Merge pull request #24 from jenetics/issues/PRNGINE-20-lgtm_warnings

jenetics · web-flow · commit 947750ee08b2 · 2019-07-22T21:03:59.000+02:00
#20: Fix LGTM warnings.
diff --git a/prngine/src/main/java/io/jenetics/prngine/KISS32Random.java b/prngine/src/main/java/io/jenetics/prngine/KISS32Random.java
@@ -340,7 +340,7 @@ public void setSeed(final byte[] seed) {
 	}
 
 	@Override
-	public void setSeed(final long seed) {
+	public synchronized void setSeed(final long seed) {
 		setSeed(PRNG.seedBytes(seed, SEED_BYTES));
 	}
 
diff --git a/prngine/src/main/java/io/jenetics/prngine/KISS64Random.java b/prngine/src/main/java/io/jenetics/prngine/KISS64Random.java
@@ -226,8 +226,8 @@ void setSeed(final byte[] seed) {
 		@Override
 		public int hashCode() {
 			int hash = 31;
-			hash += 37*_x + 17;
-			hash += 37*_y + 17;
+			hash += 37*Long.hashCode(_x) + 17;
+			hash += 37*Long.hashCode(_y) + 17;
 			hash += 37*_z1 + 17;
 			hash += 37*_c1 + 17;
 			hash += 37*_z2 + 17;
@@ -350,7 +350,7 @@ public void setSeed(final byte[] seed) {
 	}
 
 	@Override
-	public void setSeed(final long seed) {
+	public synchronized void setSeed(final long seed) {
 		setSeed(PRNG.seedBytes(seed, SEED_BYTES));
 	}
 
diff --git a/prngine/src/main/java/io/jenetics/prngine/LCG64ShiftRandom.java b/prngine/src/main/java/io/jenetics/prngine/LCG64ShiftRandom.java
@@ -521,7 +521,7 @@ public void setSeed(final byte[] seed) {
 	}
 
 	@Override
-	public void setSeed(final long seed) {
+	public synchronized void setSeed(final long seed) {
 		setSeed(PRNG.seedBytes(seed, SEED_BYTES));
 	}
 
diff --git a/prngine/src/main/java/io/jenetics/prngine/MT19937_32Random.java b/prngine/src/main/java/io/jenetics/prngine/MT19937_32Random.java
@@ -90,7 +90,7 @@ private TLRandom(final long seed) {
 		}
 
 		@Override
-		public void setSeed(final long seed) {
+		public synchronized void setSeed(final long seed) {
 			if (_sentry != null) {
 				throw new UnsupportedOperationException(
 					"The 'setSeed(long)' method is not supported " +
@@ -328,7 +328,7 @@ public void setSeed(final byte[] seed) {
 	}
 
 	@Override
-	public void setSeed(final long seed) {
+	public synchronized void setSeed(final long seed) {
 		if (_state != null) _state.setSeed(seed);
 	}
 
diff --git a/prngine/src/main/java/io/jenetics/prngine/MT19937_64Random.java b/prngine/src/main/java/io/jenetics/prngine/MT19937_64Random.java
@@ -91,7 +91,7 @@ private TLRandom(final long seed) {
 		}
 
 		@Override
-		public void setSeed(final long seed) {
+		public synchronized void setSeed(final long seed) {
 			if (_sentry != null) {
 				throw new UnsupportedOperationException(
 					"The 'setSeed(long)' method is not supported " +
@@ -331,7 +331,7 @@ public void setSeed(final byte[] seed) {
 	}
 
 	@Override
-	public void setSeed(final long seed) {
+	public synchronized void setSeed(final long seed) {
 		if (_state != null) _state.setSeed(seed);
 	}
 
diff --git a/prngine/src/main/java/io/jenetics/prngine/PRNG.java b/prngine/src/main/java/io/jenetics/prngine/PRNG.java
@@ -186,20 +186,15 @@ public static int nextInt(
 		}
 
 		final int value;
-
-		if (origin < bound) {
-			int n = bound - origin;
-			if (n > 0) {
-				value = random.nextInt(n) + origin;
-			} else {
-				int r;
-				do {
-					r = random.nextInt();
-				} while (r < origin || r >= bound);
-				value = r;
-			}
+		int n = bound - origin;
+		if (n > 0) {
+			value = random.nextInt(n) + origin;
 		} else {
-			value = random.nextInt();
+			int r;
+			do {
+				r = random.nextInt();
+			} while (r < origin || r >= bound);
+			value = r;
 		}
 
 		return value;
@@ -230,22 +225,20 @@ public static long nextLong(
 		}
 
 		long value = random.nextLong();
-		if (origin < bound) {
-			long n = bound - origin, m = n - 1;
-			if ((n & m) == 0L) {
-				value = (value & m) + origin;
-			} else if (n > 0L) {
-				for (long u = value >>> 1;
-					 u + m - (value = u % n) < 0L;
-					 u = random.nextLong() >>> 1)
-				{
-				}
-
-				value += origin;
-			} else {
-				while (value < origin || value >= bound) {
-					value = random.nextLong();
-				}
+		long n = bound - origin, m = n - 1;
+		if ((n & m) == 0L) {
+			value = (value & m) + origin;
+		} else if (n > 0L) {
+			for (long u = value >>> 1;
+				 u + m - (value = u % n) < 0L;
+				 u = random.nextLong() >>> 1)
+			{
+			}
+
+			value += origin;
+		} else {
+			while (value < origin || value >= bound) {
+				value = random.nextLong();
 			}
 		}
 
diff --git a/prngine/src/main/java/io/jenetics/prngine/Random32.java b/prngine/src/main/java/io/jenetics/prngine/Random32.java
@@ -124,7 +124,7 @@ public int nextInt() {
 			}
 
 			@Override
-			public void setSeed(final long seed) {
+			public synchronized void setSeed(final long seed) {
 				if (_sentry != null) {
 					throw new UnsupportedOperationException(
 						"The 'setSeed(long)' method is not supported."
diff --git a/prngine/src/main/java/io/jenetics/prngine/Random64.java b/prngine/src/main/java/io/jenetics/prngine/Random64.java
@@ -137,7 +137,7 @@ public long nextLong() {
 			}
 
 			@Override
-			public void setSeed(final long seed) {
+			public synchronized void setSeed(final long seed) {
 				if (_sentry != null) {
 					throw new UnsupportedOperationException(
 						"The 'setSeed(long)' method is not supported."
diff --git a/prngine/src/main/java/io/jenetics/prngine/XOR32ShiftRandom.java b/prngine/src/main/java/io/jenetics/prngine/XOR32ShiftRandom.java
@@ -89,7 +89,8 @@ public static enum Shift {
 			public int shift(int x, final Param param) {
 				x ^= x << param.a;
 				x ^= x >>> param.b;
-				return x^x << param.c;
+				x ^= x << param.c;
+				return x ;
 			}
 		},
 
@@ -108,7 +109,8 @@ public int shift(int x, final Param param) {
 			public int shift(int x, final Param param) {
 				x ^= x << param.c;
 				x ^= x >>> param.b;
-				return x^x << param.a;
+				x ^= x << param.a;
+				return x;
 			}
 		},
 
@@ -127,7 +129,8 @@ public int shift(int x, final Param param) {
 			public int shift(int x, final Param param) {
 				x ^= x >>> param.a;
 				x ^= x << param.b;
-				return x^x >>> param.c;
+				x ^= x >>> param.c;
+				return x;
 			}
 		},
 
@@ -146,7 +149,8 @@ public int shift(int x, final Param param) {
 			public int shift(int x, final Param param) {
 				x ^= x >>> param.c;
 				x ^= x << param.b;
-				return x^x >>> param.a;
+				x ^= x >>> param.a;
+				return x;
 			}
 		},
 
@@ -165,7 +169,8 @@ public int shift(int x, final Param param) {
 			public int shift(int x, final Param param) {
 				x ^= x << param.a;
 				x ^= x << param.c;
-				return x^x >>> param.b;
+				x ^= x >>> param.b;
+				return x;
 			}
 		},
 
@@ -184,7 +189,8 @@ public int shift(int x, final Param param) {
 			public int shift(int x, final Param param) {
 				x ^= x << param.c;
 				x ^= x << param.a;
-				return x^x >>> param.b;
+				x ^= x >>> param.b;
+				return x;
 			}
 		},
 
@@ -203,7 +209,8 @@ public int shift(int x, final Param param) {
 			public int shift(int x, final Param param) {
 				x ^= x >>> param.a;
 				x ^= x >>> param.c;
-				return x^x << param.b;
+				x ^= x << param.b;
+				return x;
 			}
 		},
 
@@ -222,7 +229,8 @@ public int shift(int x, final Param param) {
 			public int shift(int x, final Param param) {
 				x ^= x >>> param.c;
 				x ^= x >>> param.a;
-				return x^x << param.b;
+				x ^= x << param.b;
+				return x;
 			}
 		};
 
@@ -710,7 +718,7 @@ private static int toSafeSeed(final int seed) {
 	}
 
 	@Override
-	public void setSeed(final long seed) {
+	public synchronized void setSeed(final long seed) {
 		_x = toSafeSeed((int)seed);
 	}
 
diff --git a/prngine/src/main/java/io/jenetics/prngine/XOR64ShiftRandom.java b/prngine/src/main/java/io/jenetics/prngine/XOR64ShiftRandom.java
@@ -89,7 +89,8 @@ public static enum Shift {
 			public long shift(long x, final Param param) {
 				x ^= x << param.a;
 				x ^= x >>> param.b;
-				return x^x << param.c;
+				x ^= x << param.c;
+				return x;
 			}
 		},
 
@@ -108,7 +109,8 @@ public long shift(long x, final Param param) {
 			public long shift(long x, final Param param) {
 				x ^= x << param.c;
 				x ^= x >>> param.b;
-				return x^x << param.a;
+				x ^= x << param.a;
+				return x;
 			}
 		},
 
@@ -127,7 +129,8 @@ public long shift(long x, final Param param) {
 			public long shift(long x, final Param param) {
 				x ^= x >>> param.a;
 				x ^= x << param.b;
-				return x^x >>> param.c;
+				x ^= x >>> param.c;
+				return x;
 			}
 		},
 
@@ -146,7 +149,8 @@ public long shift(long x, final Param param) {
 			public long shift(long x, final Param param) {
 				x ^= x >>> param.c;
 				x ^= x << param.b;
-				return x^x >>> param.a;
+				x ^= x >>> param.a;
+				return x;
 			}
 		},
 
@@ -165,7 +169,8 @@ public long shift(long x, final Param param) {
 			public long shift(long x, final Param param) {
 				x ^= x << param.a;
 				x ^= x << param.c;
-				return x^x >>> param.b;
+				x ^= x >>> param.b;
+				return x;
 			}
 		},
 
@@ -184,7 +189,8 @@ public long shift(long x, final Param param) {
 			public long shift(long x, final Param param) {
 				x ^= x << param.c;
 				x ^= x << param.a;
-				return x^x >>> param.b;
+				x ^= x >>> param.b;
+				return x;
 			}
 		},
 
@@ -203,7 +209,8 @@ public long shift(long x, final Param param) {
 			public long shift(long x, final Param param) {
 				x ^= x >>> param.a;
 				x ^= x >>> param.c;
-				return x^x << param.b;
+				x ^= x << param.b;
+				return x;
 			}
 		},
 
@@ -222,7 +229,8 @@ public long shift(long x, final Param param) {
 			public long shift(long x, final Param param) {
 				x ^= x >>> param.c;
 				x ^= x >>> param.a;
-				return x^x << param.b;
+				x ^= x << param.b;
+				return x;
 			}
 		};
 
@@ -830,7 +838,7 @@ private static long toSafeSeed(final long seed) {
 	}
 
 	@Override
-	public void setSeed(final long seed) {
+	public synchronized void setSeed(final long seed) {
 		_x = toSafeSeed((int)seed);
 	}
 
@@ -847,7 +855,7 @@ public String toString() {
 	@Override
 	public int hashCode() {
 		int hash = 31;
-		hash += 17*_x + 37;
+		hash += 17*Long.hashCode(_x) + 37;
 		hash += 17*_param.hashCode() + 37;
 
 		return hash;
diff --git a/prngine/src/main/java/io/jenetics/prngine/internal/DieHarder.java b/prngine/src/main/java/io/jenetics/prngine/internal/DieHarder.java
@@ -27,6 +27,7 @@
 
 import java.io.BufferedReader;
 import java.io.IOException;
+import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.OutputStream;
 import java.io.PrintStream;
@@ -124,14 +125,15 @@ public static List<Result> test(
 		randomizerThread.start();
 
 		// The dieharder console output.
-		final BufferedReader stdout = new BufferedReader (
-			new InputStreamReader(dieharder.getInputStream())
-		);
-
 		final List<Result> results = new ArrayList<>();
-		for (String l = stdout.readLine(); l != null; l = stdout.readLine()) {
-			Result.parse(l).ifPresent(results::add);
-			System.out.println(l);
+		try (InputStream is = dieharder.getInputStream();
+			InputStreamReader ir = new InputStreamReader(is);
+			BufferedReader stdout = new BufferedReader(ir))
+		{
+			for (String l = stdout.readLine(); l != null; l = stdout.readLine()) {
+				Result.parse(l).ifPresent(results::add);
+				System.out.println(l);
+			}
 		}
 
 		dieharder.waitFor();

Original file line number	Diff line number	Diff line change
`@@ -340,7 +340,7 @@ public void setSeed(final byte[] seed) {`
`340`	`340`	`}`
`341`	`341`
`342`	`342`	`@Override`
`343`		`- public void setSeed(final long seed) {`
	`343`	`+ public synchronized void setSeed(final long seed) {`
`344`	`344`	`setSeed(PRNG.seedBytes(seed, SEED_BYTES));`
`345`	`345`	`}`
`346`	`346`
Original file line number	Diff line number	Diff line change
`@@ -521,7 +521,7 @@ public void setSeed(final byte[] seed) {`
`521`	`521`	`}`
`522`	`522`
`523`	`523`	`@Override`
`524`		`- public void setSeed(final long seed) {`
	`524`	`+ public synchronized void setSeed(final long seed) {`
`525`	`525`	`setSeed(PRNG.seedBytes(seed, SEED_BYTES));`
`526`	`526`	`}`
`527`	`527`
Original file line number	Diff line number	Diff line change
`@@ -90,7 +90,7 @@ private TLRandom(final long seed) {`
`90`	`90`	`}`
`91`	`91`
`92`	`92`	`@Override`
`93`		`- public void setSeed(final long seed) {`
	`93`	`+ public synchronized void setSeed(final long seed) {`
`94`	`94`	`if (_sentry != null) {`
`95`	`95`	`throw new UnsupportedOperationException(`
`96`	`96`	`"The 'setSeed(long)' method is not supported " +`
`@@ -328,7 +328,7 @@ public void setSeed(final byte[] seed) {`
`328`	`328`	`}`
`329`	`329`
`330`	`330`	`@Override`
`331`		`- public void setSeed(final long seed) {`
	`331`	`+ public synchronized void setSeed(final long seed) {`
`332`	`332`	`if (_state != null) _state.setSeed(seed);`
`333`	`333`	`}`
`334`	`334`
Original file line number	Diff line number	Diff line change
`@@ -91,7 +91,7 @@ private TLRandom(final long seed) {`
`91`	`91`	`}`
`92`	`92`
`93`	`93`	`@Override`
`94`		`- public void setSeed(final long seed) {`
	`94`	`+ public synchronized void setSeed(final long seed) {`
`95`	`95`	`if (_sentry != null) {`
`96`	`96`	`throw new UnsupportedOperationException(`
`97`	`97`	`"The 'setSeed(long)' method is not supported " +`
`@@ -331,7 +331,7 @@ public void setSeed(final byte[] seed) {`
`331`	`331`	`}`
`332`	`332`
`333`	`333`	`@Override`
`334`		`- public void setSeed(final long seed) {`
	`334`	`+ public synchronized void setSeed(final long seed) {`
`335`	`335`	`if (_state != null) _state.setSeed(seed);`
`336`	`336`	`}`
`337`	`337`
Original file line number	Diff line number	Diff line change
`@@ -124,7 +124,7 @@ public int nextInt() {`
`124`	`124`	`}`
`125`	`125`
`126`	`126`	`@Override`
`127`		`- public void setSeed(final long seed) {`
	`127`	`+ public synchronized void setSeed(final long seed) {`
`128`	`128`	`if (_sentry != null) {`
`129`	`129`	`throw new UnsupportedOperationException(`
`130`	`130`	`"The 'setSeed(long)' method is not supported."`
Original file line number	Diff line number	Diff line change
`@@ -137,7 +137,7 @@ public long nextLong() {`
`137`	`137`	`}`
`138`	`138`
`139`	`139`	`@Override`
`140`		`- public void setSeed(final long seed) {`
	`140`	`+ public synchronized void setSeed(final long seed) {`
`141`	`141`	`if (_sentry != null) {`
`142`	`142`	`throw new UnsupportedOperationException(`
`143`	`143`	`"The 'setSeed(long)' method is not supported."`