49 50 template <class T> inline void update_barrier_set_pre(T* p, oop v) { 51 oopDesc::bs()->write_ref_field_pre(p, v); 52 } 53 54 template <class T> void oop_store(T* p, oop v) { 55 if (always_do_update_barrier) { 56 oop_store((volatile T*)p, v); 57 } else { 58 update_barrier_set_pre(p, v); 59 oopDesc::encode_store_heap_oop(p, v); 60 // always_do_update_barrier == false => 61 // Either we are at a safepoint (in GC) or CMS is not used. In both 62 // cases it's unnecessary to mark the card as dirty with release sematics. 63 update_barrier_set((void*)p, v, false /* release */); // cast away type 64 } 65 } 66 67 template <class T> void oop_store(volatile T* p, oop v) { 68 update_barrier_set_pre((T*)p, v); // cast away volatile 69 // Used by release_obj_field_put, so use release_store_ptr. 70 oopDesc::release_encode_store_heap_oop(p, v); 71 // When using CMS we must mark the card corresponding to p as dirty 72 // with release sematics to prevent that CMS sees the dirty card but 73 // not the new value v at p due to reordering of the two 74 // stores. Note that CMS has a concurrent precleaning phase, where 75 // it reads the card table while the Java threads are running. 76 update_barrier_set((void*)p, v, true /* release */); // cast away type 77 } 78 79 // Should replace *addr = oop assignments where addr type depends on UseCompressedOops 80 // (without having to remember the function name this calls). 81 inline void oop_store_raw(HeapWord* addr, oop value) { 82 if (UseCompressedOops) { 83 oopDesc::encode_store_heap_oop((narrowOop*)addr, value); 84 } else { 85 oopDesc::encode_store_heap_oop((oop*)addr, value); 86 } 87 } 88 89 // Implementation of all inlined member functions defined in oop.hpp 90 // We need a separate file to avoid circular references 91 92 void oopDesc::release_set_mark(markOop m) { 93 OrderAccess::release_store_ptr(&_mark, m); 94 } 95 96 markOop oopDesc::cas_set_mark(markOop new_mark, markOop old_mark) { 97 return Atomic::cmpxchg(new_mark, &_mark, old_mark); 98 } 99 100 void oopDesc::init_mark() { 101 set_mark(markOopDesc::prototype_for_object(this)); 102 } 103 104 Klass* oopDesc::klass() const { 105 if (UseCompressedClassPointers) { 106 return Klass::decode_klass_not_null(_metadata._compressed_klass); 107 } else { 108 return _metadata._klass; 109 } 110 } 111 112 Klass* oopDesc::klass_or_null() const volatile { 113 if (UseCompressedClassPointers) { 114 return Klass::decode_klass(_metadata._compressed_klass); 115 } else { 116 return _metadata._klass; 117 } 118 } 119 120 Klass* oopDesc::klass_or_null_acquire() const volatile { 121 if (UseCompressedClassPointers) { 122 // Workaround for non-const load_acquire parameter. 123 const volatile narrowKlass* addr = &_metadata._compressed_klass; 124 volatile narrowKlass* xaddr = const_cast<volatile narrowKlass*>(addr); 125 return Klass::decode_klass(OrderAccess::load_acquire(xaddr)); 126 } else { 127 return (Klass*)OrderAccess::load_ptr_acquire(&_metadata._klass); 128 } 129 } 130 131 Klass** oopDesc::klass_addr() { 132 // Only used internally and with CMS and will not work with 133 // UseCompressedOops 134 assert(!UseCompressedClassPointers, "only supported with uncompressed klass pointers"); 135 return (Klass**) &_metadata._klass; 136 } 137 138 narrowKlass* oopDesc::compressed_klass_addr() { 139 assert(UseCompressedClassPointers, "only called by compressed klass pointers"); 140 return &_metadata._compressed_klass; 141 } 142 143 #define CHECK_SET_KLASS(k) \ 144 do { \ 145 assert(Universe::is_bootstrapping() || k != NULL, "NULL Klass"); \ 146 assert(Universe::is_bootstrapping() || k->is_klass(), "not a Klass"); \ 147 } while (0) 148 149 void oopDesc::set_klass(Klass* k) { 150 CHECK_SET_KLASS(k); 151 if (UseCompressedClassPointers) { 152 *compressed_klass_addr() = Klass::encode_klass_not_null(k); 153 } else { 154 *klass_addr() = k; 155 } 156 } 157 158 void oopDesc::release_set_klass(Klass* k) { 159 CHECK_SET_KLASS(k); 160 if (UseCompressedClassPointers) { 161 OrderAccess::release_store(compressed_klass_addr(), 162 Klass::encode_klass_not_null(k)); 163 } else { 164 OrderAccess::release_store_ptr(klass_addr(), k); 165 } 166 } 167 168 #undef CHECK_SET_KLASS 169 170 int oopDesc::klass_gap() const { 171 return *(int*)(((intptr_t)this) + klass_gap_offset_in_bytes()); 172 } 173 174 void oopDesc::set_klass_gap(int v) { 175 if (UseCompressedClassPointers) { 176 *(int*)(((intptr_t)this) + klass_gap_offset_in_bytes()) = v; 177 } 178 } 179 180 void oopDesc::set_klass_to_list_ptr(oop k) { 181 // This is only to be used during GC, for from-space objects, so no 182 // barrier is needed. 183 if (UseCompressedClassPointers) { 184 _metadata._compressed_klass = (narrowKlass)encode_heap_oop(k); // may be null (parnew overflow handling) 344 return decode_heap_oop_not_null(*p); 345 } 346 347 // Load and decode an oop out of the heap accepting null 348 oop oopDesc::load_decode_heap_oop(narrowOop* p) { 349 return decode_heap_oop(*p); 350 } 351 352 // Encode and store a heap oop. 353 void oopDesc::encode_store_heap_oop_not_null(narrowOop* p, oop v) { 354 *p = encode_heap_oop_not_null(v); 355 } 356 357 // Encode and store a heap oop allowing for null. 358 void oopDesc::encode_store_heap_oop(narrowOop* p, oop v) { 359 *p = encode_heap_oop(v); 360 } 361 362 // Store heap oop as is for volatile fields. 363 void oopDesc::release_store_heap_oop(volatile oop* p, oop v) { 364 OrderAccess::release_store_ptr(p, v); 365 } 366 void oopDesc::release_store_heap_oop(volatile narrowOop* p, narrowOop v) { 367 OrderAccess::release_store(p, v); 368 } 369 370 void oopDesc::release_encode_store_heap_oop_not_null(volatile narrowOop* p, oop v) { 371 // heap oop is not pointer sized. 372 OrderAccess::release_store(p, encode_heap_oop_not_null(v)); 373 } 374 void oopDesc::release_encode_store_heap_oop_not_null(volatile oop* p, oop v) { 375 OrderAccess::release_store_ptr(p, v); 376 } 377 378 void oopDesc::release_encode_store_heap_oop(volatile oop* p, oop v) { 379 OrderAccess::release_store_ptr(p, v); 380 } 381 void oopDesc::release_encode_store_heap_oop(volatile narrowOop* p, oop v) { 382 OrderAccess::release_store(p, encode_heap_oop(v)); 383 } 384 385 // These functions are only used to exchange oop fields in instances, 386 // not headers. 387 oop oopDesc::atomic_exchange_oop(oop exchange_value, volatile HeapWord *dest) { 388 if (UseCompressedOops) { 389 // encode exchange value from oop to T 390 narrowOop val = encode_heap_oop(exchange_value); 391 narrowOop old = (narrowOop)Atomic::xchg(val, (narrowOop*)dest); 392 // decode old from T to oop 393 return decode_heap_oop(old); 394 } else { 395 return (oop)Atomic::xchg_ptr(exchange_value, (oop*)dest); 396 } 397 } 398 399 oop oopDesc::atomic_compare_exchange_oop(oop exchange_value, 400 volatile HeapWord *dest, 401 oop compare_value, 402 bool prebarrier) { 403 if (UseCompressedOops) { 404 if (prebarrier) { 405 update_barrier_set_pre((narrowOop*)dest, exchange_value); 406 } 407 // encode exchange and compare value from oop to T 408 narrowOop val = encode_heap_oop(exchange_value); 409 narrowOop cmp = encode_heap_oop(compare_value); 410 411 narrowOop old = Atomic::cmpxchg(val, (narrowOop*)dest, cmp); 412 // decode old from T to oop 413 return decode_heap_oop(old); 414 } else { 415 if (prebarrier) { 430 void oopDesc::obj_field_put(int offset, oop value) { 431 UseCompressedOops ? oop_store(obj_field_addr<narrowOop>(offset), value) : 432 oop_store(obj_field_addr<oop>(offset), value); 433 } 434 435 void oopDesc::obj_field_put_raw(int offset, oop value) { 436 UseCompressedOops ? 437 encode_store_heap_oop(obj_field_addr<narrowOop>(offset), value) : 438 encode_store_heap_oop(obj_field_addr<oop>(offset), value); 439 } 440 void oopDesc::obj_field_put_volatile(int offset, oop value) { 441 OrderAccess::release(); 442 obj_field_put(offset, value); 443 OrderAccess::fence(); 444 } 445 446 Metadata* oopDesc::metadata_field(int offset) const { return *metadata_field_addr(offset); } 447 void oopDesc::metadata_field_put(int offset, Metadata* value) { *metadata_field_addr(offset) = value; } 448 449 Metadata* oopDesc::metadata_field_acquire(int offset) const { 450 return (Metadata*)OrderAccess::load_ptr_acquire(metadata_field_addr(offset)); 451 } 452 453 void oopDesc::release_metadata_field_put(int offset, Metadata* value) { 454 OrderAccess::release_store_ptr(metadata_field_addr(offset), value); 455 } 456 457 jbyte oopDesc::byte_field(int offset) const { return (jbyte) *byte_field_addr(offset); } 458 void oopDesc::byte_field_put(int offset, jbyte contents) { *byte_field_addr(offset) = (jint) contents; } 459 460 jchar oopDesc::char_field(int offset) const { return (jchar) *char_field_addr(offset); } 461 void oopDesc::char_field_put(int offset, jchar contents) { *char_field_addr(offset) = (jint) contents; } 462 463 jboolean oopDesc::bool_field(int offset) const { return (jboolean) *bool_field_addr(offset); } 464 void oopDesc::bool_field_put(int offset, jboolean contents) { *bool_field_addr(offset) = (((jint) contents) & 1); } 465 466 jint oopDesc::int_field(int offset) const { return *int_field_addr(offset); } 467 void oopDesc::int_field_put(int offset, jint contents) { *int_field_addr(offset) = contents; } 468 469 jshort oopDesc::short_field(int offset) const { return (jshort) *short_field_addr(offset); } 470 void oopDesc::short_field_put(int offset, jshort contents) { *short_field_addr(offset) = (jint) contents;} 471 472 jlong oopDesc::long_field(int offset) const { return *long_field_addr(offset); } 473 void oopDesc::long_field_put(int offset, jlong contents) { *long_field_addr(offset) = contents; } 474 475 jfloat oopDesc::float_field(int offset) const { return *float_field_addr(offset); } 476 void oopDesc::float_field_put(int offset, jfloat contents) { *float_field_addr(offset) = contents; } 477 478 jdouble oopDesc::double_field(int offset) const { return *double_field_addr(offset); } 479 void oopDesc::double_field_put(int offset, jdouble contents) { *double_field_addr(offset) = contents; } 480 481 address oopDesc::address_field(int offset) const { return *address_field_addr(offset); } 482 void oopDesc::address_field_put(int offset, address contents) { *address_field_addr(offset) = contents; } 483 484 oop oopDesc::obj_field_acquire(int offset) const { 485 return UseCompressedOops ? 486 decode_heap_oop((narrowOop) 487 OrderAccess::load_acquire(obj_field_addr<narrowOop>(offset))) 488 : decode_heap_oop((oop) 489 OrderAccess::load_ptr_acquire(obj_field_addr<oop>(offset))); 490 } 491 void oopDesc::release_obj_field_put(int offset, oop value) { 492 UseCompressedOops ? 493 oop_store((volatile narrowOop*)obj_field_addr<narrowOop>(offset), value) : 494 oop_store((volatile oop*) obj_field_addr<oop>(offset), value); 495 } 496 497 jbyte oopDesc::byte_field_acquire(int offset) const { return OrderAccess::load_acquire(byte_field_addr(offset)); } 498 void oopDesc::release_byte_field_put(int offset, jbyte contents) { OrderAccess::release_store(byte_field_addr(offset), contents); } 499 500 jchar oopDesc::char_field_acquire(int offset) const { return OrderAccess::load_acquire(char_field_addr(offset)); } 501 void oopDesc::release_char_field_put(int offset, jchar contents) { OrderAccess::release_store(char_field_addr(offset), contents); } 502 503 jboolean oopDesc::bool_field_acquire(int offset) const { return OrderAccess::load_acquire(bool_field_addr(offset)); } 504 void oopDesc::release_bool_field_put(int offset, jboolean contents) { OrderAccess::release_store(bool_field_addr(offset), jboolean(contents & 1)); } 505 506 jint oopDesc::int_field_acquire(int offset) const { return OrderAccess::load_acquire(int_field_addr(offset)); } 507 void oopDesc::release_int_field_put(int offset, jint contents) { OrderAccess::release_store(int_field_addr(offset), contents); } 508 509 jshort oopDesc::short_field_acquire(int offset) const { return (jshort)OrderAccess::load_acquire(short_field_addr(offset)); } 510 void oopDesc::release_short_field_put(int offset, jshort contents) { OrderAccess::release_store(short_field_addr(offset), contents); } 511 512 jlong oopDesc::long_field_acquire(int offset) const { return OrderAccess::load_acquire(long_field_addr(offset)); } 513 void oopDesc::release_long_field_put(int offset, jlong contents) { OrderAccess::release_store(long_field_addr(offset), contents); } 514 515 jfloat oopDesc::float_field_acquire(int offset) const { return OrderAccess::load_acquire(float_field_addr(offset)); } 516 void oopDesc::release_float_field_put(int offset, jfloat contents) { OrderAccess::release_store(float_field_addr(offset), contents); } 517 518 jdouble oopDesc::double_field_acquire(int offset) const { return OrderAccess::load_acquire(double_field_addr(offset)); } 519 void oopDesc::release_double_field_put(int offset, jdouble contents) { OrderAccess::release_store(double_field_addr(offset), contents); } 520 521 address oopDesc::address_field_acquire(int offset) const { return (address) OrderAccess::load_ptr_acquire(address_field_addr(offset)); } 522 void oopDesc::release_address_field_put(int offset, address contents) { OrderAccess::release_store_ptr(address_field_addr(offset), contents); } 523 524 bool oopDesc::is_locked() const { 525 return mark()->is_locked(); 526 } 527 528 bool oopDesc::is_unlocked() const { 529 return mark()->is_unlocked(); 530 } 531 532 bool oopDesc::has_bias_pattern() const { 533 return mark()->has_bias_pattern(); 534 } 535 536 // Used only for markSweep, scavenging 537 bool oopDesc::is_gc_marked() const { 538 return mark()->is_marked(); 539 } 540 541 bool oopDesc::is_scavengable() const { 542 return Universe::heap()->is_scavengable(this); | 49 50 template <class T> inline void update_barrier_set_pre(T* p, oop v) { 51 oopDesc::bs()->write_ref_field_pre(p, v); 52 } 53 54 template <class T> void oop_store(T* p, oop v) { 55 if (always_do_update_barrier) { 56 oop_store((volatile T*)p, v); 57 } else { 58 update_barrier_set_pre(p, v); 59 oopDesc::encode_store_heap_oop(p, v); 60 // always_do_update_barrier == false => 61 // Either we are at a safepoint (in GC) or CMS is not used. In both 62 // cases it's unnecessary to mark the card as dirty with release sematics. 63 update_barrier_set((void*)p, v, false /* release */); // cast away type 64 } 65 } 66 67 template <class T> void oop_store(volatile T* p, oop v) { 68 update_barrier_set_pre((T*)p, v); // cast away volatile 69 // Used by release_obj_field_put, so use release_store. 70 oopDesc::release_encode_store_heap_oop(p, v); 71 // When using CMS we must mark the card corresponding to p as dirty 72 // with release sematics to prevent that CMS sees the dirty card but 73 // not the new value v at p due to reordering of the two 74 // stores. Note that CMS has a concurrent precleaning phase, where 75 // it reads the card table while the Java threads are running. 76 update_barrier_set((void*)p, v, true /* release */); // cast away type 77 } 78 79 // Should replace *addr = oop assignments where addr type depends on UseCompressedOops 80 // (without having to remember the function name this calls). 81 inline void oop_store_raw(HeapWord* addr, oop value) { 82 if (UseCompressedOops) { 83 oopDesc::encode_store_heap_oop((narrowOop*)addr, value); 84 } else { 85 oopDesc::encode_store_heap_oop((oop*)addr, value); 86 } 87 } 88 89 // Implementation of all inlined member functions defined in oop.hpp 90 // We need a separate file to avoid circular references 91 92 void oopDesc::release_set_mark(markOop m) { 93 OrderAccess::release_store(&_mark, m); 94 } 95 96 markOop oopDesc::cas_set_mark(markOop new_mark, markOop old_mark) { 97 return Atomic::cmpxchg(new_mark, &_mark, old_mark); 98 } 99 100 void oopDesc::init_mark() { 101 set_mark(markOopDesc::prototype_for_object(this)); 102 } 103 104 Klass* oopDesc::klass() const { 105 if (UseCompressedClassPointers) { 106 return Klass::decode_klass_not_null(_metadata._compressed_klass); 107 } else { 108 return _metadata._klass; 109 } 110 } 111 112 Klass* oopDesc::klass_or_null() const volatile { 113 if (UseCompressedClassPointers) { 114 return Klass::decode_klass(_metadata._compressed_klass); 115 } else { 116 return _metadata._klass; 117 } 118 } 119 120 Klass* oopDesc::klass_or_null_acquire() const volatile { 121 if (UseCompressedClassPointers) { 122 // Workaround for non-const load_acquire parameter. 123 const volatile narrowKlass* addr = &_metadata._compressed_klass; 124 volatile narrowKlass* xaddr = const_cast<volatile narrowKlass*>(addr); 125 return Klass::decode_klass(OrderAccess::load_acquire(xaddr)); 126 } else { 127 return OrderAccess::load_acquire(&_metadata._klass); 128 } 129 } 130 131 Klass** oopDesc::klass_addr() { 132 // Only used internally and with CMS and will not work with 133 // UseCompressedOops 134 assert(!UseCompressedClassPointers, "only supported with uncompressed klass pointers"); 135 return (Klass**) &_metadata._klass; 136 } 137 138 narrowKlass* oopDesc::compressed_klass_addr() { 139 assert(UseCompressedClassPointers, "only called by compressed klass pointers"); 140 return &_metadata._compressed_klass; 141 } 142 143 #define CHECK_SET_KLASS(k) \ 144 do { \ 145 assert(Universe::is_bootstrapping() || k != NULL, "NULL Klass"); \ 146 assert(Universe::is_bootstrapping() || k->is_klass(), "not a Klass"); \ 147 } while (0) 148 149 void oopDesc::set_klass(Klass* k) { 150 CHECK_SET_KLASS(k); 151 if (UseCompressedClassPointers) { 152 *compressed_klass_addr() = Klass::encode_klass_not_null(k); 153 } else { 154 *klass_addr() = k; 155 } 156 } 157 158 void oopDesc::release_set_klass(Klass* k) { 159 CHECK_SET_KLASS(k); 160 if (UseCompressedClassPointers) { 161 OrderAccess::release_store(compressed_klass_addr(), 162 Klass::encode_klass_not_null(k)); 163 } else { 164 OrderAccess::release_store(klass_addr(), k); 165 } 166 } 167 168 #undef CHECK_SET_KLASS 169 170 int oopDesc::klass_gap() const { 171 return *(int*)(((intptr_t)this) + klass_gap_offset_in_bytes()); 172 } 173 174 void oopDesc::set_klass_gap(int v) { 175 if (UseCompressedClassPointers) { 176 *(int*)(((intptr_t)this) + klass_gap_offset_in_bytes()) = v; 177 } 178 } 179 180 void oopDesc::set_klass_to_list_ptr(oop k) { 181 // This is only to be used during GC, for from-space objects, so no 182 // barrier is needed. 183 if (UseCompressedClassPointers) { 184 _metadata._compressed_klass = (narrowKlass)encode_heap_oop(k); // may be null (parnew overflow handling) 344 return decode_heap_oop_not_null(*p); 345 } 346 347 // Load and decode an oop out of the heap accepting null 348 oop oopDesc::load_decode_heap_oop(narrowOop* p) { 349 return decode_heap_oop(*p); 350 } 351 352 // Encode and store a heap oop. 353 void oopDesc::encode_store_heap_oop_not_null(narrowOop* p, oop v) { 354 *p = encode_heap_oop_not_null(v); 355 } 356 357 // Encode and store a heap oop allowing for null. 358 void oopDesc::encode_store_heap_oop(narrowOop* p, oop v) { 359 *p = encode_heap_oop(v); 360 } 361 362 // Store heap oop as is for volatile fields. 363 void oopDesc::release_store_heap_oop(volatile oop* p, oop v) { 364 OrderAccess::release_store(p, v); 365 } 366 void oopDesc::release_store_heap_oop(volatile narrowOop* p, narrowOop v) { 367 OrderAccess::release_store(p, v); 368 } 369 370 void oopDesc::release_encode_store_heap_oop_not_null(volatile narrowOop* p, oop v) { 371 // heap oop is not pointer sized. 372 OrderAccess::release_store(p, encode_heap_oop_not_null(v)); 373 } 374 void oopDesc::release_encode_store_heap_oop_not_null(volatile oop* p, oop v) { 375 OrderAccess::release_store(p, v); 376 } 377 378 void oopDesc::release_encode_store_heap_oop(volatile oop* p, oop v) { 379 OrderAccess::release_store(p, v); 380 } 381 void oopDesc::release_encode_store_heap_oop(volatile narrowOop* p, oop v) { 382 OrderAccess::release_store(p, encode_heap_oop(v)); 383 } 384 385 // These functions are only used to exchange oop fields in instances, 386 // not headers. 387 oop oopDesc::atomic_exchange_oop(oop exchange_value, volatile HeapWord *dest) { 388 if (UseCompressedOops) { 389 // encode exchange value from oop to T 390 narrowOop val = encode_heap_oop(exchange_value); 391 narrowOop old = Atomic::xchg(val, (narrowOop*)dest); 392 // decode old from T to oop 393 return decode_heap_oop(old); 394 } else { 395 return Atomic::xchg(exchange_value, (oop*)dest); 396 } 397 } 398 399 oop oopDesc::atomic_compare_exchange_oop(oop exchange_value, 400 volatile HeapWord *dest, 401 oop compare_value, 402 bool prebarrier) { 403 if (UseCompressedOops) { 404 if (prebarrier) { 405 update_barrier_set_pre((narrowOop*)dest, exchange_value); 406 } 407 // encode exchange and compare value from oop to T 408 narrowOop val = encode_heap_oop(exchange_value); 409 narrowOop cmp = encode_heap_oop(compare_value); 410 411 narrowOop old = Atomic::cmpxchg(val, (narrowOop*)dest, cmp); 412 // decode old from T to oop 413 return decode_heap_oop(old); 414 } else { 415 if (prebarrier) { 430 void oopDesc::obj_field_put(int offset, oop value) { 431 UseCompressedOops ? oop_store(obj_field_addr<narrowOop>(offset), value) : 432 oop_store(obj_field_addr<oop>(offset), value); 433 } 434 435 void oopDesc::obj_field_put_raw(int offset, oop value) { 436 UseCompressedOops ? 437 encode_store_heap_oop(obj_field_addr<narrowOop>(offset), value) : 438 encode_store_heap_oop(obj_field_addr<oop>(offset), value); 439 } 440 void oopDesc::obj_field_put_volatile(int offset, oop value) { 441 OrderAccess::release(); 442 obj_field_put(offset, value); 443 OrderAccess::fence(); 444 } 445 446 Metadata* oopDesc::metadata_field(int offset) const { return *metadata_field_addr(offset); } 447 void oopDesc::metadata_field_put(int offset, Metadata* value) { *metadata_field_addr(offset) = value; } 448 449 Metadata* oopDesc::metadata_field_acquire(int offset) const { 450 return OrderAccess::load_acquire(metadata_field_addr(offset)); 451 } 452 453 void oopDesc::release_metadata_field_put(int offset, Metadata* value) { 454 OrderAccess::release_store(metadata_field_addr(offset), value); 455 } 456 457 jbyte oopDesc::byte_field(int offset) const { return (jbyte) *byte_field_addr(offset); } 458 void oopDesc::byte_field_put(int offset, jbyte contents) { *byte_field_addr(offset) = (jint) contents; } 459 460 jchar oopDesc::char_field(int offset) const { return (jchar) *char_field_addr(offset); } 461 void oopDesc::char_field_put(int offset, jchar contents) { *char_field_addr(offset) = (jint) contents; } 462 463 jboolean oopDesc::bool_field(int offset) const { return (jboolean) *bool_field_addr(offset); } 464 void oopDesc::bool_field_put(int offset, jboolean contents) { *bool_field_addr(offset) = (((jint) contents) & 1); } 465 466 jint oopDesc::int_field(int offset) const { return *int_field_addr(offset); } 467 void oopDesc::int_field_put(int offset, jint contents) { *int_field_addr(offset) = contents; } 468 469 jshort oopDesc::short_field(int offset) const { return (jshort) *short_field_addr(offset); } 470 void oopDesc::short_field_put(int offset, jshort contents) { *short_field_addr(offset) = (jint) contents;} 471 472 jlong oopDesc::long_field(int offset) const { return *long_field_addr(offset); } 473 void oopDesc::long_field_put(int offset, jlong contents) { *long_field_addr(offset) = contents; } 474 475 jfloat oopDesc::float_field(int offset) const { return *float_field_addr(offset); } 476 void oopDesc::float_field_put(int offset, jfloat contents) { *float_field_addr(offset) = contents; } 477 478 jdouble oopDesc::double_field(int offset) const { return *double_field_addr(offset); } 479 void oopDesc::double_field_put(int offset, jdouble contents) { *double_field_addr(offset) = contents; } 480 481 address oopDesc::address_field(int offset) const { return *address_field_addr(offset); } 482 void oopDesc::address_field_put(int offset, address contents) { *address_field_addr(offset) = contents; } 483 484 oop oopDesc::obj_field_acquire(int offset) const { 485 return UseCompressedOops ? 486 decode_heap_oop((narrowOop) 487 OrderAccess::load_acquire(obj_field_addr<narrowOop>(offset))) 488 : decode_heap_oop( 489 OrderAccess::load_acquire(obj_field_addr<oop>(offset))); 490 } 491 void oopDesc::release_obj_field_put(int offset, oop value) { 492 UseCompressedOops ? 493 oop_store((volatile narrowOop*)obj_field_addr<narrowOop>(offset), value) : 494 oop_store((volatile oop*) obj_field_addr<oop>(offset), value); 495 } 496 497 jbyte oopDesc::byte_field_acquire(int offset) const { return OrderAccess::load_acquire(byte_field_addr(offset)); } 498 void oopDesc::release_byte_field_put(int offset, jbyte contents) { OrderAccess::release_store(byte_field_addr(offset), contents); } 499 500 jchar oopDesc::char_field_acquire(int offset) const { return OrderAccess::load_acquire(char_field_addr(offset)); } 501 void oopDesc::release_char_field_put(int offset, jchar contents) { OrderAccess::release_store(char_field_addr(offset), contents); } 502 503 jboolean oopDesc::bool_field_acquire(int offset) const { return OrderAccess::load_acquire(bool_field_addr(offset)); } 504 void oopDesc::release_bool_field_put(int offset, jboolean contents) { OrderAccess::release_store(bool_field_addr(offset), jboolean(contents & 1)); } 505 506 jint oopDesc::int_field_acquire(int offset) const { return OrderAccess::load_acquire(int_field_addr(offset)); } 507 void oopDesc::release_int_field_put(int offset, jint contents) { OrderAccess::release_store(int_field_addr(offset), contents); } 508 509 jshort oopDesc::short_field_acquire(int offset) const { return (jshort)OrderAccess::load_acquire(short_field_addr(offset)); } 510 void oopDesc::release_short_field_put(int offset, jshort contents) { OrderAccess::release_store(short_field_addr(offset), contents); } 511 512 jlong oopDesc::long_field_acquire(int offset) const { return OrderAccess::load_acquire(long_field_addr(offset)); } 513 void oopDesc::release_long_field_put(int offset, jlong contents) { OrderAccess::release_store(long_field_addr(offset), contents); } 514 515 jfloat oopDesc::float_field_acquire(int offset) const { return OrderAccess::load_acquire(float_field_addr(offset)); } 516 void oopDesc::release_float_field_put(int offset, jfloat contents) { OrderAccess::release_store(float_field_addr(offset), contents); } 517 518 jdouble oopDesc::double_field_acquire(int offset) const { return OrderAccess::load_acquire(double_field_addr(offset)); } 519 void oopDesc::release_double_field_put(int offset, jdouble contents) { OrderAccess::release_store(double_field_addr(offset), contents); } 520 521 address oopDesc::address_field_acquire(int offset) const { return OrderAccess::load_acquire(address_field_addr(offset)); } 522 void oopDesc::release_address_field_put(int offset, address contents) { OrderAccess::release_store(address_field_addr(offset), contents); } 523 524 bool oopDesc::is_locked() const { 525 return mark()->is_locked(); 526 } 527 528 bool oopDesc::is_unlocked() const { 529 return mark()->is_unlocked(); 530 } 531 532 bool oopDesc::has_bias_pattern() const { 533 return mark()->has_bias_pattern(); 534 } 535 536 // Used only for markSweep, scavenging 537 bool oopDesc::is_gc_marked() const { 538 return mark()->is_marked(); 539 } 540 541 bool oopDesc::is_scavengable() const { 542 return Universe::heap()->is_scavengable(this); |