hotspot/src/share/vm/oops/instanceKlass.hpp
author xlu
Wed, 16 Dec 2009 14:27:50 -0800
changeset 4496 c5a0b15a8e7d
parent 4094 1f424b2b2171
child 4584 e2a449e8cc6f
permissions -rw-r--r--
6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build Reviewed-by: dholmes, acorn, jrose
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
     1
/*
2332
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 1550
diff changeset
     2
 * Copyright 1997-2009 Sun Microsystems, Inc.  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
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
    19
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
489c9b5090e2 Initial load
duke
parents:
diff changeset
    20
 * CA 95054 USA or visit www.sun.com if you need additional information or
489c9b5090e2 Initial load
duke
parents:
diff changeset
    21
 * have any questions.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    22
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
    23
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
    24
489c9b5090e2 Initial load
duke
parents:
diff changeset
    25
// An instanceKlass is the VM level representation of a Java class.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    26
// It contains all information needed for at class at execution runtime.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    27
489c9b5090e2 Initial load
duke
parents:
diff changeset
    28
//  instanceKlass layout:
489c9b5090e2 Initial load
duke
parents:
diff changeset
    29
//    [header                     ] klassOop
489c9b5090e2 Initial load
duke
parents:
diff changeset
    30
//    [klass pointer              ] klassOop
489c9b5090e2 Initial load
duke
parents:
diff changeset
    31
//    [C++ vtbl pointer           ] Klass
489c9b5090e2 Initial load
duke
parents:
diff changeset
    32
//    [subtype cache              ] Klass
489c9b5090e2 Initial load
duke
parents:
diff changeset
    33
//    [instance size              ] Klass
489c9b5090e2 Initial load
duke
parents:
diff changeset
    34
//    [java mirror                ] Klass
489c9b5090e2 Initial load
duke
parents:
diff changeset
    35
//    [super                      ] Klass
489c9b5090e2 Initial load
duke
parents:
diff changeset
    36
//    [access_flags               ] Klass
489c9b5090e2 Initial load
duke
parents:
diff changeset
    37
//    [name                       ] Klass
489c9b5090e2 Initial load
duke
parents:
diff changeset
    38
//    [first subklass             ] Klass
489c9b5090e2 Initial load
duke
parents:
diff changeset
    39
//    [next sibling               ] Klass
489c9b5090e2 Initial load
duke
parents:
diff changeset
    40
//    [array klasses              ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
    41
//    [methods                    ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
    42
//    [local interfaces           ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
    43
//    [transitive interfaces      ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
    44
//    [number of implementors     ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
    45
//    [implementors               ] klassOop[2]
489c9b5090e2 Initial load
duke
parents:
diff changeset
    46
//    [fields                     ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
    47
//    [constants                  ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
    48
//    [class loader               ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
    49
//    [protection domain          ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
    50
//    [signers                    ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
    51
//    [source file name           ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
    52
//    [inner classes              ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
    53
//    [static field size          ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
    54
//    [nonstatic field size       ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
    55
//    [static oop fields size     ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
    56
//    [nonstatic oop maps size    ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
    57
//    [has finalize method        ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
    58
//    [deoptimization mark bit    ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
    59
//    [initialization state       ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
    60
//    [initializing thread        ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
    61
//    [Java vtable length         ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
    62
//    [oop map cache (stack maps) ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
    63
//    [EMBEDDED Java vtable             ] size in words = vtable_len
489c9b5090e2 Initial load
duke
parents:
diff changeset
    64
//    [EMBEDDED static oop fields       ] size in words = static_oop_fields_size
489c9b5090e2 Initial load
duke
parents:
diff changeset
    65
//    [         static non-oop fields   ] size in words = static_field_size - static_oop_fields_size
489c9b5090e2 Initial load
duke
parents:
diff changeset
    66
//    [EMBEDDED nonstatic oop-map blocks] size in words = nonstatic_oop_map_size
489c9b5090e2 Initial load
duke
parents:
diff changeset
    67
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
    68
//    The embedded nonstatic oop-map blocks are short pairs (offset, length) indicating
489c9b5090e2 Initial load
duke
parents:
diff changeset
    69
//    where oops are located in instances of this klass.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    70
489c9b5090e2 Initial load
duke
parents:
diff changeset
    71
489c9b5090e2 Initial load
duke
parents:
diff changeset
    72
// forward declaration for class -- see below for definition
489c9b5090e2 Initial load
duke
parents:
diff changeset
    73
class SuperTypeClosure;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    74
class JNIid;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    75
class jniIdMapBase;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    76
class BreakpointInfo;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    77
class fieldDescriptor;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    78
class DepChange;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    79
class nmethodBucket;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    80
class PreviousVersionNode;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    81
class JvmtiCachedClassFieldMap;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    82
489c9b5090e2 Initial load
duke
parents:
diff changeset
    83
// This is used in iterators below.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    84
class FieldClosure: public StackObj {
489c9b5090e2 Initial load
duke
parents:
diff changeset
    85
public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
    86
  virtual void do_field(fieldDescriptor* fd) = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    87
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
    88
489c9b5090e2 Initial load
duke
parents:
diff changeset
    89
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
    90
// Print fields.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    91
// If "obj" argument to constructor is NULL, prints static fields, otherwise prints non-static fields.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    92
class FieldPrinter: public FieldClosure {
489c9b5090e2 Initial load
duke
parents:
diff changeset
    93
   oop _obj;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    94
   outputStream* _st;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    95
 public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
    96
   FieldPrinter(outputStream* st, oop obj = NULL) : _obj(obj), _st(st) {}
489c9b5090e2 Initial load
duke
parents:
diff changeset
    97
   void do_field(fieldDescriptor* fd);
489c9b5090e2 Initial load
duke
parents:
diff changeset
    98
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
    99
#endif  // !PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   100
3693
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   101
// ValueObjs embedded in klass. Describes where oops are located in instances of
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   102
// this klass.
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   103
class OopMapBlock VALUE_OBJ_CLASS_SPEC {
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   104
 public:
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   105
  // Byte offset of the first oop mapped by this block.
3694
942b7bc7f28c 6845368: large objects cause a crash or unexpected exception
jcoomes
parents: 3693
diff changeset
   106
  int offset() const          { return _offset; }
942b7bc7f28c 6845368: large objects cause a crash or unexpected exception
jcoomes
parents: 3693
diff changeset
   107
  void set_offset(int offset) { _offset = offset; }
3693
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   108
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   109
  // Number of oops in this block.
3694
942b7bc7f28c 6845368: large objects cause a crash or unexpected exception
jcoomes
parents: 3693
diff changeset
   110
  uint count() const         { return _count; }
942b7bc7f28c 6845368: large objects cause a crash or unexpected exception
jcoomes
parents: 3693
diff changeset
   111
  void set_count(uint count) { _count = count; }
3693
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   112
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   113
  // sizeof(OopMapBlock) in HeapWords.
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   114
  static const int size_in_words() {
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   115
    return align_size_up(int(sizeof(OopMapBlock)), HeapWordSize) >>
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   116
      LogHeapWordSize;
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   117
  }
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   118
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   119
 private:
3694
942b7bc7f28c 6845368: large objects cause a crash or unexpected exception
jcoomes
parents: 3693
diff changeset
   120
  int  _offset;
942b7bc7f28c 6845368: large objects cause a crash or unexpected exception
jcoomes
parents: 3693
diff changeset
   121
  uint _count;
3693
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   122
};
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   123
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   124
class instanceKlass: public Klass {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   125
  friend class VMStructs;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   126
 public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   127
  // See "The Java Virtual Machine Specification" section 2.16.2-5 for a detailed description
489c9b5090e2 Initial load
duke
parents:
diff changeset
   128
  // of the class loading & initialization procedure, and the use of the states.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   129
  enum ClassState {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   130
    unparsable_by_gc = 0,               // object is not yet parsable by gc. Value of _init_state at object allocation.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   131
    allocated,                          // allocated (but not yet linked)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   132
    loaded,                             // loaded and inserted in class hierarchy (but not linked yet)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   133
    linked,                             // successfully linked/verified (but not initialized yet)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   134
    being_initialized,                  // currently running class initializer
489c9b5090e2 Initial load
duke
parents:
diff changeset
   135
    fully_initialized,                  // initialized (successfull final state)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   136
    initialization_error                // error happened during initialization
489c9b5090e2 Initial load
duke
parents:
diff changeset
   137
  };
489c9b5090e2 Initial load
duke
parents:
diff changeset
   138
489c9b5090e2 Initial load
duke
parents:
diff changeset
   139
 public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   140
  oop* oop_block_beg() const { return adr_array_klasses(); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   141
  oop* oop_block_end() const { return adr_methods_default_annotations() + 1; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   142
489c9b5090e2 Initial load
duke
parents:
diff changeset
   143
  enum {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   144
    implementors_limit = 2              // how many implems can we track?
489c9b5090e2 Initial load
duke
parents:
diff changeset
   145
  };
489c9b5090e2 Initial load
duke
parents:
diff changeset
   146
489c9b5090e2 Initial load
duke
parents:
diff changeset
   147
 protected:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   148
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   149
  // The oop block.  See comment in klass.hpp before making changes.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   150
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   151
489c9b5090e2 Initial load
duke
parents:
diff changeset
   152
  // Array classes holding elements of this class.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   153
  klassOop        _array_klasses;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   154
  // Method array.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   155
  objArrayOop     _methods;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   156
  // Int array containing the original order of method in the class file (for
489c9b5090e2 Initial load
duke
parents:
diff changeset
   157
  // JVMTI).
489c9b5090e2 Initial load
duke
parents:
diff changeset
   158
  typeArrayOop    _method_ordering;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   159
  // Interface (klassOops) this class declares locally to implement.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   160
  objArrayOop     _local_interfaces;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   161
  // Interface (klassOops) this class implements transitively.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   162
  objArrayOop     _transitive_interfaces;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   163
  // Instance and static variable information, 5-tuples of shorts [access, name
489c9b5090e2 Initial load
duke
parents:
diff changeset
   164
  // index, sig index, initval index, offset].
489c9b5090e2 Initial load
duke
parents:
diff changeset
   165
  typeArrayOop    _fields;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   166
  // Constant pool for this class.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   167
  constantPoolOop _constants;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   168
  // Class loader used to load this class, NULL if VM loader used.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   169
  oop             _class_loader;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   170
  // Protection domain.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   171
  oop             _protection_domain;
1550
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 1388
diff changeset
   172
  // Host class, which grants its access privileges to this class also.
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 1388
diff changeset
   173
  // This is only non-null for an anonymous class (AnonymousClasses enabled).
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 1388
diff changeset
   174
  // The host class is either named, or a previously loaded anonymous class.
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 1388
diff changeset
   175
  klassOop        _host_klass;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   176
  // Class signers.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   177
  objArrayOop     _signers;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   178
  // Name of source file containing this klass, NULL if not specified.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   179
  symbolOop       _source_file_name;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   180
  // the source debug extension for this klass, NULL if not specified.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   181
  symbolOop       _source_debug_extension;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   182
  // inner_classes attribute.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   183
  typeArrayOop    _inner_classes;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   184
  // Implementors of this interface (not valid if it overflows)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   185
  klassOop        _implementors[implementors_limit];
489c9b5090e2 Initial load
duke
parents:
diff changeset
   186
  // Generic signature, or null if none.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   187
  symbolOop       _generic_signature;
2570
ecc7862946d4 6655646: dynamic languages need dynamically linked call sites
jrose
parents: 2343
diff changeset
   188
  // invokedynamic bootstrap method (a java.dyn.MethodHandle)
ecc7862946d4 6655646: dynamic languages need dynamically linked call sites
jrose
parents: 2343
diff changeset
   189
  oop             _bootstrap_method;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   190
  // Annotations for this class, or null if none.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   191
  typeArrayOop    _class_annotations;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   192
  // Annotation objects (byte arrays) for fields, or null if no annotations.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   193
  // Indices correspond to entries (not indices) in fields array.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   194
  objArrayOop     _fields_annotations;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   195
  // Annotation objects (byte arrays) for methods, or null if no annotations.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   196
  // Index is the idnum, which is initially the same as the methods array index.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   197
  objArrayOop     _methods_annotations;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   198
  // Annotation objects (byte arrays) for methods' parameters, or null if no
489c9b5090e2 Initial load
duke
parents:
diff changeset
   199
  // such annotations.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   200
  // Index is the idnum, which is initially the same as the methods array index.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   201
  objArrayOop     _methods_parameter_annotations;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   202
  // Annotation objects (byte arrays) for methods' default values, or null if no
489c9b5090e2 Initial load
duke
parents:
diff changeset
   203
  // such annotations.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   204
  // Index is the idnum, which is initially the same as the methods array index.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   205
  objArrayOop     _methods_default_annotations;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   206
489c9b5090e2 Initial load
duke
parents:
diff changeset
   207
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   208
  // End of the oop block.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   209
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   210
591
04d2e26e6d69 6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents: 360
diff changeset
   211
  // Number of heapOopSize words used by non-static fields in this klass
04d2e26e6d69 6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents: 360
diff changeset
   212
  // (including inherited fields but after header_size()).
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 222
diff changeset
   213
  int             _nonstatic_field_size;
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 222
diff changeset
   214
  int             _static_field_size;    // number words used by static fields (oop and non-oop) in this klass
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   215
  int             _static_oop_field_size;// number of static oop fields in this klass
3693
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   216
  int             _nonstatic_oop_map_size;// size in words of nonstatic oop map blocks
3822
388b0393a042 6879572: SA fails _is_marked_dependent not found
acorn
parents: 3821
diff changeset
   217
  bool            _is_marked_dependent;  // used for marking during flushing and deoptimization
388b0393a042 6879572: SA fails _is_marked_dependent not found
acorn
parents: 3821
diff changeset
   218
  bool            _rewritten;            // methods rewritten.
388b0393a042 6879572: SA fails _is_marked_dependent not found
acorn
parents: 3821
diff changeset
   219
  bool            _has_nonstatic_fields; // for sizing with UseCompressedOops
388b0393a042 6879572: SA fails _is_marked_dependent not found
acorn
parents: 3821
diff changeset
   220
  bool            _should_verify_class;  // allow caching of preverification
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   221
  u2              _minor_version;        // minor version number of class file
489c9b5090e2 Initial load
duke
parents:
diff changeset
   222
  u2              _major_version;        // major version number of class file
489c9b5090e2 Initial load
duke
parents:
diff changeset
   223
  ClassState      _init_state;           // state of class
489c9b5090e2 Initial load
duke
parents:
diff changeset
   224
  Thread*         _init_thread;          // Pointer to current thread doing initialization (to handle recusive initialization)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   225
  int             _vtable_len;           // length of Java vtable (in words)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   226
  int             _itable_len;           // length of Java itable (in words)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   227
  ReferenceType   _reference_type;       // reference type
489c9b5090e2 Initial load
duke
parents:
diff changeset
   228
  OopMapCache*    volatile _oop_map_cache;   // OopMapCache for all methods in the klass (allocated lazily)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   229
  JNIid*          _jni_ids;              // First JNI identifier for static fields in this class
489c9b5090e2 Initial load
duke
parents:
diff changeset
   230
  jmethodID*      _methods_jmethod_ids;  // jmethodIDs corresponding to method_idnum, or NULL if none
489c9b5090e2 Initial load
duke
parents:
diff changeset
   231
  int*            _methods_cached_itable_indices;  // itable_index cache for JNI invoke corresponding to methods idnum, or NULL
489c9b5090e2 Initial load
duke
parents:
diff changeset
   232
  nmethodBucket*  _dependencies;         // list of dependent nmethods
489c9b5090e2 Initial load
duke
parents:
diff changeset
   233
  nmethod*        _osr_nmethods_head;    // Head of list of on-stack replacement nmethods for this class
489c9b5090e2 Initial load
duke
parents:
diff changeset
   234
  BreakpointInfo* _breakpoints;          // bpt lists, managed by methodOop
489c9b5090e2 Initial load
duke
parents:
diff changeset
   235
  int             _nof_implementors;     // No of implementors of this interface (zero if not an interface)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   236
  // Array of interesting part(s) of the previous version(s) of this
489c9b5090e2 Initial load
duke
parents:
diff changeset
   237
  // instanceKlass. See PreviousVersionWalker below.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   238
  GrowableArray<PreviousVersionNode *>* _previous_versions;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   239
  u2              _enclosing_method_class_index;  // Constant pool index for class of enclosing method, or 0 if none
489c9b5090e2 Initial load
duke
parents:
diff changeset
   240
  u2              _enclosing_method_method_index; // Constant pool index for name and type of enclosing method, or 0 if none
489c9b5090e2 Initial load
duke
parents:
diff changeset
   241
  // JVMTI fields can be moved to their own structure - see 6315920
489c9b5090e2 Initial load
duke
parents:
diff changeset
   242
  unsigned char * _cached_class_file_bytes;       // JVMTI: cached class file, before retransformable agent modified it in CFLH
489c9b5090e2 Initial load
duke
parents:
diff changeset
   243
  jint            _cached_class_file_len;         // JVMTI: length of above
489c9b5090e2 Initial load
duke
parents:
diff changeset
   244
  JvmtiCachedClassFieldMap* _jvmti_cached_class_field_map;  // JVMTI: used during heap iteration
489c9b5090e2 Initial load
duke
parents:
diff changeset
   245
  volatile u2     _idnum_allocated_count;         // JNI/JVMTI: increments with the addition of methods, old ids don't change
489c9b5090e2 Initial load
duke
parents:
diff changeset
   246
489c9b5090e2 Initial load
duke
parents:
diff changeset
   247
  // embedded Java vtable follows here
489c9b5090e2 Initial load
duke
parents:
diff changeset
   248
  // embedded Java itables follows here
489c9b5090e2 Initial load
duke
parents:
diff changeset
   249
  // embedded static fields follows here
489c9b5090e2 Initial load
duke
parents:
diff changeset
   250
  // embedded nonstatic oop-map blocks follows here
489c9b5090e2 Initial load
duke
parents:
diff changeset
   251
489c9b5090e2 Initial load
duke
parents:
diff changeset
   252
  friend class instanceKlassKlass;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   253
  friend class SystemDictionary;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   254
489c9b5090e2 Initial load
duke
parents:
diff changeset
   255
 public:
3822
388b0393a042 6879572: SA fails _is_marked_dependent not found
acorn
parents: 3821
diff changeset
   256
  bool has_nonstatic_fields() const        { return _has_nonstatic_fields; }
388b0393a042 6879572: SA fails _is_marked_dependent not found
acorn
parents: 3821
diff changeset
   257
  void set_has_nonstatic_fields(bool b)    { _has_nonstatic_fields = b; }
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 222
diff changeset
   258
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   259
  // field sizes
489c9b5090e2 Initial load
duke
parents:
diff changeset
   260
  int nonstatic_field_size() const         { return _nonstatic_field_size; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   261
  void set_nonstatic_field_size(int size)  { _nonstatic_field_size = size; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   262
489c9b5090e2 Initial load
duke
parents:
diff changeset
   263
  int static_field_size() const            { return _static_field_size; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   264
  void set_static_field_size(int size)     { _static_field_size = size; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   265
489c9b5090e2 Initial load
duke
parents:
diff changeset
   266
  int static_oop_field_size() const        { return _static_oop_field_size; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   267
  void set_static_oop_field_size(int size) { _static_oop_field_size = size; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   268
489c9b5090e2 Initial load
duke
parents:
diff changeset
   269
  // Java vtable
489c9b5090e2 Initial load
duke
parents:
diff changeset
   270
  int  vtable_length() const               { return _vtable_len; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   271
  void set_vtable_length(int len)          { _vtable_len = len; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   272
489c9b5090e2 Initial load
duke
parents:
diff changeset
   273
  // Java itable
489c9b5090e2 Initial load
duke
parents:
diff changeset
   274
  int  itable_length() const               { return _itable_len; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   275
  void set_itable_length(int len)          { _itable_len = len; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   276
489c9b5090e2 Initial load
duke
parents:
diff changeset
   277
  // array klasses
489c9b5090e2 Initial load
duke
parents:
diff changeset
   278
  klassOop array_klasses() const           { return _array_klasses; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   279
  void set_array_klasses(klassOop k)       { oop_store_without_check((oop*) &_array_klasses, (oop) k); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   280
489c9b5090e2 Initial load
duke
parents:
diff changeset
   281
  // methods
489c9b5090e2 Initial load
duke
parents:
diff changeset
   282
  objArrayOop methods() const              { return _methods; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   283
  void set_methods(objArrayOop a)          { oop_store_without_check((oop*) &_methods, (oop) a); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   284
  methodOop method_with_idnum(int idnum);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   285
489c9b5090e2 Initial load
duke
parents:
diff changeset
   286
  // method ordering
489c9b5090e2 Initial load
duke
parents:
diff changeset
   287
  typeArrayOop method_ordering() const     { return _method_ordering; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   288
  void set_method_ordering(typeArrayOop m) { oop_store_without_check((oop*) &_method_ordering, (oop) m); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   289
489c9b5090e2 Initial load
duke
parents:
diff changeset
   290
  // interfaces
489c9b5090e2 Initial load
duke
parents:
diff changeset
   291
  objArrayOop local_interfaces() const          { return _local_interfaces; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   292
  void set_local_interfaces(objArrayOop a)      { oop_store_without_check((oop*) &_local_interfaces, (oop) a); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   293
  objArrayOop transitive_interfaces() const     { return _transitive_interfaces; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   294
  void set_transitive_interfaces(objArrayOop a) { oop_store_without_check((oop*) &_transitive_interfaces, (oop) a); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   295
489c9b5090e2 Initial load
duke
parents:
diff changeset
   296
  // fields
489c9b5090e2 Initial load
duke
parents:
diff changeset
   297
  // Field info extracted from the class file and stored
489c9b5090e2 Initial load
duke
parents:
diff changeset
   298
  // as an array of 7 shorts
489c9b5090e2 Initial load
duke
parents:
diff changeset
   299
  enum FieldOffset {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   300
    access_flags_offset    = 0,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   301
    name_index_offset      = 1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   302
    signature_index_offset = 2,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   303
    initval_index_offset   = 3,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   304
    low_offset             = 4,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   305
    high_offset            = 5,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   306
    generic_signature_offset = 6,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   307
    next_offset            = 7
489c9b5090e2 Initial load
duke
parents:
diff changeset
   308
  };
489c9b5090e2 Initial load
duke
parents:
diff changeset
   309
489c9b5090e2 Initial load
duke
parents:
diff changeset
   310
  typeArrayOop fields() const              { return _fields; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   311
  int offset_from_fields( int index ) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   312
    return build_int_from_shorts( fields()->ushort_at(index + low_offset),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   313
                                  fields()->ushort_at(index + high_offset) );
489c9b5090e2 Initial load
duke
parents:
diff changeset
   314
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   315
489c9b5090e2 Initial load
duke
parents:
diff changeset
   316
  void set_fields(typeArrayOop f)          { oop_store_without_check((oop*) &_fields, (oop) f); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   317
489c9b5090e2 Initial load
duke
parents:
diff changeset
   318
  // inner classes
489c9b5090e2 Initial load
duke
parents:
diff changeset
   319
  typeArrayOop inner_classes() const       { return _inner_classes; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   320
  void set_inner_classes(typeArrayOop f)   { oop_store_without_check((oop*) &_inner_classes, (oop) f); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   321
489c9b5090e2 Initial load
duke
parents:
diff changeset
   322
  enum InnerClassAttributeOffset {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   323
    // From http://mirror.eng/products/jdk/1.1/docs/guide/innerclasses/spec/innerclasses.doc10.html#18814
489c9b5090e2 Initial load
duke
parents:
diff changeset
   324
    inner_class_inner_class_info_offset = 0,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   325
    inner_class_outer_class_info_offset = 1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   326
    inner_class_inner_name_offset = 2,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   327
    inner_class_access_flags_offset = 3,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   328
    inner_class_next_offset = 4
489c9b5090e2 Initial load
duke
parents:
diff changeset
   329
  };
489c9b5090e2 Initial load
duke
parents:
diff changeset
   330
2264
55d0115a54fe 4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents: 1550
diff changeset
   331
  // method override check
55d0115a54fe 4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents: 1550
diff changeset
   332
  bool is_override(methodHandle super_method, Handle targetclassloader, symbolHandle targetclassname, TRAPS);
55d0115a54fe 4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents: 1550
diff changeset
   333
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   334
  // package
489c9b5090e2 Initial load
duke
parents:
diff changeset
   335
  bool is_same_class_package(klassOop class2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   336
  bool is_same_class_package(oop classloader2, symbolOop classname2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   337
  static bool is_same_class_package(oop class_loader1, symbolOop class_name1, oop class_loader2, symbolOop class_name2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   338
2332
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 1550
diff changeset
   339
  // find an enclosing class (defined where original code was, in jvm.cpp!)
4496
c5a0b15a8e7d 6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
xlu
parents: 4094
diff changeset
   340
  klassOop compute_enclosing_class(bool* inner_is_member, TRAPS) {
2332
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 1550
diff changeset
   341
    instanceKlassHandle self(THREAD, this->as_klassOop());
4496
c5a0b15a8e7d 6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
xlu
parents: 4094
diff changeset
   342
    return compute_enclosing_class_impl(self, inner_is_member, THREAD);
2332
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 1550
diff changeset
   343
  }
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 1550
diff changeset
   344
  static klassOop compute_enclosing_class_impl(instanceKlassHandle self,
4496
c5a0b15a8e7d 6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
xlu
parents: 4094
diff changeset
   345
                                               bool* inner_is_member, TRAPS);
2332
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 1550
diff changeset
   346
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 1550
diff changeset
   347
  // tell if two classes have the same enclosing class (at package level)
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 1550
diff changeset
   348
  bool is_same_package_member(klassOop class2, TRAPS) {
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 1550
diff changeset
   349
    instanceKlassHandle self(THREAD, this->as_klassOop());
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 1550
diff changeset
   350
    return is_same_package_member_impl(self, class2, THREAD);
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 1550
diff changeset
   351
  }
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 1550
diff changeset
   352
  static bool is_same_package_member_impl(instanceKlassHandle self,
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 1550
diff changeset
   353
                                          klassOop class2, TRAPS);
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 1550
diff changeset
   354
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   355
  // initialization state
489c9b5090e2 Initial load
duke
parents:
diff changeset
   356
  bool is_loaded() const                   { return _init_state >= loaded; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   357
  bool is_linked() const                   { return _init_state >= linked; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   358
  bool is_initialized() const              { return _init_state == fully_initialized; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   359
  bool is_not_initialized() const          { return _init_state <  being_initialized; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   360
  bool is_being_initialized() const        { return _init_state == being_initialized; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   361
  bool is_in_error_state() const           { return _init_state == initialization_error; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   362
  bool is_reentrant_initialization(Thread *thread)  { return thread == _init_thread; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   363
  int  get_init_state()                    { return _init_state; } // Useful for debugging
3822
388b0393a042 6879572: SA fails _is_marked_dependent not found
acorn
parents: 3821
diff changeset
   364
  bool is_rewritten() const                { return _rewritten; }
3820
0a8fbbe180db 6830542: Performance: JVM_DefineClass already verified.
acorn
parents: 2570
diff changeset
   365
0a8fbbe180db 6830542: Performance: JVM_DefineClass already verified.
acorn
parents: 2570
diff changeset
   366
  // defineClass specified verification
3822
388b0393a042 6879572: SA fails _is_marked_dependent not found
acorn
parents: 3821
diff changeset
   367
  bool should_verify_class() const         { return _should_verify_class; }
388b0393a042 6879572: SA fails _is_marked_dependent not found
acorn
parents: 3821
diff changeset
   368
  void set_should_verify_class(bool value) { _should_verify_class = value; }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   369
489c9b5090e2 Initial load
duke
parents:
diff changeset
   370
  // marking
3822
388b0393a042 6879572: SA fails _is_marked_dependent not found
acorn
parents: 3821
diff changeset
   371
  bool is_marked_dependent() const         { return _is_marked_dependent; }
388b0393a042 6879572: SA fails _is_marked_dependent not found
acorn
parents: 3821
diff changeset
   372
  void set_is_marked_dependent(bool value) { _is_marked_dependent = value; }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   373
489c9b5090e2 Initial load
duke
parents:
diff changeset
   374
  // initialization (virtuals from Klass)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   375
  bool should_be_initialized() const;  // means that initialize should be called
489c9b5090e2 Initial load
duke
parents:
diff changeset
   376
  void initialize(TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   377
  void link_class(TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   378
  bool link_class_or_fail(TRAPS); // returns false on failure
489c9b5090e2 Initial load
duke
parents:
diff changeset
   379
  void unlink_class();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   380
  void rewrite_class(TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   381
  methodOop class_initializer();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   382
489c9b5090e2 Initial load
duke
parents:
diff changeset
   383
  // set the class to initialized if no static initializer is present
489c9b5090e2 Initial load
duke
parents:
diff changeset
   384
  void eager_initialize(Thread *thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   385
489c9b5090e2 Initial load
duke
parents:
diff changeset
   386
  // reference type
489c9b5090e2 Initial load
duke
parents:
diff changeset
   387
  ReferenceType reference_type() const     { return _reference_type; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   388
  void set_reference_type(ReferenceType t) { _reference_type = t; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   389
489c9b5090e2 Initial load
duke
parents:
diff changeset
   390
  // find local field, returns true if found
489c9b5090e2 Initial load
duke
parents:
diff changeset
   391
  bool find_local_field(symbolOop name, symbolOop sig, fieldDescriptor* fd) const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   392
  // find field in direct superinterfaces, returns the interface in which the field is defined
489c9b5090e2 Initial load
duke
parents:
diff changeset
   393
  klassOop find_interface_field(symbolOop name, symbolOop sig, fieldDescriptor* fd) const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   394
  // find field according to JVM spec 5.4.3.2, returns the klass in which the field is defined
489c9b5090e2 Initial load
duke
parents:
diff changeset
   395
  klassOop find_field(symbolOop name, symbolOop sig, fieldDescriptor* fd) const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   396
  // find instance or static fields according to JVM spec 5.4.3.2, returns the klass in which the field is defined
489c9b5090e2 Initial load
duke
parents:
diff changeset
   397
  klassOop find_field(symbolOop name, symbolOop sig, bool is_static, fieldDescriptor* fd) const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   398
489c9b5090e2 Initial load
duke
parents:
diff changeset
   399
  // find a non-static or static field given its offset within the class.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   400
  bool contains_field_offset(int offset) {
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 222
diff changeset
   401
    return instanceOopDesc::contains_field_offset(offset, nonstatic_field_size());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   402
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   403
489c9b5090e2 Initial load
duke
parents:
diff changeset
   404
  bool find_local_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   405
  bool find_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   406
489c9b5090e2 Initial load
duke
parents:
diff changeset
   407
  // find a local method (returns NULL if not found)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   408
  methodOop find_method(symbolOop name, symbolOop signature) const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   409
  static methodOop find_method(objArrayOop methods, symbolOop name, symbolOop signature);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   410
489c9b5090e2 Initial load
duke
parents:
diff changeset
   411
  // lookup operation (returns NULL if not found)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   412
  methodOop uncached_lookup_method(symbolOop name, symbolOop signature) const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   413
489c9b5090e2 Initial load
duke
parents:
diff changeset
   414
  // lookup a method in all the interfaces that this class implements
489c9b5090e2 Initial load
duke
parents:
diff changeset
   415
  // (returns NULL if not found)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   416
  methodOop lookup_method_in_all_interfaces(symbolOop name, symbolOop signature) const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   417
489c9b5090e2 Initial load
duke
parents:
diff changeset
   418
  // constant pool
489c9b5090e2 Initial load
duke
parents:
diff changeset
   419
  constantPoolOop constants() const        { return _constants; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   420
  void set_constants(constantPoolOop c)    { oop_store_without_check((oop*) &_constants, (oop) c); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   421
489c9b5090e2 Initial load
duke
parents:
diff changeset
   422
  // class loader
489c9b5090e2 Initial load
duke
parents:
diff changeset
   423
  oop class_loader() const                 { return _class_loader; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   424
  void set_class_loader(oop l)             { oop_store((oop*) &_class_loader, l); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   425
489c9b5090e2 Initial load
duke
parents:
diff changeset
   426
  // protection domain
489c9b5090e2 Initial load
duke
parents:
diff changeset
   427
  oop protection_domain()                  { return _protection_domain; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   428
  void set_protection_domain(oop pd)       { oop_store((oop*) &_protection_domain, pd); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   429
1550
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 1388
diff changeset
   430
  // host class
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 1388
diff changeset
   431
  oop host_klass() const                   { return _host_klass; }
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 1388
diff changeset
   432
  void set_host_klass(oop host)            { oop_store((oop*) &_host_klass, host); }
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 1388
diff changeset
   433
  bool is_anonymous() const                { return _host_klass != NULL; }
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 1388
diff changeset
   434
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   435
  // signers
489c9b5090e2 Initial load
duke
parents:
diff changeset
   436
  objArrayOop signers() const              { return _signers; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   437
  void set_signers(objArrayOop s)          { oop_store((oop*) &_signers, oop(s)); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   438
489c9b5090e2 Initial load
duke
parents:
diff changeset
   439
  // source file name
489c9b5090e2 Initial load
duke
parents:
diff changeset
   440
  symbolOop source_file_name() const       { return _source_file_name; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   441
  void set_source_file_name(symbolOop n)   { oop_store_without_check((oop*) &_source_file_name, (oop) n); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   442
489c9b5090e2 Initial load
duke
parents:
diff changeset
   443
  // minor and major version numbers of class file
489c9b5090e2 Initial load
duke
parents:
diff changeset
   444
  u2 minor_version() const                 { return _minor_version; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   445
  void set_minor_version(u2 minor_version) { _minor_version = minor_version; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   446
  u2 major_version() const                 { return _major_version; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   447
  void set_major_version(u2 major_version) { _major_version = major_version; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   448
489c9b5090e2 Initial load
duke
parents:
diff changeset
   449
  // source debug extension
489c9b5090e2 Initial load
duke
parents:
diff changeset
   450
  symbolOop source_debug_extension() const    { return _source_debug_extension; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   451
  void set_source_debug_extension(symbolOop n){ oop_store_without_check((oop*) &_source_debug_extension, (oop) n); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   452
489c9b5090e2 Initial load
duke
parents:
diff changeset
   453
  // nonstatic oop-map blocks
3694
942b7bc7f28c 6845368: large objects cause a crash or unexpected exception
jcoomes
parents: 3693
diff changeset
   454
  static int nonstatic_oop_map_size(unsigned int oop_map_count) {
3693
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   455
    return oop_map_count * OopMapBlock::size_in_words();
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   456
  }
3694
942b7bc7f28c 6845368: large objects cause a crash or unexpected exception
jcoomes
parents: 3693
diff changeset
   457
  unsigned int nonstatic_oop_map_count() const {
3693
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   458
    return _nonstatic_oop_map_size / OopMapBlock::size_in_words();
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   459
  }
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   460
  int nonstatic_oop_map_size() const { return _nonstatic_oop_map_size; }
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   461
  void set_nonstatic_oop_map_size(int words) {
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   462
    _nonstatic_oop_map_size = words;
af387bf37e8d 6861660: OopMapBlock count/size confusion
jcoomes
parents: 2570
diff changeset
   463
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   464
489c9b5090e2 Initial load
duke
parents:
diff changeset
   465
  // RedefineClasses() support for previous versions:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   466
  void add_previous_version(instanceKlassHandle ikh, BitMap *emcp_methods,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   467
         int emcp_method_count);
3824
86e9e4b25bdf 6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents: 3822
diff changeset
   468
  // If the _previous_versions array is non-NULL, then this klass
86e9e4b25bdf 6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents: 3822
diff changeset
   469
  // has been redefined at least once even if we aren't currently
86e9e4b25bdf 6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents: 3822
diff changeset
   470
  // tracking a previous version.
86e9e4b25bdf 6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents: 3822
diff changeset
   471
  bool has_been_redefined() const { return _previous_versions != NULL; }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   472
  bool has_previous_version() const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   473
  void init_previous_versions() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   474
    _previous_versions = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   475
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   476
  GrowableArray<PreviousVersionNode *>* previous_versions() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   477
    return _previous_versions;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   478
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   479
489c9b5090e2 Initial load
duke
parents:
diff changeset
   480
  // JVMTI: Support for caching a class file before it is modified by an agent that can do retransformation
489c9b5090e2 Initial load
duke
parents:
diff changeset
   481
  void set_cached_class_file(unsigned char *class_file_bytes,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   482
                             jint class_file_len)     { _cached_class_file_len = class_file_len;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   483
                                                        _cached_class_file_bytes = class_file_bytes; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   484
  jint get_cached_class_file_len()                    { return _cached_class_file_len; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   485
  unsigned char * get_cached_class_file_bytes()       { return _cached_class_file_bytes; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   486
489c9b5090e2 Initial load
duke
parents:
diff changeset
   487
  // JVMTI: Support for caching of field indices, types, and offsets
489c9b5090e2 Initial load
duke
parents:
diff changeset
   488
  void set_jvmti_cached_class_field_map(JvmtiCachedClassFieldMap* descriptor) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   489
    _jvmti_cached_class_field_map = descriptor;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   490
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   491
  JvmtiCachedClassFieldMap* jvmti_cached_class_field_map() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   492
    return _jvmti_cached_class_field_map;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   493
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   494
489c9b5090e2 Initial load
duke
parents:
diff changeset
   495
  // for adding methods, constMethodOopDesc::UNSET_IDNUM means no more ids available
489c9b5090e2 Initial load
duke
parents:
diff changeset
   496
  inline u2 next_method_idnum();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   497
  void set_initial_method_idnum(u2 value)             { _idnum_allocated_count = value; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   498
489c9b5090e2 Initial load
duke
parents:
diff changeset
   499
  // generics support
489c9b5090e2 Initial load
duke
parents:
diff changeset
   500
  symbolOop generic_signature() const                 { return _generic_signature; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   501
  void set_generic_signature(symbolOop sig)           { oop_store_without_check((oop*)&_generic_signature, (oop)sig); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   502
  u2 enclosing_method_class_index() const             { return _enclosing_method_class_index; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   503
  u2 enclosing_method_method_index() const            { return _enclosing_method_method_index; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   504
  void set_enclosing_method_indices(u2 class_index,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   505
                                    u2 method_index)  { _enclosing_method_class_index  = class_index;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   506
                                                        _enclosing_method_method_index = method_index; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   507
2570
ecc7862946d4 6655646: dynamic languages need dynamically linked call sites
jrose
parents: 2343
diff changeset
   508
  // JSR 292 support
ecc7862946d4 6655646: dynamic languages need dynamically linked call sites
jrose
parents: 2343
diff changeset
   509
  oop bootstrap_method() const                        { return _bootstrap_method; }
ecc7862946d4 6655646: dynamic languages need dynamically linked call sites
jrose
parents: 2343
diff changeset
   510
  void set_bootstrap_method(oop mh)                   { oop_store(&_bootstrap_method, mh); }
ecc7862946d4 6655646: dynamic languages need dynamically linked call sites
jrose
parents: 2343
diff changeset
   511
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   512
  // jmethodID support
3824
86e9e4b25bdf 6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents: 3822
diff changeset
   513
  static jmethodID get_jmethod_id(instanceKlassHandle ik_h,
86e9e4b25bdf 6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents: 3822
diff changeset
   514
                     methodHandle method_h);
86e9e4b25bdf 6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents: 3822
diff changeset
   515
  static jmethodID get_jmethod_id_fetch_or_update(instanceKlassHandle ik_h,
86e9e4b25bdf 6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents: 3822
diff changeset
   516
                     size_t idnum, jmethodID new_id, jmethodID* new_jmeths,
86e9e4b25bdf 6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents: 3822
diff changeset
   517
                     jmethodID* to_dealloc_id_p,
86e9e4b25bdf 6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents: 3822
diff changeset
   518
                     jmethodID** to_dealloc_jmeths_p);
86e9e4b25bdf 6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents: 3822
diff changeset
   519
  static void get_jmethod_id_length_value(jmethodID* cache, size_t idnum,
86e9e4b25bdf 6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents: 3822
diff changeset
   520
                size_t *length_p, jmethodID* id_p);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   521
  jmethodID jmethod_id_or_null(methodOop method);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   522
489c9b5090e2 Initial load
duke
parents:
diff changeset
   523
  // cached itable index support
489c9b5090e2 Initial load
duke
parents:
diff changeset
   524
  void set_cached_itable_index(size_t idnum, int index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   525
  int cached_itable_index(size_t idnum);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   526
489c9b5090e2 Initial load
duke
parents:
diff changeset
   527
  // annotations support
489c9b5090e2 Initial load
duke
parents:
diff changeset
   528
  typeArrayOop class_annotations() const              { return _class_annotations; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   529
  objArrayOop fields_annotations() const              { return _fields_annotations; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   530
  objArrayOop methods_annotations() const             { return _methods_annotations; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   531
  objArrayOop methods_parameter_annotations() const   { return _methods_parameter_annotations; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   532
  objArrayOop methods_default_annotations() const     { return _methods_default_annotations; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   533
  void set_class_annotations(typeArrayOop md)            { oop_store_without_check((oop*)&_class_annotations, (oop)md); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   534
  void set_fields_annotations(objArrayOop md)            { set_annotations(md, &_fields_annotations); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   535
  void set_methods_annotations(objArrayOop md)           { set_annotations(md, &_methods_annotations); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   536
  void set_methods_parameter_annotations(objArrayOop md) { set_annotations(md, &_methods_parameter_annotations); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   537
  void set_methods_default_annotations(objArrayOop md)   { set_annotations(md, &_methods_default_annotations); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   538
  typeArrayOop get_method_annotations_of(int idnum)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   539
                                                { return get_method_annotations_from(idnum, _methods_annotations); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   540
  typeArrayOop get_method_parameter_annotations_of(int idnum)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   541
                                                { return get_method_annotations_from(idnum, _methods_parameter_annotations); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   542
  typeArrayOop get_method_default_annotations_of(int idnum)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   543
                                                { return get_method_annotations_from(idnum, _methods_default_annotations); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   544
  void set_method_annotations_of(int idnum, typeArrayOop anno)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   545
                                                { set_methods_annotations_of(idnum, anno, &_methods_annotations); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   546
  void set_method_parameter_annotations_of(int idnum, typeArrayOop anno)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   547
                                                { set_methods_annotations_of(idnum, anno, &_methods_annotations); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   548
  void set_method_default_annotations_of(int idnum, typeArrayOop anno)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   549
                                                { set_methods_annotations_of(idnum, anno, &_methods_annotations); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   550
489c9b5090e2 Initial load
duke
parents:
diff changeset
   551
  // allocation
489c9b5090e2 Initial load
duke
parents:
diff changeset
   552
  DEFINE_ALLOCATE_PERMANENT(instanceKlass);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   553
  instanceOop allocate_instance(TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   554
  instanceOop allocate_permanent_instance(TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   555
489c9b5090e2 Initial load
duke
parents:
diff changeset
   556
  // additional member function to return a handle
489c9b5090e2 Initial load
duke
parents:
diff changeset
   557
  instanceHandle allocate_instance_handle(TRAPS)      { return instanceHandle(THREAD, allocate_instance(THREAD)); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   558
489c9b5090e2 Initial load
duke
parents:
diff changeset
   559
  objArrayOop allocate_objArray(int n, int length, TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   560
  // Helper function
489c9b5090e2 Initial load
duke
parents:
diff changeset
   561
  static instanceOop register_finalizer(instanceOop i, TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   562
489c9b5090e2 Initial load
duke
parents:
diff changeset
   563
  // Check whether reflection/jni/jvm code is allowed to instantiate this class;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   564
  // if not, throw either an Error or an Exception.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   565
  virtual void check_valid_for_instantiation(bool throwError, TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   566
489c9b5090e2 Initial load
duke
parents:
diff changeset
   567
  // initialization
489c9b5090e2 Initial load
duke
parents:
diff changeset
   568
  void call_class_initializer(TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   569
  void set_initialization_state_and_notify(ClassState state, TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   570
489c9b5090e2 Initial load
duke
parents:
diff changeset
   571
  // OopMapCache support
489c9b5090e2 Initial load
duke
parents:
diff changeset
   572
  OopMapCache* oop_map_cache()               { return _oop_map_cache; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   573
  void set_oop_map_cache(OopMapCache *cache) { _oop_map_cache = cache; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   574
  void mask_for(methodHandle method, int bci, InterpreterOopMap* entry);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   575
489c9b5090e2 Initial load
duke
parents:
diff changeset
   576
  // JNI identifier support (for static fields - for jni performance)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   577
  JNIid* jni_ids()                               { return _jni_ids; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   578
  void set_jni_ids(JNIid* ids)                   { _jni_ids = ids; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   579
  JNIid* jni_id_for(int offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   580
489c9b5090e2 Initial load
duke
parents:
diff changeset
   581
  // maintenance of deoptimization dependencies
489c9b5090e2 Initial load
duke
parents:
diff changeset
   582
  int mark_dependent_nmethods(DepChange& changes);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   583
  void add_dependent_nmethod(nmethod* nm);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   584
  void remove_dependent_nmethod(nmethod* nm);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   585
489c9b5090e2 Initial load
duke
parents:
diff changeset
   586
  // On-stack replacement support
489c9b5090e2 Initial load
duke
parents:
diff changeset
   587
  nmethod* osr_nmethods_head() const         { return _osr_nmethods_head; };
489c9b5090e2 Initial load
duke
parents:
diff changeset
   588
  void set_osr_nmethods_head(nmethod* h)     { _osr_nmethods_head = h; };
489c9b5090e2 Initial load
duke
parents:
diff changeset
   589
  void add_osr_nmethod(nmethod* n);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   590
  void remove_osr_nmethod(nmethod* n);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   591
  nmethod* lookup_osr_nmethod(const methodOop m, int bci) const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   592
489c9b5090e2 Initial load
duke
parents:
diff changeset
   593
  // Breakpoint support (see methods on methodOop for details)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   594
  BreakpointInfo* breakpoints() const       { return _breakpoints; };
489c9b5090e2 Initial load
duke
parents:
diff changeset
   595
  void set_breakpoints(BreakpointInfo* bps) { _breakpoints = bps; };
489c9b5090e2 Initial load
duke
parents:
diff changeset
   596
489c9b5090e2 Initial load
duke
parents:
diff changeset
   597
  // support for stub routines
489c9b5090e2 Initial load
duke
parents:
diff changeset
   598
  static int init_state_offset_in_bytes()    { return offset_of(instanceKlass, _init_state); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   599
  static int init_thread_offset_in_bytes()   { return offset_of(instanceKlass, _init_thread); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   600
489c9b5090e2 Initial load
duke
parents:
diff changeset
   601
  // subclass/subinterface checks
489c9b5090e2 Initial load
duke
parents:
diff changeset
   602
  bool implements_interface(klassOop k) const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   603
489c9b5090e2 Initial load
duke
parents:
diff changeset
   604
  // Access to implementors of an interface. We only store the count
489c9b5090e2 Initial load
duke
parents:
diff changeset
   605
  // of implementors, and in case, there are only a few
489c9b5090e2 Initial load
duke
parents:
diff changeset
   606
  // implementors, we store them in a short list.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   607
  // This accessor returns NULL if we walk off the end of the list.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   608
  klassOop implementor(int i) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   609
    return (i < implementors_limit)? _implementors[i]: (klassOop) NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   610
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   611
  int  nof_implementors() const       { return _nof_implementors; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   612
  void add_implementor(klassOop k);  // k is a new class that implements this interface
489c9b5090e2 Initial load
duke
parents:
diff changeset
   613
  void init_implementor();           // initialize
489c9b5090e2 Initial load
duke
parents:
diff changeset
   614
489c9b5090e2 Initial load
duke
parents:
diff changeset
   615
  // link this class into the implementors list of every interface it implements
489c9b5090e2 Initial load
duke
parents:
diff changeset
   616
  void process_interfaces(Thread *thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   617
489c9b5090e2 Initial load
duke
parents:
diff changeset
   618
  // virtual operations from Klass
489c9b5090e2 Initial load
duke
parents:
diff changeset
   619
  bool is_leaf_class() const               { return _subklass == NULL; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   620
  objArrayOop compute_secondary_supers(int num_extra_slots, TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   621
  bool compute_is_subtype_of(klassOop k);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   622
  bool can_be_primary_super_slow() const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   623
  klassOop java_super() const              { return super(); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   624
  int oop_size(oop obj)  const             { return size_helper(); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   625
  int klass_oop_size() const               { return object_size(); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   626
  bool oop_is_instance_slow() const        { return true; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   627
489c9b5090e2 Initial load
duke
parents:
diff changeset
   628
  // Iterators
489c9b5090e2 Initial load
duke
parents:
diff changeset
   629
  void do_local_static_fields(FieldClosure* cl);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   630
  void do_nonstatic_fields(FieldClosure* cl); // including inherited fields
489c9b5090e2 Initial load
duke
parents:
diff changeset
   631
  void do_local_static_fields(void f(fieldDescriptor*, TRAPS), TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   632
489c9b5090e2 Initial load
duke
parents:
diff changeset
   633
  void methods_do(void f(methodOop method));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   634
  void array_klasses_do(void f(klassOop k));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   635
  void with_array_klasses_do(void f(klassOop k));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   636
  bool super_types_do(SuperTypeClosure* blk);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   637
489c9b5090e2 Initial load
duke
parents:
diff changeset
   638
  // Casting from klassOop
489c9b5090e2 Initial load
duke
parents:
diff changeset
   639
  static instanceKlass* cast(klassOop k) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   640
    Klass* kp = k->klass_part();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   641
    assert(kp->null_vtbl() || kp->oop_is_instance_slow(), "cast to instanceKlass");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   642
    return (instanceKlass*) kp;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   643
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   644
489c9b5090e2 Initial load
duke
parents:
diff changeset
   645
  // Sizing (in words)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   646
  static int header_size()            { return align_object_offset(oopDesc::header_size() + sizeof(instanceKlass)/HeapWordSize); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   647
  int object_size() const             { return object_size(align_object_offset(vtable_length()) + align_object_offset(itable_length()) + static_field_size() + nonstatic_oop_map_size()); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   648
  static int vtable_start_offset()    { return header_size(); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   649
  static int vtable_length_offset()   { return oopDesc::header_size() + offset_of(instanceKlass, _vtable_len) / HeapWordSize; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   650
  static int object_size(int extra)   { return align_object_size(header_size() + extra); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   651
489c9b5090e2 Initial load
duke
parents:
diff changeset
   652
  intptr_t* start_of_vtable() const        { return ((intptr_t*)as_klassOop()) + vtable_start_offset(); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   653
  intptr_t* start_of_itable() const        { return start_of_vtable() + align_object_offset(vtable_length()); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   654
  int  itable_offset_in_words() const { return start_of_itable() - (intptr_t*)as_klassOop(); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   655
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 222
diff changeset
   656
  // Static field offset is an offset into the Heap, should be converted by
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 222
diff changeset
   657
  // based on UseCompressedOop for traversal
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 222
diff changeset
   658
  HeapWord* start_of_static_fields() const {
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 222
diff changeset
   659
    return (HeapWord*)(start_of_itable() + align_object_offset(itable_length()));
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 222
diff changeset
   660
  }
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 222
diff changeset
   661
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   662
  intptr_t* end_of_itable() const          { return start_of_itable() + itable_length(); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   663
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 222
diff changeset
   664
  int offset_of_static_fields() const {
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 222
diff changeset
   665
    return (intptr_t)start_of_static_fields() - (intptr_t)as_klassOop();
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 222
diff changeset
   666
  }
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 222
diff changeset
   667
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 222
diff changeset
   668
  OopMapBlock* start_of_nonstatic_oop_maps() const {
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 222
diff changeset
   669
    return (OopMapBlock*) (start_of_static_fields() + static_field_size());
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 222
diff changeset
   670
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   671
489c9b5090e2 Initial load
duke
parents:
diff changeset
   672
  // Allocation profiling support
489c9b5090e2 Initial load
duke
parents:
diff changeset
   673
  juint alloc_size() const            { return _alloc_count * size_helper(); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   674
  void set_alloc_size(juint n)        {}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   675
489c9b5090e2 Initial load
duke
parents:
diff changeset
   676
  // Use this to return the size of an instance in heap words:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   677
  int size_helper() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   678
    return layout_helper_to_size_helper(layout_helper());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   679
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   680
489c9b5090e2 Initial load
duke
parents:
diff changeset
   681
  // This bit is initialized in classFileParser.cpp.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   682
  // It is false under any of the following conditions:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   683
  //  - the class is abstract (including any interface)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   684
  //  - the class has a finalizer (if !RegisterFinalizersAtInit)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   685
  //  - the class size is larger than FastAllocateSizeLimit
489c9b5090e2 Initial load
duke
parents:
diff changeset
   686
  //  - the class is java/lang/Class, which cannot be allocated directly
489c9b5090e2 Initial load
duke
parents:
diff changeset
   687
  bool can_be_fastpath_allocated() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   688
    return !layout_helper_needs_slow_path(layout_helper());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   689
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   690
489c9b5090e2 Initial load
duke
parents:
diff changeset
   691
  // Java vtable/itable
489c9b5090e2 Initial load
duke
parents:
diff changeset
   692
  klassVtable* vtable() const;        // return new klassVtable wrapper
489c9b5090e2 Initial load
duke
parents:
diff changeset
   693
  inline methodOop method_at_vtable(int index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   694
  klassItable* itable() const;        // return new klassItable wrapper
489c9b5090e2 Initial load
duke
parents:
diff changeset
   695
  methodOop method_at_itable(klassOop holder, int index, TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   696
489c9b5090e2 Initial load
duke
parents:
diff changeset
   697
  // Garbage collection
489c9b5090e2 Initial load
duke
parents:
diff changeset
   698
  void oop_follow_contents(oop obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   699
  void follow_static_fields();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   700
  void adjust_static_fields();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   701
  int  oop_adjust_pointers(oop obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   702
  bool object_is_parsable() const { return _init_state != unparsable_by_gc; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   703
       // Value of _init_state must be zero (unparsable_by_gc) when klass field is set.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   704
489c9b5090e2 Initial load
duke
parents:
diff changeset
   705
  void follow_weak_klass_links(
489c9b5090e2 Initial load
duke
parents:
diff changeset
   706
    BoolObjectClosure* is_alive, OopClosure* keep_alive);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   707
  void release_C_heap_structures();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   708
489c9b5090e2 Initial load
duke
parents:
diff changeset
   709
  // Parallel Scavenge and Parallel Old
489c9b5090e2 Initial load
duke
parents:
diff changeset
   710
  PARALLEL_GC_DECLS
489c9b5090e2 Initial load
duke
parents:
diff changeset
   711
489c9b5090e2 Initial load
duke
parents:
diff changeset
   712
#ifndef SERIALGC
489c9b5090e2 Initial load
duke
parents:
diff changeset
   713
  // Parallel Scavenge
489c9b5090e2 Initial load
duke
parents:
diff changeset
   714
  void copy_static_fields(PSPromotionManager* pm);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   715
  void push_static_fields(PSPromotionManager* pm);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   716
489c9b5090e2 Initial load
duke
parents:
diff changeset
   717
  // Parallel Old
489c9b5090e2 Initial load
duke
parents:
diff changeset
   718
  void follow_static_fields(ParCompactionManager* cm);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   719
  void copy_static_fields(ParCompactionManager* cm);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   720
  void update_static_fields();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   721
  void update_static_fields(HeapWord* beg_addr, HeapWord* end_addr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   722
#endif // SERIALGC
489c9b5090e2 Initial load
duke
parents:
diff changeset
   723
489c9b5090e2 Initial load
duke
parents:
diff changeset
   724
  // Naming
4094
1f424b2b2171 6815692: method handle code needs some cleanup (post-6655638)
jrose
parents: 3824
diff changeset
   725
  const char* signature_name() const;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   726
489c9b5090e2 Initial load
duke
parents:
diff changeset
   727
  // Iterators
489c9b5090e2 Initial load
duke
parents:
diff changeset
   728
  int oop_oop_iterate(oop obj, OopClosure* blk) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   729
    return oop_oop_iterate_v(obj, blk);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   730
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   731
489c9b5090e2 Initial load
duke
parents:
diff changeset
   732
  int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   733
    return oop_oop_iterate_v_m(obj, blk, mr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   734
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   735
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
   736
#define InstanceKlass_OOP_OOP_ITERATE_DECL(OopClosureType, nv_suffix)      \
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
   737
  int  oop_oop_iterate##nv_suffix(oop obj, OopClosureType* blk);           \
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
   738
  int  oop_oop_iterate##nv_suffix##_m(oop obj, OopClosureType* blk,        \
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   739
                                      MemRegion mr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   740
489c9b5090e2 Initial load
duke
parents:
diff changeset
   741
  ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DECL)
1374
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
   742
  ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DECL)
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
   743
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
   744
#ifndef SERIALGC
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
   745
#define InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DECL(OopClosureType, nv_suffix) \
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
   746
  int  oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* blk);
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
   747
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
   748
  ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DECL)
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
   749
  ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DECL)
4c24294029a9 6711316: Open source the Garbage-First garbage collector
ysr
parents: 360
diff changeset
   750
#endif // !SERIALGC
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   751
489c9b5090e2 Initial load
duke
parents:
diff changeset
   752
  void iterate_static_fields(OopClosure* closure);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   753
  void iterate_static_fields(OopClosure* closure, MemRegion mr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   754
489c9b5090e2 Initial load
duke
parents:
diff changeset
   755
private:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   756
  // initialization state
489c9b5090e2 Initial load
duke
parents:
diff changeset
   757
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   758
  void set_init_state(ClassState state);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   759
#else
489c9b5090e2 Initial load
duke
parents:
diff changeset
   760
  void set_init_state(ClassState state) { _init_state = state; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   761
#endif
3822
388b0393a042 6879572: SA fails _is_marked_dependent not found
acorn
parents: 3821
diff changeset
   762
  void set_rewritten()                  { _rewritten = true; }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   763
  void set_init_thread(Thread *thread)  { _init_thread = thread; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   764
489c9b5090e2 Initial load
duke
parents:
diff changeset
   765
  u2 idnum_allocated_count() const      { return _idnum_allocated_count; }
3824
86e9e4b25bdf 6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents: 3822
diff changeset
   766
  // The RedefineClasses() API can cause new method idnums to be needed
86e9e4b25bdf 6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents: 3822
diff changeset
   767
  // which will cause the caches to grow. Safety requires different
86e9e4b25bdf 6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents: 3822
diff changeset
   768
  // cache management logic if the caches can grow instead of just
86e9e4b25bdf 6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents: 3822
diff changeset
   769
  // going from NULL to non-NULL.
86e9e4b25bdf 6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents: 3822
diff changeset
   770
  bool idnum_can_increment() const      { return has_been_redefined(); }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   771
  jmethodID* methods_jmethod_ids_acquire() const
489c9b5090e2 Initial load
duke
parents:
diff changeset
   772
         { return (jmethodID*)OrderAccess::load_ptr_acquire(&_methods_jmethod_ids); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   773
  void release_set_methods_jmethod_ids(jmethodID* jmeths)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   774
         { OrderAccess::release_store_ptr(&_methods_jmethod_ids, jmeths); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   775
489c9b5090e2 Initial load
duke
parents:
diff changeset
   776
  int* methods_cached_itable_indices_acquire() const
489c9b5090e2 Initial load
duke
parents:
diff changeset
   777
         { return (int*)OrderAccess::load_ptr_acquire(&_methods_cached_itable_indices); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   778
  void release_set_methods_cached_itable_indices(int* indices)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   779
         { OrderAccess::release_store_ptr(&_methods_cached_itable_indices, indices); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   780
489c9b5090e2 Initial load
duke
parents:
diff changeset
   781
  inline typeArrayOop get_method_annotations_from(int idnum, objArrayOop annos);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   782
  void set_annotations(objArrayOop md, objArrayOop* md_p)  { oop_store_without_check((oop*)md_p, (oop)md); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   783
  void set_methods_annotations_of(int idnum, typeArrayOop anno, objArrayOop* md_p);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   784
489c9b5090e2 Initial load
duke
parents:
diff changeset
   785
  // Offsets for memory management
489c9b5090e2 Initial load
duke
parents:
diff changeset
   786
  oop* adr_array_klasses() const     { return (oop*)&this->_array_klasses;}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   787
  oop* adr_methods() const           { return (oop*)&this->_methods;}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   788
  oop* adr_method_ordering() const   { return (oop*)&this->_method_ordering;}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   789
  oop* adr_local_interfaces() const  { return (oop*)&this->_local_interfaces;}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   790
  oop* adr_transitive_interfaces() const  { return (oop*)&this->_transitive_interfaces;}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   791
  oop* adr_fields() const            { return (oop*)&this->_fields;}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   792
  oop* adr_constants() const         { return (oop*)&this->_constants;}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   793
  oop* adr_class_loader() const      { return (oop*)&this->_class_loader;}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   794
  oop* adr_protection_domain() const { return (oop*)&this->_protection_domain;}
1550
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 1388
diff changeset
   795
  oop* adr_host_klass() const        { return (oop*)&this->_host_klass;}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   796
  oop* adr_signers() const           { return (oop*)&this->_signers;}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   797
  oop* adr_source_file_name() const  { return (oop*)&this->_source_file_name;}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   798
  oop* adr_source_debug_extension() const { return (oop*)&this->_source_debug_extension;}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   799
  oop* adr_inner_classes() const     { return (oop*)&this->_inner_classes;}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   800
  oop* adr_implementors() const      { return (oop*)&this->_implementors[0];}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   801
  oop* adr_generic_signature() const { return (oop*)&this->_generic_signature;}
2570
ecc7862946d4 6655646: dynamic languages need dynamically linked call sites
jrose
parents: 2343
diff changeset
   802
  oop* adr_bootstrap_method() const  { return (oop*)&this->_bootstrap_method;}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   803
  oop* adr_methods_jmethod_ids() const             { return (oop*)&this->_methods_jmethod_ids;}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   804
  oop* adr_methods_cached_itable_indices() const   { return (oop*)&this->_methods_cached_itable_indices;}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   805
  oop* adr_class_annotations() const   { return (oop*)&this->_class_annotations;}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   806
  oop* adr_fields_annotations() const  { return (oop*)&this->_fields_annotations;}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   807
  oop* adr_methods_annotations() const { return (oop*)&this->_methods_annotations;}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   808
  oop* adr_methods_parameter_annotations() const { return (oop*)&this->_methods_parameter_annotations;}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   809
  oop* adr_methods_default_annotations() const { return (oop*)&this->_methods_default_annotations;}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   810
489c9b5090e2 Initial load
duke
parents:
diff changeset
   811
  // Static methods that are used to implement member methods where an exposed this pointer
489c9b5090e2 Initial load
duke
parents:
diff changeset
   812
  // is needed due to possible GCs
489c9b5090e2 Initial load
duke
parents:
diff changeset
   813
  static bool link_class_impl                           (instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   814
  static bool verify_code                               (instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   815
  static void initialize_impl                           (instanceKlassHandle this_oop, TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   816
  static void eager_initialize_impl                     (instanceKlassHandle this_oop);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   817
  static void set_initialization_state_and_notify_impl  (instanceKlassHandle this_oop, ClassState state, TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   818
  static void call_class_initializer_impl               (instanceKlassHandle this_oop, TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   819
  static klassOop array_klass_impl                      (instanceKlassHandle this_oop, bool or_null, int n, TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   820
  static void do_local_static_fields_impl               (instanceKlassHandle this_oop, void f(fieldDescriptor* fd, TRAPS), TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   821
  /* jni_id_for_impl for jfieldID only */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   822
  static JNIid* jni_id_for_impl                         (instanceKlassHandle this_oop, int offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   823
489c9b5090e2 Initial load
duke
parents:
diff changeset
   824
  // Returns the array class for the n'th dimension
489c9b5090e2 Initial load
duke
parents:
diff changeset
   825
  klassOop array_klass_impl(bool or_null, int n, TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   826
489c9b5090e2 Initial load
duke
parents:
diff changeset
   827
  // Returns the array class with this class as element type
489c9b5090e2 Initial load
duke
parents:
diff changeset
   828
  klassOop array_klass_impl(bool or_null, TRAPS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   829
489c9b5090e2 Initial load
duke
parents:
diff changeset
   830
public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   831
  // sharing support
489c9b5090e2 Initial load
duke
parents:
diff changeset
   832
  virtual void remove_unshareable_info();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   833
  void field_names_and_sigs_iterate(OopClosure* closure);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   834
489c9b5090e2 Initial load
duke
parents:
diff changeset
   835
  // jvm support
489c9b5090e2 Initial load
duke
parents:
diff changeset
   836
  jint compute_modifier_flags(TRAPS) const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   837
489c9b5090e2 Initial load
duke
parents:
diff changeset
   838
public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   839
  // JVMTI support
489c9b5090e2 Initial load
duke
parents:
diff changeset
   840
  jint jvmti_class_status() const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   841
489c9b5090e2 Initial load
duke
parents:
diff changeset
   842
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   843
 public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   844
  // Printing
489c9b5090e2 Initial load
duke
parents:
diff changeset
   845
  void oop_print_on      (oop obj, outputStream* st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   846
  void oop_print_value_on(oop obj, outputStream* st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   847
489c9b5090e2 Initial load
duke
parents:
diff changeset
   848
  void print_dependent_nmethods(bool verbose = false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   849
  bool is_dependent_nmethod(nmethod* nm);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   850
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   851
489c9b5090e2 Initial load
duke
parents:
diff changeset
   852
 public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   853
  // Verification
489c9b5090e2 Initial load
duke
parents:
diff changeset
   854
  const char* internal_name() const;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   855
  void oop_verify_on(oop obj, outputStream* st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   856
489c9b5090e2 Initial load
duke
parents:
diff changeset
   857
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   858
  static void verify_class_klass_nonstatic_oop_maps(klassOop k) PRODUCT_RETURN;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   859
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   860
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   861
489c9b5090e2 Initial load
duke
parents:
diff changeset
   862
inline methodOop instanceKlass::method_at_vtable(int index)  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   863
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   864
  assert(index >= 0, "valid vtable index");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   865
  if (DebugVtables) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   866
    verify_vtable_index(index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   867
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   868
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   869
  vtableEntry* ve = (vtableEntry*)start_of_vtable();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   870
  return ve[index].method();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   871
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   872
489c9b5090e2 Initial load
duke
parents:
diff changeset
   873
inline typeArrayOop instanceKlass::get_method_annotations_from(int idnum, objArrayOop annos) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   874
  if (annos == NULL || annos->length() <= idnum) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   875
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   876
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   877
  return typeArrayOop(annos->obj_at(idnum));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   878
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   879
489c9b5090e2 Initial load
duke
parents:
diff changeset
   880
// for adding methods
489c9b5090e2 Initial load
duke
parents:
diff changeset
   881
// UNSET_IDNUM return means no more ids available
489c9b5090e2 Initial load
duke
parents:
diff changeset
   882
inline u2 instanceKlass::next_method_idnum() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   883
  if (_idnum_allocated_count == constMethodOopDesc::MAX_IDNUM) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   884
    return constMethodOopDesc::UNSET_IDNUM; // no more ids available
489c9b5090e2 Initial load
duke
parents:
diff changeset
   885
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   886
    return _idnum_allocated_count++;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   887
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   888
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   889
489c9b5090e2 Initial load
duke
parents:
diff changeset
   890
489c9b5090e2 Initial load
duke
parents:
diff changeset
   891
/* JNIid class for jfieldIDs only */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   892
class JNIid: public CHeapObj {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   893
  friend class VMStructs;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   894
 private:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   895
  klassOop           _holder;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   896
  JNIid*             _next;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   897
  int                _offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   898
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   899
  bool               _is_static_field_id;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   900
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   901
489c9b5090e2 Initial load
duke
parents:
diff changeset
   902
 public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   903
  // Accessors
489c9b5090e2 Initial load
duke
parents:
diff changeset
   904
  klassOop holder() const         { return _holder; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   905
  int offset() const              { return _offset; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   906
  JNIid* next()                   { return _next; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   907
  // Constructor
489c9b5090e2 Initial load
duke
parents:
diff changeset
   908
  JNIid(klassOop holder, int offset, JNIid* next);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   909
  // Identifier lookup
489c9b5090e2 Initial load
duke
parents:
diff changeset
   910
  JNIid* find(int offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   911
489c9b5090e2 Initial load
duke
parents:
diff changeset
   912
  // Garbage collection support
489c9b5090e2 Initial load
duke
parents:
diff changeset
   913
  oop* holder_addr() { return (oop*)&_holder; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   914
  void oops_do(OopClosure* f);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   915
  static void deallocate(JNIid* id);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   916
  // Debugging
489c9b5090e2 Initial load
duke
parents:
diff changeset
   917
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   918
  bool is_static_field_id() const { return _is_static_field_id; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   919
  void set_is_static_field_id()   { _is_static_field_id = true; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   920
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   921
  void verify(klassOop holder);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   922
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   923
489c9b5090e2 Initial load
duke
parents:
diff changeset
   924
489c9b5090e2 Initial load
duke
parents:
diff changeset
   925
// If breakpoints are more numerous than just JVMTI breakpoints,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   926
// consider compressing this data structure.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   927
// It is currently a simple linked list defined in methodOop.hpp.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   928
489c9b5090e2 Initial load
duke
parents:
diff changeset
   929
class BreakpointInfo;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   930
489c9b5090e2 Initial load
duke
parents:
diff changeset
   931
489c9b5090e2 Initial load
duke
parents:
diff changeset
   932
// A collection point for interesting information about the previous
489c9b5090e2 Initial load
duke
parents:
diff changeset
   933
// version(s) of an instanceKlass. This class uses weak references to
489c9b5090e2 Initial load
duke
parents:
diff changeset
   934
// the information so that the information may be collected as needed
220
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
   935
// by the system. If the information is shared, then a regular
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
   936
// reference must be used because a weak reference would be seen as
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
   937
// collectible. A GrowableArray of PreviousVersionNodes is attached
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   938
// to the instanceKlass as needed. See PreviousVersionWalker below.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   939
class PreviousVersionNode : public CHeapObj {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   940
 private:
220
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
   941
  // A shared ConstantPool is never collected so we'll always have
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
   942
  // a reference to it so we can update items in the cache. We'll
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
   943
  // have a weak reference to a non-shared ConstantPool until all
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
   944
  // of the methods (EMCP or obsolete) have been collected; the
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
   945
  // non-shared ConstantPool becomes collectible at that point.
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
   946
  jobject _prev_constant_pool;  // regular or weak reference
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
   947
  bool    _prev_cp_is_weak;     // true if not a shared ConstantPool
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
   948
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   949
  // If the previous version of the instanceKlass doesn't have any
489c9b5090e2 Initial load
duke
parents:
diff changeset
   950
  // EMCP methods, then _prev_EMCP_methods will be NULL. If all the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   951
  // EMCP methods have been collected, then _prev_EMCP_methods can
489c9b5090e2 Initial load
duke
parents:
diff changeset
   952
  // have a length of zero.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   953
  GrowableArray<jweak>* _prev_EMCP_methods;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   954
489c9b5090e2 Initial load
duke
parents:
diff changeset
   955
public:
220
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
   956
  PreviousVersionNode(jobject prev_constant_pool, bool prev_cp_is_weak,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   957
    GrowableArray<jweak>* prev_EMCP_methods);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   958
  ~PreviousVersionNode();
220
e6ef4818c49d 6497639: 4/3 Profiling Swing application caused JVM crash
dcubed
parents: 1
diff changeset
   959
  jobject prev_constant_pool() const {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   960
    return _prev_constant_pool;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   961
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   962
  GrowableArray<jweak>* prev_EMCP_methods() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   963
    return _prev_EMCP_methods;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   964
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   965
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   966
489c9b5090e2 Initial load
duke
parents:
diff changeset
   967
489c9b5090e2 Initial load
duke
parents:
diff changeset
   968
// A Handle-ized version of PreviousVersionNode.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   969
class PreviousVersionInfo : public ResourceObj {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   970
 private:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   971
  constantPoolHandle   _prev_constant_pool_handle;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   972
  // If the previous version of the instanceKlass doesn't have any
489c9b5090e2 Initial load
duke
parents:
diff changeset
   973
  // EMCP methods, then _prev_EMCP_methods will be NULL. Since the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   974
  // methods cannot be collected while we hold a handle,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   975
  // _prev_EMCP_methods should never have a length of zero.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   976
  GrowableArray<methodHandle>* _prev_EMCP_method_handles;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   977
489c9b5090e2 Initial load
duke
parents:
diff changeset
   978
public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   979
  PreviousVersionInfo(PreviousVersionNode *pv_node);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   980
  ~PreviousVersionInfo();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   981
  constantPoolHandle prev_constant_pool_handle() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   982
    return _prev_constant_pool_handle;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   983
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   984
  GrowableArray<methodHandle>* prev_EMCP_method_handles() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   985
    return _prev_EMCP_method_handles;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   986
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   987
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   988
489c9b5090e2 Initial load
duke
parents:
diff changeset
   989
489c9b5090e2 Initial load
duke
parents:
diff changeset
   990
// Helper object for walking previous versions. This helper cleans up
489c9b5090e2 Initial load
duke
parents:
diff changeset
   991
// the Handles that it allocates when the helper object is destroyed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   992
// The PreviousVersionInfo object returned by next_previous_version()
489c9b5090e2 Initial load
duke
parents:
diff changeset
   993
// is only valid until a subsequent call to next_previous_version() or
489c9b5090e2 Initial load
duke
parents:
diff changeset
   994
// the helper object is destroyed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   995
class PreviousVersionWalker : public StackObj {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   996
 private:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   997
  GrowableArray<PreviousVersionNode *>* _previous_versions;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   998
  int                                   _current_index;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   999
  // Fields for cleaning up when we are done walking the previous versions:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1000
  // A HandleMark for the PreviousVersionInfo handles:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1001
  HandleMark                            _hm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1002
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1003
  // It would be nice to have a ResourceMark field in this helper also,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1004
  // but the ResourceMark code says to be careful to delete handles held
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1005
  // in GrowableArrays _before_ deleting the GrowableArray. Since we
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1006
  // can't guarantee the order in which the fields are destroyed, we
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1007
  // have to let the creator of the PreviousVersionWalker object do
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1008
  // the right thing. Also, adding a ResourceMark here causes an
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1009
  // include loop.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1010
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1011
  // A pointer to the current info object so we can handle the deletes.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1012
  PreviousVersionInfo *                 _current_p;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1013
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1014
 public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1015
  PreviousVersionWalker(instanceKlass *ik);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1016
  ~PreviousVersionWalker();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1017
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1018
  // Return the interesting information for the next previous version
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1019
  // of the klass. Returns NULL if there are no more previous versions.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1020
  PreviousVersionInfo* next_previous_version();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1021
};