13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
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
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 "classfile/altHashing.hpp"
27 #include "classfile/javaClasses.inline.hpp"
28 #include "gc/shared/collectedHeap.inline.hpp"
29 #include "gc/shared/gc_globals.hpp"
30 #include "memory/resourceArea.hpp"
31 #include "memory/universe.hpp"
32 #include "oops/access.inline.hpp"
33 #include "oops/compressedOops.inline.hpp"
34 #include "oops/oop.inline.hpp"
35 #include "oops/verifyOopClosure.hpp"
36 #include "runtime/handles.inline.hpp"
37 #include "runtime/javaThread.hpp"
38 #include "utilities/macros.hpp"
39
40 void oopDesc::print_on(outputStream* st) const {
41 if (*((juint*)this) == badHeapWordVal) {
42 st->print("BAD WORD");
43 } else if (*((juint*)this) == badMetaWordVal) {
44 st->print("BAD META WORD");
45 } else {
46 klass()->oop_print_on(cast_to_oop(this), st);
47 }
48 }
49
50 void oopDesc::print_address_on(outputStream* st) const {
51 st->print("{" INTPTR_FORMAT "}", p2i(this));
52
53 }
54
55 void oopDesc::print() { print_on(tty); }
56
129 }
130
131 VerifyOopClosure VerifyOopClosure::verify_oop;
132
133 template <class T> void VerifyOopClosure::do_oop_work(T* p) {
134 oop obj = RawAccess<>::oop_load(p);
135 guarantee(oopDesc::is_oop_or_null(obj), "invalid oop: " INTPTR_FORMAT, p2i((oopDesc*) obj));
136 }
137
138 void VerifyOopClosure::do_oop(oop* p) { VerifyOopClosure::do_oop_work(p); }
139 void VerifyOopClosure::do_oop(narrowOop* p) { VerifyOopClosure::do_oop_work(p); }
140
141 // type test operations that doesn't require inclusion of oop.inline.hpp.
142 bool oopDesc::is_instance_noinline() const { return is_instance(); }
143 bool oopDesc::is_instanceRef_noinline() const { return is_instanceRef(); }
144 bool oopDesc::is_stackChunk_noinline() const { return is_stackChunk(); }
145 bool oopDesc::is_array_noinline() const { return is_array(); }
146 bool oopDesc::is_objArray_noinline() const { return is_objArray(); }
147 bool oopDesc::is_typeArray_noinline() const { return is_typeArray(); }
148
149 bool oopDesc::has_klass_gap() {
150 // Only has a klass gap when compressed class pointers are used.
151 return UseCompressedClassPointers;
152 }
153
154 #if INCLUDE_CDS_JAVA_HEAP
155 void oopDesc::set_narrow_klass(narrowKlass nk) {
156 assert(DumpSharedSpaces, "Used by CDS only. Do not abuse!");
157 assert(UseCompressedClassPointers, "must be");
158 _metadata._compressed_klass = nk;
159 }
160 #endif
161
162 void* oopDesc::load_klass_raw(oop obj) {
163 if (UseCompressedClassPointers) {
164 narrowKlass narrow_klass = obj->_metadata._compressed_klass;
165 if (narrow_klass == 0) return NULL;
166 return (void*)CompressedKlassPointers::decode_raw(narrow_klass);
167 } else {
168 return obj->_metadata._klass;
169 }
170 }
171
172 void* oopDesc::load_oop_raw(oop obj, int offset) {
173 uintptr_t addr = (uintptr_t)(void*)obj + (uint)offset;
174 if (UseCompressedOops) {
175 narrowOop narrow_oop = *(narrowOop*)addr;
176 if (CompressedOops::is_null(narrow_oop)) return NULL;
177 return (void*)CompressedOops::decode_raw(narrow_oop);
178 } else {
179 return *(void**)addr;
180 }
181 }
182
183 oop oopDesc::obj_field_acquire(int offset) const { return HeapAccess<MO_ACQUIRE>::oop_load_at(as_oop(), offset); }
184
185 void oopDesc::obj_field_put_raw(int offset, oop value) { RawAccess<>::oop_store_at(as_oop(), offset, value); }
186 void oopDesc::release_obj_field_put(int offset, oop value) { HeapAccess<MO_RELEASE>::oop_store_at(as_oop(), offset, value); }
187 void oopDesc::obj_field_put_volatile(int offset, oop value) { HeapAccess<MO_SEQ_CST>::oop_store_at(as_oop(), offset, value); }
188
189 address oopDesc::address_field(int offset) const { return *field_addr<address>(offset); }
190 address oopDesc::address_field_acquire(int offset) const { return Atomic::load_acquire(field_addr<address>(offset)); }
191
192 void oopDesc::address_field_put(int offset, address value) { *field_addr<address>(offset) = value; }
193 void oopDesc::release_address_field_put(int offset, address value) { Atomic::release_store(field_addr<address>(offset), value); }
194
195 Metadata* oopDesc::metadata_field(int offset) const { return *field_addr<Metadata*>(offset); }
196 void oopDesc::metadata_field_put(int offset, Metadata* value) { *field_addr<Metadata*>(offset) = value; }
197
198 Metadata* oopDesc::metadata_field_acquire(int offset) const { return Atomic::load_acquire(field_addr<Metadata*>(offset)); }
199 void oopDesc::release_metadata_field_put(int offset, Metadata* value) { Atomic::release_store(field_addr<Metadata*>(offset), value); }
200
201 jbyte oopDesc::byte_field_acquire(int offset) const { return Atomic::load_acquire(field_addr<jbyte>(offset)); }
202 void oopDesc::release_byte_field_put(int offset, jbyte value) { Atomic::release_store(field_addr<jbyte>(offset), value); }
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13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
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
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 "classfile/altHashing.hpp"
27 #include "classfile/javaClasses.inline.hpp"
28 #include "gc/shared/collectedHeap.inline.hpp"
29 #include "gc/shared/gc_globals.hpp"
30 #include "memory/resourceArea.hpp"
31 #include "memory/universe.hpp"
32 #include "oops/access.inline.hpp"
33 #include "oops/compressedKlass.inline.hpp"
34 #include "oops/compressedOops.inline.hpp"
35 #include "oops/oop.inline.hpp"
36 #include "oops/verifyOopClosure.hpp"
37 #include "runtime/handles.inline.hpp"
38 #include "runtime/interfaceSupport.inline.hpp"
39 #include "runtime/javaThread.hpp"
40 #include "utilities/macros.hpp"
41
42 void oopDesc::print_on(outputStream* st) const {
43 if (*((juint*)this) == badHeapWordVal) {
44 st->print("BAD WORD");
45 } else if (*((juint*)this) == badMetaWordVal) {
46 st->print("BAD META WORD");
47 } else {
48 klass()->oop_print_on(cast_to_oop(this), st);
49 }
50 }
51
52 void oopDesc::print_address_on(outputStream* st) const {
53 st->print("{" INTPTR_FORMAT "}", p2i(this));
54
55 }
56
57 void oopDesc::print() { print_on(tty); }
58
131 }
132
133 VerifyOopClosure VerifyOopClosure::verify_oop;
134
135 template <class T> void VerifyOopClosure::do_oop_work(T* p) {
136 oop obj = RawAccess<>::oop_load(p);
137 guarantee(oopDesc::is_oop_or_null(obj), "invalid oop: " INTPTR_FORMAT, p2i((oopDesc*) obj));
138 }
139
140 void VerifyOopClosure::do_oop(oop* p) { VerifyOopClosure::do_oop_work(p); }
141 void VerifyOopClosure::do_oop(narrowOop* p) { VerifyOopClosure::do_oop_work(p); }
142
143 // type test operations that doesn't require inclusion of oop.inline.hpp.
144 bool oopDesc::is_instance_noinline() const { return is_instance(); }
145 bool oopDesc::is_instanceRef_noinline() const { return is_instanceRef(); }
146 bool oopDesc::is_stackChunk_noinline() const { return is_stackChunk(); }
147 bool oopDesc::is_array_noinline() const { return is_array(); }
148 bool oopDesc::is_objArray_noinline() const { return is_objArray(); }
149 bool oopDesc::is_typeArray_noinline() const { return is_typeArray(); }
150
151 void* oopDesc::load_klass_raw(oop obj) {
152 // TODO: Remove method altogether and replace with calls to obj->klass() ?
153 // OTOH, we may eventually get rid of locking in header, and then no
154 // longer have to deal with that anymore.
155 #ifdef _LP64
156 return obj->klass();
157 #else
158 return obj->_klass;
159 #endif
160 }
161
162 void* oopDesc::load_oop_raw(oop obj, int offset) {
163 uintptr_t addr = (uintptr_t)(void*)obj + (uint)offset;
164 if (UseCompressedOops) {
165 narrowOop narrow_oop = *(narrowOop*)addr;
166 if (CompressedOops::is_null(narrow_oop)) return NULL;
167 return (void*)CompressedOops::decode_raw(narrow_oop);
168 } else {
169 return *(void**)addr;
170 }
171 }
172
173 #ifdef _LP64
174 JRT_LEAF(narrowKlass, oopDesc::load_nklass_runtime(oopDesc* o))
175 assert(o != NULL, "null-check");
176 oop obj = oop(o);
177 assert(oopDesc::is_oop(obj), "need a valid oop here: " PTR_FORMAT, p2i(o));
178 markWord header = obj->mark();
179 if (!header.is_neutral()) {
180 header = ObjectSynchronizer::stable_mark(obj);
181 }
182 assert(header.is_neutral(), "expect neutral header here");
183 narrowKlass nklass = header.narrow_klass();
184 return nklass;
185 JRT_END
186 #endif
187
188 oop oopDesc::obj_field_acquire(int offset) const { return HeapAccess<MO_ACQUIRE>::oop_load_at(as_oop(), offset); }
189
190 void oopDesc::obj_field_put_raw(int offset, oop value) { RawAccess<>::oop_store_at(as_oop(), offset, value); }
191 void oopDesc::release_obj_field_put(int offset, oop value) { HeapAccess<MO_RELEASE>::oop_store_at(as_oop(), offset, value); }
192 void oopDesc::obj_field_put_volatile(int offset, oop value) { HeapAccess<MO_SEQ_CST>::oop_store_at(as_oop(), offset, value); }
193
194 address oopDesc::address_field(int offset) const { return *field_addr<address>(offset); }
195 address oopDesc::address_field_acquire(int offset) const { return Atomic::load_acquire(field_addr<address>(offset)); }
196
197 void oopDesc::address_field_put(int offset, address value) { *field_addr<address>(offset) = value; }
198 void oopDesc::release_address_field_put(int offset, address value) { Atomic::release_store(field_addr<address>(offset), value); }
199
200 Metadata* oopDesc::metadata_field(int offset) const { return *field_addr<Metadata*>(offset); }
201 void oopDesc::metadata_field_put(int offset, Metadata* value) { *field_addr<Metadata*>(offset) = value; }
202
203 Metadata* oopDesc::metadata_field_acquire(int offset) const { return Atomic::load_acquire(field_addr<Metadata*>(offset)); }
204 void oopDesc::release_metadata_field_put(int offset, Metadata* value) { Atomic::release_store(field_addr<Metadata*>(offset), value); }
205
206 jbyte oopDesc::byte_field_acquire(int offset) const { return Atomic::load_acquire(field_addr<jbyte>(offset)); }
207 void oopDesc::release_byte_field_put(int offset, jbyte value) { Atomic::release_store(field_addr<jbyte>(offset), value); }
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