py: Switch to non-blocking eventfd

Blocking wait can be easily implemented on top in Python, so rather than
supporting only blocking reads, or supporting both non-blocking and
blocking reads, let's support only non-blocking reads.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/test/py/unittests.py b/test/py/unittests.py
index 9adc4337..6dea80fc 100755
--- a/test/py/unittests.py
+++ b/test/py/unittests.py
@@ -207,9 +207,16 @@ class SimpleCaptureMethods(CameraTesterBase):
         reqs = None
         gc.collect()
 
+        sel = selectors.DefaultSelector()
+        sel.register(cm.event_fd, selectors.EVENT_READ)
+
         reqs = []
 
         while True:
+            events = sel.select()
+            if not events:
+                continue
+
             ready_reqs = cm.get_ready_requests()
 
             reqs += ready_reqs