/****************************************************************************
*
*                            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
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*    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
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*  ========================================================================
*
* 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"

/* return the number of times that _nmalloc can be called to allocate
   and item "size" bytes from the near heap. */

_WCRTLINK unsigned int _freect( size_t size )
    {
        unsigned int count;
        size_t memsize;
        size_t size_of_chunk;
        frlptr pnext;
        mheapptr mhp;

        count = 0;
        size_of_chunk = (size + TAG_SIZE + ROUND_SIZE) & ~ROUND_SIZE;
        if( size_of_chunk < size )  return( 0 );
        if( size_of_chunk < FRL_SIZE ) {
            size_of_chunk = FRL_SIZE;
        }
        _AccessNHeap();
        for( mhp = __nheapbeg; mhp != NULL; mhp = mhp->next ) {
            pnext = mhp->freehead.next;
            while( pnext != (frlptr) &mhp->freehead ) {
                memsize = pnext->len;
                count += memsize / size_of_chunk;
                pnext = pnext->next;
            }
        }
        _ReleaseNHeap();
        return( count );
    }
