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8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes

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Added Atomic::inc(short*) to support this change.

Reviewed-by: coleenp, dcubed, dholmes, minqi
This commit is contained in:
Ioi Lam 2013-06-23 22:08:28 -07:00
parent 1c281a9fb3
commit 196c8abc3d
5 changed files with 69 additions and 7 deletions
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2
hotspot/src/share/vm/runtime/vmStructs.cpp
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@ -379,7 +379,7 @@ typedef BinaryTreeDictionary<Metablock, FreeList> MetablockTreeDictionary;
nonstatic_field(ConstMethod, _size_of_parameters, u2) \
nonstatic_field(ObjArrayKlass, _element_klass, Klass*) \
nonstatic_field(ObjArrayKlass, _bottom_klass, Klass*) \
volatile_nonstatic_field(Symbol, _refcount, int) \
volatile_nonstatic_field(Symbol, _refcount, short) \
nonstatic_field(Symbol, _identity_hash, int) \
nonstatic_field(Symbol, _length, unsigned short) \
unchecked_nonstatic_field(Symbol, _body, sizeof(jbyte)) /* NOTE: no type */ \