System.LocalDataStoreMgr.AllocateDataSlot C# (CSharp) Method

    	public LocalDataStoreSlot AllocateDataSlot()
    	{
            bool tookLock = false;
            RuntimeHelpers.PrepareConstrainedRegions();
            try {
                Monitor.ReliableEnter(this, ref tookLock);
        		int i;		
        		LocalDataStoreSlot slot;

        		// Retrieve the current size of the table.
        		int SlotTableSize = m_SlotInfoTable.Length;

				// Check if there are any slots left.
				if (m_FirstAvailableSlot < SlotTableSize)
				{
					// Save the first available slot.
					slot = new LocalDataStoreSlot(this, m_FirstAvailableSlot);
       				m_SlotInfoTable[m_FirstAvailableSlot] = DataSlotOccupied;

					// Find the next available slot.
					for (i=m_FirstAvailableSlot+1; i < SlotTableSize; ++i)
	        			if (0 == (m_SlotInfoTable[i] & DataSlotOccupied))
							break;

					// Save the new "first available slot".
					m_FirstAvailableSlot = i;

					// Return the slot index.
					return slot;
				}

        		// The table is full so we need to increase its size.
        		int NewSlotTableSize;
        		if (SlotTableSize < SlotTableDoubleThreshold)
        		{
        			// The table is still relatively small so double it.
        			NewSlotTableSize = SlotTableSize * 2;
        		}
        		else
        		{
        			// The table is relatively large so simply increase its size by a given amount.
        			NewSlotTableSize = SlotTableSize + LargeSlotTableSizeIncrease;
        		}

        		// Allocate the new slot info table.
        		byte[] NewSlotInfoTable = new byte[NewSlotTableSize];

        		// Copy the old array into the new one.
        		Array.Copy(m_SlotInfoTable, NewSlotInfoTable, SlotTableSize);
        		m_SlotInfoTable = NewSlotInfoTable;

        		// SlotTableSize is the index of the first empty slot in the expanded table.
				slot = new LocalDataStoreSlot(this, SlotTableSize);
        		m_SlotInfoTable[SlotTableSize] = DataSlotOccupied;
				m_FirstAvailableSlot = SlotTableSize + 1;

        		// Return the selected slot
        		return slot;			
        	}
            finally {
                if (tookLock)
                    Monitor.Exit(this);
            }
	    }