mirror of https://github.com/perkeep/perkeep.git
49 lines
1.0 KiB
Go
49 lines
1.0 KiB
Go
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/*
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Copyright 2011 Google Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package lru
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import (
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"container/list"
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"sync"
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)
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type Cache struct {
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maxEntries int
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lk sync.Mutex
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ll *list.List
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cache map[string]*list.Element
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}
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func New(maxEntries int) *Cache {
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return &Cache{
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maxEntries: maxEntries,
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cache: make(map[string]*list.Element),
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}
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}
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func (c *Cache) Add(key string, value interface{}) {
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c.lk.Lock()
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defer c.lk.Unlock()
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if ee, ok := c.cache[key]; ok {
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c.ll.MoveToFront(ee)
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ee.Value = value
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return
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}
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// TODO: check size, add new element, etc
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}
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