mirror of
https://github.com/astaxie/beego.git
synced 2024-11-21 21:50:55 +00:00
92 lines
2.0 KiB
Go
92 lines
2.0 KiB
Go
// Copyright 2014 beego Author. All Rights Reserved.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package utils
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import (
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"sync"
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)
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// BeeMap is a map with lock
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type BeeMap struct {
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lock *sync.RWMutex
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bm map[interface{}]interface{}
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}
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// NewBeeMap return new safemap
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func NewBeeMap() *BeeMap {
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return &BeeMap{
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lock: new(sync.RWMutex),
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bm: make(map[interface{}]interface{}),
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}
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}
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// Get from maps return the k's value
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func (m *BeeMap) Get(k interface{}) interface{} {
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m.lock.RLock()
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defer m.lock.RUnlock()
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if val, ok := m.bm[k]; ok {
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return val
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}
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return nil
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}
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// Set Maps the given key and value. Returns false
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// if the key is already in the map and changes nothing.
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func (m *BeeMap) Set(k interface{}, v interface{}) bool {
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m.lock.Lock()
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defer m.lock.Unlock()
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if val, ok := m.bm[k]; !ok {
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m.bm[k] = v
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} else if val != v {
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m.bm[k] = v
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} else {
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return false
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}
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return true
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}
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// Check Returns true if k is exist in the map.
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func (m *BeeMap) Check(k interface{}) bool {
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m.lock.RLock()
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defer m.lock.RUnlock()
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_, ok := m.bm[k]
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return ok
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}
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// Delete the given key and value.
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func (m *BeeMap) Delete(k interface{}) {
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m.lock.Lock()
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defer m.lock.Unlock()
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delete(m.bm, k)
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}
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// Items returns all items in safemap.
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func (m *BeeMap) Items() map[interface{}]interface{} {
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m.lock.RLock()
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defer m.lock.RUnlock()
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r := make(map[interface{}]interface{})
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for k, v := range m.bm {
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r[k] = v
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}
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return r
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}
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// Count returns the number of items within the map.
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func (m *BeeMap) Count() int {
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m.lock.RLock()
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defer m.lock.RUnlock()
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return len(m.bm)
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}
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