cedric pushed a commit to branch master.
http://git.enlightenment.org/core/efl.git/commit/?id=e474edc9f671419e433a0c52161149b89bee08c8
commit e474edc9f671419e433a0c52161149b89bee08c8
Author: Cedric BAIL <ced...@osg.samsung.com>
Date: Wed Oct 11 16:52:16 2017 -0700
eina: add helper to return already known to fail future.
---
src/lib/eina/eina_promise.c | 21 +++++++++++++++++++++
src/lib/eina/eina_promise.h | 27 +++++++++++++++++++++++++++
2 files changed, 48 insertions(+)
diff --git a/src/lib/eina/eina_promise.c b/src/lib/eina/eina_promise.c
index 1fbac60f65..649b6e97b0 100644
--- a/src/lib/eina/eina_promise.c
+++ b/src/lib/eina/eina_promise.c
@@ -815,6 +815,27 @@ eina_future_resolved(Eina_Future_Scheduler *scheduler,
Eina_Value value)
}
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)
{
EINA_FUTURE_CHECK_GOTO(prev, err_future);
diff --git a/src/lib/eina/eina_promise.h b/src/lib/eina/eina_promise.h
index 323dee3288..0ffd487cea 100644
--- a/src/lib/eina/eina_promise.h
+++ b/src/lib/eina/eina_promise.h
@@ -786,6 +786,33 @@ 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.
*
* With this function a callback and data is attached to the future and then
--
