bitbake utils.py: Fix ocassional locking glitch with a better retrying mechanism

git-svn-id: https://svn.o-hand.com/repos/poky/trunk@5415 311d38ba-8fff-0310-9ca6-ca027cbcb966

1 files changed, 12 insertions, 9 deletions

diff --git a/bitbake/lib/bb/utils.py b/bitbake/lib/bb/utils.py
index d3701acca7..18fc9f7252 100644
--- a/bitbake/lib/bb/utils.py
+++ b/bitbake/lib/bb/utils.py
@@ -246,15 +246,18 @@ def lockfile(name):
         # This implementation is unfair since the last person to request the 
         # lock is the most likely to win it.
 
-        lf = open(name, "a+")
-        fcntl.flock(lf.fileno(), fcntl.LOCK_EX)
-        statinfo = os.fstat(lf.fileno())
-        if os.path.exists(lf.name):
-           statinfo2 = os.stat(lf.name)
-           if statinfo.st_ino == statinfo2.st_ino:
-               return lf
-        # File no longer exists or changed, retry
-        lf.close
+        try:
+            lf = open(name, "a+")
+            fcntl.flock(lf.fileno(), fcntl.LOCK_EX)
+            statinfo = os.fstat(lf.fileno())
+            if os.path.exists(lf.name):
+               statinfo2 = os.stat(lf.name)
+               if statinfo.st_ino == statinfo2.st_ino:
+                   return lf
+            # File no longer exists or changed, retry
+            lf.close
+        except Exception, e:
+            continue
 
 def unlockfile(lf):
     """