/*

 * 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/zPage.inline.hpp"

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

#include "runtime/orderAccess.hpp"

#include "utilities/align.hpp"

#include "utilities/debug.hpp"

ZPage::ZPage(uint8_t type, ZVirtualMemory vmem, ZPhysicalMemory pmem) :

    _type(type),

    _pinned(0),

    _numa_id((uint8_t)-1),

    _seqnum(0),

    _virtual(vmem),

    _top(start()),

    _livemap(object_max_count()),

    _refcount(0),

    _forwarding(),

    _physical(pmem) {

  assert(!_physical.is_null(), "Should not be null");

  assert(!_virtual.is_null(), "Should not be null");

  assert((type == ZPageTypeSmall && size() == ZPageSizeSmall) ||

         (type == ZPageTypeMedium && size() == ZPageSizeMedium) ||

         (type == ZPageTypeLarge && is_aligned(size(), ZGranuleSize)),

         "Page type/size mismatch");

}

ZPage::~ZPage() {

  assert(!is_active(), "Should not be active");

  assert(is_detached(), "Should be detached");

}

void ZPage::reset() {

  assert(!is_active(), "Should not be active");

  assert(!is_pinned(), "Should not be pinned");

  assert(!is_detached(), "Should not be detached");

  _seqnum = ZGlobalSeqNum;

  _top = start();

  _livemap.reset();

  // Make sure we don't make the page active before

  // the reset of the above fields are visible.

  OrderAccess::storestore();

  _refcount = 1;

}

void ZPage::print_on(outputStream* out) const {

  out->print_cr(" %-6s  " PTR_FORMAT " " PTR_FORMAT " " PTR_FORMAT " %s%s%s%s%s%s",

                type_to_string(), start(), top(), end(),

                is_allocating()  ? " Allocating"  : "",

                is_relocatable() ? " Relocatable" : "",

                is_forwarding()  ? " Forwarding"  : "",

                is_pinned()      ? " Pinned"      : "",

                is_detached()    ? " Detached"    : "",

                !is_active()     ? " Inactive"    : "");

}

void ZPage::print() const {

  print_on(tty);

}