| 219 |
|
return seed += gamma; |
| 220 |
|
} |
| 221 |
|
|
| 222 |
+ |
// IllegalArgumentException messages |
| 223 |
+ |
static final String BAD_BOUND = "bound must be positive"; |
| 224 |
+ |
static final String BAD_RANGE = "bound must be greater than origin"; |
| 225 |
+ |
static final String BAD_SIZE = "size must be non-negative"; |
| 226 |
+ |
|
| 227 |
|
/** |
| 228 |
|
* The seed generator for default constructors. |
| 229 |
|
*/ |
| 230 |
< |
private static final AtomicLong defaultGen = new AtomicLong(initialSeed()); |
| 231 |
< |
|
| 232 |
< |
private static long initialSeed() { |
| 233 |
< |
String pp = java.security.AccessController.doPrivileged( |
| 234 |
< |
new sun.security.action.GetPropertyAction( |
| 235 |
< |
"java.util.secureRandomSeed")); |
| 236 |
< |
if (pp != null && pp.equalsIgnoreCase("true")) { |
| 230 |
> |
private static final AtomicLong defaultGen |
| 231 |
> |
= new AtomicLong(mix64(System.currentTimeMillis()) ^ |
| 232 |
> |
mix64(System.nanoTime())); |
| 233 |
> |
|
| 234 |
> |
// at end of <clinit> to survive static initialization circularity |
| 235 |
> |
static { |
| 236 |
> |
if (java.security.AccessController.doPrivileged( |
| 237 |
> |
new java.security.PrivilegedAction<Boolean>() { |
| 238 |
> |
public Boolean run() { |
| 239 |
> |
return Boolean.getBoolean("java.util.secureRandomSeed"); |
| 240 |
> |
}})) { |
| 241 |
|
byte[] seedBytes = java.security.SecureRandom.getSeed(8); |
| 242 |
< |
long s = (long)(seedBytes[0]) & 0xffL; |
| 242 |
> |
long s = (long)seedBytes[0] & 0xffL; |
| 243 |
|
for (int i = 1; i < 8; ++i) |
| 244 |
< |
s = (s << 8) | ((long)(seedBytes[i]) & 0xffL); |
| 245 |
< |
return s; |
| 244 |
> |
s = (s << 8) | ((long)seedBytes[i] & 0xffL); |
| 245 |
> |
defaultGen.set(s); |
| 246 |
|
} |
| 238 |
– |
return (mix64(System.currentTimeMillis()) ^ |
| 239 |
– |
mix64(System.nanoTime())); |
| 247 |
|
} |
| 248 |
|
|
| 242 |
– |
// IllegalArgumentException messages |
| 243 |
– |
static final String BAD_BOUND = "bound must be positive"; |
| 244 |
– |
static final String BAD_RANGE = "bound must be greater than origin"; |
| 245 |
– |
static final String BAD_SIZE = "size must be non-negative"; |
| 246 |
– |
|
| 249 |
|
/* |
| 250 |
|
* Internal versions of nextX methods used by streams, as well as |
| 251 |
|
* the public nextX(origin, bound) methods. These exist mainly to |
| 375 |
|
* may, and typically does, vary across program invocations. |
| 376 |
|
*/ |
| 377 |
|
public SplittableRandom() { // emulate defaultGen.split() |
| 378 |
< |
long s = defaultGen.getAndAdd(2 * GOLDEN_GAMMA); |
| 378 |
> |
long s = defaultGen.getAndAdd(GOLDEN_GAMMA << 1); |
| 379 |
|
this.seed = mix64(s); |
| 380 |
|
this.gamma = mixGamma(s + GOLDEN_GAMMA); |
| 381 |
|
} |
| 779 |
|
* @return a stream of pseudorandom {@code double} values, |
| 780 |
|
* each with the given origin (inclusive) and bound (exclusive) |
| 781 |
|
* @throws IllegalArgumentException if {@code streamSize} is |
| 782 |
< |
* less than zero |
| 781 |
< |
* @throws IllegalArgumentException if {@code randomNumberOrigin} |
| 782 |
> |
* less than zero, or {@code randomNumberOrigin} |
| 783 |
|
* is greater than or equal to {@code randomNumberBound} |
| 784 |
|
*/ |
| 785 |
|
public DoubleStream doubles(long streamSize, double randomNumberOrigin, |
