Author: nextgens
Date: 2007-06-30 23:23:29 +0000 (Sat, 30 Jun 2007)
New Revision: 13852
Modified:
trunk/freenet/src/org/spaceroots/mantissa/random/MersenneTwister.java
Log:
Synchronize MersenneTwister ... it's a good idea to do it before we run into
problems
Modified: trunk/freenet/src/org/spaceroots/mantissa/random/MersenneTwister.java
===================================================================
--- trunk/freenet/src/org/spaceroots/mantissa/random/MersenneTwister.java
2007-06-30 23:18:55 UTC (rev 13851)
+++ trunk/freenet/src/org/spaceroots/mantissa/random/MersenneTwister.java
2007-06-30 23:23:29 UTC (rev 13852)
@@ -75,7 +75,7 @@
private static final int M = 397;
private static final int[] MAG01 = { 0x0, 0x9908b0df };
- private int[] mt;
+ private final int[] mt;
private int mti;
/** Creates a new random number generator.
@@ -123,7 +123,7 @@
* generator built with the same seed.</p>
* @param seed the initial seed (32 bits integer)
*/
- public void setSeed(int seed) {
+ public synchronized void setSeed(int seed) {
// we use a long masked by 0xffffffffL as a poor man unsigned
int
long longMT = seed;
mt[0]= (int) longMT;
@@ -138,7 +138,7 @@
/**
* Seed from byte[].
*/
- public void setSeed(byte[] seed) {
+ public synchronized void setSeed(byte[] seed) {
int[] seeds = new int[seed.length/4];
for(int i=0;i<seeds.length;i+=4) {
seeds[i] = Fields.bytesToInt(seed, i);
@@ -152,7 +152,7 @@
* @param seed the initial seed (32 bits integers array), if null
* the seed of the generator will be related to the current time
*/
- public void setSeed(int[] seed) {
+ public synchronized void setSeed(int[] seed) {
if (seed == null) {
setSeed(System.currentTimeMillis());
return;
@@ -198,7 +198,7 @@
* generator built with the same seed.</p>
* @param seed the initial seed (64 bits integer)
*/
- public void setSeed(long seed) {
+ public synchronized void setSeed(long seed) {
if (mt == null) {
// this is probably a spurious call from base class
constructor,
// we do nothing and wait for the setSeed in our own
@@ -218,7 +218,7 @@
* #nextLong nextLong}.</p>
* @param bits number of random bits to produce
*/
- protected int next(int bits) {
+ protected synchronized int next(int bits) {
int y;
if (mti >= N) { // generate N words at one time
