| 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())}) |
