diff mbox series

[v2,10/16] python/machine.py: Handle None events in event_wait

Message ID 20200602214528.12107-11-jsnow@redhat.com
State New
Headers show
Series [v2,01/16] python/qmp.py: Define common types | expand

Commit Message

John Snow June 2, 2020, 9:45 p.m. UTC 
If the timeout is 0, we can get None back. Handle this explicitly.

Signed-off-by: John Snow <jsnow@redhat.com>
---
 python/qemu/machine.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/python/qemu/machine.py b/python/qemu/machine.py
index 2f12cebde40..a835b7550da 100644
--- a/python/qemu/machine.py
+++ b/python/qemu/machine.py
@@ -32,7 +32,7 @@ 
 from types import TracebackType
 
 from . import qmp
-from .qmp import SocketAddrT
+from .qmp import SocketAddrT, QMPMessage
 
 LOG = logging.getLogger(__name__)
 
@@ -553,6 +553,8 @@  def _match(event):
                     return True
             return False
 
+        event: Optional[QMPMessage]
+
         # Search cached events
         for event in self._events:
             if _match(event):
@@ -562,6 +564,8 @@  def _match(event):
         # Poll for new events
         while True:
             event = self._qmp.pull_event(wait=timeout)
+            if event is None:
+                break
             if _match(event):
                 return event
             self._events.append(event)