/*

 * Copyright (c) 1997, 2012, 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 "memory/resourceArea.hpp"

#include "runtime/thread.inline.hpp"

#include "utilities/growableArray.hpp"

#ifdef ASSERT

void GenericGrowableArray::set_nesting() {

  if (on_stack()) {

    _nesting = Thread::current()->resource_area()->nesting();

  }

}

void GenericGrowableArray::check_nesting() {

  // Check for insidious allocation bug: if a GrowableArray overflows, the

  // grown array must be allocated under the same ResourceMark as the original.

  // Otherwise, the _data array will be deallocated too early.

  if (on_stack() &&

      _nesting != Thread::current()->resource_area()->nesting()) {

    fatal("allocation bug: GrowableArray could grow within nested ResourceMark");

  }

}

#endif

void* GenericGrowableArray::raw_allocate(int elementSize) {

  assert(_max >= 0, "integer overflow");

  size_t byte_size = elementSize * (size_t) _max;

  if (on_stack()) {

    return (void*)resource_allocate_bytes(byte_size);

  } else if (on_C_heap()) {

    return (void*)AllocateHeap(byte_size, _memflags);

  } else {

    return _arena->Amalloc(byte_size);

  }

}