bheapseg.c

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C语言 代码 · 共 56 行

/****************************************************************************
*
*                            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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* Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
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****************************************************************************/


#include "dll.h"        // needs to be first
#include "variety.h"
#include <malloc.h>
#include "heap.h"

__segment __bheap = 0;

_WCRTLINK __segment _bheapseg( size_t size )
{
    __segment   seg;
    struct heapblk __based(seg) *p;

    seg = __AllocSeg( size );
    if( seg == 0 )  return( _NULLSEG );
    p = 0;
    p->nextseg = __bheap;
    __bheap = seg;
    seg = p->nextseg;
    if( seg != 0 ) {
        p->prevseg = __bheap;
    }
    return( __bheap );
}