src/hotspot/share/gc/g1/heapRegionManager.inline.hpp

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * version 2 for more details (a copy is included in the LICENSE file that
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#ifndef SHARE_GC_G1_HEAPREGIONMANAGER_INLINE_HPP
#define SHARE_GC_G1_HEAPREGIONMANAGER_INLINE_HPP

#include "gc/g1/g1CommittedRegionMap.inline.hpp"
#include "gc/g1/heapRegion.hpp"
#include "gc/g1/heapRegionManager.hpp"
#include "gc/g1/heapRegionSet.inline.hpp"

inline bool HeapRegionManager::is_available(uint region) const {
  return _committed_map.active(region);
}

inline HeapRegion* HeapRegionManager::addr_to_region(HeapWord* addr) const {
  assert(addr < heap_end(),
        "addr: " PTR_FORMAT " end: " PTR_FORMAT, p2i(addr), p2i(heap_end()));
  assert(addr >= heap_bottom(),
        "addr: " PTR_FORMAT " bottom: " PTR_FORMAT, p2i(addr), p2i(heap_bottom()));

  HeapRegion* hr = _regions.get_by_address(addr);
  return hr;
}

inline HeapRegion* HeapRegionManager::at(uint index) const {
  assert(is_available(index), "pre-condition");
  HeapRegion* hr = _regions.get_by_index(index);
  assert(hr != NULL, "sanity");
  assert(hr->hrm_index() == index, "sanity");
  return hr;
}

inline HeapRegion* HeapRegionManager::at_or_null(uint index) const {
  if (!is_available(index)) {
    return NULL;
  }
  HeapRegion* hr = _regions.get_by_index(index);
  assert(hr != NULL, "All available regions must have a HeapRegion but index %u has not.", index);
  assert(hr->hrm_index() == index, "sanity");
  return hr;
}

inline HeapRegion* HeapRegionManager::next_region_in_humongous(HeapRegion* hr) const {
  uint index = hr->hrm_index();
  assert(is_available(index), "pre-condition");
  assert(hr->is_humongous(), "next_region_in_humongous should only be called for a humongous region.");
  index++;
  if (index < reserved_length() && is_available(index) && at(index)->is_continues_humongous()) {
    return at(index);
  } else {
    return NULL;
  }
}

inline void HeapRegionManager::insert_into_free_list(HeapRegion* hr) {
  _free_list.add_ordered(hr);
}

inline HeapRegion* HeapRegionManager::allocate_free_regions_starting_at(uint first, uint num_regions) {
  HeapRegion* start = at(first);
  _free_list.remove_starting_at(start, num_regions);
  return start;
}

#endif // SHARE_GC_G1_HEAPREGIONMANAGER_INLINE_HPP