Summary: Couple of nits in os_bsd.cpp brake compilation of open hotspot on non-apple platforms
Reviewed-by: sla, sspitsyn

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

8023393: Need to suppress info message if -Xcheck:jni used with libjsig.dylab on Mac OSX
Summary: Rewrite 7051189 test in Java, port Linux fix for 7051189 to Mac OSX.
Reviewed-by: coleenp, dholmes, mseledtsov, ccheung

Summary: Use pthread_mach_thread_np() instead of mach_thread_self() to avoid leaking resources
Reviewed-by: dholmes, rbackman

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

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

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

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

Summary: Use SA_ONSTACK flag to ensure signal gets delivered properly.
Reviewed-by: dholmes, coleenp
Contributed-by: gerard.ziemski@oracle.com

Reviewed-by: twisti, dholmes, kvn

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

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

Reviewed-by: kvn, twisti

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

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

Summary: Corrected virtual memory recording and tagging code when large pages are used
Reviewed-by: coleenp, ccheung

8008559: [parfait] Path through non-void function '_ZN2os15thread_cpu_timeEP6Thread' returns an undefined value
Summary: safety checks for non-Apple thread time functions
Reviewed-by: kvn

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

Summary: Save errno before processing signal, then restore it.
Reviewed-by: acorn, sspitsyn

8006423: SA: NullPointerException in sun.jvm.hotspot.debugger.bsd.BsdThread.getContext(BsdThread.java:67)
Summary: Do not rely on mach thread port names to identify threads from SA
Reviewed-by: dholmes, minqi, rbackman

Summary: misc correctness fixes
Reviewed-by: acorn, dholmes, dice, sspitsyn
Contributed-by: dave.dice@oracle.com

Summary: Use HW_MEMSIZE instead of HW_USERMEM to get a 64 bit value of the physical memory on the machine. Also reviewed by vitalyd@gmail.com.
Reviewed-by: sla, dholmes, dlong, mikael

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

Reviewed-by: kvn

Reviewed-by: dholmes, rbackman, coleenp

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

Reviewed-by: coleenp, dholmes

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

Summary: Implementation of decoder for Apple's MacOSX. The implementation is based on the patch provided by Kevin Walls.
Reviewed-by: coleenp, kamg, kevinw

Summary: Updated core path location to reflect macosx default
Reviewed-by: dholmes, kamg

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

Reviewed-by: sla, dholmes

Summary: Backout the fix for 7152031; the real bug to be fixed in jdk repo.
Reviewed-by: michaelm

Summary: Update to use the right path on MacOS X.
Reviewed-by: michaelm, jcoomes, amurillo

Summary: Change OSThread to use mach thread_t
Reviewed-by: phh, dcubed

Summary: Append "." to java.library.path on MacOS X to ease migration from Apple's Java6 to OpenJDK7.
Reviewed-by: phh, jmelvin, coleenp

Summary: Add CriticalPriority == MaxPriority+1 and enable scheduling class as well as thread priority to change on Solaris.
Reviewed-by: dholmes, dcubed

Summary: Fix gamma launcher on Mac OS X and reconcile test_gamma script on Unix platforms
Reviewed-by: dcubed, ohair, jcoomes, dholmes, ksrini
Contributed-by: james.melvin@oracle.com