[Qemu-devel] [PATCH 3/4] scripts/qemu.py: tiny enhancement for event_wiat

[Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>]

- add comment
- allow int timeout and disallow bool (which has special
  meaning for pull_event())
- remove unreachable 'return None'

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 scripts/qemu.py | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/scripts/qemu.py b/scripts/qemu.py
index 9bfdf6d37d..8763335254 100644
--- a/scripts/qemu.py
+++ b/scripts/qemu.py
@@ -291,7 +291,13 @@ class QEMUMachine(object):
         branch processing on match's value None
            {"foo": {"bar": 1}} matches {"foo": None}
            {"foo": {"bar": 1}} does not matches {"foo": {"baz": None}}
+
+        @raise QMPTimeoutError: If timeout period elapses.
+        @raise QMPConnectError: If some other error occurred.
         '''
+
+        assert isinstance(timeout, float) or isinstance(timeout, int)
+
         def event_match(event, match=None):
             if match is None:
                 return True
@@ -316,13 +322,11 @@ class QEMUMachine(object):
 
         # Poll for new events
         while True:
-            event = self._qmp.pull_event(wait=timeout)
+            event = self._qmp.pull_event(wait=float(timeout))
             if (event['event'] == name) and event_match(event, match):
                 return event
             self._events.append(event)
 
-        return None
-
     def get_log(self):
         '''
         After self.shutdown or failed qemu execution, this returns the output
-- 
2.11.1