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 asserts
537 bool oopDesc::is_oop(bool ignore_mark_word) const {
538 oop obj = (oop) this;
539 if (!check_obj_alignment(obj)) return false;
540 if (!Universe::heap()->is_in_reserved(obj)) return false;
541 // obj is aligned and accessible in heap
542 if (Universe::heap()->is_in_reserved(obj->klass_or_null())) return false;
543
544 // Header verification: the mark is typically non-NULL. If we're
545 // at a safepoint, it must not be null.
546 // Outside of a safepoint, the header could be changing (for example,
547 // another thread could be inflating a lock on this object).
548 if (ignore_mark_word) {
549 return true;
550 }
551 if (mark() != NULL) {
552 return true;
553 }
554 return !SafepointSynchronize::is_at_safepoint();
555 }
556
557
558 // used only for asserts
559 bool oopDesc::is_oop_or_null(bool ignore_mark_word) const {
560 return this == NULL ? true : is_oop(ignore_mark_word);
561 }
562
563 #ifndef PRODUCT
564 // used only for asserts
565 bool oopDesc::is_unlocked_oop() const {
566 if (!Universe::heap()->is_in_reserved(this)) return false;
567 return mark()->is_unlocked();
568 }
569 #endif // PRODUCT
570
571 // Used only for markSweep, scavenging
572 bool oopDesc::is_gc_marked() const {
573 return mark()->is_marked();
574 }
575
576 bool oopDesc::is_scavengable() const {
577 return Universe::heap()->is_scavengable(this);
578 }
579
580 // Used by scavengers
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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 asserts and guarantees
537 inline bool oopDesc::is_oop(oop obj, bool ignore_mark_word) {
538 if (!check_obj_alignment(obj)) return false;
539 if (!Universe::heap()->is_in_reserved(obj)) return false;
540 // obj is aligned and accessible in heap
541 if (Universe::heap()->is_in_reserved(obj->klass_or_null())) return false;
542
543 // Header verification: the mark is typically non-NULL. If we're
544 // at a safepoint, it must not be null.
545 // Outside of a safepoint, the header could be changing (for example,
546 // another thread could be inflating a lock on this object).
547 if (ignore_mark_word) {
548 return true;
549 }
550 if (obj->mark() != NULL) {
551 return true;
552 }
553 return !SafepointSynchronize::is_at_safepoint();
554 }
555
556 // used only for asserts and guarantees
557 inline bool oopDesc::is_oop_or_null(oop obj, bool ignore_mark_word) {
558 return obj == NULL ? true : is_oop(obj, ignore_mark_word);
559 }
560
561 #ifndef PRODUCT
562 // used only for asserts
563 bool oopDesc::is_unlocked_oop() const {
564 if (!Universe::heap()->is_in_reserved(this)) return false;
565 return mark()->is_unlocked();
566 }
567 #endif // PRODUCT
568
569 // Used only for markSweep, scavenging
570 bool oopDesc::is_gc_marked() const {
571 return mark()->is_marked();
572 }
573
574 bool oopDesc::is_scavengable() const {
575 return Universe::heap()->is_scavengable(this);
576 }
577
578 // Used by scavengers
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