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6964458: Reimplement class meta-data storage to use native memory

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Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes

Co-authored-by: Stefan Karlsson <stefan.karlsson@oracle.com>
Co-authored-by: Mikael Gerdin <mikael.gerdin@oracle.com>
Co-authored-by: Tom Rodriguez <tom.rodriguez@oracle.com>
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
This commit is contained in:
Jon Masamitsu 2012-09-01 13:25:18 -04:00 • committed by Coleen Phillimore
parent 36eee7c8c8
commit 5c58d27aac
853 changed files with 26124 additions and 82956 deletions
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23
hotspot/src/share/vm/ci/ciObjectFactory.hpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -41,12 +41,12 @@ class ciObjectFactory : public ResourceObj {
private:
static volatile bool _initialized;
static GrowableArray<ciObject*>* _shared_ci_objects;
static GrowableArray<ciMetadata*>* _shared_ci_metadata;
static ciSymbol* _shared_ci_symbols[];
static int _shared_ident_limit;
Arena* _arena;
GrowableArray<ciObject*>* _ci_objects;
GrowableArray<ciMetadata*>* _ci_metadata;
GrowableArray<ciMethod*>* _unloaded_methods;
GrowableArray<ciKlass*>* _unloaded_klasses;
GrowableArray<ciInstance*>* _unloaded_instances;
@ -68,10 +68,13 @@ private:
NonPermObject* _non_perm_bucket[NON_PERM_BUCKETS];
int _non_perm_count;
int find(oop key, GrowableArray<ciObject*>* objects);
bool is_found_at(int index, oop key, GrowableArray<ciObject*>* objects);
void insert(int index, ciObject* obj, GrowableArray<ciObject*>* objects);
int find(Metadata* key, GrowableArray<ciMetadata*>* objects);
bool is_found_at(int index, Metadata* key, GrowableArray<ciMetadata*>* objects);
void insert(int index, ciMetadata* obj, GrowableArray<ciMetadata*>* objects);
ciObject* create_new_object(oop o);
ciMetadata* create_new_object(Metadata* o);
static bool is_equal(NonPermObject* p, oop key) {
return p->object()->get_oop() == key;
}
@ -79,8 +82,7 @@ private:
NonPermObject* &find_non_perm(oop key);
void insert_non_perm(NonPermObject* &where, oop key, ciObject* obj);
void init_ident_of(ciObject* obj);
void init_ident_of(ciSymbol* obj);
void init_ident_of(ciBaseObject* obj);
Arena* arena() { return _arena; }
@ -99,7 +101,7 @@ public:
// Get the ciObject corresponding to some oop.
ciObject* get(oop key);
ciMetadata* get_metadata(Metadata* key);
ciSymbol* get_symbol(Symbol* key);
// Get the ciSymbol corresponding to one of the vmSymbols.
@ -135,6 +137,9 @@ public:
ciReturnAddress* get_return_address(int bci);
// RedefineClasses support
void metadata_do(void f(Metadata*));
void print_contents();
void print();
};