Mercurial > hg > truffle
diff src/share/vm/classfile/loaderConstraints.hpp @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c89f86385056 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/classfile/loaderConstraints.hpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,133 @@ +/* + * Copyright 2003-2006 Sun Microsystems, Inc. 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 + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +class LoaderConstraintEntry; + +class LoaderConstraintTable : public Hashtable { + friend class VMStructs; +private: + + enum Constants { + _loader_constraint_size = 107, // number of entries in constraint table + _nof_buckets = 1009 // number of buckets in hash table + }; + + LoaderConstraintEntry** find_loader_constraint(symbolHandle name, + Handle loader); + +public: + + LoaderConstraintTable(int nof_buckets); + + LoaderConstraintEntry* new_entry(unsigned int hash, symbolOop name, + klassOop klass, int num_loaders, + int max_loaders); + + LoaderConstraintEntry* bucket(int i) { + return (LoaderConstraintEntry*)Hashtable::bucket(i); + } + + LoaderConstraintEntry** bucket_addr(int i) { + return (LoaderConstraintEntry**)Hashtable::bucket_addr(i); + } + + // GC support + void oops_do(OopClosure* f); + void always_strong_classes_do(OopClosure* blk); + + // Check class loader constraints + bool add_entry(symbolHandle name, klassOop klass1, Handle loader1, + klassOop klass2, Handle loader2); + + void check_signature_loaders(symbolHandle signature, Handle loader1, + Handle loader2, bool is_method, TRAPS); + + klassOop find_constrained_klass(symbolHandle name, Handle loader); + klassOop find_constrained_elem_klass(symbolHandle name, symbolHandle elem_name, + Handle loader, TRAPS); + + + // Class loader constraints + + void ensure_loader_constraint_capacity(LoaderConstraintEntry *p, int nfree); + void extend_loader_constraint(LoaderConstraintEntry* p, Handle loader, + klassOop klass); + void merge_loader_constraints(LoaderConstraintEntry** pp1, + LoaderConstraintEntry** pp2, klassOop klass); + + bool check_or_update(instanceKlassHandle k, Handle loader, + symbolHandle name); + + + void purge_loader_constraints(BoolObjectClosure* is_alive); + + void verify(Dictionary* dictionary); +#ifndef PRODUCT + void print(); +#endif +}; + +class LoaderConstraintEntry : public HashtableEntry { + friend class VMStructs; +private: + symbolOop _name; // class name + int _num_loaders; + int _max_loaders; + oop* _loaders; // initiating loaders + +public: + + klassOop klass() { return (klassOop)literal(); } + klassOop* klass_addr() { return (klassOop*)literal_addr(); } + void set_klass(klassOop k) { set_literal(k); } + + LoaderConstraintEntry* next() { + return (LoaderConstraintEntry*)HashtableEntry::next(); + } + + LoaderConstraintEntry** next_addr() { + return (LoaderConstraintEntry**)HashtableEntry::next_addr(); + } + void set_next(LoaderConstraintEntry* next) { + HashtableEntry::set_next(next); + } + + symbolOop name() { return _name; } + symbolOop* name_addr() { return &_name; } + void set_name(symbolOop name) { _name = name; } + + int num_loaders() { return _num_loaders; } + void set_num_loaders(int i) { _num_loaders = i; } + + int max_loaders() { return _max_loaders; } + void set_max_loaders(int i) { _max_loaders = i; } + + oop* loaders() { return _loaders; } + void set_loaders(oop* loaders) { _loaders = loaders; } + + oop loader(int i) { return _loaders[i]; } + oop* loader_addr(int i) { return &_loaders[i]; } + void set_loader(int i, oop p) { _loaders[i] = p; } + +};