Reviewed-by: vkempik, shshahma

Summary: extract processor count from sched_getaffinity mask
Reviewed-by: dholmes, gthornbr

Reviewed-by: stuefe, coleenp, roland

Reviewed-by: bdelsart, ddmitriev, dcubed

Reviewed-by: sla, dsamersoff, gthornbr
Contributed-by: cheleswer.sahu@oracle.com

Reviewed-by: sla, dsamersoff, gthornbr
Contributed-by: cheleswer.sahu@oracle.com

Reviewed-by: dsamersoff, kbarrett, hseigel

Reviewed-by: stuefe, dsamersoff, dcubed

Summary: Fixed by removing all code related to LowMemoryProtection, which removed offending code.
Reviewed-by: dholmes, minqi

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

Summary: refactor close to remove references to closed ports
Reviewed-by: kvn, simonis, sgehwolf, dholmes

Reviewed-by: dcubed, pnauman, ctornqvi, dholmes, mschoene
Contributed-by: gerald.thornbrugh@oracle.com

Reviewed-by: dcubed, pnauman, ctornqvi, dholmes, mschoene
Contributed-by: gerald.thornbrugh@oracle.com

Summary: backout fix 8050808 which caused this regression and as requested.
Reviewed-by: hseigel

Reviewed-by: dcubed, dholmes, pnauman, ctornqvi, mschoene
Contributed-by: gerald.thornbrugh@oracle.com

Summary: Cleaned up CDS to be more configurable, maintainable and extensible
Reviewed-by: dholmes, coleenp, acorn, mchung

Summary: Enhance scalability of native memory tracking
Reviewed-by: coleenp, ctornqvi, gtriantafill

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

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

8043029: Change 8037816 breaks HS build with older GCC versions which don't support diagnostic pragmas
8043164: Format warning in traceStream.hpp
Summary: Backport of main fix + two corrections, enables clang compilation, turns on format attributes, corrects/mutes warnings
Reviewed-by: kvn, coleenp, iveresov, twisti

Summary: Remove the misleading malloc macro and cleanup the code
Reviewed-by: dsamersoff, kvn
Contributed-by: goetz.lindenmaier@sap.com

8130910: hsperfdata file is created in wrong directory and not cleaned up if /tmp/hsperfdata_<username> has wrong permissions
Summary: Add check for fchir() failure and disable shared PerfMemory in that case.
Reviewed-by: dcubed, simonis, gthornbr

Reviewed-by: dholmes, sla

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

Summary: Add length checks where necessary
Reviewed-by: coleenp, mschoene

8033931: Several nightly tests failing with assert(imin < imax) failed: Unexpected page size
Summary: cleaned up warnings in linux specific os code.
Reviewed-by: dcubed, hseigel, coleenp, dsamersoff
Contributed-by: gerald.thornbrugh@oracle.com

Summary: Use spin lock to manage ParkEvent and PlatformEvent free lists.
Reviewed-by: dholmes, fparain, dcubed, acorn

Reviewed-by: twisti, stefank

Reviewed-by: dholmes, kvn, stefank, twisti

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

Reviewed-by: goetz, kvn, dholmes, simonis
Contributed-by: asmundak@google.com

Summary: Extend ELF-decoder to support PPC64 function descriptor tables
Reviewed-by: kvn, zgu

Summary: Fixed Implicit NULL check optimization for AIX, where the page at address '0' is only write-protected.
Reviewed-by: kvn

Reviewed-by: kvn

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

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

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

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