2015-08-11 16:59:32 +00:00
|
|
|
# -*- coding: utf-8 -*-
|
2016-01-07 04:26:29 +00:00
|
|
|
# Copyright 2015, 2016 OpenMarket Ltd
|
2015-08-11 16:59:32 +00:00
|
|
|
#
|
|
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
|
|
# you may not use this file except in compliance with the License.
|
|
|
|
# You may obtain a copy of the License at
|
|
|
|
#
|
|
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
#
|
|
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
|
|
# See the License for the specific language governing permissions and
|
|
|
|
# limitations under the License.
|
2015-08-12 09:13:35 +00:00
|
|
|
|
|
|
|
import synapse.metrics
|
2016-03-22 18:22:52 +00:00
|
|
|
from lrucache import LruCache
|
2015-08-12 09:13:35 +00:00
|
|
|
|
|
|
|
DEBUG_CACHES = False
|
|
|
|
|
|
|
|
metrics = synapse.metrics.get_metrics_for("synapse.util.caches")
|
|
|
|
|
|
|
|
caches_by_name = {}
|
|
|
|
cache_counter = metrics.register_cache(
|
|
|
|
"cache",
|
|
|
|
lambda: {(name,): len(caches_by_name[name]) for name in caches_by_name.keys()},
|
|
|
|
labels=["name"],
|
|
|
|
)
|
2016-03-22 18:22:52 +00:00
|
|
|
|
|
|
|
_string_cache = LruCache(5000)
|
|
|
|
caches_by_name["string_cache"] = _string_cache
|
|
|
|
|
|
|
|
|
|
|
|
def intern_string(string):
|
|
|
|
return _string_cache.setdefault(string, string)
|