/*

 * Copyright (c) 2015, 2019, 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.

 */

#include "precompiled.hpp"

#include "gc/z/zAddress.inline.hpp"

#include "gc/z/zGranuleMap.inline.hpp"

#include "gc/z/zPage.inline.hpp"

#include "gc/z/zPageTable.inline.hpp"

#include "runtime/orderAccess.hpp"

#include "utilities/debug.hpp"

ZPageTable::ZPageTable() :

    _map() {}

void ZPageTable::insert(ZPage* page) {

  const uintptr_t addr = ZAddress::good(page->start());

  const size_t size = page->size();

  // Make sure a newly created page is

  // visible before updating the page table.

  OrderAccess::storestore();

  assert(get(addr) == NULL, "Invalid entry");

  _map.put(addr, size, page);

}

void ZPageTable::remove(ZPage* page) {

  const uintptr_t addr = ZAddress::good(page->start());

  const size_t size = page->size();

  assert(get(addr) == page, "Invalid entry");

  _map.put(addr, size, NULL);

}