From 124de0785901f1182bb55b34c03c6370bd511043 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc=20Andr=C3=A9=20Tanner?= <mat@brain-dump.org>
Date: Sat, 6 May 2017 22:58:09 +0200
Subject: vis: add vis_interrupt{,requested} functions

---
 vis.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'vis.h')

diff --git a/vis.h b/vis.h
index 60cbb12..a73753e 100644
--- a/vis.h
+++ b/vis.h
@@ -152,6 +152,18 @@ void vis_resume(Vis*);
  * @endrst
  */
 bool vis_signal_handler(Vis*, int signum, const siginfo_t *siginfo, const void *context);
+/**
+ * Interrupt long running operation.
+ * @rst
+ * .. warning:: There is no guarantee that a long running operation is actually
+ *              interrupted. It is analogous to cooperative multitasking where
+ *              the operation has to voluntarily yield control.
+ * .. note:: It is invoked from `vis_signal_handler` when receiving ``SIGINT``.
+ * @endrst
+ */
+void vis_interrupt(Vis*);
+/** Check whether interruption was requested. */
+bool vis_interrupt_requested(Vis*);
 /**
  * @}
  * @defgroup vis_draw
-- 
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