/*************************************************************************

 *                                                                       *

 * Open Dynamics Engine, Copyright (C) 2001,2002 Russell L. Smith.       *

 * All rights reserved.  Email: russ@q12.org   Web: www.q12.org          *

 *                                                                       *

 * This library is free software; you can redistribute it and/or         *

 * modify it under the terms of EITHER:                                  *

 *   (1) The GNU Lesser General Public License as published by the Free  *

 *       Software Foundation; either version 2.1 of the License, or (at  *

 *       your option) any later version. The text of the GNU Lesser      *

 *       General Public License is included with this library in the     *

 *       file LICENSE.TXT.                                               *

 *   (2) The BSD-style license that is included with this library in     *

 *       the file LICENSE-BSD.TXT.                                       *

 *                                                                       *

 * This library 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 files    *

 * LICENSE.TXT and LICENSE-BSD.TXT for more details.                     *

 *                                                                       *

 *************************************************************************/

#include <ode/config.h>

#include <ode/memory.h>

#include <ode/error.h>

#include "array.h"

static inline int roundUpToPowerOfTwo (int x)

{

  int i = 1;

  while (i < x) i <<= 1;

  return i;

}

void dArrayBase::_freeAll (int sizeofT)

{

  if (_data) {

    if (_data == this+1) return;	// if constructLocalArray() was called

    dFree (_data,_anum * sizeofT);

  }

}

void dArrayBase::_setSize (int newsize, int sizeofT)

{

  if (newsize < 0) return;

  if (newsize > _anum) {

    if (_data == this+1) {

      // this is a no-no, because constructLocalArray() was called

    }

    int newanum = roundUpToPowerOfTwo (newsize);

    if (_data) _data = dRealloc (_data, _anum*sizeofT, newanum*sizeofT);

    else _data = dAlloc (newanum*sizeofT);

    _anum = newanum;

  }

  _size = newsize;

}

void * dArrayBase::operator new (size_t size)

{

  return dAlloc (size);

}

void dArrayBase::operator delete (void *ptr, size_t size)

{

  dFree (ptr,size);

}

void dArrayBase::constructLocalArray (int __anum)

{

  _size = 0;

  _anum = __anum;

  _data = this+1;

}