fixes #966 - deadlock in cache.disk

2015-05-12 09:12:28 +08:00
parent 587ff56a94
commit 4b14a87463
1 changed files with 7 additions and 2 deletions
--- a/gluon/cache.py
+++ b/gluon/cache.py
@@ -473,9 +473,14 @@ class CacheOnDisk(CacheAbstract):
        if item and ((dt is None) or (item[0] > now - dt)):
            value = item[1]
        else:
-            value = f()
+            try:
+                value = f()
+            except:
+                self.storage.release(CacheAbstract.cache_stats_name)
+                self.storage.release(key)
+                raise
            self.storage[key] = (now, value)
-            self.storage.safe_apply(CacheAbstract.cache_stats_name, inc_misses, 
+            self.storage.safe_apply(CacheAbstract.cache_stats_name, inc_misses,
                                    default_value={'hit_total': 0, 'misses': 0})

        self.storage.release(CacheAbstract.cache_stats_name)