From f205de7847da7ae1c10212d82e7042d0100b4ce0 Mon Sep 17 00:00:00 2001
From: dan miller
Date: Fri, 19 Oct 2007 05:24:38 +0000
Subject: from the start... checking in ode-0.9

---
 libraries/ode-0.9/ode/src/stack.cpp | 114 ++++++++++++++++++++++++++++++++++++
 1 file changed, 114 insertions(+)
 create mode 100644 libraries/ode-0.9/ode/src/stack.cpp

(limited to 'libraries/ode-0.9/ode/src/stack.cpp')

diff --git a/libraries/ode-0.9/ode/src/stack.cpp b/libraries/ode-0.9/ode/src/stack.cpp
new file mode 100644
index 0000000..e062f92
--- /dev/null
+++ b/libraries/ode-0.9/ode/src/stack.cpp
@@ -0,0 +1,114 @@
+/*************************************************************************
+ *                                                                       *
+ * 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.                     *
+ *                                                                       *
+ *************************************************************************/
+
+@@@ this file should not be compiled any more @@@
+
+#include <string.h>
+#include <errno.h>
+#include "stack.h"
+#include "ode/error.h"
+#include "ode/config.h"
+
+//****************************************************************************
+// unix version that uses mmap(). some systems have anonymous mmaps and some
+// need to mmap /dev/zero.
+
+#ifndef WIN32
+
+#include <unistd.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+
+void dStack::init (int max_size)
+{
+  if (sizeof(long int) != sizeof(char*)) dDebug (0,"internal");
+  if (max_size <= 0) dDebug (0,"Stack::init() given size <= 0");
+
+#ifndef MMAP_ANONYMOUS
+  static int dev_zero_fd = -1;	// cached file descriptor for /dev/zero
+  if (dev_zero_fd < 0) dev_zero_fd = open ("/dev/zero", O_RDWR);
+  if (dev_zero_fd < 0) dError (0,"can't open /dev/zero (%s)",strerror(errno));
+  base = (char*) mmap (0,max_size, PROT_READ | PROT_WRITE, MAP_PRIVATE,
+		       dev_zero_fd,0);
+#else
+  base = (char*) mmap (0,max_size, PROT_READ | PROT_WRITE,
+		       MAP_PRIVATE | MAP_ANON,0,0);
+#endif
+
+  if (int(base) == -1) dError (0,"Stack::init(), mmap() failed, "
+    "max_size=%d (%s)",max_size,strerror(errno));
+  size = max_size;
+  pointer = base;
+  frame = 0;
+}
+
+
+void dStack::destroy()
+{
+  munmap (base,size);
+  base = 0;
+  size = 0;
+  pointer = 0;
+  frame = 0;
+}
+
+#endif
+
+//****************************************************************************
+
+#ifdef WIN32
+
+#include "windows.h"
+
+
+void dStack::init (int max_size)
+{
+  if (sizeof(LPVOID) != sizeof(char*)) dDebug (0,"internal");
+  if (max_size <= 0) dDebug (0,"Stack::init() given size <= 0");
+  base = (char*) VirtualAlloc (NULL,max_size,MEM_RESERVE,PAGE_READWRITE);
+  if (base == 0) dError (0,"Stack::init(), VirtualAlloc() failed, "
+    "max_size=%d",max_size);
+  size = max_size;
+  pointer = base;
+  frame = 0;
+  committed = 0;
+
+  // get page size
+  SYSTEM_INFO info;
+  GetSystemInfo (&info);
+  pagesize = info.dwPageSize;
+}
+
+
+void dStack::destroy()
+{
+  VirtualFree (base,0,MEM_RELEASE);
+  base = 0;
+  size = 0;
+  pointer = 0;
+  frame = 0;
+}
+
+#endif
-- 
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