src/hotspot/share/gc/z/zVirtualMemory.inline.hpp

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#ifndef SHARE_GC_Z_ZVIRTUALMEMORY_INLINE_HPP
#define SHARE_GC_Z_ZVIRTUALMEMORY_INLINE_HPP

#include "gc/z/zVirtualMemory.hpp"

#include "gc/z/zAddress.inline.hpp"
#include "gc/z/zGlobals.hpp"
#include "gc/z/zRange.inline.hpp"
#include "utilities/align.hpp"
#include "utilities/debug.hpp"

inline ZVirtualMemory::ZVirtualMemory()
  : ZRange() {}

inline ZVirtualMemory::ZVirtualMemory(zoffset start, size_t size)
  : ZRange(start, size) {
  // ZVirtualMemory is only used for ZGranuleSize multiple ranges
  assert(is_aligned(untype(start), ZGranuleSize), "must be multiple of ZGranuleSize");
  assert(is_aligned(size, ZGranuleSize), "must be multiple of ZGranuleSize");
}

inline ZVirtualMemory::ZVirtualMemory(const ZRange<zoffset, zoffset_end>& range)
  : ZVirtualMemory(range.start(), range.size()) {}

inline int ZVirtualMemory::granule_count() const {
  const size_t granule_count = size() >> ZGranuleSizeShift;

  assert(granule_count <= static_cast<size_t>(std::numeric_limits<int>::max()),
         "must not overflow an int %zu", granule_count);

  return static_cast<int>(granule_count);
}

#endif // SHARE_GC_Z_ZVIRTUALMEMORY_INLINE_HPP