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git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14789 87f5fb63-7c3d-0410-a384-fd976d0f7a62
118 lines
3.5 KiB
C
118 lines
3.5 KiB
C
/*
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* $Id: stdlib_stack_usage.c,v 1.2 2005-01-02 09:07:18 obarthel Exp $
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*
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* :ts=4
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*
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* Portable ISO 'C' (1994) runtime library for the Amiga computer
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* Copyright (c) 2002-2005 by Olaf Barthel <olsen@sourcery.han.de>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Neither the name of Olaf Barthel nor the names of contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "stdlib_headers.h"
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/****************************************************************************/
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#include "macros.h"
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/****************************************************************************/
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#ifndef NDEBUG
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static struct StackSwapStruct stack_swap_struct;
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#endif /* NDEBUG */
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/****************************************************************************/
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#define STACK_FILL_COOKIE 0xA1
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/****************************************************************************/
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void
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__stack_usage_init(struct StackSwapStruct * UNUSED stk)
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{
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#ifndef NDEBUG
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{
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if(stk != NULL)
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{
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size_t stack_size = ((ULONG)stk->stk_Upper - (ULONG)stk->stk_Lower);
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memset(stk->stk_Lower,STACK_FILL_COOKIE,stack_size);
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stack_swap_struct = (*stk);
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}
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}
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#endif /* NDEBUG */
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}
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/****************************************************************************/
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void
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__stack_usage_exit(void)
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{
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#ifndef NDEBUG
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{
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if(stack_swap_struct.stk_Lower != NULL && stack_swap_struct.stk_Upper != 0)
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{
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const UBYTE * m = (const UBYTE *)stack_swap_struct.stk_Lower;
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size_t stack_size = ((ULONG)stack_swap_struct.stk_Upper - (ULONG)stack_swap_struct.stk_Lower);
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size_t total,i;
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total = 0;
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/* Figure out how much of the stack was used by checking
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if the fill pattern was overwritten. */
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for(i = 0 ; i < stack_size ; i++)
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{
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/* Strangely, the first long word is always trashed,
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even if the stack doesn't grow down this far... */
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if(i > sizeof(LONG) && m[i] != STACK_FILL_COOKIE)
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break;
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total++;
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}
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kprintf("[%s] total amount of stack space used = %ld bytes\n",
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__program_name,stack_size - total);
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stack_swap_struct.stk_Lower = NULL;
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stack_swap_struct.stk_Upper = 0;
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}
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if(__stk_maxsize == 0)
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{
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kprintf("[%s] no stack extension was performed\n",
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__program_name);
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}
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else
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{
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kprintf("[%s] maximum size of extended stack = %ld bytes, stack was extended %ld times\n",
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__program_name,__stk_maxsize,__stk_extensions);
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}
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}
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#endif /* NDEBUG */
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}
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