Class UserId

src/jrd/scl.h:94–391

const USHORT USR_sysdba		= 4;		// User detected as SYSDBA

class UserId
{
public:
	// Arbitrary size bitmask
	template <unsigned N>
	class Bits
	{
		static const unsigned shift = 3;
		static const unsigned bitmask = (1 << shift) - 1;

		static const unsigned L = (N >> shift) + (N & bitmask ? 1 : 0);

	public:
		static const unsigned BYTES_COUNT = L;

		Bits()
		{
			clearAll();
		}

		Bits(const Bits& b)
		{
			assign(b);
		}

		Bits& operator=(const Bits& b)
		{
			assign(b);
			return *this;
		}

		Bits& set(unsigned i)
		{
			fb_assert(i < N);
			if (i < N)
				data[index(i)] |= mask(i);
			return *this;
		}

		Bits& setAll()
		{
			memset(data, ~0, sizeof data);
			return *this;
		}

		Bits& clear(unsigned i)
		{
			fb_assert(i < N);
			if (i < N)
				data[index(i)] &= ~mask(i);
			return *this;
		}

		Bits& clearAll()
		{
			memset(data, 0, sizeof data);
			return *this;
		}