forked from mirror/ledisdb
28 lines
389 B
Go
28 lines
389 B
Go
|
package ssdb
|
||
|
|
|
||
|
|
import (
|
||
|
|
"hash/crc32"
|
||
|
|
"sync"
|
||
|
|
)
|
||
|
|
|
||
|
|
type keyMutex struct {
|
||
|
|
mutexs []*sync.Mutex
|
||
|
|
}
|
||
|
|
|
||
|
|
func newKeyMutex(size int) *keyMutex {
|
||
|
|
m := new(keyMutex)
|
||
|
|
|
||
|
|
m.mutexs = make([]*sync.Mutex, size)
|
||
|
|
|
||
|
|
for i := range m.mutexs {
|
||
|
|
m.mutexs[i] = &sync.Mutex{}
|
||
|
|
}
|
||
|
|
|
||
|
|
return m
|
||
|
|
}
|
||
|
|
|
||
|
|
func (k *keyMutex) Get(key []byte) *sync.Mutex {
|
||
|
|
h := int(crc32.ChecksumIEEE(key))
|
||
|
|
return k.mutexs[h%len(k.mutexs)]
|
||
|
|
}
|