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Speed up event filtering (for ACL) logic

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This commit is contained in:
Erik Johnston 2015-08-04 09:32:23 +01:00
parent 2c963054f8
commit 4d6cb8814e
5 changed files with 105 additions and 46 deletions
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10
synapse/storage/_base.py
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@ -71,6 +71,11 @@ class Cache(object):
self.thread = None
caches_by_name[name] = self.cache
class Sentinel(object):
__slots__ = []
self.sentinel = Sentinel()
def check_thread(self):
expected_thread = self.thread
if expected_thread is None:
@ -85,9 +90,10 @@ class Cache(object):
if len(keyargs) != self.keylen:
raise ValueError("Expected a key to have %d items", self.keylen)
if keyargs in self.cache:
val = self.cache.get(keyargs, self.sentinel)
if val is not self.sentinel:
cache_counter.inc_hits(self.name)
return self.cache[keyargs]
return val
cache_counter.inc_misses(self.name)
raise KeyError()