iox2::internal::CallbackContext< T > Class Template Reference

#include <callback_context.hpp>

Public Member Functions
	CallbackContext (const T &ptr)
auto	value () const -> const T &

Detailed Description

template<typename T>
class iox2::internal::CallbackContext< T >

Building block to provide a type-safe context pointer to a C callback that has a void* context argument. The context could be hereby a user provided clojure with capture or any other C++ object.

Example

void some_c_callback(void* context) {
   auto ctx = internal::ctx_cast<SomeType>(context);
   ctx->value(); // access underlying my_context_object
}
 
SomeType my_context_object;
auto ctx = internal::ctx(my_context_object);
some_c_callback(static_cast<void*>(&ctx));

Definition at line 47 of file callback_context.hpp.

Constructor & Destructor Documentation

CallbackContext()

template<typename T >

iox2::internal::CallbackContext< T >::CallbackContext ( const T &  ptr )

inlineexplicit

Definition at line 49 of file callback_context.hpp.

Member Function Documentation

value()

template<typename T >

auto iox2::internal::CallbackContext< T >::value ( ) const -> const T&

inline

Definition at line 53 of file callback_context.hpp.

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

• iox2/internal/callback_context.hpp