io_wrapper_set_app_context_and_dtor

io_wrapper_set_app_context_and_dtor — Set an application-specific context value and destructor

#include "io_wrapper.h"

| void **io_wrapper_set_app_context_and_dtor** ( | io, |   | |   | context, |   | |   | on_destroy); |   |

io_object * <var class="pdparam">io</var>; void * <var class="pdparam">context</var>; void(*)(io_object *) <var class="pdparam">on_destroy</var>;

Set an application-specific context value and destructor.

An io_object can store one context value for "application use" (not an io wrapper implementation). The destructor will be called just prior to the final destruction of the IO object, allowing an application to take some action at that point.

Parameters

Return Value

This function returns void.

Threading

It is legal to call this function in any thread.

“io_object”