59 lines
2.2 KiB
C
59 lines
2.2 KiB
C
/****************************************************************************
|
|
*
|
|
* Open Watcom Project
|
|
*
|
|
* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
|
|
*
|
|
* ========================================================================
|
|
*
|
|
* This file contains Original Code and/or Modifications of Original
|
|
* Code as defined in and that are subject to the Sybase Open Watcom
|
|
* Public License version 1.0 (the 'License'). You may not use this file
|
|
* except in compliance with the License. BY USING THIS FILE YOU AGREE TO
|
|
* ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
|
|
* provided with the Original Code and Modifications, and is also
|
|
* available at www.sybase.com/developer/opensource.
|
|
*
|
|
* The Original Code and all software distributed under the License are
|
|
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
|
|
* EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
|
|
* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
|
|
* NON-INFRINGEMENT. Please see the License for the specific language
|
|
* governing rights and limitations under the License.
|
|
*
|
|
* ========================================================================
|
|
*
|
|
* Description: WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
|
|
* DESCRIBE IT HERE!
|
|
*
|
|
****************************************************************************/
|
|
|
|
|
|
//#include "dll.h" // needs to be first
|
|
#include "variety.h"
|
|
#include <stddef.h>
|
|
#include <malloc.h>
|
|
#include "heap.h"
|
|
#include "heapacc.h"
|
|
|
|
_WCRTLINK size_t _memmax( void ) /* return size of largest free piece from near heap */
|
|
{
|
|
size_t maxlen, size;
|
|
frlptr pnext;
|
|
mheapptr mhp;
|
|
|
|
maxlen = 0;
|
|
_AccessNHeap();
|
|
for( mhp = __nheapbeg; mhp != NULL; mhp = mhp->next ) {
|
|
pnext = mhp->freehead.next;
|
|
while( pnext != (frlptr) &mhp->freehead ) {
|
|
size = ((pnext->len - TAG_SIZE) & ~ROUND_SIZE);
|
|
if( size > maxlen ) maxlen = size;
|
|
pnext = pnext->next;
|
|
}
|
|
}
|
|
_ReleaseNHeap();
|
|
return( maxlen );
|
|
}
|