From 1ec410ecd725f5a3ccb2d2fc16f48730d9d9fe43 Mon Sep 17 00:00:00 2001 From: dan miller Date: Fri, 19 Oct 2007 05:22:23 +0000 Subject: trying to fix my screwup, please hold on --- libraries/ode-0.9/ode/src/stack.h | 138 -------------------------------------- 1 file changed, 138 deletions(-) delete mode 100644 libraries/ode-0.9/ode/src/stack.h (limited to 'libraries/ode-0.9/ode/src/stack.h') diff --git a/libraries/ode-0.9/ode/src/stack.h b/libraries/ode-0.9/ode/src/stack.h deleted file mode 100644 index 5afff41..0000000 --- a/libraries/ode-0.9/ode/src/stack.h +++ /dev/null @@ -1,138 +0,0 @@ -/************************************************************************* - * * - * 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 comes from the `reuse' library. copy any changes back to the source. - -these stack allocation functions are a replacement for alloca(), except that -they allocate memory from a separate pool. - -advantages over alloca(): - - consecutive allocations are guaranteed to be contiguous with increasing - address. - - functions can allocate stack memory that is returned to the caller, - in other words pushing and popping stack frames is optional. - -disadvantages compared to alloca(): - - less portable - - slightly slower, although still orders of magnitude faster than malloc(). - - longjmp() and exceptions do not deallocate stack memory (but who cares?). - -just like alloca(): - - using too much stack memory does not fail gracefully, it fails with a - segfault. - -*/ - - -#ifndef _ODE_STACK_H_ -#define _ODE_STACK_H_ - - -#ifdef WIN32 -#include "windows.h" -#endif - - -struct dStack { - char *base; // bottom of the stack - int size; // maximum size of the stack - char *pointer; // current top of the stack - char *frame; // linked list of stack frame ptrs -# ifdef WIN32 // stuff for windows: - int pagesize; // - page size - this is ASSUMED to be a power of 2 - int committed; // - bytes committed in allocated region -#endif - - // initialize the stack. `max_size' is the maximum size that the stack can - // reach. on unix and windows a `virtual' memory block of this size is - // mapped into the address space but does not actually consume physical - // memory until it is referenced - so it is safe to set this to a high value. - - void init (int max_size); - - - // destroy the stack. this unmaps any virtual memory that was allocated. - - void destroy(); - - - // allocate `size' bytes from the stack and return a pointer to the allocated - // memory. `size' must be >= 0. the returned pointer will be aligned to the - // size of a long int. - - char * alloc (int size) - { - char *ret = pointer; - pointer += ((size-1) | (sizeof(long int)-1) )+1; -# ifdef WIN32 - // for windows we need to commit pages as they are required - if ((pointer-base) > committed) { - committed = ((pointer-base-1) | (pagesize-1))+1; // round up to pgsize - VirtualAlloc (base,committed,MEM_COMMIT,PAGE_READWRITE); - } -# endif - return ret; - } - - - // return the address that will be returned by the next call to alloc() - - char *nextAlloc() - { - return pointer; - } - - - // push and pop the current size of the stack. pushFrame() saves the current - // frame pointer on the stack, and popFrame() retrieves it. a typical - // stack-using function will bracket alloc() calls with pushFrame() and - // popFrame(). both functions return the current stack pointer - this should - // be the same value for the two bracketing calls. calling popFrame() too - // many times will result in a segfault. - - char * pushFrame() - { - char *newframe = pointer; - char **addr = (char**) alloc (sizeof(char*)); - *addr = frame; - frame = newframe; - return newframe; - - /* OLD CODE - *((char**)pointer) = frame; - frame = pointer; - char *ret = pointer; - pointer += sizeof(char*); - return ret; - */ - } - - char * popFrame() - { - pointer = frame; - frame = *((char**)pointer); - return pointer; - } -}; - - -#endif -- cgit v1.1