60 Atomic::store(&_mark, m);
61 }
62
63 void oopDesc::set_mark(HeapWord* mem, markWord m) {
64 *(markWord*)(((char*)mem) + mark_offset_in_bytes()) = m;
65 }
66
67 void oopDesc::release_set_mark(markWord m) {
68 Atomic::release_store(&_mark, m);
69 }
70
71 markWord oopDesc::cas_set_mark(markWord new_mark, markWord old_mark) {
72 return Atomic::cmpxchg(&_mark, old_mark, new_mark);
73 }
74
75 markWord oopDesc::cas_set_mark(markWord new_mark, markWord old_mark, atomic_memory_order order) {
76 return Atomic::cmpxchg(&_mark, old_mark, new_mark, order);
77 }
78
79 void oopDesc::init_mark() {
80 set_mark(markWord::prototype());
81 }
82
83 Klass* oopDesc::klass() const {
84 if (UseCompressedClassPointers) {
85 return CompressedKlassPointers::decode_not_null(_metadata._compressed_klass);
86 } else {
87 return _metadata._klass;
88 }
89 }
90
91 Klass* oopDesc::klass_or_null() const {
92 if (UseCompressedClassPointers) {
93 return CompressedKlassPointers::decode(_metadata._compressed_klass);
94 } else {
95 return _metadata._klass;
96 }
97 }
98
99 Klass* oopDesc::klass_or_null_acquire() const {
100 if (UseCompressedClassPointers) {
191 // a concurrent change.
192 assert((s == klass->oop_size(this)) ||
193 (Universe::is_gc_active() && is_objArray() && is_forwarded() && (get_UseParallelGC() || get_UseG1GC())),
194 "wrong array object size");
195 } else {
196 // Must be zero, so bite the bullet and take the virtual call.
197 s = klass->oop_size(this);
198 }
199 }
200
201 assert(s > 0, "Oop size must be greater than zero, not %d", s);
202 assert(is_object_aligned(s), "Oop size is not properly aligned: %d", s);
203 return s;
204 }
205
206 bool oopDesc::is_instance() const { return klass()->is_instance_klass(); }
207 bool oopDesc::is_array() const { return klass()->is_array_klass(); }
208 bool oopDesc::is_objArray() const { return klass()->is_objArray_klass(); }
209 bool oopDesc::is_typeArray() const { return klass()->is_typeArray_klass(); }
210
211 void* oopDesc::field_addr(int offset) const { return reinterpret_cast<void*>(cast_from_oop<intptr_t>(as_oop()) + offset); }
212
213 template <class T>
214 T* oopDesc::obj_field_addr(int offset) const { return (T*) field_addr(offset); }
215
216 template <typename T>
217 size_t oopDesc::field_offset(T* p) const { return pointer_delta((void*)p, (void*)this, 1); }
218
219 template <DecoratorSet decorators>
220 inline oop oopDesc::obj_field_access(int offset) const { return HeapAccess<decorators>::oop_load_at(as_oop(), offset); }
221 inline oop oopDesc::obj_field(int offset) const { return HeapAccess<>::oop_load_at(as_oop(), offset); }
222
223 inline void oopDesc::obj_field_put(int offset, oop value) { HeapAccess<>::oop_store_at(as_oop(), offset, value); }
224
225 inline jbyte oopDesc::byte_field(int offset) const { return HeapAccess<>::load_at(as_oop(), offset); }
226 inline void oopDesc::byte_field_put(int offset, jbyte value) { HeapAccess<>::store_at(as_oop(), offset, value); }
227
228 inline jchar oopDesc::char_field(int offset) const { return HeapAccess<>::load_at(as_oop(), offset); }
229 inline void oopDesc::char_field_put(int offset, jchar value) { HeapAccess<>::store_at(as_oop(), offset, value); }
230
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60 Atomic::store(&_mark, m);
61 }
62
63 void oopDesc::set_mark(HeapWord* mem, markWord m) {
64 *(markWord*)(((char*)mem) + mark_offset_in_bytes()) = m;
65 }
66
67 void oopDesc::release_set_mark(markWord m) {
68 Atomic::release_store(&_mark, m);
69 }
70
71 markWord oopDesc::cas_set_mark(markWord new_mark, markWord old_mark) {
72 return Atomic::cmpxchg(&_mark, old_mark, new_mark);
73 }
74
75 markWord oopDesc::cas_set_mark(markWord new_mark, markWord old_mark, atomic_memory_order order) {
76 return Atomic::cmpxchg(&_mark, old_mark, new_mark, order);
77 }
78
79 void oopDesc::init_mark() {
80 set_mark(Klass::default_prototype_header(klass()));
81 }
82
83 Klass* oopDesc::klass() const {
84 if (UseCompressedClassPointers) {
85 return CompressedKlassPointers::decode_not_null(_metadata._compressed_klass);
86 } else {
87 return _metadata._klass;
88 }
89 }
90
91 Klass* oopDesc::klass_or_null() const {
92 if (UseCompressedClassPointers) {
93 return CompressedKlassPointers::decode(_metadata._compressed_klass);
94 } else {
95 return _metadata._klass;
96 }
97 }
98
99 Klass* oopDesc::klass_or_null_acquire() const {
100 if (UseCompressedClassPointers) {
191 // a concurrent change.
192 assert((s == klass->oop_size(this)) ||
193 (Universe::is_gc_active() && is_objArray() && is_forwarded() && (get_UseParallelGC() || get_UseG1GC())),
194 "wrong array object size");
195 } else {
196 // Must be zero, so bite the bullet and take the virtual call.
197 s = klass->oop_size(this);
198 }
199 }
200
201 assert(s > 0, "Oop size must be greater than zero, not %d", s);
202 assert(is_object_aligned(s), "Oop size is not properly aligned: %d", s);
203 return s;
204 }
205
206 bool oopDesc::is_instance() const { return klass()->is_instance_klass(); }
207 bool oopDesc::is_array() const { return klass()->is_array_klass(); }
208 bool oopDesc::is_objArray() const { return klass()->is_objArray_klass(); }
209 bool oopDesc::is_typeArray() const { return klass()->is_typeArray_klass(); }
210
211 bool oopDesc::is_inline_type() const { return mark().is_inline_type(); }
212 #ifdef _LP64
213 bool oopDesc::is_flatArray() const {
214 markWord mrk = mark();
215 return (mrk.is_unlocked()) ? mrk.is_flat_array() : klass()->is_flatArray_klass();
216 }
217 bool oopDesc::is_null_free_array() const {
218 markWord mrk = mark();
219 return (mrk.is_unlocked()) ? mrk.is_null_free_array() : klass()->is_null_free_array_klass();
220 }
221 #else
222 bool oopDesc::is_flatArray() const { return klass()->is_flatArray_klass(); }
223 bool oopDesc::is_null_free_array() const { return klass()->is_null_free_array_klass(); }
224 #endif
225
226 void* oopDesc::field_addr(int offset) const { return reinterpret_cast<void*>(cast_from_oop<intptr_t>(as_oop()) + offset); }
227
228 template <class T>
229 T* oopDesc::obj_field_addr(int offset) const { return (T*) field_addr(offset); }
230
231 template <typename T>
232 size_t oopDesc::field_offset(T* p) const { return pointer_delta((void*)p, (void*)this, 1); }
233
234 template <DecoratorSet decorators>
235 inline oop oopDesc::obj_field_access(int offset) const { return HeapAccess<decorators>::oop_load_at(as_oop(), offset); }
236 inline oop oopDesc::obj_field(int offset) const { return HeapAccess<>::oop_load_at(as_oop(), offset); }
237
238 inline void oopDesc::obj_field_put(int offset, oop value) { HeapAccess<>::oop_store_at(as_oop(), offset, value); }
239
240 inline jbyte oopDesc::byte_field(int offset) const { return HeapAccess<>::load_at(as_oop(), offset); }
241 inline void oopDesc::byte_field_put(int offset, jbyte value) { HeapAccess<>::store_at(as_oop(), offset, value); }
242
243 inline jchar oopDesc::char_field(int offset) const { return HeapAccess<>::load_at(as_oop(), offset); }
244 inline void oopDesc::char_field_put(int offset, jchar value) { HeapAccess<>::store_at(as_oop(), offset, value); }
245
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