heapRegionSeq.inline.hpp

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#ifndef SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSEQ_INLINE_HPP
#define SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSEQ_INLINE_HPP

#include "gc_implementation/g1/heapRegion.hpp"
#include "gc_implementation/g1/heapRegionSeq.hpp"

inline uintx HeapRegionSeq::addr_to_index_biased(HeapWord* addr) const {
  assert(_heap_bottom <= addr && addr < _heap_end,
         err_msg("addr: "PTR_FORMAT" bottom: "PTR_FORMAT" end: "PTR_FORMAT,
                 addr, _heap_bottom, _heap_end));
  uintx index = (uintx) addr >> _region_shift;
  return index;
}

inline HeapRegion* HeapRegionSeq::addr_to_region_unsafe(HeapWord* addr) const {
  assert(_heap_bottom <= addr && addr < _heap_end,
         err_msg("addr: "PTR_FORMAT" bottom: "PTR_FORMAT" end: "PTR_FORMAT,
                 addr, _heap_bottom, _heap_end));
  uintx index_biased = addr_to_index_biased(addr);
  HeapRegion* hr = _regions_biased[index_biased];
  assert(hr != NULL, "invariant");
  return hr;
}

inline HeapRegion* HeapRegionSeq::addr_to_region(HeapWord* addr) const {
  if (addr != NULL && addr < _heap_end) {
    assert(addr >= _heap_bottom,
          err_msg("addr: "PTR_FORMAT" bottom: "PTR_FORMAT, addr, _heap_bottom));
    return addr_to_region_unsafe(addr);
  }
  return NULL;
}

inline HeapRegion* HeapRegionSeq::at(uint index) const {
  assert(index < length(), "pre-condition");
  HeapRegion* hr = _regions[index];
  assert(hr != NULL, "sanity");
  assert(hr->hrs_index() == index, "sanity");
  return hr;
}

#endif // SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSEQ_INLINE_HPP