diff options
Diffstat (limited to 'repoze/lru/__init__.py')
| -rw-r--r-- | repoze/lru/__init__.py | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/repoze/lru/__init__.py b/repoze/lru/__init__.py index 64bd7ba..0711c7c 100644 --- a/repoze/lru/__init__.py +++ b/repoze/lru/__init__.py @@ -47,9 +47,19 @@ class LRUCache(object): data = self.data lock = self.lock - end = hand - 1 - if end < 0: - end = maxpos + entry = self.data.get(key) + if entry is not None: + lock.acquire() + try: + # We already have key. Only make sure data is up to date and to + # remember that it was used. + pos, old_val = entry + if old_val is not val: + data[key] = (pos, val) + self.clock[pos]['ref'] = True + return + finally: + lock.release() while 1: current = clock[hand] @@ -59,7 +69,7 @@ class LRUCache(object): hand = hand + 1 if hand > maxpos: hand = 0 - elif ref is False or hand == end: + else: lock.acquire() try: oldkey = current['key'] |