1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
|
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())})
|
