src/hotspot/share/gc/z/zGranuleMap.inline.hpp
author pliden
Wed, 13 Mar 2019 11:31:00 +0100
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child 54162 f344a0c6e19e
permissions -rw-r--r--
8219634: ZGC: Rename ZAddressRangeMap to ZGranuleMap Reviewed-by: eosterlund, stefank
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/*
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 * Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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#ifndef SHARE_GC_Z_ZGRANULEMAP_INLINE_HPP
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#define SHARE_GC_Z_ZGRANULEMAP_INLINE_HPP
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#include "gc/z/zAddress.inline.hpp"
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#include "gc/z/zGlobals.hpp"
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#include "gc/z/zGranuleMap.hpp"
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#include "memory/allocation.inline.hpp"
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template <typename T>
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inline ZGranuleMap<T>::ZGranuleMap() :
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    _map(MmapArrayAllocator<T>::allocate(size(), mtGC)) {}
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template <typename T>
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inline ZGranuleMap<T>::~ZGranuleMap() {
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  MmapArrayAllocator<T>::free(_map, size());
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}
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template <typename T>
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inline size_t ZGranuleMap<T>::index_for_addr(uintptr_t addr) const {
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  assert(!ZAddress::is_null(addr), "Invalid address");
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  const size_t index = ZAddress::offset(addr) >> ZGranuleSizeShift;
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  assert(index < size(), "Invalid index");
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  return index;
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}
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template <typename T>
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inline size_t ZGranuleMap<T>::size() const {
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  return ZAddressOffsetMax >> ZGranuleSizeShift;
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}
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template <typename T>
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inline T ZGranuleMap<T>::get(uintptr_t addr) const {
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  const size_t index = index_for_addr(addr);
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  return _map[index];
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}
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template <typename T>
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inline void ZGranuleMap<T>::put(uintptr_t addr, T value) {
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  const size_t index = index_for_addr(addr);
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  _map[index] = value;
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}
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template <typename T>
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inline ZGranuleMapIterator<T>::ZGranuleMapIterator(const ZGranuleMap<T>* map) :
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    _map(map),
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    _next(0) {}
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template <typename T>
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inline bool ZGranuleMapIterator<T>::next(T* value) {
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  if (_next < _map->size()) {
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    *value = _map->_map[_next++];
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    return true;
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  }
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  // End of map
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  return false;
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}
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#endif // SHARE_GC_Z_ZGRANULEMAP_INLINE_HPP