duke@435: /*
trims@2708:  * Copyright (c) 2005, 2011, Oracle and/or its affiliates. All rights reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
duke@435:  *
duke@435:  */
duke@435: 
stefank@2314: #ifndef SHARE_VM_CLASSFILE_RESOLUTIONERRORS_HPP
stefank@2314: #define SHARE_VM_CLASSFILE_RESOLUTIONERRORS_HPP
stefank@2314: 
stefank@2314: #include "oops/constantPoolOop.hpp"
stefank@2314: #include "utilities/hashtable.hpp"
stefank@2314: 
duke@435: class ResolutionErrorEntry;
duke@435: 
duke@435: // ResolutionError objects are used to record errors encountered during
duke@435: // constant pool resolution (JVMS 5.4.3).
duke@435: 
zgu@3900: class ResolutionErrorTable : public Hashtable<constantPoolOop, mtClass> {
duke@435: 
duke@435: public:
duke@435:   ResolutionErrorTable(int table_size);
duke@435: 
coleenp@2497:   ResolutionErrorEntry* new_entry(int hash, constantPoolOop pool, int cp_index, Symbol* error);
coleenp@2497:   void free_entry(ResolutionErrorEntry *entry);
duke@435: 
duke@435:   ResolutionErrorEntry* bucket(int i) {
zgu@3900:     return (ResolutionErrorEntry*)Hashtable<constantPoolOop, mtClass>::bucket(i);
duke@435:   }
duke@435: 
duke@435:   ResolutionErrorEntry** bucket_addr(int i) {
zgu@3900:     return (ResolutionErrorEntry**)Hashtable<constantPoolOop, mtClass>::bucket_addr(i);
duke@435:   }
duke@435: 
duke@435:   void add_entry(int index, ResolutionErrorEntry* new_entry) {
zgu@3900:     Hashtable<constantPoolOop, mtClass>::add_entry(index,
zgu@3900:       (HashtableEntry<constantPoolOop, mtClass>*)new_entry);
duke@435:   }
duke@435: 
duke@435:   void add_entry(int index, unsigned int hash,
coleenp@2497:                  constantPoolHandle pool, int which, Symbol* error);
duke@435: 
duke@435: 
duke@435:   // find error given the constant pool and constant pool index
duke@435:   ResolutionErrorEntry* find_entry(int index, unsigned int hash,
duke@435:                                    constantPoolHandle pool, int cp_index);
duke@435: 
duke@435: 
duke@435:   unsigned int compute_hash(constantPoolHandle pool, int cp_index) {
duke@435:     return (unsigned int) pool->identity_hash() + cp_index;
duke@435:   }
duke@435: 
duke@435:   // purges unloaded entries from the table
duke@435:   void purge_resolution_errors(BoolObjectClosure* is_alive);
duke@435: 
duke@435:   // GC support.
duke@435:   void oops_do(OopClosure* f);
duke@435: };
duke@435: 
duke@435: 
zgu@3900: class ResolutionErrorEntry : public HashtableEntry<constantPoolOop, mtClass> {
duke@435:  private:
duke@435:   int               _cp_index;
coleenp@2497:   Symbol*           _error;
duke@435: 
duke@435:  public:
duke@435:   constantPoolOop    pool() const               { return (constantPoolOop)literal(); }
duke@435:   constantPoolOop*   pool_addr()                { return (constantPoolOop*)literal_addr(); }
duke@435: 
duke@435:   int                cp_index() const           { return _cp_index; }
duke@435:   void               set_cp_index(int cp_index) { _cp_index = cp_index; }
duke@435: 
coleenp@2497:   Symbol*            error() const              { return _error; }
coleenp@2497:   void               set_error(Symbol* e);
duke@435: 
duke@435:   ResolutionErrorEntry* next() const {
zgu@3900:     return (ResolutionErrorEntry*)HashtableEntry<constantPoolOop, mtClass>::next();
duke@435:   }
duke@435: 
duke@435:   ResolutionErrorEntry** next_addr() {
zgu@3900:     return (ResolutionErrorEntry**)HashtableEntry<constantPoolOop, mtClass>::next_addr();
duke@435:   }
duke@435: 
duke@435:   // GC support
duke@435:   void oops_do(OopClosure* blk);
duke@435: };
stefank@2314: 
stefank@2314: #endif // SHARE_VM_CLASSFILE_RESOLUTIONERRORS_HPP