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/*
* Copyright (c) 1996-1998 University of Utah and the Flux Group.
* All rights reserved.
*
* This file is part of the Flux OSKit. The OSKit is free software, also known
* as "open source;" you can redistribute it and/or modify it under the terms
* of the GNU General Public License (GPL), version 2, as published by the Free
* Software Foundation (FSF). To explore alternate licensing terms, contact
* the University of Utah at csl-dist@cs.utah.edu or +1-801-585-3271.
*
* The OSKit 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 GPL for more details. You should have
* received a copy of the GPL along with the OSKit; see the file COPYING. If
* not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
*/
/*
* The mark & check code for checking for memory leaks.
*
* Call malloc_mark(), then at a later point when the
* memory image should be (effectively) unchanged--all
* malloc'd memory has been free'd--call malloc_check().
*
* Hey, its not Purify(TM), but it works.
*/
#include <stdio.h>
#include "memdebug.h"
/*
* memdebug_mark()
*
* Mark all existing blocks in the list.
*/
void
memdebug_mark(void)
{
memdebug_mhead *h;
memdebug_printf("MALLOC_MARK()\n");
mem_lock();
for (h = memdebug_all_head.next; h != &memdebug_all_head; h = h->next)
h->flags |= MARKED_FLAG;
mem_unlock();
}
/*
* memdebug_check
*
* Any block that isn't marked, was created after the last call to
* memdebug_mark(), and is an error.
*/
void
memdebug_check(void)
{
memdebug_mhead *h;
int rc;
memdebug_printf("MALLOC_CHECK():\n");
mem_lock();
for (h = memdebug_all_head.next; h != &memdebug_all_head; h = h->next)
{
if (!(h->flags & MARKED_FLAG))
{
memdebug_printf("MALLOC BOGOSITY: Unfreed block. addr = %p\n", h + 1);
memdebug_bogosity(h);
}
/* Check validity of all recorded ptrs... */
rc = memdebug_traced_ptrchk(h + 1, 0, 0);
if (rc == -1)
break; /* Can't trust the next pointer */
}
mem_unlock();
memdebug_printf("MALLOC_CHECK() done\n");
}
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