xrpl::IntrusiveRefCounts::RefCountPair Struct Reference

Unpack the count and tag fields from the packed atomic integer form. More...

Collaboration diagram for xrpl::IntrusiveRefCounts::RefCountPair:

Public Member Functions
	RefCountPair (FieldType v) noexcept
	RefCountPair (CountType s, CountType w) noexcept
FieldType	combinedValue () const noexcept
	Convert back to the packed integer form.

Public Attributes
CountType	strong
CountType	weak
FieldType	partialDestroyStartedBit {0}
	The partialDestroyStartedBit is set to on when the partial destroy function is started.
FieldType	partialDestroyFinishedBit {0}
	The partialDestroyFinishedBit is set to on when the partial destroy function has finished.

Static Public Attributes
static constexpr CountType	kMaxStrongValue
static constexpr CountType	kMaxWeakValue
static constexpr CountType	kCheckStrongMaxValue = kMaxStrongValue - 32
	Put an extra margin to detect when running up against limits.
static constexpr CountType	kCheckWeakMaxValue = kMaxWeakValue - 32

Detailed Description

Unpack the count and tag fields from the packed atomic integer form.

Definition at line 197 of file IntrusiveRefCounts.h.

Constructor & Destructor Documentation

RefCountPair() [1/2]

xrpl::IntrusiveRefCounts::RefCountPair::RefCountPair ( IntrusiveRefCounts::FieldType v )

noexcept

Definition at line 419 of file IntrusiveRefCounts.h.

RefCountPair() [2/2]

xrpl::IntrusiveRefCounts::RefCountPair::RefCountPair ( IntrusiveRefCounts::CountType s, IntrusiveRefCounts::CountType w )

noexcept

Definition at line 431 of file IntrusiveRefCounts.h.

Member Function Documentation

combinedValue()

IntrusiveRefCounts::FieldType xrpl::IntrusiveRefCounts::RefCountPair::combinedValue ( ) const

nodiscardnoexcept

Convert back to the packed integer form.

Definition at line 443 of file IntrusiveRefCounts.h.

Member Data Documentation

strong

CountType xrpl::IntrusiveRefCounts::RefCountPair::strong

Definition at line 199 of file IntrusiveRefCounts.h.

weak

CountType xrpl::IntrusiveRefCounts::RefCountPair::weak

Definition at line 200 of file IntrusiveRefCounts.h.

partialDestroyStartedBit

FieldType xrpl::IntrusiveRefCounts::RefCountPair::partialDestroyStartedBit {0}

The partialDestroyStartedBit is set to on when the partial destroy function is started.

It is not a boolean; it is a uint32 with all bits zero with the possible exception of the partialDestroyStartedMask bit. This is done so it can be directly masked into the combinedValue.

Definition at line 208 of file IntrusiveRefCounts.h.

partialDestroyFinishedBit

FieldType xrpl::IntrusiveRefCounts::RefCountPair::partialDestroyFinishedBit {0}

The partialDestroyFinishedBit is set to on when the partial destroy function has finished.

Definition at line 213 of file IntrusiveRefCounts.h.

kMaxStrongValue

CountType xrpl::IntrusiveRefCounts::RefCountPair::kMaxStrongValue

staticconstexpr

Initial value:

                                       =
static_cast<CountType>((kOne << kStrongCountNumBits) - 1)

Definition at line 223 of file IntrusiveRefCounts.h.

kMaxWeakValue

CountType xrpl::IntrusiveRefCounts::RefCountPair::kMaxWeakValue

staticconstexpr

Initial value:

                                     =
static_cast<CountType>((kOne << kWeakCountNumBits) - 1)

Definition at line 225 of file IntrusiveRefCounts.h.

kCheckStrongMaxValue

CountType xrpl::IntrusiveRefCounts::RefCountPair::kCheckStrongMaxValue = kMaxStrongValue - 32

staticconstexpr

Put an extra margin to detect when running up against limits.

This is only used in debug code, and is useful if we reduce the number of bits in the strong and weak counts (to 16 and 14 bits).

Definition at line 232 of file IntrusiveRefCounts.h.

kCheckWeakMaxValue

CountType xrpl::IntrusiveRefCounts::RefCountPair::kCheckWeakMaxValue = kMaxWeakValue - 32

staticconstexpr

Definition at line 233 of file IntrusiveRefCounts.h.