ode/src/array.cpp

   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/odeconfig.h>
  24 #include <ode/memory.h>
  25 #include <ode/error.h>
  26 #include "config.h"
  27 #include "array.h"
  28
  29
  30 static inline int roundUpToPowerOfTwo (int x)
  31 {
  32   int i = 1;
  33   while (i < x) i <<= 1;
  34   return i;
  35 }
  36
  37
  38 void dArrayBase::_freeAll (int sizeofT)
  39 {
  40   if (_data) {
  41     if (_data == this+1) return;        // if constructLocalArray() was called
  42     dFree (_data,_anum * sizeofT);
  43   }
  44 }
  45
  46
  47 void dArrayBase::_setSize (int newsize, int sizeofT)
  48 {
  49   if (newsize < 0) return;
  50   if (newsize > _anum) {
  51     if (_data == this+1) {
  52       // this is a no-no, because constructLocalArray() was called
  53       dDebug (0,"setSize() out of space in LOCAL array");
  54     }
  55     int newanum = roundUpToPowerOfTwo (newsize);
  56     if (_data) _data = dRealloc (_data, _anum*sizeofT, newanum*sizeofT);
  57     else _data = dAlloc (newanum*sizeofT);
  58     _anum = newanum;
  59   }
  60   _size = newsize;
  61 }
  62
  63
  64 void * dArrayBase::operator new (size_t size)
  65 {
  66   return dAlloc (size);
  67 }
  68
  69
  70 void dArrayBase::operator delete (void *ptr, size_t size)
  71 {
  72   dFree (ptr,size);
  73 }
  74
  75
  76 void dArrayBase::constructLocalArray (int __anum)
  77 {
  78   _size = 0;
  79   _anum = __anum;
  80   _data = this+1;
  81 }