forked from enlightenment/efl
eina: add helper to return already known to fail future.
This commit is contained in:
parent
f05a799daa
commit
e474edc9f6
|
@ -814,6 +814,27 @@ eina_future_resolved(Eina_Future_Scheduler *scheduler, Eina_Value value)
|
|||
return NULL;
|
||||
}
|
||||
|
||||
EAPI Eina_Future *
|
||||
eina_future_rejected(Eina_Future_Scheduler *scheduler, Eina_Error err)
|
||||
{
|
||||
Eina_Promise *p;
|
||||
Eina_Future *f;
|
||||
|
||||
EINA_SAFETY_ON_NULL_GOTO(scheduler, error);
|
||||
|
||||
p = eina_promise_new(scheduler, _dummy_cancel, NULL);
|
||||
EINA_SAFETY_ON_NULL_GOTO(p, error);
|
||||
|
||||
f = eina_future_new(p);
|
||||
EINA_SAFETY_ON_NULL_GOTO(f, error);
|
||||
|
||||
eina_promise_reject(p, err);
|
||||
return f;
|
||||
|
||||
error:
|
||||
return NULL;
|
||||
}
|
||||
|
||||
EAPI Eina_Future *
|
||||
eina_future_then_from_desc(Eina_Future *prev, const Eina_Future_Desc desc)
|
||||
{
|
||||
|
|
|
@ -785,6 +785,33 @@ EAPI Eina_Future *eina_future_new(Eina_Promise *p) EINA_ARG_NONNULL(1) EINA_WARN
|
|||
*/
|
||||
EAPI Eina_Future *eina_future_resolved(Eina_Future_Scheduler *scheduler, Eina_Value value) EINA_ARG_NONNULL(1);
|
||||
|
||||
/**
|
||||
* Creates a new future that is already rejected to a specified error.
|
||||
*
|
||||
* This function creates a new future with an already known error,
|
||||
* that will be resolved and dispatched by the given @a scheduler as
|
||||
* usual.
|
||||
*
|
||||
* This is a helper that behaves the same as eina_promise_new()
|
||||
* followed by eina_future_new() and then eina_promise_rejected().
|
||||
*
|
||||
* Futures can also be canceled using eina_future_cancel(), which will
|
||||
* cause the whole chain to be cancelled alongside with any pending
|
||||
* promise.
|
||||
*
|
||||
* @param scheduler The scheduler to use.
|
||||
* @param err An Eina_Error value
|
||||
*
|
||||
* @return The future or @c NULL on error.
|
||||
*
|
||||
* @see eina_promise_new()
|
||||
* @see eina_future_new()
|
||||
* @see eina_promise_reject()
|
||||
* @see eina_promise_resolve()
|
||||
* @see eina_future_cancel()
|
||||
*/
|
||||
EAPI Eina_Future *eina_future_rejected(Eina_Future_Scheduler *scheduler, Eina_Error err);
|
||||
|
||||
/**
|
||||
* Register an Eina_Future_Desc to be used when the future is resolve/rejected.
|
||||
*
|
||||
|
|
Loading…
Reference in New Issue