bitbake: process: Add some extra server startup logs

We have cases where the server is being started but we're not seeing any messages
from it. Add some earlier logging so we can try and better understand where
issues may be occurring.

(Bitbake rev: 10a6a48c0c5a2fe2051e90143e66075356853971)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/server/process.py

@@ -100,7 +100,8 @@ class ProcessServer(multiprocessing.Process):
             else:
                 self.bitbake_lock.write("%s\n" % (os.getpid()))
             self.bitbake_lock.flush()
-        except:
+        except Exception as e:
+            print("Error writing to lock file: %s" % str(e))
             pass
 
         if self.cooker.configuration.profile:
@@ -132,6 +133,7 @@ class ProcessServer(multiprocessing.Process):
         fds = [self.sock]
         if self.xmlrpc:
             fds.append(self.xmlrpc)
+        print("Entering server connection loop")
         while not self.quit:
             if self.sock in ready:
                 self.controllersock, address = self.sock.accept()
@@ -388,6 +390,7 @@ class BitBakeServer(object):
         os.close(self.readypipein)
 
     def _startServer(self):
+        print("Starting bitbake server pid %d" % os.getpid())
         server = ProcessServer(self.bitbake_lock, self.sock, self.sockname)
         self.configuration.setServerRegIdleCallback(server.register_idle_function)