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