59 lines
1.0 KiB
Go
59 lines
1.0 KiB
Go
package syncUtil
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import (
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"sync"
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)
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// 读写锁工具类
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type RWLockerUtil struct {
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// 锁集合
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lockerMap map[string]*RWLocker
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// 锁对象
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rwMutex sync.RWMutex
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}
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// 创建新的锁工具类
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func NewRWLockerUtil() *RWLockerUtil {
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return &RWLockerUtil{
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lockerMap: make(map[string]*RWLocker, 8),
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}
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}
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// 获取锁对象
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// lockName:锁名
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// 返回值：
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// RWLocker:读写锁对象
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func (this *RWLockerUtil) GetLock(lockName string) *RWLocker {
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var rwLockerObj *RWLocker
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var exists bool
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func() {
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this.rwMutex.RLock()
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defer this.rwMutex.RUnlock()
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rwLockerObj, exists = this.lockerMap[lockName]
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}()
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if exists {
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return rwLockerObj
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}
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this.rwMutex.Lock()
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defer this.rwMutex.Unlock()
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rwLockerObj, exists = this.lockerMap[lockName]
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if exists == false {
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rwLockerObj = NewRWLocker()
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this.lockerMap[lockName] = rwLockerObj
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}
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return rwLockerObj
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}
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// 释放读写锁对象
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// lockName:锁名
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func (this *RWLockerUtil) ReleaseLock(lockName string) {
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this.rwMutex.Lock()
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defer this.rwMutex.Unlock()
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delete(this.lockerMap, lockName)
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}
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