jdk8-mips64-public/hotspot: src/share/vm/runtime/fieldDescriptor.hpp@b92c45f2bc75

7016023: Enable building ARM and PPC from src/closed repository
Reviewed-by: dholmes, bdelsart

     1 /*

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

     4  *

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

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

     7  * published by the Free Software Foundation.

     8  *

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

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

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

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

    13  * accompanied this code).

    14  *

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

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

    18  *

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

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    25 #ifndef SHARE_VM_RUNTIME_FIELDDESCRIPTOR_HPP

    26 #define SHARE_VM_RUNTIME_FIELDDESCRIPTOR_HPP

    28 #include "oops/constantPoolOop.hpp"

    29 #include "oops/klassOop.hpp"

    30 #include "oops/oop.inline.hpp"

    31 #include "oops/symbol.hpp"

    32 #include "runtime/fieldType.hpp"

    33 #include "utilities/accessFlags.hpp"

    34 #include "utilities/constantTag.hpp"

    36 // A fieldDescriptor describes the attributes of a single field (instance or class variable).

    37 // It needs the class constant pool to work (because it only holds indices into the pool

    38 // rather than the actual info).

    40 class fieldDescriptor VALUE_OBJ_CLASS_SPEC {

    41  private:

    42   AccessFlags         _access_flags;

    43   int                 _name_index;

    44   int                 _signature_index;

    45   int                 _initial_value_index;

    46   int                 _offset;

    47   int                 _generic_signature_index;

    48   int                 _index; // index into fields() array

    49   constantPoolHandle  _cp;

    51  public:

    52   Symbol* name() const                 { return _cp->symbol_at(_name_index); }

    53   Symbol* signature() const            { return _cp->symbol_at(_signature_index); }

    54   klassOop field_holder() const        { return _cp->pool_holder(); }

    55   constantPoolOop constants() const    { return _cp(); }

    56   AccessFlags access_flags() const     { return _access_flags; }

    57   oop loader() const;

    58   // Offset (in words) of field from start of instanceOop / klassOop

    59   int offset() const                   { return _offset; }

    60   Symbol* generic_signature() const    { return (_generic_signature_index > 0 ? _cp->symbol_at(_generic_signature_index) : (Symbol*)NULL); }

    61   int index() const                    { return _index; }

    62   typeArrayOop annotations() const;

    64   // Initial field value

    65   bool has_initial_value() const          { return _initial_value_index != 0; }

    66   constantTag initial_value_tag() const;  // The tag will return true on one of is_int(), is_long(), is_single(), is_double()

    67   jint        int_initial_value() const;

    68   jlong       long_initial_value() const;

    69   jfloat      float_initial_value() const;

    70   jdouble     double_initial_value() const;

    71   oop         string_initial_value(TRAPS) const;

    73   // Field signature type

    74   BasicType field_type() const            { return FieldType::basic_type(signature()); }

    76   // Access flags

    77   bool is_public() const                  { return _access_flags.is_public(); }

    78   bool is_private() const                 { return _access_flags.is_private(); }

    79   bool is_protected() const               { return _access_flags.is_protected(); }

    80   bool is_package_private() const         { return !is_public() && !is_private() && !is_protected(); }

    82   bool is_static() const                  { return _access_flags.is_static(); }

    83   bool is_final() const                   { return _access_flags.is_final(); }

    84   bool is_volatile() const                { return _access_flags.is_volatile(); }

    85   bool is_transient() const               { return _access_flags.is_transient(); }

    87   bool is_synthetic() const               { return _access_flags.is_synthetic(); }

    89   bool is_field_access_watched() const    { return _access_flags.is_field_access_watched(); }

    90   bool is_field_modification_watched() const

    91                                           { return _access_flags.is_field_modification_watched(); }

    92   void set_is_field_access_watched(const bool value)

    93                                           { _access_flags.set_is_field_access_watched(value); }

    94   void set_is_field_modification_watched(const bool value)

    95                                           { _access_flags.set_is_field_modification_watched(value); }

    97   // Initialization

    98   void initialize(klassOop k, int index);

   100   // Print

   101   void print_on(outputStream* st) const         PRODUCT_RETURN;

   102   void print_on_for(outputStream* st, oop obj)  PRODUCT_RETURN;

   103 };

   105 #endif // SHARE_VM_RUNTIME_FIELDDESCRIPTOR_HPP

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