src/hotspot/share/gc/x/xGranuleMap.inline.hpp

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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#ifndef SHARE_GC_X_XGRANULEMAP_INLINE_HPP
#define SHARE_GC_X_XGRANULEMAP_INLINE_HPP

#include "gc/x/xGranuleMap.hpp"

#include "gc/x/xArray.inline.hpp"
#include "gc/x/xGlobals.hpp"
#include "memory/allocation.inline.hpp"
#include "runtime/atomic.hpp"
#include "utilities/align.hpp"
#include "utilities/debug.hpp"

template <typename T>
inline XGranuleMap<T>::XGranuleMap(size_t max_offset) :
    _size(max_offset >> XGranuleSizeShift),
    _map(MmapArrayAllocator<T>::allocate(_size, mtGC)) {
  assert(is_aligned(max_offset, XGranuleSize), "Misaligned");
}

template <typename T>
inline XGranuleMap<T>::~XGranuleMap() {
  MmapArrayAllocator<T>::free(_map, _size);
}

template <typename T>
inline size_t XGranuleMap<T>::index_for_offset(uintptr_t offset) const {
  const size_t index = offset >> XGranuleSizeShift;
  assert(index < _size, "Invalid index");
  return index;
}

template <typename T>
inline T XGranuleMap<T>::get(uintptr_t offset) const {
  const size_t index = index_for_offset(offset);
  return _map[index];
}

template <typename T>
inline void XGranuleMap<T>::put(uintptr_t offset, T value) {
  const size_t index = index_for_offset(offset);
  _map[index] = value;
}

template <typename T>
inline void XGranuleMap<T>::put(uintptr_t offset, size_t size, T value) {
  assert(is_aligned(size, XGranuleSize), "Misaligned");

  const size_t start_index = index_for_offset(offset);
  const size_t end_index = start_index + (size >> XGranuleSizeShift);
  for (size_t index = start_index; index < end_index; index++) {
    _map[index] = value;
  }
}

template <typename T>
inline T XGranuleMap<T>::get_acquire(uintptr_t offset) const {
  const size_t index = index_for_offset(offset);
  return Atomic::load_acquire(_map + index);
}

template <typename T>
inline void XGranuleMap<T>::release_put(uintptr_t offset, T value) {
  const size_t index = index_for_offset(offset);
  Atomic::release_store(_map + index, value);
}

template <typename T>
inline XGranuleMapIterator<T>::XGranuleMapIterator(const XGranuleMap<T>* granule_map) :
    XArrayIteratorImpl<T, false /* Parallel */>(granule_map->_map, granule_map->_size) {}

#endif // SHARE_GC_X_XGRANULEMAP_INLINE_HPP