windows-server-2003/base/mvdm/wow16/write/heapmain.c

/************************************************************/
/* Windows Write, Copyright 1985-1992 Microsoft Corporation */
/************************************************************/

#define NOGDICAPMASKS
#define NOVIRTUALKEYCODES
#define NOWINMESSAGES
#define NOWINSTYLES
#define NOSYSMETRICS
#define NOMENUS
#define NOICON
#define NOKEYSTATE
#define NOSYSCOMMANDS
#define NOSHOWWINDOW
#define NOCTLMGR
#define NOCLIPBOARD
#define NOMSG
#define NOGDI
#define NOMB
#define NOSOUND
#define NOCOMM
#define NOPEN
#define NOBRUSH
#define NOFONT
#define NOWNDCLASS
#include <windows.h>

#include "mw.h"
/*
    HeapManage.c - several routines to manage the heap, including changing
            the finger table, compacting the heap in general, and checking the
            heap for consistency.
            It also contains the routines which were once in heapNew.
*/
#include "code.h"
#include "heapDefs.h"
#include "heapData.h"
#define NOSTRUNDO
#define NOSTRMERGE
#include "str.h"
#include "macro.h"
#define NOUAC
#include "cmddefs.h"
#include "filedefs.h"
#include "docdefs.h"


extern CHAR       (*rgbp)[cbSector];
extern CHAR       *rgibpHash;
extern struct BPS *mpibpbps;
extern int        ibpMax;
extern int        iibpHashMax;
extern int        cwInitStorage;
extern typeTS     tsMruBps;


FTryGrow(unsigned);


PFGR  HAllocate(cwRequest)
unsigned cwRequest;
{
unsigned cb = cwRequest * sizeof(int);
HANDLE hTemp;

    Assert(*(pLocalHeap+1) == 0);

    if (cwRequest >= 0x8000)
        {
#ifdef DEBUG
        Assert(0);
        ErrorWithMsg(IDPMTRottenFile, " heapMan#1");
#else
        Error(IDPMTRottenFile);
#endif
        return((PFGR)hOverflow);
        }

    hTemp = LocalAlloc(LHND, cb);
    if (hTemp != NULL)
        return((PFGR)hTemp);
    else if (FTryGrow(cb))
        {
        return((PFGR)LocalAlloc(LHND, cb));
        }
    else
        {
#ifdef DEBUG
        ErrorWithMsg(IDPMTNoMemory, " heapMan#1");
#else
        Error(IDPMTNoMemory);
#endif
        return((PFGR)hOverflow);
        }
}

FChngSizeH(pfgrChng, cwRequest, fShrink)
PFGR pfgrChng;
int  cwRequest, fShrink;
{
unsigned cb = cwRequest * sizeof(int);
#ifdef DEBUG
PFGR pfgrNew;
#endif

    Assert(*(pLocalHeap+1) == 0);   /* Check for frozen heap */
    Assert(cwRequest >= 0);

    if ((
#ifdef DEBUG
    pfgrNew =
#endif
    (PFGR)LocalReAlloc( (HANDLE)pfgrChng, cb, LHND)) != NULL)
        {
        Assert( pfgrNew == pfgrChng );  /* Windows guarantees this for
                                           movable objects */
        return( TRUE );
        }
    else if (FTryGrow(cb))
        {
#ifdef DEBUG
        pfgrNew = 
#endif
        (PFGR)LocalReAlloc( (HANDLE)pfgrChng, cb, LHND);
        Assert( pfgrNew != (PFGR)NULL );
        Assert( pfgrNew == pfgrChng );
        return( TRUE );
        }
    else
        {
#ifdef DEBUG
        ErrorWithMsg( IDPMTNoMemory, " heapMan#2" );
#else
        Error( IDPMTNoMemory );
#endif
        return( FALSE );
        }
}



CHAR (**HszCreate(sz))[]
CHAR sz[];
{ /* Creates a heap block containing sz */
CHAR (**hsz)[];
int cch = CchSz(sz);
hsz = (CHAR (**)[]) HAllocate(CwFromCch(cch));
if (FNoHeap(hsz))
        return (CHAR (**)[])hOverflow;
bltbyte(sz, **hsz, cch);
return hsz;
}