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/*
* Copyright (c) 2005, 2010, 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
* 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#ifndef SHARE_VM_CLASSFILE_RESOLUTIONERRORS_HPP
#define SHARE_VM_CLASSFILE_RESOLUTIONERRORS_HPP
#include "oops/constantPoolOop.hpp"
#include "utilities/hashtable.hpp"
class ResolutionErrorEntry;
// ResolutionError objects are used to record errors encountered during
// constant pool resolution (JVMS 5.4.3).
class ResolutionErrorTable : public Hashtable {
public:
ResolutionErrorTable(int table_size);
ResolutionErrorEntry* new_entry(int hash, constantPoolOop pool, int cp_index, symbolOop error);
ResolutionErrorEntry* bucket(int i) {
return (ResolutionErrorEntry*)Hashtable::bucket(i);
}
ResolutionErrorEntry** bucket_addr(int i) {
return (ResolutionErrorEntry**)Hashtable::bucket_addr(i);
}
void add_entry(int index, ResolutionErrorEntry* new_entry) {
Hashtable::add_entry(index, (HashtableEntry*)new_entry);
}
void add_entry(int index, unsigned int hash,
constantPoolHandle pool, int which, symbolHandle error);
// find error given the constant pool and constant pool index
ResolutionErrorEntry* find_entry(int index, unsigned int hash,
constantPoolHandle pool, int cp_index);
unsigned int compute_hash(constantPoolHandle pool, int cp_index) {
return (unsigned int) pool->identity_hash() + cp_index;
}
// purges unloaded entries from the table
void purge_resolution_errors(BoolObjectClosure* is_alive);
// this table keeps symbolOops alive
void always_strong_classes_do(OopClosure* blk);
// GC support.
void oops_do(OopClosure* f);
};
class ResolutionErrorEntry : public HashtableEntry {
private:
int _cp_index;
symbolOop _error;
public:
constantPoolOop pool() const { return (constantPoolOop)literal(); }
constantPoolOop* pool_addr() { return (constantPoolOop*)literal_addr(); }
int cp_index() const { return _cp_index; }
void set_cp_index(int cp_index) { _cp_index = cp_index; }
symbolOop error() const { return _error; }
void set_error(symbolOop e) { _error = e; }
symbolOop* error_addr() { return &_error; }
ResolutionErrorEntry* next() const {
return (ResolutionErrorEntry*)HashtableEntry::next();
}
ResolutionErrorEntry** next_addr() {
return (ResolutionErrorEntry**)HashtableEntry::next_addr();
}
// GC support
void oops_do(OopClosure* blk);
};
#endif // SHARE_VM_CLASSFILE_RESOLUTIONERRORS_HPP
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