windows-server-2003/termsrv/drivers/rdp/inc/abacom.c

/****************************************************************************/
/* abacom.c                                                                 */
/*                                                                          */
/* BA code common to DD and WD                                              */
/*                                                                          */
/* Copyright(c) Microsoft 1997-1998                                         */
/****************************************************************************/


#ifdef DC_DEBUG

/****************************************************************************/
/* Name:      BACheckList                                                   */
/*                                                                          */
/* Purpose:   Check the integrity of the BA list                            */
/****************************************************************************/
void RDPCALL SHCLASS BACheckList(void)
{
    unsigned usedCount, freeCount;
    unsigned next;
    unsigned prev;
    UINT32 totalArea;
    
    DC_BEGIN_FN("BACheckList");

    /************************************************************************/
    /* Check used list                                                      */
    /************************************************************************/
    usedCount = 0;
    totalArea = 0;
    next = _pShm->ba.firstRect;
    prev = BA_INVALID_RECT_INDEX;
    while (next != BA_INVALID_RECT_INDEX)
    {
        TRC_ASSERT((_pShm->ba.bounds[next].inUse),
                    (TB,"BA used list entry not marked in use"));
        TRC_ASSERT((_pShm->ba.bounds[next].iPrev == prev),
                    (TB,"BA used list entry iPrev not correct (%u, expected %u)",
                    _pShm->ba.bounds[next].iPrev, prev));

        totalArea += _pShm->ba.bounds[next].area;
        usedCount++;
        prev = next;
        next = _pShm->ba.bounds[next].iNext;
    }

    TRC_ASSERT((usedCount == _pShm->ba.rectsUsed),
                (TB,"BA used list inconsistent count (%u, expected %u)",
                _pShm->ba.rectsUsed, usedCount));
    TRC_ASSERT((usedCount <= BA_TOTAL_NUM_RECTS),
                (TB,"Too many used list rectangles (%d)", usedCount));
    TRC_ASSERT((totalArea == _pShm->ba.totalArea),
                (TB,"BA totalArea not correct (shm=%u, elements=%u)",
                _pShm->ba.totalArea, totalArea));

    /************************************************************************/
    /* Check free list                                                      */
    /************************************************************************/
    freeCount = 0;
    next = _pShm->ba.firstFreeRect;
    while (next != BA_INVALID_RECT_INDEX)
    {
        TRC_ASSERT((!_pShm->ba.bounds[next].inUse),
                    (TB,"BA free list entry not marked free"));

        freeCount++;
        next = _pShm->ba.bounds[next].iNext;
    }

    TRC_ASSERT((freeCount == (BA_TOTAL_NUM_RECTS - _pShm->ba.rectsUsed)),
                (TB,"BA free list inconsistent count (%u, expected %u)",
                freeCount, (BA_TOTAL_NUM_RECTS - _pShm->ba.rectsUsed)));
    TRC_ASSERT((freeCount <= BA_TOTAL_NUM_RECTS),
                (TB,"Too many free list rectangles (%d)", freeCount));

    TRC_ASSERT(((freeCount + usedCount) == BA_TOTAL_NUM_RECTS),
                (TB,"Used+free (%u) != total rects", usedCount + freeCount));

    DC_END_FN();
}

#endif  // DC_DEBUG