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root/jsr166/jsr166/src/jsr166y/ThreadLocalRandom.java

Comparing jsr166/src/jsr166y/ThreadLocalRandom.java (file contents):
Revision 1.13 by jsr166, Wed Aug 19 17:52:50 2009 UTC vs.
Revision 1.17 by jsr166, Fri Jul 19 19:34:43 2013 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		*/
6
7		package jsr166y;
#	Line 34 | Line 34 | import java.util.Random;
34		*/
35		public class ThreadLocalRandom extends Random {
36		// same constants as Random, but must be redeclared because private
37	<	private final static long multiplier = 0x5DEECE66DL;
38	<	private final static long addend = 0xBL;
39	<	private final static long mask = (1L << 48) - 1;
37	>	private static final long multiplier = 0x5DEECE66DL;
38	>	private static final long addend = 0xBL;
39	>	private static final long mask = (1L << 48) - 1;
40
41		/**
42		* The random seed. We can't use super.seed.
#	Line 44 | Line 44 | public class ThreadLocalRandom extends R
44		private long rnd;
45
46		/**
47	<	* Initialization flag to permit the first and only allowed call
48	<	* to setSeed (inside Random constructor) to succeed.  We can't
49	<	* allow others since it would cause setting seed in one part of a
50	<	* program to unintentionally impact other usages by the thread.
47	>	* Initialization flag to permit calls to setSeed to succeed only
48	>	* while executing the Random constructor.  We can't allow others
49	>	* since it would cause setting seed in one part of a program to
50	>	* unintentionally impact other usages by the thread.
51		*/
52		boolean initialized;
53
#	Line 69 | Line 69 | public class ThreadLocalRandom extends R
69
70		/**
71		* Constructor called only by localRandom.initialValue.
72	–	* We rely on the fact that the superclass no-arg constructor
73	–	* invokes setSeed exactly once to initialize.
72		*/
73		ThreadLocalRandom() {
74		super();
75	+	initialized = true;
76		}
77
78		/**
#	Line 94 | Line 93 | public class ThreadLocalRandom extends R
93		public void setSeed(long seed) {
94		if (initialized)
95		throw new UnsupportedOperationException();
97	–	initialized = true;
96		rnd = (seed ^ multiplier) & mask;
97		}
98
#	Line 109 | Line 107 | public class ThreadLocalRandom extends R
107		*
108		* @param least the least value returned
109		* @param bound the upper bound (exclusive)
110	+	* @return the next value
111		* @throws IllegalArgumentException if least greater than or equal
112		* to bound
114	–	* @return the next value
113		*/
114		public int nextInt(int least, int bound) {
115		if (least >= bound)

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