/*

 * Copyright (c) 2015, 2016, 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/g1/g1SurvivorRegions.hpp"

#include "gc/g1/heapRegion.hpp"

#include "utilities/growableArray.hpp"

#include "utilities/debug.hpp"

G1SurvivorRegions::G1SurvivorRegions() : _regions(new (ResourceObj::C_HEAP, mtGC) GrowableArray<HeapRegion*>(8, true, mtGC)) {}

void G1SurvivorRegions::add(HeapRegion* hr) {

  assert(hr->is_survivor(), "should be flagged as survivor region");

  _regions->append(hr);

}

uint G1SurvivorRegions::length() const {

  return (uint)_regions->length();

}

void G1SurvivorRegions::convert_to_eden() {

  for (GrowableArrayIterator<HeapRegion*> it = _regions->begin();

       it != _regions->end();

       ++it) {

    HeapRegion* hr = *it;

    hr->set_eden_pre_gc();

  }

  clear();

}

void G1SurvivorRegions::clear() {

  _regions->clear();

}