NTSTATUS NTAPI ExInitializeZone	(	PZONE_HEADER	Zone,
		ULONG	BlockSize,
		PVOID	InitialSegment,
		ULONG	InitialSegmentSize
	)

Definition at line 105 of file zone.c.

{
    ULONG i;
    ULONG_PTR Entry;

    /*
     * BlockSize and Segment must be 8-byte aligned.
     * Blocksize cannot exceed Segment Size.
     */
    if (((ULONG_PTR)InitialSegment & 7) ||
        (InitialSegmentSize & 7) ||
        (BlockSize > InitialSegmentSize))
    {
        DPRINT1("Invalid ExInitializeZone Alignment and/or Size\n");
        return STATUS_INVALID_PARAMETER;
    }

    /* Set the Zone Header */
    Zone->BlockSize = BlockSize;

    /* Link empty list */
    Zone->FreeList.Next = NULL;
    Zone->SegmentList.Next = NULL;
    PushEntryList(&Zone->SegmentList,
                  &((PZONE_SEGMENT_HEADER)InitialSegment)->SegmentList);
    ((PZONE_SEGMENT_HEADER)InitialSegment)->Reserved = NULL;

    /* Get first entry */
    Entry = (ULONG_PTR)InitialSegment + sizeof(ZONE_SEGMENT_HEADER);

    /* Loop through the segments */
    for (i = sizeof(ZONE_SEGMENT_HEADER);
         i <= InitialSegmentSize - BlockSize;
         i+= BlockSize)
    {
        /* Link the Free and Segment Lists */
        PushEntryList(&Zone->FreeList, (PSINGLE_LIST_ENTRY)Entry);

        /* Go to the next entry */
        Entry += Zone->BlockSize;
    }

    /* Update Segment Size */
    Zone->TotalSegmentSize += i;

    /* Return success */
    return STATUS_SUCCESS;
}

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