hotspot/src/share/vm/oops/constMethod.hpp
author coleenp
Sat, 01 Sep 2012 13:25:18 -0400
changeset 13728 882756847a04
parent 13282 hotspot/src/share/vm/oops/constMethodOop.hpp@9872915dd78d
child 14385 959bbcc16725
permissions -rw-r--r--
6964458: Reimplement class meta-data storage to use native memory Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
     1
/*
12937
0032fb2caff6 7172967: Eliminate constMethod's _method backpointer to methodOop.
jiangli
parents: 7397
diff changeset
     2
 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
     3
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
489c9b5090e2 Initial load
duke
parents:
diff changeset
     4
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
     5
 * This code is free software; you can redistribute it and/or modify it
489c9b5090e2 Initial load
duke
parents:
diff changeset
     6
 * under the terms of the GNU General Public License version 2 only, as
489c9b5090e2 Initial load
duke
parents:
diff changeset
     7
 * published by the Free Software Foundation.
489c9b5090e2 Initial load
duke
parents:
diff changeset
     8
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
     9
 * This code is distributed in the hope that it will be useful, but WITHOUT
489c9b5090e2 Initial load
duke
parents:
diff changeset
    10
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
489c9b5090e2 Initial load
duke
parents:
diff changeset
    11
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
489c9b5090e2 Initial load
duke
parents:
diff changeset
    12
 * version 2 for more details (a copy is included in the LICENSE file that
489c9b5090e2 Initial load
duke
parents:
diff changeset
    13
 * accompanied this code).
489c9b5090e2 Initial load
duke
parents:
diff changeset
    14
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
    15
 * You should have received a copy of the GNU General Public License version
489c9b5090e2 Initial load
duke
parents:
diff changeset
    16
 * 2 along with this work; if not, write to the Free Software Foundation,
489c9b5090e2 Initial load
duke
parents:
diff changeset
    17
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    18
 *
5547
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 4567
diff changeset
    19
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 4567
diff changeset
    20
 * or visit www.oracle.com if you need additional information or have any
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 4567
diff changeset
    21
 * questions.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    22
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
    23
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
    24
7397
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    25
#ifndef SHARE_VM_OOPS_CONSTMETHODOOP_HPP
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    26
#define SHARE_VM_OOPS_CONSTMETHODOOP_HPP
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    27
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    28
#include "oops/oop.hpp"
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
    29
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
    30
// An ConstMethod* represents portions of a Java method which
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    31
// do not vary.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    32
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
    33
// Memory layout (each line represents a word). Note that most
489c9b5090e2 Initial load
duke
parents:
diff changeset
    34
// applications load thousands of methods, so keeping the size of this
489c9b5090e2 Initial load
duke
parents:
diff changeset
    35
// structure small has a big impact on footprint.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    36
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
    37
// |------------------------------------------------------|
489c9b5090e2 Initial load
duke
parents:
diff changeset
    38
// | header                                               |
489c9b5090e2 Initial load
duke
parents:
diff changeset
    39
// | klass                                                |
489c9b5090e2 Initial load
duke
parents:
diff changeset
    40
// |------------------------------------------------------|
489c9b5090e2 Initial load
duke
parents:
diff changeset
    41
// | fingerprint 1                                        |
489c9b5090e2 Initial load
duke
parents:
diff changeset
    42
// | fingerprint 2                                        |
12937
0032fb2caff6 7172967: Eliminate constMethod's _method backpointer to methodOop.
jiangli
parents: 7397
diff changeset
    43
// | constants                      (oop)                 |
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    44
// | stackmap_data                  (oop)                 |
489c9b5090e2 Initial load
duke
parents:
diff changeset
    45
// | constMethod_size                                     |
489c9b5090e2 Initial load
duke
parents:
diff changeset
    46
// | interp_kind  | flags    | code_size                  |
489c9b5090e2 Initial load
duke
parents:
diff changeset
    47
// | name index              | signature index            |
489c9b5090e2 Initial load
duke
parents:
diff changeset
    48
// | method_idnum            | generic_signature_index    |
489c9b5090e2 Initial load
duke
parents:
diff changeset
    49
// |------------------------------------------------------|
489c9b5090e2 Initial load
duke
parents:
diff changeset
    50
// |                                                      |
489c9b5090e2 Initial load
duke
parents:
diff changeset
    51
// | byte codes                                           |
489c9b5090e2 Initial load
duke
parents:
diff changeset
    52
// |                                                      |
489c9b5090e2 Initial load
duke
parents:
diff changeset
    53
// |------------------------------------------------------|
489c9b5090e2 Initial load
duke
parents:
diff changeset
    54
// | compressed linenumber table                          |
489c9b5090e2 Initial load
duke
parents:
diff changeset
    55
// |  (see class CompressedLineNumberReadStream)          |
489c9b5090e2 Initial load
duke
parents:
diff changeset
    56
// |  (note that length is unknown until decompressed)    |
489c9b5090e2 Initial load
duke
parents:
diff changeset
    57
// |  (access flags bit tells whether table is present)   |
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
    58
// |  (indexed from start of ConstMethod*)              |
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    59
// |  (elements not necessarily sorted!)                  |
489c9b5090e2 Initial load
duke
parents:
diff changeset
    60
// |------------------------------------------------------|
489c9b5090e2 Initial load
duke
parents:
diff changeset
    61
// | localvariable table elements + length (length last)  |
489c9b5090e2 Initial load
duke
parents:
diff changeset
    62
// |  (length is u2, elements are 6-tuples of u2)         |
489c9b5090e2 Initial load
duke
parents:
diff changeset
    63
// |  (see class LocalVariableTableElement)               |
489c9b5090e2 Initial load
duke
parents:
diff changeset
    64
// |  (access flags bit tells whether table is present)   |
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
    65
// |  (indexed from end of ConstMethod*)                |
13282
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
    66
// |------------------------------------------------------|
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
    67
// | exception table + length (length last)               |
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
    68
// |  (length is u2, elements are 4-tuples of u2)         |
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
    69
// |  (see class ExceptionTableElement)                   |
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
    70
// |  (access flags bit tells whether table is present)   |
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
    71
// |  (indexed from end of ConstMethod*)                |
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    72
// |------------------------------------------------------|
489c9b5090e2 Initial load
duke
parents:
diff changeset
    73
// | checked exceptions elements + length (length last)   |
489c9b5090e2 Initial load
duke
parents:
diff changeset
    74
// |  (length is u2, elements are u2)                     |
489c9b5090e2 Initial load
duke
parents:
diff changeset
    75
// |  (see class CheckedExceptionElement)                 |
489c9b5090e2 Initial load
duke
parents:
diff changeset
    76
// |  (access flags bit tells whether table is present)   |
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
    77
// |  (indexed from end of ConstMethod*)                |
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    78
// |------------------------------------------------------|
489c9b5090e2 Initial load
duke
parents:
diff changeset
    79
489c9b5090e2 Initial load
duke
parents:
diff changeset
    80
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
    81
// Utitily class decribing elements in checked exceptions table inlined in Method*.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    82
class CheckedExceptionElement VALUE_OBJ_CLASS_SPEC {
489c9b5090e2 Initial load
duke
parents:
diff changeset
    83
 public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
    84
  u2 class_cp_index;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    85
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
    86
489c9b5090e2 Initial load
duke
parents:
diff changeset
    87
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
    88
// Utitily class decribing elements in local variable table inlined in Method*.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    89
class LocalVariableTableElement VALUE_OBJ_CLASS_SPEC {
489c9b5090e2 Initial load
duke
parents:
diff changeset
    90
 public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
    91
  u2 start_bci;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    92
  u2 length;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    93
  u2 name_cp_index;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    94
  u2 descriptor_cp_index;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    95
  u2 signature_cp_index;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    96
  u2 slot;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    97
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
    98
13282
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
    99
// Utitily class describing elements in exception table
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
   100
class ExceptionTableElement VALUE_OBJ_CLASS_SPEC {
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
   101
 public:
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
   102
  u2 start_pc;
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
   103
  u2 end_pc;
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
   104
  u2 handler_pc;
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
   105
  u2 catch_type_index;
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
   106
};
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
   107
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   108
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   109
class ConstMethod : public MetaspaceObj {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   110
  friend class VMStructs;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   111
private:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   112
  enum {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   113
    _has_linenumber_table = 1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   114
    _has_checked_exceptions = 2,
13282
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
   115
    _has_localvariable_table = 4,
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
   116
    _has_exception_table = 8
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   117
  };
489c9b5090e2 Initial load
duke
parents:
diff changeset
   118
489c9b5090e2 Initial load
duke
parents:
diff changeset
   119
  // Bit vector of signature
489c9b5090e2 Initial load
duke
parents:
diff changeset
   120
  // Callers interpret 0=not initialized yet and
489c9b5090e2 Initial load
duke
parents:
diff changeset
   121
  // -1=too many args to fix, must parse the slow way.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   122
  // The real initial value is special to account for nonatomicity of 64 bit
489c9b5090e2 Initial load
duke
parents:
diff changeset
   123
  // loads and stores.  This value may updated and read without a lock by
489c9b5090e2 Initial load
duke
parents:
diff changeset
   124
  // multiple threads, so is volatile.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   125
  volatile uint64_t _fingerprint;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   126
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   127
  ConstantPool*     _constants;                  // Constant pool
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   128
489c9b5090e2 Initial load
duke
parents:
diff changeset
   129
  // Raw stackmap data for the method
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   130
  Array<u1>*        _stackmap_data;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   131
489c9b5090e2 Initial load
duke
parents:
diff changeset
   132
  int               _constMethod_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   133
  jbyte             _interpreter_kind;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   134
  jbyte             _flags;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   135
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   136
  // Size of Java bytecodes allocated immediately after Method*.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   137
  u2                _code_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   138
  u2                _name_index;                 // Method name (index in constant pool)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   139
  u2                _signature_index;            // Method signature (index in constant pool)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   140
  u2                _method_idnum;               // unique identification number for the method within the class
489c9b5090e2 Initial load
duke
parents:
diff changeset
   141
                                                 // initially corresponds to the index into the methods array.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   142
                                                 // but this may change with redefinition
489c9b5090e2 Initial load
duke
parents:
diff changeset
   143
  u2                _generic_signature_index;    // Generic signature (index in constant pool, 0 if absent)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   144
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   145
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   146
  // Constructor
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   147
  ConstMethod(int byte_code_size,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   148
                     int compressed_line_number_size,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   149
                     int localvariable_table_length,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   150
                     int exception_table_length,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   151
                     int checked_exceptions_length,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   152
                     int size);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   153
public:
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   154
  static ConstMethod* allocate(ClassLoaderData* loader_data,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   155
                                 int byte_code_size,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   156
                                 int compressed_line_number_size,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   157
                                 int localvariable_table_length,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   158
                                 int exception_table_length,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   159
                                 int checked_exceptions_length,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   160
                                 TRAPS);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   161
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   162
  bool is_constMethod() const { return true; }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   163
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   164
  // Inlined tables
489c9b5090e2 Initial load
duke
parents:
diff changeset
   165
  void set_inlined_tables_length(int checked_exceptions_len,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   166
                                 int compressed_line_number_size,
13282
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
   167
                                 int localvariable_table_len,
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
   168
                                 int exception_table_len);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   169
489c9b5090e2 Initial load
duke
parents:
diff changeset
   170
  bool has_linenumber_table() const
489c9b5090e2 Initial load
duke
parents:
diff changeset
   171
    { return (_flags & _has_linenumber_table) != 0; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   172
489c9b5090e2 Initial load
duke
parents:
diff changeset
   173
  bool has_checked_exceptions() const
489c9b5090e2 Initial load
duke
parents:
diff changeset
   174
    { return (_flags & _has_checked_exceptions) != 0; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   175
489c9b5090e2 Initial load
duke
parents:
diff changeset
   176
  bool has_localvariable_table() const
489c9b5090e2 Initial load
duke
parents:
diff changeset
   177
    { return (_flags & _has_localvariable_table) != 0; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   178
13282
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
   179
  bool has_exception_handler() const
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
   180
    { return (_flags & _has_exception_table) != 0; }
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
   181
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   182
  void set_interpreter_kind(int kind)      { _interpreter_kind = kind; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   183
  int  interpreter_kind(void) const        { return _interpreter_kind; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   184
12937
0032fb2caff6 7172967: Eliminate constMethod's _method backpointer to methodOop.
jiangli
parents: 7397
diff changeset
   185
  // constant pool
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   186
  ConstantPool* constants() const        { return _constants; }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   187
  void set_constants(ConstantPool* c)    { _constants = c; }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   188
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   189
  Method* method() const;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   190
489c9b5090e2 Initial load
duke
parents:
diff changeset
   191
  // stackmap table data
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   192
  Array<u1>* stackmap_data() const { return _stackmap_data; }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   193
  void set_stackmap_data(Array<u1>* sd) { _stackmap_data = sd; }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   194
  bool has_stackmap_table() const { return _stackmap_data != NULL; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   195
489c9b5090e2 Initial load
duke
parents:
diff changeset
   196
  void init_fingerprint() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   197
    const uint64_t initval = CONST64(0x8000000000000000);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   198
    _fingerprint = initval;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   199
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   200
489c9b5090e2 Initial load
duke
parents:
diff changeset
   201
  uint64_t fingerprint() const                   {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   202
    // Since reads aren't atomic for 64 bits, if any of the high or low order
489c9b5090e2 Initial load
duke
parents:
diff changeset
   203
    // word is the initial value, return 0.  See init_fingerprint for initval.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   204
    uint high_fp = (uint)(_fingerprint >> 32);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   205
    if ((int) _fingerprint == 0 || high_fp == 0x80000000) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   206
      return 0L;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   207
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   208
      return _fingerprint;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   209
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   210
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   211
489c9b5090e2 Initial load
duke
parents:
diff changeset
   212
  uint64_t set_fingerprint(uint64_t new_fingerprint) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   213
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   214
    // Assert only valid if complete/valid 64 bit _fingerprint value is read.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   215
    uint64_t oldfp = fingerprint();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   216
#endif // ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   217
    _fingerprint = new_fingerprint;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   218
    assert(oldfp == 0L || new_fingerprint == oldfp,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   219
           "fingerprint cannot change");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   220
    assert(((new_fingerprint >> 32) != 0x80000000) && (int)new_fingerprint !=0,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   221
           "fingerprint should call init to set initial value");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   222
    return new_fingerprint;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   223
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   224
489c9b5090e2 Initial load
duke
parents:
diff changeset
   225
  // name
489c9b5090e2 Initial load
duke
parents:
diff changeset
   226
  int name_index() const                         { return _name_index; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   227
  void set_name_index(int index)                 { _name_index = index; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   228
489c9b5090e2 Initial load
duke
parents:
diff changeset
   229
  // signature
489c9b5090e2 Initial load
duke
parents:
diff changeset
   230
  int signature_index() const                    { return _signature_index; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   231
  void set_signature_index(int index)            { _signature_index = index; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   232
489c9b5090e2 Initial load
duke
parents:
diff changeset
   233
  // generics support
489c9b5090e2 Initial load
duke
parents:
diff changeset
   234
  int generic_signature_index() const            { return _generic_signature_index; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   235
  void set_generic_signature_index(int index)    { _generic_signature_index = index; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   236
489c9b5090e2 Initial load
duke
parents:
diff changeset
   237
  // Sizing
489c9b5090e2 Initial load
duke
parents:
diff changeset
   238
  static int header_size() {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   239
    return sizeof(ConstMethod)/HeapWordSize;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   240
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   241
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   242
  // Size needed
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   243
  static int size(int code_size, int compressed_line_number_size,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   244
                         int local_variable_table_length,
13282
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
   245
                         int exception_table_length,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   246
                         int checked_exceptions_length);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   247
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   248
  int size() const                    { return _constMethod_size;}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   249
  void set_constMethod_size(int size)     { _constMethod_size = size; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   250
489c9b5090e2 Initial load
duke
parents:
diff changeset
   251
  // code size
489c9b5090e2 Initial load
duke
parents:
diff changeset
   252
  int code_size() const                          { return _code_size; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   253
  void set_code_size(int size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   254
    assert(max_method_code_size < (1 << 16),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   255
           "u2 is too small to hold method code size in general");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   256
    assert(0 <= size && size <= max_method_code_size, "invalid code size");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   257
    _code_size = size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   258
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   259
489c9b5090e2 Initial load
duke
parents:
diff changeset
   260
  // linenumber table - note that length is unknown until decompression,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   261
  // see class CompressedLineNumberReadStream.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   262
  u_char* compressed_linenumber_table() const;         // not preserved by gc
489c9b5090e2 Initial load
duke
parents:
diff changeset
   263
  u2* checked_exceptions_length_addr() const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   264
  u2* localvariable_table_length_addr() const;
13282
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
   265
  u2* exception_table_length_addr() const;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   266
489c9b5090e2 Initial load
duke
parents:
diff changeset
   267
  // checked exceptions
489c9b5090e2 Initial load
duke
parents:
diff changeset
   268
  int checked_exceptions_length() const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   269
  CheckedExceptionElement* checked_exceptions_start() const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   270
489c9b5090e2 Initial load
duke
parents:
diff changeset
   271
  // localvariable table
489c9b5090e2 Initial load
duke
parents:
diff changeset
   272
  int localvariable_table_length() const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   273
  LocalVariableTableElement* localvariable_table_start() const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   274
13282
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
   275
  // exception table
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
   276
  int exception_table_length() const;
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
   277
  ExceptionTableElement* exception_table_start() const;
9872915dd78d 7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents: 12937
diff changeset
   278
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   279
  // byte codes
4567
7fc02fbe5c7a 6893268: additional dynamic language related optimizations in C2
twisti
parents: 2105
diff changeset
   280
  void    set_code(address code) {
7fc02fbe5c7a 6893268: additional dynamic language related optimizations in C2
twisti
parents: 2105
diff changeset
   281
    if (code_size() > 0) {
7fc02fbe5c7a 6893268: additional dynamic language related optimizations in C2
twisti
parents: 2105
diff changeset
   282
      memcpy(code_base(), code, code_size());
7fc02fbe5c7a 6893268: additional dynamic language related optimizations in C2
twisti
parents: 2105
diff changeset
   283
    }
7fc02fbe5c7a 6893268: additional dynamic language related optimizations in C2
twisti
parents: 2105
diff changeset
   284
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   285
  address code_base() const            { return (address) (this+1); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   286
  address code_end() const             { return code_base() + code_size(); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   287
  bool    contains(address bcp) const  { return code_base() <= bcp
489c9b5090e2 Initial load
duke
parents:
diff changeset
   288
                                                     && bcp < code_end(); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   289
  // Offset to bytecodes
489c9b5090e2 Initial load
duke
parents:
diff changeset
   290
  static ByteSize codes_offset()
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   291
                            { return in_ByteSize(sizeof(ConstMethod)); }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   292
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   293
  static ByteSize constants_offset()
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   294
                            { return byte_offset_of(ConstMethod, _constants); }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   295
489c9b5090e2 Initial load
duke
parents:
diff changeset
   296
  // Unique id for the method
489c9b5090e2 Initial load
duke
parents:
diff changeset
   297
  static const u2 MAX_IDNUM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   298
  static const u2 UNSET_IDNUM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   299
  u2 method_idnum() const                        { return _method_idnum; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   300
  void set_method_idnum(u2 idnum)                { _method_idnum = idnum; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   301
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   302
  // Deallocation for RedefineClasses
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   303
  void deallocate_contents(ClassLoaderData* loader_data);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   304
  bool is_klass() const { return false; }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   305
  DEBUG_ONLY(bool on_stack() { return false; })
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   306
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   307
private:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   308
  // Since the size of the compressed line number table is unknown, the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   309
  // offsets of the other variable sized sections are computed backwards
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   310
  // from the end of the ConstMethod*.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   311
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   312
  // First byte after ConstMethod*
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   313
  address constMethod_end() const
489c9b5090e2 Initial load
duke
parents:
diff changeset
   314
                          { return (address)((oop*)this + _constMethod_size); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   315
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   316
  // Last short in ConstMethod*
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   317
  u2* last_u2_element() const
489c9b5090e2 Initial load
duke
parents:
diff changeset
   318
                                         { return (u2*)constMethod_end() - 1; }
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   319
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   320
 public:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   321
  // Printing
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   322
  void print_on      (outputStream* st) const;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   323
  void print_value_on(outputStream* st) const;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   324
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   325
  const char* internal_name() const { return "{constMethod}"; }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   326
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   327
  // Verify
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13282
diff changeset
   328
  void verify_on(outputStream* st);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   329
};
7397
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
   330
5b173b4ca846 6989984: Use standard include model for Hospot
stefank
parents: 5547
diff changeset
   331
#endif // SHARE_VM_OOPS_CONSTMETHODOOP_HPP