go-zero/core/syncx/spinlock.go
2020-07-26 17:09:05 +08:00

25 lines
326 B
Go

package syncx
import (
"runtime"
"sync/atomic"
)
type SpinLock struct {
lock uint32
}
func (sl *SpinLock) Lock() {
for !sl.TryLock() {
runtime.Gosched()
}
}
func (sl *SpinLock) TryLock() bool {
return atomic.CompareAndSwapUint32(&sl.lock, 0, 1)
}
func (sl *SpinLock) Unlock() {
atomic.StoreUint32(&sl.lock, 0)
}