README
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针对某个key的读写锁
我们常常面对这样的情况，多个go routine可能要访问同一个资源，但这个资源并不一定常驻内存， 换句话说没有固定的资源锁来控制这多个go routine的同步。
KeyLocker
如果将这些资源以某种唯一key的形式组织，那就可以利用一个map来保存这些资源锁了，在使用的时候会从map中获取， 如果没有就在map中新建。使用完了后再检查是否有别的go routine也将使用这个资源锁，如果没有，就可以将资源锁从 map中删除。
KeyLocker组
生成一组KeyLocker，一般此数组长度为素数，通过将key做hash后取模的方式将key映射到不同的KeyLocker上，可以提供更大的并发效率。
在测试中，KeyLocker组的效率比单个KeyLocker要高，单个KeyLocker平均操作时长在400ns左右，简单分组的KeyLocker平均操作时长在80ns左右，
按xxhash后的分组平均时长在120ns左右。
用法
//新建单个KeyLocker
var locker = NewKeyLocker()
//新建简单分组的KeyLocker组
var locker = NewKeyLockeGrp()
//新建xxhash分组的KeyLocker组
var locker = NewXHashKeyLockeGrp()
//读锁
locker.RLock(resource_id)
defer locker.RUnlock(resource_id)
//写锁
locker.Lock(resource_id)
defer locker.Unlock(resource_id)
Documentation
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Index ¶
Constants ¶
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Variables ¶
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Functions ¶
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Types ¶
type KeyLocker ¶
type KeyLocker struct {
// contains filtered or unexported fields
}
KeyLocker global locker based on key
func NewKeyLockerInstance ¶ added in v0.8.9
func NewKeyLockerInstance() *KeyLocker
NewKeyLockerInstance new key locker instance
type KeyLockerGrp ¶ added in v0.8.9
type KeyLockerGrp struct {
// contains filtered or unexported fields
}
func (*KeyLockerGrp) Lock ¶ added in v0.8.9
func (w *KeyLockerGrp) Lock(key interface{})
Lock write lock
func (*KeyLockerGrp) RLock ¶ added in v0.8.9
func (w *KeyLockerGrp) RLock(key interface{})
RLock read lock
func (*KeyLockerGrp) RUnlock ¶ added in v1.2.1
func (w *KeyLockerGrp) RUnlock(key interface{})
RUnlock read unlock
func (*KeyLockerGrp) Unlock ¶ added in v0.8.9
func (w *KeyLockerGrp) Unlock(key interface{})
Unlock write unlock
type Locker ¶ added in v0.8.9
type Locker interface {
//Lock write lock
Lock(key interface{})
//Unlock write unlock
Unlock(key interface{})
//RLock read lock
RLock(key interface{})
//RUnlock read unlock
RUnlock(key interface{})
}
func NewKeyLockeGrp ¶ added in v0.8.9
NewKeyLockeGrp new wide key locker group
func NewXHashKeyLockeGrp ¶ added in v0.8.9
NewXHashKeyLockeGrp new wide key locker group
Source Files
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