Attribute for defining an optional RPC argument. More...

#include <ipc_types>

Inheritance diagram for L4::Ipc::Opt< T >:

Collaboration diagram for L4::Ipc::Opt< T >:

Public Member Functions
	Opt () noexcept=default
	Make an absent optional argument.
	Opt (T value) noexcept
	Make a present optional argument with the given value.
Opt &	operator= (T value) noexcept
	Assign a value to the optional argument (makes the argument present).
void	set_valid (bool valid=true) noexcept
	Set the argument to present or absent.
T *	operator-> () noexcept
	Get the pointer to the value.
T const *	operator-> () const noexcept
	Get the const pointer to the value.
T const &	value () const noexcept
	Get the value.
T &	value () noexcept
	Get the value.
bool	is_valid () const noexcept
	Get true if present, false if not.

Data Fields
T	_value {}
	The value.
bool	_valid = false
	True if the optional argument is present, false else.

Detailed Description

template<typename T>
struct L4::Ipc::Opt< T >

Attribute for defining an optional RPC argument.

Attention: Do not use in new code. It is solely used for the implementation of some legacy message formats and should generally not be needed for the definition of ordinary interfaces.

Definition at line 80 of file ipc_types.

The documentation for this struct was generated from the following file:

Public Member Functions