From 9fd7b24344a2bd187eee8280cc54eaef332c24b0 Mon Sep 17 00:00:00 2001
From: calvin <calvin@e7d03fd6-7b0d-0410-9947-9c21f3af8025>
Date: Wed, 1 Feb 2006 19:48:22 +0000
Subject: [PATCH] check return value of acquire()

git-svn-id: https://linkchecker.svn.sourceforge.net/svnroot/linkchecker/trunk/linkchecker@3034 e7d03fd6-7b0d-0410-9947-9c21f3af8025
---
 linkcheck/decorators.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/linkcheck/decorators.py b/linkcheck/decorators.py
index b0402da6..6dc4da5a 100644
--- a/linkcheck/decorators.py
+++ b/linkcheck/decorators.py
@@ -103,7 +103,13 @@ def _synchronized (lock, func):
         """
         Execute function synchronized.
         """
-        lock.acquire(True) # blocking
+        # acquire lock waiting indefinitely, with a maximum number of tries
+        tries = 1
+        while not lock.acquire():
+            time.sleep(0.5)
+            tries += 1
+            if tries > 5:
+                raise RuntimeError("Could not acquire lock")
         try:
             return func(*args, **kwargs)
         finally: