4641     register_region_with_region_attr(new_alloc_region);
4642     _hr_printer.alloc(new_alloc_region);
4643     return new_alloc_region;
4644   }
4645   return NULL;
4646 }
4647 
4648 void G1CollectedHeap::retire_gc_alloc_region(HeapRegion* alloc_region,
4649                                              size_t allocated_bytes,
4650                                              G1HeapRegionAttr dest) {
4651   policy()->record_bytes_copied_during_gc(allocated_bytes);
4652   if (dest.is_old()) {
4653     old_set_add(alloc_region);
4654   } else {
4655     assert(dest.is_young(), "Retiring alloc region should be young (%d)", dest.type());
4656     _survivor.add_used_bytes(allocated_bytes);
4657   }
4658 
4659   bool const during_im = collector_state()->in_initial_mark_gc();
4660   if (during_im && allocated_bytes > 0) {
4661     _cm->root_regions()->add(alloc_region);
4662   }
4663   _hr_printer.retire(alloc_region);
4664 }
4665 
4666 HeapRegion* G1CollectedHeap::alloc_highest_free_region() {
4667   bool expanded = false;
4668   uint index = _hrm->find_highest_free(&expanded);
4669 
4670   if (index != G1_NO_HRM_INDEX) {
4671     if (expanded) {
4672       log_debug(gc, ergo, heap)("Attempt heap expansion (requested address range outside heap bounds). region size: " SIZE_FORMAT "B",
4673                                 HeapRegion::GrainWords * HeapWordSize);
4674     }
4675     _hrm->allocate_free_regions_starting_at(index, 1);
4676     return region_at(index);
4677   }
4678   return NULL;
4679 }
4680 
4681 // Optimized nmethod scanning

4641     register_region_with_region_attr(new_alloc_region);
4642     _hr_printer.alloc(new_alloc_region);
4643     return new_alloc_region;
4644   }
4645   return NULL;
4646 }
4647 
4648 void G1CollectedHeap::retire_gc_alloc_region(HeapRegion* alloc_region,
4649                                              size_t allocated_bytes,
4650                                              G1HeapRegionAttr dest) {
4651   policy()->record_bytes_copied_during_gc(allocated_bytes);
4652   if (dest.is_old()) {
4653     old_set_add(alloc_region);
4654   } else {
4655     assert(dest.is_young(), "Retiring alloc region should be young (%d)", dest.type());
4656     _survivor.add_used_bytes(allocated_bytes);
4657   }
4658 
4659   bool const during_im = collector_state()->in_initial_mark_gc();
4660   if (during_im && allocated_bytes > 0) {
4661     _cm->root_regions()->add(alloc_region->next_top_at_mark_start(), alloc_region->top());
4662   }
4663   _hr_printer.retire(alloc_region);
4664 }
4665 
4666 HeapRegion* G1CollectedHeap::alloc_highest_free_region() {
4667   bool expanded = false;
4668   uint index = _hrm->find_highest_free(&expanded);
4669 
4670   if (index != G1_NO_HRM_INDEX) {
4671     if (expanded) {
4672       log_debug(gc, ergo, heap)("Attempt heap expansion (requested address range outside heap bounds). region size: " SIZE_FORMAT "B",
4673                                 HeapRegion::GrainWords * HeapWordSize);
4674     }
4675     _hrm->allocate_free_regions_starting_at(index, 1);
4676     return region_at(index);
4677   }
4678   return NULL;
4679 }
4680 
4681 // Optimized nmethod scanning