jdk8-mips64-public/hotspot: src/share/vm/classfile/resolutionErrors.hpp@3582bf76420e

6990754: Use native memory and reference counting to implement SymbolTable
Summary: move symbols from permgen into C heap and reference count them
Reviewed-by: never, acorn, jmasa, stefank

     1 /*

     2  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #ifndef SHARE_VM_CLASSFILE_RESOLUTIONERRORS_HPP

    26 #define SHARE_VM_CLASSFILE_RESOLUTIONERRORS_HPP

    28 #include "oops/constantPoolOop.hpp"

    29 #include "utilities/hashtable.hpp"

    31 class ResolutionErrorEntry;

    33 // ResolutionError objects are used to record errors encountered during

    34 // constant pool resolution (JVMS 5.4.3).

    36 class ResolutionErrorTable : public Hashtable<constantPoolOop> {

    38 public:

    39   ResolutionErrorTable(int table_size);

    41   ResolutionErrorEntry* new_entry(int hash, constantPoolOop pool, int cp_index, Symbol* error);

    42   void free_entry(ResolutionErrorEntry *entry);

    44   ResolutionErrorEntry* bucket(int i) {

    45     return (ResolutionErrorEntry*)Hashtable<constantPoolOop>::bucket(i);

    46   }

    48   ResolutionErrorEntry** bucket_addr(int i) {

    49     return (ResolutionErrorEntry**)Hashtable<constantPoolOop>::bucket_addr(i);

    50   }

    52   void add_entry(int index, ResolutionErrorEntry* new_entry) {

    53     Hashtable<constantPoolOop>::add_entry(index, (HashtableEntry<constantPoolOop>*)new_entry);

    54   }

    56   void add_entry(int index, unsigned int hash,

    57                  constantPoolHandle pool, int which, Symbol* error);

    60   // find error given the constant pool and constant pool index

    61   ResolutionErrorEntry* find_entry(int index, unsigned int hash,

    62                                    constantPoolHandle pool, int cp_index);

    65   unsigned int compute_hash(constantPoolHandle pool, int cp_index) {

    66     return (unsigned int) pool->identity_hash() + cp_index;

    67   }

    69   // purges unloaded entries from the table

    70   void purge_resolution_errors(BoolObjectClosure* is_alive);

    72   // GC support.

    73   void oops_do(OopClosure* f);

    74 };

    77 class ResolutionErrorEntry : public HashtableEntry<constantPoolOop> {

    78  private:

    79   int               _cp_index;

    80   Symbol*           _error;

    82  public:

    83   constantPoolOop    pool() const               { return (constantPoolOop)literal(); }

    84   constantPoolOop*   pool_addr()                { return (constantPoolOop*)literal_addr(); }

    86   int                cp_index() const           { return _cp_index; }

    87   void               set_cp_index(int cp_index) { _cp_index = cp_index; }

    89   Symbol*            error() const              { return _error; }

    90   void               set_error(Symbol* e);

    92   ResolutionErrorEntry* next() const {

    93     return (ResolutionErrorEntry*)HashtableEntry<constantPoolOop>::next();

    94   }

    96   ResolutionErrorEntry** next_addr() {

    97     return (ResolutionErrorEntry**)HashtableEntry<constantPoolOop>::next_addr();

    98   }

   100   // GC support

   101   void oops_do(OopClosure* blk);

   102 };

   104 #endif // SHARE_VM_CLASSFILE_RESOLUTIONERRORS_HPP

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/classfile/resolutionErrors.hpp@3582bf76420e

src/share/vm/classfile/resolutionErrors.hpp