| 7 |
|
package java.util.concurrent; |
| 8 |
|
|
| 9 |
|
import java.io.ObjectStreamField; |
| 10 |
– |
import java.net.NetworkInterface; |
| 11 |
– |
import java.util.Enumeration; |
| 10 |
|
import java.util.Random; |
| 11 |
|
import java.util.Spliterator; |
| 12 |
|
import java.util.concurrent.atomic.AtomicInteger; |
| 116 |
|
s = (s << 8) | ((long)(seedBytes[i]) & 0xffL); |
| 117 |
|
return s; |
| 118 |
|
} |
| 119 |
< |
long h = 0L; |
| 122 |
< |
try { |
| 123 |
< |
Enumeration<NetworkInterface> ifcs = |
| 124 |
< |
NetworkInterface.getNetworkInterfaces(); |
| 125 |
< |
boolean retry = false; // retry once if getHardwareAddress is null |
| 126 |
< |
while (ifcs.hasMoreElements()) { |
| 127 |
< |
NetworkInterface ifc = ifcs.nextElement(); |
| 128 |
< |
if (!ifc.isVirtual()) { // skip fake addresses |
| 129 |
< |
byte[] bs = ifc.getHardwareAddress(); |
| 130 |
< |
if (bs != null) { |
| 131 |
< |
int n = bs.length; |
| 132 |
< |
int m = Math.min(n >>> 1, 4); |
| 133 |
< |
for (int i = 0; i < m; ++i) |
| 134 |
< |
h = (h << 16) ^ (bs[i] << 8) ^ bs[n-1-i]; |
| 135 |
< |
if (m < 4) |
| 136 |
< |
h = (h << 8) ^ bs[n-1-m]; |
| 137 |
< |
h = mix64(h); |
| 138 |
< |
break; |
| 139 |
< |
} |
| 140 |
< |
else if (!retry) |
| 141 |
< |
retry = true; |
| 142 |
< |
else |
| 143 |
< |
break; |
| 144 |
< |
} |
| 145 |
< |
} |
| 146 |
< |
} catch (Exception ignore) { |
| 147 |
< |
} |
| 148 |
< |
return (h ^ mix64(System.currentTimeMillis()) ^ |
| 119 |
> |
return (mix64(System.currentTimeMillis()) ^ |
| 120 |
|
mix64(System.nanoTime())); |
| 121 |
|
} |
| 122 |
|
|
