ode/src/array.cpp
changeset 0 2f259fa3e83a
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ode/src/array.cpp	Tue Feb 02 01:00:49 2010 +0200
@@ -0,0 +1,79 @@
+/*************************************************************************
+ *                                                                       *
+ * 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;
+}