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add safemap and test

This commit is contained in:
astaxie 2013-03-28 15:25:49 +08:00
parent 1b715bcbea
commit f78ceb82d9
2 changed files with 82 additions and 0 deletions

58
safemap.go Normal file
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package beego
import (
"sync"
)
type BeeMap struct {
lock *sync.RWMutex
bm map[interface{}]interface{}
}
func NewBeeMap() *BeeMap {
return &BeeMap{
lock: new(sync.RWMutex),
bm: make(map[interface{}]interface{}),
}
}
//Get from maps return the k's value
func (m *BeeMap) Get(k interface{}) interface{} {
m.lock.RLock()
defer m.lock.RUnlock()
if val, ok := m.bm[k]; ok {
return val
}
return nil
}
// Maps the given key and value. Returns false
// if the key is already in the map and changes nothing.
func (m *BeeMap) Set(k interface{}, v interface{}) bool {
m.lock.Lock()
defer m.lock.Unlock()
if val, ok := m.bm[k]; !ok {
m.bm[k] = v
} else if val != v {
m.bm[k] = v
} else {
return false
}
return true
}
// Returns true if k is exist in the map.
func (m *BeeMap) Check(k interface{}) bool {
m.lock.RLock()
defer m.lock.RUnlock()
if _, ok := m.bm[k]; !ok {
return false
}
return true
}
func (m *BeeMap) Delete(k interface{}) {
m.lock.Lock()
defer m.lock.Unlock()
delete(m.bm, k)
}

24
safemap_test.go Normal file
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package beego
import (
"testing"
)
func Test_beemap(t *testing.T) {
bm := NewBeeMap()
if !bm.Set("astaxie", 1) {
t.Error("set Error")
}
if !bm.Check("astaxie") {
t.Error("check err")
}
if v := bm.Get("astaxie"); v.(int) != 1 {
t.Error("get err")
}
bm.Delete("astaxie")
if bm.Check("astaxie") {
t.Error("delete err")
}
}