mirror of
https://github.com/octoleo/syncthing.git
synced 2024-11-09 14:50:56 +00:00
26 lines
357 B
Go
26 lines
357 B
Go
// Package lamport implements a simple Lamport Clock for versioning
|
|
package lamport
|
|
|
|
import "sync"
|
|
|
|
var Default = Clock{}
|
|
|
|
type Clock struct {
|
|
val uint64
|
|
mut sync.Mutex
|
|
}
|
|
|
|
func (c *Clock) Tick(v uint64) uint64 {
|
|
c.mut.Lock()
|
|
if v > c.val {
|
|
c.val = v + 1
|
|
c.mut.Unlock()
|
|
return v + 1
|
|
} else {
|
|
c.val++
|
|
v = c.val
|
|
c.mut.Unlock()
|
|
return v
|
|
}
|
|
}
|