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6990754: Use native memory and reference counting to implement SymbolTable

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Move symbols from permgen into C heap and reference count them

Reviewed-by: never, acorn, jmasa, stefank
This commit is contained in:
Coleen Phillimore 2011-01-27 16:11:27 -08:00
parent 950858350d
commit 7b4f8073f0
223 changed files with 3783 additions and 3641 deletions
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18
hotspot/src/share/vm/oops/klass.hpp
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@ -212,6 +212,10 @@ class Klass : public Klass_vtbl {
// secondary supers, else is &_primary_supers[depth()].
juint _super_check_offset;
// Class name. Instance classes: java/lang/String, etc. Array classes: [I,
// [Ljava/lang/String;, etc. Set to zero for all other kinds of classes.
Symbol* _name;
public:
oop* oop_block_beg() const { return adr_secondary_super_cache(); }
oop* oop_block_end() const { return adr_next_sibling() + 1; }
@ -235,9 +239,6 @@ class Klass : public Klass_vtbl {
oop _java_mirror;
// Superclass
klassOop _super;
// Class name. Instance classes: java/lang/String, etc. Array classes: [I,
// [Ljava/lang/String;, etc. Set to zero for all other kinds of classes.
symbolOop _name;
// First subclass (NULL if none); _subklass->next_sibling() is next one
klassOop _subklass;
// Sibling link (or NULL); links all subklasses of a klass
@ -361,7 +362,6 @@ class Klass : public Klass_vtbl {
oop* adr_secondary_super_cache() const { return (oop*)&_secondary_super_cache; }
oop* adr_secondary_supers()const { return (oop*)&_secondary_supers; }
oop* adr_java_mirror() const { return (oop*)&_java_mirror; }
oop* adr_name() const { return (oop*)&_name; }
oop* adr_subklass() const { return (oop*)&_subklass; }
oop* adr_next_sibling() const { return (oop*)&_next_sibling; }
@ -511,9 +511,9 @@ class Klass : public Klass_vtbl {
virtual void initialize(TRAPS);
// lookup operation for MethodLookupCache
friend class MethodLookupCache;
virtual methodOop uncached_lookup_method(symbolOop name, symbolOop signature) const;
virtual methodOop uncached_lookup_method(Symbol* name, Symbol* signature) const;
public:
methodOop lookup_method(symbolOop name, symbolOop signature) const {
methodOop lookup_method(Symbol* name, Symbol* signature) const {
return uncached_lookup_method(name, signature);
}
@ -537,6 +537,7 @@ class Klass : public Klass_vtbl {
public:
virtual void remove_unshareable_info();
virtual void shared_symbols_iterate(SymbolClosure* closure);
protected:
// computes the subtype relationship
@ -579,7 +580,6 @@ class Klass : public Klass_vtbl {
virtual bool oop_is_instanceRef() const { return false; }
virtual bool oop_is_array() const { return false; }
virtual bool oop_is_objArray_slow() const { return false; }
virtual bool oop_is_symbol() const { return false; }
virtual bool oop_is_klass() const { return false; }
virtual bool oop_is_thread() const { return false; }
virtual bool oop_is_method() const { return false; }
@ -781,8 +781,8 @@ class Klass : public Klass_vtbl {
Klass *up_cast_abstract();
// klass name
symbolOop name() const { return _name; }
void set_name(symbolOop n) { oop_store_without_check((oop*) &_name, (oop) n); }
Symbol* name() const { return _name; }
void set_name(Symbol* n);
friend class klassKlass;