Mercurial > hg > truffle
annotate src/share/vm/runtime/fieldDescriptor.hpp @ 1721:413ad0331a0c
6977924: Changes for 6975078 produce build error with certain gcc versions
Summary: The changes introduced for 6975078 assign badHeapOopVal to the _allocation field in the ResourceObj class. In 32 bit linux builds with certain versions of gcc this assignment will be flagged as an error while compiling allocation.cpp. In 32 bit builds the constant value badHeapOopVal (which is cast to an intptr_t) is negative. The _allocation field is typed as an unsigned intptr_t and gcc catches this as an error.
Reviewed-by: jcoomes, ysr, phh
author | johnc |
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date | Wed, 18 Aug 2010 10:59:06 -0700 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
rev | line source |
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0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 // A fieldDescriptor describes the attributes of a single field (instance or class variable). | |
26 // It needs the class constant pool to work (because it only holds indices into the pool | |
27 // rather than the actual info). | |
28 | |
29 class fieldDescriptor VALUE_OBJ_CLASS_SPEC { | |
30 private: | |
31 AccessFlags _access_flags; | |
32 int _name_index; | |
33 int _signature_index; | |
34 int _initial_value_index; | |
35 int _offset; | |
36 int _generic_signature_index; | |
37 int _index; // index into fields() array | |
38 constantPoolHandle _cp; | |
39 | |
40 public: | |
41 symbolOop name() const { return _cp->symbol_at(_name_index); } | |
42 symbolOop signature() const { return _cp->symbol_at(_signature_index); } | |
43 klassOop field_holder() const { return _cp->pool_holder(); } | |
44 constantPoolOop constants() const { return _cp(); } | |
45 AccessFlags access_flags() const { return _access_flags; } | |
46 oop loader() const; | |
47 // Offset (in words) of field from start of instanceOop / klassOop | |
48 int offset() const { return _offset; } | |
49 symbolOop generic_signature() const { return (_generic_signature_index > 0 ? _cp->symbol_at(_generic_signature_index) : (symbolOop)NULL); } | |
50 int index() const { return _index; } | |
51 typeArrayOop annotations() const; | |
52 | |
53 // Initial field value | |
54 bool has_initial_value() const { return _initial_value_index != 0; } | |
55 constantTag initial_value_tag() const; // The tag will return true on one of is_int(), is_long(), is_single(), is_double() | |
56 jint int_initial_value() const; | |
57 jlong long_initial_value() const; | |
58 jfloat float_initial_value() const; | |
59 jdouble double_initial_value() const; | |
60 oop string_initial_value(TRAPS) const; | |
61 | |
62 // Field signature type | |
63 BasicType field_type() const { return FieldType::basic_type(signature()); } | |
64 | |
65 // Access flags | |
66 bool is_public() const { return _access_flags.is_public(); } | |
67 bool is_private() const { return _access_flags.is_private(); } | |
68 bool is_protected() const { return _access_flags.is_protected(); } | |
69 bool is_package_private() const { return !is_public() && !is_private() && !is_protected(); } | |
70 | |
71 bool is_static() const { return _access_flags.is_static(); } | |
72 bool is_final() const { return _access_flags.is_final(); } | |
73 bool is_volatile() const { return _access_flags.is_volatile(); } | |
74 bool is_transient() const { return _access_flags.is_transient(); } | |
75 | |
76 bool is_synthetic() const { return _access_flags.is_synthetic(); } | |
77 | |
78 bool is_field_access_watched() const { return _access_flags.is_field_access_watched(); } | |
79 bool is_field_modification_watched() const | |
80 { return _access_flags.is_field_modification_watched(); } | |
81 void set_is_field_access_watched(const bool value) | |
82 { _access_flags.set_is_field_access_watched(value); } | |
83 void set_is_field_modification_watched(const bool value) | |
84 { _access_flags.set_is_field_modification_watched(value); } | |
85 | |
86 // Initialization | |
87 void initialize(klassOop k, int index); | |
88 | |
89 // Print | |
90 void print_on(outputStream* st) const PRODUCT_RETURN; | |
91 void print_on_for(outputStream* st, oop obj) PRODUCT_RETURN; | |
92 }; |