225 |
|
private static final AtomicLong defaultGen = new AtomicLong(initialSeed()); |
226 |
|
|
227 |
|
private static long initialSeed() { |
228 |
< |
String pp = java.security.AccessController.doPrivileged( |
229 |
< |
new sun.security.action.GetPropertyAction( |
230 |
< |
"java.util.secureRandomSeed")); |
231 |
< |
if (pp != null && pp.equalsIgnoreCase("true")) { |
228 |
> |
if (java.security.AccessController.doPrivileged( |
229 |
> |
new java.security.PrivilegedAction<Boolean>() { |
230 |
> |
public Boolean run() { |
231 |
> |
return Boolean.getBoolean("java.util.secureRandomSeed"); |
232 |
> |
}})) { |
233 |
|
byte[] seedBytes = java.security.SecureRandom.getSeed(8); |
234 |
< |
long s = (long)(seedBytes[0]) & 0xffL; |
234 |
> |
long s = (long)seedBytes[0] & 0xffL; |
235 |
|
for (int i = 1; i < 8; ++i) |
236 |
< |
s = (s << 8) | ((long)(seedBytes[i]) & 0xffL); |
236 |
> |
s = (s << 8) | ((long)seedBytes[i] & 0xffL); |
237 |
|
return s; |
238 |
|
} |
239 |
|
return (mix64(System.currentTimeMillis()) ^ |
241 |
|
} |
242 |
|
|
243 |
|
// IllegalArgumentException messages |
244 |
< |
static final String BadBound = "bound must be positive"; |
245 |
< |
static final String BadRange = "bound must be greater than origin"; |
246 |
< |
static final String BadSize = "size must be non-negative"; |
244 |
> |
static final String BAD_BOUND = "bound must be positive"; |
245 |
> |
static final String BAD_RANGE = "bound must be greater than origin"; |
246 |
> |
static final String BAD_SIZE = "size must be non-negative"; |
247 |
|
|
248 |
|
/* |
249 |
|
* Internal versions of nextX methods used by streams, as well as |
417 |
|
*/ |
418 |
|
public int nextInt(int bound) { |
419 |
|
if (bound <= 0) |
420 |
< |
throw new IllegalArgumentException(BadBound); |
420 |
> |
throw new IllegalArgumentException(BAD_BOUND); |
421 |
|
// Specialize internalNextInt for origin 0 |
422 |
|
int r = mix32(nextSeed()); |
423 |
|
int m = bound - 1; |
445 |
|
*/ |
446 |
|
public int nextInt(int origin, int bound) { |
447 |
|
if (origin >= bound) |
448 |
< |
throw new IllegalArgumentException(BadRange); |
448 |
> |
throw new IllegalArgumentException(BAD_RANGE); |
449 |
|
return internalNextInt(origin, bound); |
450 |
|
} |
451 |
|
|
469 |
|
*/ |
470 |
|
public long nextLong(long bound) { |
471 |
|
if (bound <= 0) |
472 |
< |
throw new IllegalArgumentException(BadBound); |
472 |
> |
throw new IllegalArgumentException(BAD_BOUND); |
473 |
|
// Specialize internalNextLong for origin 0 |
474 |
|
long r = mix64(nextSeed()); |
475 |
|
long m = bound - 1; |
497 |
|
*/ |
498 |
|
public long nextLong(long origin, long bound) { |
499 |
|
if (origin >= bound) |
500 |
< |
throw new IllegalArgumentException(BadRange); |
500 |
> |
throw new IllegalArgumentException(BAD_RANGE); |
501 |
|
return internalNextLong(origin, bound); |
502 |
|
} |
503 |
|
|
523 |
|
*/ |
524 |
|
public double nextDouble(double bound) { |
525 |
|
if (!(bound > 0.0)) |
526 |
< |
throw new IllegalArgumentException(BadBound); |
526 |
> |
throw new IllegalArgumentException(BAD_BOUND); |
527 |
|
double result = (mix64(nextSeed()) >>> 11) * DOUBLE_UNIT * bound; |
528 |
|
return (result < bound) ? result : // correct for rounding |
529 |
|
Double.longBitsToDouble(Double.doubleToLongBits(bound) - 1); |
542 |
|
*/ |
543 |
|
public double nextDouble(double origin, double bound) { |
544 |
|
if (!(origin < bound)) |
545 |
< |
throw new IllegalArgumentException(BadRange); |
545 |
> |
throw new IllegalArgumentException(BAD_RANGE); |
546 |
|
return internalNextDouble(origin, bound); |
547 |
|
} |
548 |
|
|
570 |
|
*/ |
571 |
|
public IntStream ints(long streamSize) { |
572 |
|
if (streamSize < 0L) |
573 |
< |
throw new IllegalArgumentException(BadSize); |
573 |
> |
throw new IllegalArgumentException(BAD_SIZE); |
574 |
|
return StreamSupport.intStream |
575 |
|
(new RandomIntsSpliterator |
576 |
|
(this, 0L, streamSize, Integer.MAX_VALUE, 0), |
611 |
|
public IntStream ints(long streamSize, int randomNumberOrigin, |
612 |
|
int randomNumberBound) { |
613 |
|
if (streamSize < 0L) |
614 |
< |
throw new IllegalArgumentException(BadSize); |
614 |
> |
throw new IllegalArgumentException(BAD_SIZE); |
615 |
|
if (randomNumberOrigin >= randomNumberBound) |
616 |
< |
throw new IllegalArgumentException(BadRange); |
616 |
> |
throw new IllegalArgumentException(BAD_RANGE); |
617 |
|
return StreamSupport.intStream |
618 |
|
(new RandomIntsSpliterator |
619 |
|
(this, 0L, streamSize, randomNumberOrigin, randomNumberBound), |
637 |
|
*/ |
638 |
|
public IntStream ints(int randomNumberOrigin, int randomNumberBound) { |
639 |
|
if (randomNumberOrigin >= randomNumberBound) |
640 |
< |
throw new IllegalArgumentException(BadRange); |
640 |
> |
throw new IllegalArgumentException(BAD_RANGE); |
641 |
|
return StreamSupport.intStream |
642 |
|
(new RandomIntsSpliterator |
643 |
|
(this, 0L, Long.MAX_VALUE, randomNumberOrigin, randomNumberBound), |
656 |
|
*/ |
657 |
|
public LongStream longs(long streamSize) { |
658 |
|
if (streamSize < 0L) |
659 |
< |
throw new IllegalArgumentException(BadSize); |
659 |
> |
throw new IllegalArgumentException(BAD_SIZE); |
660 |
|
return StreamSupport.longStream |
661 |
|
(new RandomLongsSpliterator |
662 |
|
(this, 0L, streamSize, Long.MAX_VALUE, 0L), |
697 |
|
public LongStream longs(long streamSize, long randomNumberOrigin, |
698 |
|
long randomNumberBound) { |
699 |
|
if (streamSize < 0L) |
700 |
< |
throw new IllegalArgumentException(BadSize); |
700 |
> |
throw new IllegalArgumentException(BAD_SIZE); |
701 |
|
if (randomNumberOrigin >= randomNumberBound) |
702 |
< |
throw new IllegalArgumentException(BadRange); |
702 |
> |
throw new IllegalArgumentException(BAD_RANGE); |
703 |
|
return StreamSupport.longStream |
704 |
|
(new RandomLongsSpliterator |
705 |
|
(this, 0L, streamSize, randomNumberOrigin, randomNumberBound), |
723 |
|
*/ |
724 |
|
public LongStream longs(long randomNumberOrigin, long randomNumberBound) { |
725 |
|
if (randomNumberOrigin >= randomNumberBound) |
726 |
< |
throw new IllegalArgumentException(BadRange); |
726 |
> |
throw new IllegalArgumentException(BAD_RANGE); |
727 |
|
return StreamSupport.longStream |
728 |
|
(new RandomLongsSpliterator |
729 |
|
(this, 0L, Long.MAX_VALUE, randomNumberOrigin, randomNumberBound), |
742 |
|
*/ |
743 |
|
public DoubleStream doubles(long streamSize) { |
744 |
|
if (streamSize < 0L) |
745 |
< |
throw new IllegalArgumentException(BadSize); |
745 |
> |
throw new IllegalArgumentException(BAD_SIZE); |
746 |
|
return StreamSupport.doubleStream |
747 |
|
(new RandomDoublesSpliterator |
748 |
|
(this, 0L, streamSize, Double.MAX_VALUE, 0.0), |
785 |
|
public DoubleStream doubles(long streamSize, double randomNumberOrigin, |
786 |
|
double randomNumberBound) { |
787 |
|
if (streamSize < 0L) |
788 |
< |
throw new IllegalArgumentException(BadSize); |
788 |
> |
throw new IllegalArgumentException(BAD_SIZE); |
789 |
|
if (!(randomNumberOrigin < randomNumberBound)) |
790 |
< |
throw new IllegalArgumentException(BadRange); |
790 |
> |
throw new IllegalArgumentException(BAD_RANGE); |
791 |
|
return StreamSupport.doubleStream |
792 |
|
(new RandomDoublesSpliterator |
793 |
|
(this, 0L, streamSize, randomNumberOrigin, randomNumberBound), |
811 |
|
*/ |
812 |
|
public DoubleStream doubles(double randomNumberOrigin, double randomNumberBound) { |
813 |
|
if (!(randomNumberOrigin < randomNumberBound)) |
814 |
< |
throw new IllegalArgumentException(BadRange); |
814 |
> |
throw new IllegalArgumentException(BAD_RANGE); |
815 |
|
return StreamSupport.doubleStream |
816 |
|
(new RandomDoublesSpliterator |
817 |
|
(this, 0L, Long.MAX_VALUE, randomNumberOrigin, randomNumberBound), |
826 |
|
* approach. The long and double versions of this class are |
827 |
|
* identical except for types. |
828 |
|
*/ |
829 |
< |
static final class RandomIntsSpliterator implements Spliterator.OfInt { |
829 |
> |
private static final class RandomIntsSpliterator |
830 |
> |
implements Spliterator.OfInt { |
831 |
|
final SplittableRandom rng; |
832 |
|
long index; |
833 |
|
final long fence; |
882 |
|
/** |
883 |
|
* Spliterator for long streams. |
884 |
|
*/ |
885 |
< |
static final class RandomLongsSpliterator implements Spliterator.OfLong { |
885 |
> |
private static final class RandomLongsSpliterator |
886 |
> |
implements Spliterator.OfLong { |
887 |
|
final SplittableRandom rng; |
888 |
|
long index; |
889 |
|
final long fence; |
939 |
|
/** |
940 |
|
* Spliterator for double streams. |
941 |
|
*/ |
942 |
< |
static final class RandomDoublesSpliterator implements Spliterator.OfDouble { |
942 |
> |
private static final class RandomDoublesSpliterator |
943 |
> |
implements Spliterator.OfDouble { |
944 |
|
final SplittableRandom rng; |
945 |
|
long index; |
946 |
|
final long fence; |