1 /*************************************************************************

     2  *                                                                       *

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

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

     5  *                                                                       *

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

     7  * modify it under the terms of EITHER:                                  *

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

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

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

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

    12  *       file LICENSE.TXT.                                               *

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

    14  *       the file LICENSE-BSD.TXT.                                       *

    15  *                                                                       *

    16  * This library is distributed in the hope that it will be useful,       *

    17  * but WITHOUT ANY WARRANTY; without even the implied warranty of        *

    18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files    *

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

    20  *                                                                       *

    21  *************************************************************************/

    22 

    23 #include <ode/config.h>

    24 #include <ode/memory.h>

    25 #include <ode/error.h>

    26 #include "array.h"

    27 

    28 

    29 static inline int roundUpToPowerOfTwo (int x)

    30 {

    31   int i = 1;

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

    33   return i;

    34 }

    35 

    36 

    37 void dArrayBase::_freeAll (int sizeofT)

    38 {

    39   if (_data) {

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

    41     dFree (_data,_anum * sizeofT);

    42   }

    43 }

    44 

    45 

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

    47 {

    48   if (newsize < 0) return;

    49   if (newsize > _anum) {

    50     if (_data == this+1) {

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

    52     }

    53     int newanum = roundUpToPowerOfTwo (newsize);

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

    55     else _data = dAlloc (newanum*sizeofT);

    56     _anum = newanum;

    57   }

    58   _size = newsize;

    59 }

    60 

    61 

    62 void * dArrayBase::operator new (size_t size)

    63 {

    64   return dAlloc (size);

    65 }

    66 

    67 

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

    69 {

    70   dFree (ptr,size);

    71 }

    72 

    73 

    74 void dArrayBase::constructLocalArray (int __anum)

    75 {

    76   _size = 0;

    77   _anum = __anum;

    78   _data = this+1;

    79 }