| 7 |
|
package java.util.concurrent; |
| 8 |
|
|
| 9 |
|
import java.security.SecureRandom; |
| 10 |
< |
import java.net.InetAddress; |
| 10 |
> |
import java.net.NetworkInterface; |
| 11 |
|
import java.io.ObjectStreamField; |
| 12 |
+ |
import java.util.Enumeration; |
| 13 |
|
import java.util.Random; |
| 14 |
|
import java.util.Spliterator; |
| 15 |
|
import java.util.concurrent.atomic.AtomicInteger; |
| 119 |
|
s = (s << 8) | ((long)(seedBytes[i]) & 0xffL); |
| 120 |
|
return s; |
| 121 |
|
} |
| 122 |
< |
int hh = 0; // hashed host address |
| 122 |
> |
long h = 0L; |
| 123 |
|
try { |
| 124 |
< |
hh = InetAddress.getLocalHost().hashCode(); |
| 124 |
> |
Enumeration<NetworkInterface> ifcs = |
| 125 |
> |
NetworkInterface.getNetworkInterfaces(); |
| 126 |
> |
boolean retry = false; // retry once if getHardwareAddress is null |
| 127 |
> |
while (ifcs.hasMoreElements()) { |
| 128 |
> |
NetworkInterface ifc = ifcs.nextElement(); |
| 129 |
> |
if (!ifc.isVirtual()) { // skip fake addresses |
| 130 |
> |
byte[] bs = ifc.getHardwareAddress(); |
| 131 |
> |
if (bs != null) { |
| 132 |
> |
int n = bs.length; |
| 133 |
> |
int m = Math.min(n >>> 1, 4); |
| 134 |
> |
for (int i = 0; i < m; ++i) |
| 135 |
> |
h = (h << 16) ^ (bs[i] << 8) ^ bs[n-1-i]; |
| 136 |
> |
if (m < 4) |
| 137 |
> |
h = (h << 8) ^ bs[n-1-m]; |
| 138 |
> |
h = mix64(h); |
| 139 |
> |
break; |
| 140 |
> |
} |
| 141 |
> |
else if (!retry) |
| 142 |
> |
retry = true; |
| 143 |
> |
else |
| 144 |
> |
break; |
| 145 |
> |
} |
| 146 |
> |
} |
| 147 |
|
} catch (Exception ignore) { |
| 148 |
|
} |
| 149 |
< |
return (mix64((((long)hh) << 32) ^ System.currentTimeMillis()) ^ |
| 149 |
> |
return (h ^ mix64(System.currentTimeMillis()) ^ |
| 150 |
|
mix64(System.nanoTime())); |
| 151 |
|
} |
| 152 |
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|
