 1.1 symbols
Reviewed-by: ysr

6838842: NUMA allocator: Segfault during startup on Linux
Summary: Restored os::free_memory() semantics
Reviewed-by: apetrusenko

6819213: revive sun.boot.library.path
Summary: Support multiplex and mutable sun.boot.library.path
Reviewed-by: acorn, dcubed, xlu

6541756: Reduce executable C-heap
Summary: Add executable parameters to reserve_memory and commit_memory to reduce executable memory to only the Code Heap.
Reviewed-by: xlu, kvn, acorn

Merge

6791178: Specialize for zero as the compressed oop vm heap base
Summary: Use zero based compressed oops if java heap is below 32gb and unscaled compressed oops if java heap is below 4gb.
Reviewed-by: never, twisti, jcoomes, coleenp

6814575: Update copyright year
Summary: Update copyright for files that have been modified in 2009, up to 03/09
Reviewed-by: katleman, tbell, ohair

6800586: -XX:+PrintGCDateStamps is using mt-unsafe localtime function
Summary: replaced localtime() with localtime_r() on Solaris and Linux.
Reviewed-by: apetrusenko, dholmes, jmasa

Merge

6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
Summary: Fixed the wrong cast between types since more restrictions are imposed by gcc 4.3.2
Reviewed-by: jcoomes, acorn, phh, never

6778662: fixes 64-bits libraries directory search paths on linux
Summary: Fixes 64-bits libraries directory search paths.
Reviewed-by: never
Contributed-by: langel@redhat.com

6727377: VM stack guard pages on Windows should PAGE_READWRITE not PAGE_EXECUTE_READWRITE
Summary: Make reguard_stack change access to RW, not execute and use os::protect_memory with the new parameter when change needed to X.
Reviewed-by: acorn, jcoomes

6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
Summary: In os::Linux::rebuild_cpu_to_node_map() fix the size of the CPU bitmap. Fixed arithmetic in MutableNUMASpace::adaptive_chunk_size() that could cause overflows and underflows of the chunk_size variable.
Reviewed-by: apetrusenko

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

Merge

Merge

6720130: NUMA allocator: The linux version should search for libnuma.so.1
Summary: Search for libnuma.so.1 on Linux and liblgrp.so.1 on Solaris.
Reviewed-by: jmasa

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

6716785: implicit null checks not triggering with CompressedOops
Summary: allocate alignment-sized page(s) below java heap so that memory accesses at heap_base+1page give signal and cause an implicit null check
Reviewed-by: kvn, jmasa, phh, jcoomes

Merge

6681796: hotspot build failure on gcc 4.2.x (ubuntu 8.04) w/ openjdk 6
Summary: Fixed the cast from char* to const char* and tried to use const char* as much as possible
Reviewed-by: never, kamg
Contributed-by: xiaobin.lu@sun.com

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

6684395: Port NUMA-aware allocator to linux
Summary: NUMA-aware allocator port to Linux
Reviewed-by: jmasa, apetrusenko

6642862: Code cache allocation fails with large pages after 6588638
Reviewed-by: apetrusenko

Merge

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

6629887: 64-bit windows should not restrict default heap size to 1400m
Reviewed-by: jmasa, sbohne, ikrylov, xlu

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