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



some system calls 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 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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