/*

 * Copyright (c) 2014, 2015, 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_VM_GC_PARALLEL_PSPROMOTIONLAB_INLINE_HPP

#define SHARE_VM_GC_PARALLEL_PSPROMOTIONLAB_INLINE_HPP

#include "gc/parallel/psPromotionLAB.hpp"

#include "gc/shared/collectedHeap.inline.hpp"

HeapWord* PSYoungPromotionLAB::allocate(size_t size) {

  // Can't assert this, when young fills, we keep the LAB around, but flushed.

  // assert(_state != flushed, "Sanity");

  HeapWord* obj = CollectedHeap::align_allocation_or_fail(top(), end(), SurvivorAlignmentInBytes);

  if (obj == NULL) {

    return NULL;

  }

  HeapWord* new_top = obj + size;

  // The 'new_top>obj' check is needed to detect overflow of obj+size.

  if (new_top > obj && new_top <= end()) {

    set_top(new_top);

    assert(is_ptr_aligned(obj, SurvivorAlignmentInBytes) && is_object_aligned((intptr_t)new_top),

           "checking alignment");

    return obj;

  } else {

    set_top(obj);

    return NULL;

  }

}

#endif // SHARE_VM_GC_PARALLEL_PSPROMOTIONLAB_INLINE_HPP