src/hotspot/share/gc/serial/serialBlockOffsetTable.inline.hpp - master - githubmirror/jdk22

src/hotspot/share/gc/serial/serialBlockOffsetTable.inline.hpp

49 строк2 KB

Albert Mingkun Yang

8318647: Serial: Refactor BlockOffsetTable

01 ноя 2023, 14:50

01 ноя 2023, 14:50ab19348

/*
 * Copyright (c) 2000, 2023, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 */

#ifndef SHARE_GC_SERIAL_SERIALBLOCKOFFSETTABLE_INLINE_HPP
#define SHARE_GC_SERIAL_SERIALBLOCKOFFSETTABLE_INLINE_HPP

#include "gc/serial/serialBlockOffsetTable.hpp"

inline size_t SerialBlockOffsetSharedArray::index_for(const void* p) const {
  char* pc = (char*)p;
  assert(pc >= (char*)_reserved.start() &&
         pc <  (char*)_reserved.end(),
         "p not in range.");
  size_t delta = pointer_delta(pc, _reserved.start(), sizeof(char));
  size_t result = delta >> BOTConstants::log_card_size();
  assert(result < _vs.committed_size(), "bad index from address");
  return result;
}

inline HeapWord* SerialBlockOffsetSharedArray::address_for_index(size_t index) const {
  assert(index < _vs.committed_size(), "bad index");
  HeapWord* result = _reserved.start() + (index << BOTConstants::log_card_size_in_words());
  assert(result >= _reserved.start() && result < _reserved.end(),
         "bad address from index");
  return result;
}

#endif // SHARE_GC_SERIAL_SERIALBLOCKOFFSETTABLE_INLINE_HPP