sysio::chain::resource_limits::impl Namespace Reference

Classes
struct	exponential_decay_accumulator
struct	exponential_moving_average_accumulator
struct	ratio

Functions
template<typename T >
ratio< T >	make_ratio (T n, T d)
template<typename T >
T	operator* (T value, const ratio< T > &r)
template<typename UnsignedIntType >
constexpr UnsignedIntType	integer_divide_ceil (UnsignedIntType num, UnsignedIntType den)
template<typename LesserIntType , typename GreaterIntType >
constexpr auto	downgrade_cast (GreaterIntType val) -> std::enable_if_t< is_valid_downgrade_cast< LesserIntType, GreaterIntType > &&std::is_signed< LesserIntType >::value==std::is_signed< GreaterIntType >::value, LesserIntType >

Variables
template<typename LesserIntType , typename GreaterIntType >
constexpr bool	is_valid_downgrade_cast

Function Documentation

downgrade_cast()

template<typename LesserIntType , typename GreaterIntType >

auto sysio::chain::resource_limits::impl::downgrade_cast ( GreaterIntType val ) -> std::enable_if_t<is_valid_downgrade_cast<LesserIntType,GreaterIntType> && std::is_signed<LesserIntType>::value == std::is_signed<GreaterIntType>::value, LesserIntType>

constexpr

Specialization for Signedness matching integer types

Specialization for Signedness mismatching integer types

Definition at line 40 of file resource_limits_private.hpp.

      {
         const GreaterIntType max = std::numeric_limits<LesserIntType>::max();
         const GreaterIntType min = std::numeric_limits<LesserIntType>::min();
         SYS_ASSERT( val >= min && val <= max, rate_limiting_state_inconsistent, "Casting a higher bit integer value ${v} to a lower bit integer value which cannot contain the value, valid range is [${min}, ${max}]", ("v", val)("min", min)("max",max) );
         return LesserIntType(val);
      };

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integer_divide_ceil()

template<typename UnsignedIntType >

UnsignedIntType sysio::chain::resource_limits::impl::integer_divide_ceil ( UnsignedIntType num, UnsignedIntType den )

constexpr

Definition at line 25 of file resource_limits_private.hpp.

                                                                                               {
         return (num / den) + ((num % den) > 0 ? 1 : 0);
      }

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make_ratio()

template<typename T >

ratio< T > sysio::chain::resource_limits::impl::make_ratio	(	T	n,
		T	d )

Definition at line 14 of file resource_limits_private.hpp.

                                    {
         return ratio<T>{n, d};
      }

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operator*()

template<typename T >

T sysio::chain::resource_limits::impl::operator*	(	T	value,
		const ratio< T > &	r )

Definition at line 19 of file resource_limits_private.hpp.

                                               {
         SYS_ASSERT(r.numerator == T(0) || std::numeric_limits<T>::max() / r.numerator >= value, rate_limiting_state_inconsistent, "Usage exceeds maximum value representable after extending for precision");
         return (value * r.numerator) / r.denominator;
      }

Variable Documentation

is_valid_downgrade_cast

template<typename LesserIntType , typename GreaterIntType >

bool sysio::chain::resource_limits::impl::is_valid_downgrade_cast

constexpr

Initial value:

=
         std::is_integral<LesserIntType>::value &&  
         std::is_integral<GreaterIntType>::value && 
         (std::numeric_limits<LesserIntType>::max() <= std::numeric_limits<GreaterIntType>::max())

Definition at line 31 of file resource_limits_private.hpp.