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