567 inline bool ParallelCompactData::RegionData::claim_unsafe()
568 {
569 if (available()) {
570 _dc_and_los |= dc_claimed;
571 return true;
572 }
573 return false;
574 }
575
576 inline void ParallelCompactData::RegionData::add_live_obj(size_t words)
577 {
578 assert(words <= (size_t)los_mask - live_obj_size(), "overflow");
579 Atomic::add(&_dc_and_los, static_cast<region_sz_t>(words));
580 }
581
582 inline void ParallelCompactData::RegionData::set_highest_ref(HeapWord* addr)
583 {
584 #ifdef ASSERT
585 HeapWord* tmp = _highest_ref;
586 while (addr > tmp) {
587 tmp = Atomic::cmpxchg(addr, &_highest_ref, tmp);
588 }
589 #endif // #ifdef ASSERT
590 }
591
592 inline bool ParallelCompactData::RegionData::claim()
593 {
594 const region_sz_t los = static_cast<region_sz_t>(live_obj_size());
595 const region_sz_t old = Atomic::cmpxchg(dc_claimed | los, &_dc_and_los, los);
596 return old == los;
597 }
598
599 inline ParallelCompactData::RegionData*
600 ParallelCompactData::region(size_t region_idx) const
601 {
602 assert(region_idx <= region_count(), "bad arg");
603 return _region_data + region_idx;
604 }
605
606 inline size_t
607 ParallelCompactData::region(const RegionData* const region_ptr) const
608 {
609 assert(region_ptr >= _region_data, "bad arg");
610 assert(region_ptr <= _region_data + region_count(), "bad arg");
611 return pointer_delta(region_ptr, _region_data, sizeof(RegionData));
612 }
613
614 inline ParallelCompactData::BlockData*
615 ParallelCompactData::block(size_t n) const {
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567 inline bool ParallelCompactData::RegionData::claim_unsafe()
568 {
569 if (available()) {
570 _dc_and_los |= dc_claimed;
571 return true;
572 }
573 return false;
574 }
575
576 inline void ParallelCompactData::RegionData::add_live_obj(size_t words)
577 {
578 assert(words <= (size_t)los_mask - live_obj_size(), "overflow");
579 Atomic::add(&_dc_and_los, static_cast<region_sz_t>(words));
580 }
581
582 inline void ParallelCompactData::RegionData::set_highest_ref(HeapWord* addr)
583 {
584 #ifdef ASSERT
585 HeapWord* tmp = _highest_ref;
586 while (addr > tmp) {
587 tmp = Atomic::cmpxchg(&_highest_ref, tmp, addr);
588 }
589 #endif // #ifdef ASSERT
590 }
591
592 inline bool ParallelCompactData::RegionData::claim()
593 {
594 const region_sz_t los = static_cast<region_sz_t>(live_obj_size());
595 const region_sz_t old = Atomic::cmpxchg(&_dc_and_los, los, dc_claimed | los);
596 return old == los;
597 }
598
599 inline ParallelCompactData::RegionData*
600 ParallelCompactData::region(size_t region_idx) const
601 {
602 assert(region_idx <= region_count(), "bad arg");
603 return _region_data + region_idx;
604 }
605
606 inline size_t
607 ParallelCompactData::region(const RegionData* const region_ptr) const
608 {
609 assert(region_ptr >= _region_data, "bad arg");
610 assert(region_ptr <= _region_data + region_count(), "bad arg");
611 return pointer_delta(region_ptr, _region_data, sizeof(RegionData));
612 }
613
614 inline ParallelCompactData::BlockData*
615 ParallelCompactData::block(size_t n) const {
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