Mercurial > hg > truffle
comparison src/share/vm/runtime/virtualspace.hpp @ 12110:4c84d351cca9
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
author | stefank |
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date | Fri, 16 Aug 2013 13:22:32 +0200 |
parents | b294421fa3c5 |
children | c4c768305a8f |
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12108:badf4244ceae | 12110:4c84d351cca9 |
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51 // Create protection page at the beginning of the space. | 51 // Create protection page at the beginning of the space. |
52 void protect_noaccess_prefix(const size_t size); | 52 void protect_noaccess_prefix(const size_t size); |
53 | 53 |
54 public: | 54 public: |
55 // Constructor | 55 // Constructor |
56 ReservedSpace(); | |
56 ReservedSpace(size_t size); | 57 ReservedSpace(size_t size); |
57 ReservedSpace(size_t size, size_t alignment, bool large, | 58 ReservedSpace(size_t size, size_t alignment, bool large, |
58 char* requested_address = NULL, | 59 char* requested_address = NULL, |
59 const size_t noaccess_prefix = 0); | 60 const size_t noaccess_prefix = 0); |
60 ReservedSpace(size_t size, size_t alignment, bool large, bool executable); | 61 ReservedSpace(size_t size, size_t alignment, bool large, bool executable); |