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[PATCH 02/15] python/aqmp: add .empty() method to EventListener


From: John Snow
Subject: [PATCH 02/15] python/aqmp: add .empty() method to EventListener
Date: Fri, 17 Sep 2021 01:40:34 -0400

Synchronous clients may want to know if they're about to block waiting
for an event or not. A method such as this is necessary to implement a
compatible interface for the old QEMUMonitorProtocol using the new async
internals.

Signed-off-by: John Snow <jsnow@redhat.com>
---
 python/qemu/aqmp/events.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/python/qemu/aqmp/events.py b/python/qemu/aqmp/events.py
index fb81d21610..271899f6b8 100644
--- a/python/qemu/aqmp/events.py
+++ b/python/qemu/aqmp/events.py
@@ -556,6 +556,12 @@ async def get(self) -> Message:
         """
         return await self._queue.get()
 
+    def empty(self) -> bool:
+        """
+        Return `True` if there are no pending events.
+        """
+        return self._queue.empty()
+
     def clear(self) -> None:
         """
         Clear this listener of all pending events.
-- 
2.31.1




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