30 lines
538 B
Go
30 lines
538 B
Go
package sdkrand
|
|
|
|
import (
|
|
"math/rand"
|
|
"sync"
|
|
"time"
|
|
)
|
|
|
|
// lockedSource is a thread-safe implementation of rand.Source
|
|
type lockedSource struct {
|
|
lk sync.Mutex
|
|
src rand.Source
|
|
}
|
|
|
|
func (r *lockedSource) Int63() (n int64) {
|
|
r.lk.Lock()
|
|
n = r.src.Int63()
|
|
r.lk.Unlock()
|
|
return
|
|
}
|
|
|
|
func (r *lockedSource) Seed(seed int64) {
|
|
r.lk.Lock()
|
|
r.src.Seed(seed)
|
|
r.lk.Unlock()
|
|
}
|
|
|
|
// SeededRand is a new RNG using a thread safe implementation of rand.Source
|
|
var SeededRand = rand.New(&lockedSource{src: rand.NewSource(time.Now().UnixNano())})
|