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trylock.go
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/
trylock.go
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package utils
import (
"time"
"github.com/fufuok/utils/pools/timerpool"
)
type TryMutex struct {
lock chan struct{}
}
func NewTryMutex() *TryMutex {
return &TryMutex{
make(chan struct{}, 1),
}
}
func (m *TryMutex) Lock() {
m.lock <- struct{}{}
}
func (m *TryMutex) Unlock() {
<-m.lock
}
// TryLock 实现可选等待时间尝试获取锁
func (m *TryMutex) TryLock(timeout ...time.Duration) bool {
select {
case m.lock <- struct{}{}:
return true
default:
if len(timeout) == 0 || timeout[0] <= 0 {
return false
}
timer := timerpool.New(timeout[0])
defer timerpool.Release(timer)
select {
case m.lock <- struct{}{}:
return true
case <-timer.C:
return false
}
}
}