Mercurial > hg > truffle
diff src/share/vm/classfile/resolutionErrors.hpp @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/classfile/resolutionErrors.hpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,99 @@ +/* + * Copyright 2005 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 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); +};