[libvirt] [PATCH] add handling EINTR to test example of event loop

lvroyce at linux.vnet.ibm.com lvroyce at linux.vnet.ibm.com
Mon Jun 18 09:43:55 UTC 2012


From: lvroyce <lvroyce at linux.vnet.ibm.com>

some system call and signal will interrupt poll,
making event loop stops and fails to react events and keepalive message
from libvirt.
adding handling EINTR to poll to make it more robust

Signed-off-by: lvroyce <lvroyce at linux.vnet.ibm.com>
---
 examples/domain-events/events-python/event-test.py |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/examples/domain-events/events-python/event-test.py b/examples/domain-events/events-python/event-test.py
index 96dc268..b446c21 100644
--- a/examples/domain-events/events-python/event-test.py
+++ b/examples/domain-events/events-python/event-test.py
@@ -188,7 +188,13 @@ class virEventLoopPure:
                 sleep = (next - now) / 1000.0
 
         debug("Poll with a sleep of %d" % sleep)
-        events = self.poll.poll(sleep)
+        try:
+            events = self.poll.poll(sleep)
+        except select.error, e:
+                self.runningPoll = False
+                if not e.errno in (errno.EINTR, errno.EAGAIN):
+                    raise
+                return
 
         # Dispatch any file handle events that occurred
         for (fd, revents) in events:
-- 
1.7.7.6




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