Detailed Description

template<typename Ptr, typename NullDerefAction = default_null_deref_action>
requires std::is_default_constructible_v<NullDerefAction> && requires (NullDerefAction action) { NullDerefAction(); }
class seastar::checked_ptr< Ptr, NullDerefAction >

seastar::checked_ptr class is a wrapper class that may be used with any pointer type (smart like std::unique_ptr or raw pointers like int*).

The seastar::checked_ptr object will invoke the NullDerefAction functor if it is dereferenced when the underlying pointer is not engaged.

It may still be assigned, compared to other seastar::checked_ptr objects or moved without limitations.

The default NullDerefAction will throw a seastar::default_null_deref_action exception.

Template Parameters

NullDerefAction a functor that is invoked when a user tries to dereference a not engaged pointer.

#include <seastar/core/checked_ptr.hh>

Public Types
using	element_type = typename std::pointer_traits< Ptr >::element_type
	Underlying element type.

using	pointer = element_type *
	Type of the pointer to the underlying element.

Public Member Functions
	checked_ptr (std::nullptr_t) noexcept(std::is_nothrow_default_constructible_v< checked_ptr< Ptr, NullDerefAction > >)

	checked_ptr (Ptr &&ptr) noexcept(std::is_nothrow_move_constructible_v< Ptr >)

	checked_ptr (const Ptr &p) noexcept(std::is_nothrow_copy_constructible_v< Ptr >)

Checked Methods
These methods start with invoking a NullDerefAction functor if the underlying pointer is not engaged.
pointer	get () const

const Ptr &	operator-> () const

Ptr &	operator-> ()

const element_type &	operator* () const

element_type &	operator* ()

Unchecked methods
These methods may be invoked when the underlying pointer is not engaged.
	operator bool () const

bool	operator== (const checked_ptr &other) const

bool	operator!= (const checked_ptr &other) const

size_t	hash () const