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8141132: JEP 254: Compact Strings

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Adopt a more space-efficient internal representation for strings.

Co-authored-by: Brent Christian <brent.christian@oracle.com>
Co-authored-by: Vivek Deshpande <vivek.r.deshpande@intel.com>
Co-authored-by: Charlie Hunt <charlie.hunt@oracle.com>
Co-authored-by: Vladimir Kozlov <vladimir.kozlov@oracle.com>
Co-authored-by: Roger Riggs <roger.riggs@oracle.com>
Co-authored-by: Xueming Shen <xueming.shen@oracle.com>
Co-authored-by: Aleksey Shipilev <aleksey.shipilev@oracle.com>
Co-authored-by: Sandhya Viswanathan <sandhya.viswanathan@intel.com>
Reviewed-by: alanb, bdelsart, coleenp, iklam, jiangli, jrose, kevinw, naoto, pliden, roland, smarks, twisti
This commit is contained in:
Tobias Hartmann 2015-11-03 09:41:03 +01:00
parent 4e24e2cc6c
commit 7af927f9c1
74 changed files with 4838 additions and 1683 deletions
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hotspot/src/share/vm/memory/filemap.hpp
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@ -95,6 +95,7 @@ public:
size_t _alignment; // how shared archive should be aligned
int _obj_alignment; // value of ObjectAlignmentInBytes
int _narrow_oop_shift; // compressed oop encoding shift
bool _compact_strings; // value of CompactStrings
uintx _max_heap_size; // java max heap size during dumping
Universe::NARROW_OOP_MODE _narrow_oop_mode; // compressed oop encoding mode
int _narrow_klass_shift; // save narrow klass base and shift