19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "ci/ciField.hpp"
27 #include "ci/ciValueKlass.hpp"
28 #include "oops/fieldStreams.hpp"
29 #include "oops/valueKlass.hpp"
30
31 int ciValueKlass::compute_field_index_map() {
32 assert(is_loaded(), "value class must be loaded to compute mapping of field indeces");
33
34 if (_field_index_map != NULL) {
35 return _field_index_map->length();
36 }
37
38 Arena* arena = CURRENT_ENV->arena();
39 guarantee(has_nonstatic_fields(), "value types without fields currently not supported");
40
41 // FIXME: Once it is possible to construct class hierarchies with value types.
42 assert(!super()->has_nonstatic_fields(), "a value type must not inherit fields from its superclass");
43
44 _field_index_map = new (arena) GrowableArray<int>(arena, nof_declared_nonstatic_fields(), 0, 0);
45 ValueKlass* vklass = ValueKlass::cast(get_Klass());
46 for (JavaFieldStream fs(vklass); !fs.done(); fs.next()) {
47 if (fs.access_flags().is_static()) {
48 continue;
49 }
50 _field_index_map->append(fs.field_descriptor().index());
51 }
52 return _field_index_map->length();
53 }
54
55 // Number of value type fields
56 int ciValueKlass::field_count() {
57 if (this == ciEnv::current()->___Value_klass()) {
58 return 0;
59 }
60 if (_field_index_map == NULL) {
61 return compute_field_index_map();
62 } else {
63 return _field_index_map->length();
64 }
65 }
66
67 // Size of value type fields in words
68 int ciValueKlass::field_size() {
69 int size = 0;
70 for (int i = 0; i < field_count(); ++i) {
71 size += field_type_by_index(i)->size();
72 }
73 return size;
74 }
75
76 // Returns the index of the field with the given offset. If the field at 'offset'
77 // belongs to a flattened value type field, return the index of the field
78 // in the flattened value type.
79 int ciValueKlass::field_index_by_offset(int offset) {
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "ci/ciField.hpp"
27 #include "ci/ciValueKlass.hpp"
28 #include "oops/fieldStreams.hpp"
29 #include "oops/valueKlass.hpp"
30
31 int ciValueKlass::compute_field_index_map() {
32 assert(is_loaded(), "value class must be loaded to compute mapping of field indeces");
33
34 if (_field_index_map != NULL) {
35 return _field_index_map->length();
36 }
37
38 Arena* arena = CURRENT_ENV->arena();
39 _field_index_map = new (arena) GrowableArray<int>(arena, nof_declared_nonstatic_fields(), 0, 0);
40 if (!has_nonstatic_fields()) {
41 return 0;
42 }
43
44 // FIXME: Once it is possible to construct class hierarchies with value types.
45 assert(!super()->has_nonstatic_fields(), "a value type must not inherit fields from its superclass");
46
47 ValueKlass* vklass = ValueKlass::cast(get_Klass());
48 for (JavaFieldStream fs(vklass); !fs.done(); fs.next()) {
49 if (fs.access_flags().is_static()) {
50 continue;
51 }
52 _field_index_map->append(fs.field_descriptor().index());
53 }
54 return _field_index_map->length();
55 }
56
57 // Number of value type fields
58 int ciValueKlass::field_count() {
59 if (_field_index_map == NULL) {
60 return compute_field_index_map();
61 } else {
62 return _field_index_map->length();
63 }
64 }
65
66 // Size of value type fields in words
67 int ciValueKlass::field_size() {
68 int size = 0;
69 for (int i = 0; i < field_count(); ++i) {
70 size += field_type_by_index(i)->size();
71 }
72 return size;
73 }
74
75 // Returns the index of the field with the given offset. If the field at 'offset'
76 // belongs to a flattened value type field, return the index of the field
77 // in the flattened value type.
78 int ciValueKlass::field_index_by_offset(int offset) {
|