L4::Ipc::Opt< T > Struct Template Reference

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

#include <ipc_types>

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

Public Member Functions
	Opt () noexcept
	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	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
	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.

Definition at line 147 of file ipc_types.

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

• l4/sys/cxx/ipc_types