Fri, 16 Aug 2013 13:22:32 +0200
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
1 /*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 * This code is free software; you can redistribute it and/or modify it
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25 #ifndef OS_SOLARIS_VM_OS_SHARE_SOLARIS_HPP
26 #define OS_SOLARIS_VM_OS_SHARE_SOLARIS_HPP
28 // Defines the interfaces to Solaris operating systems that vary across platforms
30 // misc
31 extern "C" {
32 void signalHandler(int, siginfo_t*, void*);
33 }
34 void resolve_lwp_exit_calls(void);
35 void handle_unexpected_exception(Thread* thread, int sig, siginfo_t* info, address pc, address adjusted_pc);
36 #ifndef PRODUCT
37 void continue_with_dump(void);
38 #endif
40 #if defined(__sparc) && defined(COMPILER2)
41 // For Sun Studio compiler implementation is in file
42 // src/os_cpu/solaris_sparc/vm/solaris_sparc.il
43 // For gcc implementation is in file
44 // src/os_cpu/solaris_sparc/vm/os_solaris_sparc.cpp
45 extern "C" void _mark_fpu_nosave() ;
46 #endif
48 #define PROCFILE_LENGTH 128
50 #endif // OS_SOLARIS_VM_OS_SHARE_SOLARIS_HPP