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

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The Nashorn repo is in the process of being migrated to OpenJDK and as such is

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incomplete in several areas.

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- The build system is not fully integrated.  When complete, Nashorn will be

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installed in its proper location in the JRE.

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- Once integrated, the correct version of the JDK will be wrapped around 

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Nashorn.  In the meantime, ensure you use JDK8 b68 or later.

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- The jjs tool has not been implemented in binary form yet.  Use "sh bin/jjs" 

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(or bin/jjs.bat on windows) in the interm.

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- The Dynalink component is not fully integrated into Nashorn as yet, but will

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be when details are finalized.

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- And, finally Nashorn is still in development.  To stay up to date, subscribe

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to nashorn-dev@openjdk.java.net at

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    http://mail.openjdk.java.net/mailman/listinfo/nashorn-dev.

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