67 *(markWord*)(((char*)mem) + mark_offset_in_bytes()) = m;
68 }
69
70 void oopDesc::release_set_mark(HeapWord* mem, markWord m) {
71 Atomic::release_store((markWord*)(((char*)mem) + mark_offset_in_bytes()), m);
72 }
73
74 void oopDesc::release_set_mark(markWord m) {
75 Atomic::release_store(&_mark, m);
76 }
77
78 markWord oopDesc::cas_set_mark(markWord new_mark, markWord old_mark) {
79 return Atomic::cmpxchg(&_mark, old_mark, new_mark);
80 }
81
82 markWord oopDesc::cas_set_mark(markWord new_mark, markWord old_mark, atomic_memory_order order) {
83 return Atomic::cmpxchg(&_mark, old_mark, new_mark, order);
84 }
85
86 markWord oopDesc::prototype_mark() const {
87 if (UseCompactObjectHeaders) {
88 return klass()->prototype_header();
89 } else {
90 return markWord::prototype();
91 }
92 }
93
94 void oopDesc::init_mark() {
95 set_mark(prototype_mark());
96 }
97
98 Klass* oopDesc::klass() const {
99 switch (ObjLayout::klass_mode()) {
100 case ObjLayout::Compact:
101 return mark().klass();
102 case ObjLayout::Compressed:
103 return CompressedKlassPointers::decode_not_null(_metadata._compressed_klass);
104 default:
105 return _metadata._klass;
106 }
107 }
108
109 Klass* oopDesc::klass_or_null() const {
110 switch (ObjLayout::klass_mode()) {
111 case ObjLayout::Compact:
112 return mark().klass_or_null();
113 case ObjLayout::Compressed:
114 return CompressedKlassPointers::decode(_metadata._compressed_klass);
115 default:
116 return _metadata._klass;
117 }
224 // skipping the intermediate round to HeapWordSize.
225 s = align_up(size_in_bytes, MinObjAlignmentInBytes) / HeapWordSize;
226
227 assert(s == klass->oop_size(this), "wrong array object size");
228 } else {
229 // Must be zero, so bite the bullet and take the virtual call.
230 s = klass->oop_size(this);
231 }
232 }
233
234 assert(s > 0, "Oop size must be greater than zero, not %zu", s);
235 assert(is_object_aligned(s), "Oop size is not properly aligned: %zu", s);
236 return s;
237 }
238
239 bool oopDesc::is_instance() const { return klass()->is_instance_klass(); }
240 bool oopDesc::is_instanceRef() const { return klass()->is_reference_instance_klass(); }
241 bool oopDesc::is_stackChunk() const { return klass()->is_stack_chunk_instance_klass(); }
242 bool oopDesc::is_array() const { return klass()->is_array_klass(); }
243 bool oopDesc::is_objArray() const { return klass()->is_objArray_klass(); }
244 bool oopDesc::is_typeArray() const { return klass()->is_typeArray_klass(); }
245
246 template<typename T>
247 T* oopDesc::field_addr(int offset) const { return reinterpret_cast<T*>(cast_from_oop<intptr_t>(as_oop()) + offset); }
248
249 template <typename T>
250 size_t oopDesc::field_offset(T* p) const { return pointer_delta((void*)p, (void*)this, 1); }
251
252 template <DecoratorSet decorators>
253 inline oop oopDesc::obj_field_access(int offset) const { return HeapAccess<decorators>::oop_load_at(as_oop(), offset); }
254 inline oop oopDesc::obj_field(int offset) const { return HeapAccess<>::oop_load_at(as_oop(), offset); }
255
256 inline void oopDesc::obj_field_put(int offset, oop value) { HeapAccess<>::oop_store_at(as_oop(), offset, value); }
257 template <DecoratorSet decorators>
258 inline void oopDesc::obj_field_put_access(int offset, oop value) { HeapAccess<decorators>::oop_store_at(as_oop(), offset, value); }
259
260 inline jbyte oopDesc::byte_field(int offset) const { return *field_addr<jbyte>(offset); }
261 inline void oopDesc::byte_field_put(int offset, jbyte value) { *field_addr<jbyte>(offset) = value; }
262
263 inline jchar oopDesc::char_field(int offset) const { return *field_addr<jchar>(offset); }
264 inline void oopDesc::char_field_put(int offset, jchar value) { *field_addr<jchar>(offset) = value; }
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67 *(markWord*)(((char*)mem) + mark_offset_in_bytes()) = m;
68 }
69
70 void oopDesc::release_set_mark(HeapWord* mem, markWord m) {
71 Atomic::release_store((markWord*)(((char*)mem) + mark_offset_in_bytes()), m);
72 }
73
74 void oopDesc::release_set_mark(markWord m) {
75 Atomic::release_store(&_mark, m);
76 }
77
78 markWord oopDesc::cas_set_mark(markWord new_mark, markWord old_mark) {
79 return Atomic::cmpxchg(&_mark, old_mark, new_mark);
80 }
81
82 markWord oopDesc::cas_set_mark(markWord new_mark, markWord old_mark, atomic_memory_order order) {
83 return Atomic::cmpxchg(&_mark, old_mark, new_mark, order);
84 }
85
86 markWord oopDesc::prototype_mark() const {
87 if (UseCompactObjectHeaders || EnableValhalla) {
88 return klass()->prototype_header();
89 } else {
90 return markWord::prototype();
91 }
92 }
93
94 void oopDesc::init_mark() {
95 set_mark(prototype_mark());
96 }
97
98 // This is for parallel gc, which doesn't always have the klass.
99 // markWord::must_be_preserved preserves the original prototype header bits for EnableValhalla,
100 // I don't know why serial gc doesn't work the same.
101 void oopDesc::reinit_mark() {
102 if (UseCompactObjectHeaders) {
103 set_mark(klass()->prototype_header());
104 } else {
105 set_mark(markWord::prototype());
106 }
107 }
108
109 Klass* oopDesc::klass() const {
110 switch (ObjLayout::klass_mode()) {
111 case ObjLayout::Compact:
112 return mark().klass();
113 case ObjLayout::Compressed:
114 return CompressedKlassPointers::decode_not_null(_metadata._compressed_klass);
115 default:
116 return _metadata._klass;
117 }
118 }
119
120 Klass* oopDesc::klass_or_null() const {
121 switch (ObjLayout::klass_mode()) {
122 case ObjLayout::Compact:
123 return mark().klass_or_null();
124 case ObjLayout::Compressed:
125 return CompressedKlassPointers::decode(_metadata._compressed_klass);
126 default:
127 return _metadata._klass;
128 }
235 // skipping the intermediate round to HeapWordSize.
236 s = align_up(size_in_bytes, MinObjAlignmentInBytes) / HeapWordSize;
237
238 assert(s == klass->oop_size(this), "wrong array object size");
239 } else {
240 // Must be zero, so bite the bullet and take the virtual call.
241 s = klass->oop_size(this);
242 }
243 }
244
245 assert(s > 0, "Oop size must be greater than zero, not %zu", s);
246 assert(is_object_aligned(s), "Oop size is not properly aligned: %zu", s);
247 return s;
248 }
249
250 bool oopDesc::is_instance() const { return klass()->is_instance_klass(); }
251 bool oopDesc::is_instanceRef() const { return klass()->is_reference_instance_klass(); }
252 bool oopDesc::is_stackChunk() const { return klass()->is_stack_chunk_instance_klass(); }
253 bool oopDesc::is_array() const { return klass()->is_array_klass(); }
254 bool oopDesc::is_objArray() const { return klass()->is_objArray_klass(); }
255 bool oopDesc::is_refArray() const { return klass()->is_refArray_klass(); }
256 bool oopDesc::is_typeArray() const { return klass()->is_typeArray_klass(); }
257 bool oopDesc::is_refined_objArray() const { return klass()->is_refined_objArray_klass(); }
258
259 bool oopDesc::is_inline_type() const { return mark().is_inline_type(); }
260 #ifdef _LP64
261 bool oopDesc::is_flatArray() const {
262 markWord mrk = mark();
263 return (mrk.is_unlocked()) ? mrk.is_flat_array() : klass()->is_flatArray_klass();
264 }
265 bool oopDesc::is_null_free_array() const {
266 markWord mrk = mark();
267 return (mrk.is_unlocked()) ? mrk.is_null_free_array() : klass()->is_null_free_array_klass();
268 }
269 #else
270 bool oopDesc::is_flatArray() const { return klass()->is_flatArray_klass(); }
271 bool oopDesc::is_null_free_array() const { return klass()->is_null_free_array_klass(); }
272 #endif
273
274 template<typename T>
275 T* oopDesc::field_addr(int offset) const { return reinterpret_cast<T*>(cast_from_oop<intptr_t>(as_oop()) + offset); }
276
277 template <typename T>
278 size_t oopDesc::field_offset(T* p) const { return pointer_delta((void*)p, (void*)this, 1); }
279
280 template <DecoratorSet decorators>
281 inline oop oopDesc::obj_field_access(int offset) const { return HeapAccess<decorators>::oop_load_at(as_oop(), offset); }
282 inline oop oopDesc::obj_field(int offset) const { return HeapAccess<>::oop_load_at(as_oop(), offset); }
283
284 inline void oopDesc::obj_field_put(int offset, oop value) { HeapAccess<>::oop_store_at(as_oop(), offset, value); }
285 template <DecoratorSet decorators>
286 inline void oopDesc::obj_field_put_access(int offset, oop value) { HeapAccess<decorators>::oop_store_at(as_oop(), offset, value); }
287
288 inline jbyte oopDesc::byte_field(int offset) const { return *field_addr<jbyte>(offset); }
289 inline void oopDesc::byte_field_put(int offset, jbyte value) { *field_addr<jbyte>(offset) = value; }
290
291 inline jchar oopDesc::char_field(int offset) const { return *field_addr<jchar>(offset); }
292 inline void oopDesc::char_field_put(int offset, jchar value) { *field_addr<jchar>(offset) = value; }
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