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From fuzzylo...@apache.org
Subject svn commit: r155990 [15/15] - in incubator/derby/code/trunk: ./ java/testing/ java/testing/org/apache/derbyTesting/functionTests/harness/ java/testing/org/apache/derbyTesting/functionTests/master/ java/testing/org/apache/derbyTesting/functionTests/suites/ java/testing/org/apache/derbyTesting/functionTests/tests/lang/ java/testing/org/apache/derbyTesting/functionTests/tests/store/ java/testing/org/apache/derbyTesting/functionTests/tests/unit/ java/testing/org/apache/derbyTesting/unitTests/ java/testing/org/apache/derbyTesting/unitTests/crypto/ java/testing/org/apache/derbyTesting/unitTests/harness/ java/testing/org/apache/derbyTesting/unitTests/lang/ java/testing/org/apache/derbyTesting/unitTests/services/ java/testing/org/apache/derbyTesting/unitTests/store/ java/testing/org/apache/derbyTesting/unitTests/util/
Date Thu, 03 Mar 2005 01:30:47 GMT
Propchange: incubator/derby/code/trunk/java/testing/org/apache/derbyTesting/unitTests/store/T_b2i.java
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Added: incubator/derby/code/trunk/java/testing/org/apache/derbyTesting/unitTests/util/BitUtil.java
URL: http://svn.apache.org/viewcvs/incubator/derby/code/trunk/java/testing/org/apache/derbyTesting/unitTests/util/BitUtil.java?view=auto&rev=155990
==============================================================================
--- incubator/derby/code/trunk/java/testing/org/apache/derbyTesting/unitTests/util/BitUtil.java
(added)
+++ incubator/derby/code/trunk/java/testing/org/apache/derbyTesting/unitTests/util/BitUtil.java
Wed Mar  2 17:30:05 2005
@@ -0,0 +1,197 @@
+/*
+
+   Derby - Class org.apache.derbyTesting.unitTests.util.BitUtil
+
+   Copyright 1998, 2005 The Apache Software Foundation or its licensors, as applicable.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+ */
+
+package org.apache.derbyTesting.unitTests.util;
+
+
+/**
+ * This class provides utility methods for 
+ * converting byte arrays to hexidecimal Strings and manipulating BIT/BIT VARYING values
as a
+ * packed vector of booleans.
+ * 
+ * <P> The BIT/BIT VARYING methods are modeled after
+ * some methods in the <I>java.util.BitSet</I> class. 
+ * An alternative to using a SQL BIT (VARYING) column
+ * in conjunction with the methods provided herein to
+ * provide bit manipulation would be to use a serialized 
+ * <I>java.util.BitSet</I> column instead.
+ * <p>
+ * This class contains the following static methods: <UL>
+ * <LI> void <B>set</B>(byte[] bytes, int position) to set a bit</LI>
+ * <LI> void <B>clear</B>(byte[] bytes, int position) to clear a bit</LI>
+ * <LI> boolean <B>get</B>(byte[] bytes, int position) to get the 
+ *		bit status </LI> </UL>
+ * <p>
+ * Since these methods effectively allow a SQL BIT to be
+ * considered as an array of booleans, all offsets (position
+ * parameters) are zero based.  So if you want to set
+ * the first bit of a BIT type, you would use <I> 
+ * set(MyBitColumn, 0) </I>.
+ * <p> 
+ * Examples: <UL>
+ * <LI> SELECT BitUtil::get(bitcol, 2) FROM mytab </LI>
+ * <LI> UPDATE mytab SET bitcol = BitUtil::set(bitcol, 2)  </LI>
+ * <LI> UPDATE mytab SET bitcol = BitUtil::clear(bitcol, 2)  </LI> </UL>
+ *
+ */ 
+public class BitUtil
+{
+	/**
+	 * Set the bit at the specified position
+	 *
+	 * @param bytes		the byte array
+	 * @param position	the bit to set, starting from zero
+	 *
+	 * @return the byte array with the set bit
+	 *
+	 * @exception IndexOutOfBoundsException on bad position
+	 */
+	public static byte[] set(byte[] bytes, int position)
+	{
+		if (position >= 0)
+		{
+			int bytepos = position >> 3;
+			if (bytepos < bytes.length)
+			{
+				int bitpos = 7 - (position % 8);
+
+				bytes[bytepos] |= (1 << bitpos);
+				return bytes;
+			}
+		}
+		throw new IndexOutOfBoundsException(Integer.toString(position));
+	}
+
+	/**
+	 * Clear the bit at the specified position
+	 *
+	 * @param bytes		the byte array
+	 * @param position	the bit to clear, starting from zero
+	 *
+	 * @return the byte array with the cleared bit
+	 *
+	 * @exception IndexOutOfBoundsException on bad position
+	 */
+	public static byte[] clear(byte[] bytes, int position)
+	{
+		if (position >= 0)
+		{
+			int bytepos = position >> 3;
+			if (bytepos < bytes.length)
+			{
+				int bitpos = 7 - (position % 8);
+				bytes[bytepos] &= ~(1 << bitpos);
+				return bytes;
+			}
+		}
+		
+		throw new IndexOutOfBoundsException(Integer.toString(position));
+	}
+
+	/**
+	 * Check to see if the specified bit is set
+	 *
+	 * @param bytes		the byte array
+	 * @param position	the bit to check, starting from zero
+	 *
+	 * @return true/false
+	 *
+	 * @exception IndexOutOfBoundsException on bad position
+	 */
+	public static boolean get(byte[] bytes, int position)
+	{
+		if (position >= 0)
+		{
+			int bytepos = position >> 3;
+			if (bytepos < bytes.length)
+			{
+				int bitpos = 7 - (position % 8);
+				return ((bytes[bytepos] & (1 << bitpos)) != 0);
+			}
+		}
+		throw new IndexOutOfBoundsException(Integer.toString(position));
+	}
+
+	private static char[] hex_table = {
+                '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 
+                'a', 'b', 'c', 'd', 'e', 'f'
+            };
+
+	/**
+		Convert a byte array to a human-readable String for debugging purposes.
+	*/
+	public static String hexDump(byte[] data)
+	{
+            byte byte_value;
+
+
+            StringBuffer str = new StringBuffer(data.length * 3);
+
+            str.append("Hex dump:\n");
+
+            for (int i = 0; i < data.length; i += 16)
+            {
+                // dump the header: 00000000: 
+                String offset = Integer.toHexString(i);
+
+                // "0" left pad offset field so it is always 8 char's long.
+                for (int offlen = offset.length(); offlen < 8; offlen++) 
+                    str.append("0");
+                str.append(offset);
+                str.append(":");
+
+                // dump hex version of 16 bytes per line.
+                for (int j = 0; (j < 16) && ((i + j) < data.length); j++)
+                {
+                    byte_value = data[i + j];
+
+                    // add spaces between every 2 bytes.
+                    if ((j % 2) == 0)
+                        str.append(" ");
+
+                    // dump a single byte.
+                    byte high_nibble = (byte) ((byte_value & 0xf0) >>> 4); 
+                    byte low_nibble  = (byte) (byte_value & 0x0f); 
+
+                    str.append(hex_table[high_nibble]);
+                    str.append(hex_table[low_nibble]);
+                }
+
+                // dump ascii version of 16 bytes
+                str.append("  ");
+
+                for (int j = 0; (j < 16) && ((i + j) < data.length); j++)
+                {
+                    char char_value = (char) data[i + j]; 
+
+                    // RESOLVE (really want isAscii() or isPrintable())
+                    if (Character.isLetterOrDigit(char_value))
+                        str.append(String.valueOf(char_value));
+                    else
+                        str.append(".");
+                }
+                    
+                // new line
+                str.append("\n");
+            }
+            return(str.toString());
+
+	}
+}

Propchange: incubator/derby/code/trunk/java/testing/org/apache/derbyTesting/unitTests/util/BitUtil.java
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Added: incubator/derby/code/trunk/java/testing/org/apache/derbyTesting/unitTests/util/MsgTrace.java
URL: http://svn.apache.org/viewcvs/incubator/derby/code/trunk/java/testing/org/apache/derbyTesting/unitTests/util/MsgTrace.java?view=auto&rev=155990
==============================================================================
--- incubator/derby/code/trunk/java/testing/org/apache/derbyTesting/unitTests/util/MsgTrace.java
(added)
+++ incubator/derby/code/trunk/java/testing/org/apache/derbyTesting/unitTests/util/MsgTrace.java
Wed Mar  2 17:30:05 2005
@@ -0,0 +1,89 @@
+/*
+
+   Derby - Class org.apache.derbyTesting.unitTests.util.MsgTrace
+
+   Copyright 1998, 2005 The Apache Software Foundation or its licensors, as applicable.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+ */
+
+package org.apache.derbyTesting.unitTests.util;
+
+import org.apache.derby.iapi.services.monitor.Monitor;
+import org.apache.derby.iapi.services.sanity.SanityManager;
+import org.apache.derby.iapi.services.stream.HeaderPrintWriter;
+import org.apache.derby.iapi.services.property.PropertyUtil;
+
+import org.apache.derby.iapi.services.stream.InfoStreams;
+
+// static methods
+// set up automatically first time it's used
+// default trigger is time-bomb, but refer to config for other
+//    possibilities
+// add timestamps, thread ID's, (stack location info?)
+
+public class MsgTrace implements Runnable {
+	//
+	// Number of seconds the memory trace waits before
+	// dumping its output.
+ 	public static final String
+	DELAY_PARAM_NAME = "derby.memoryTrace.bombDelay";
+
+	public static final String
+	RING_BUFFER_SIZE_PARAM_NAME = "derby.memoryTrace.ringBufferSize";
+
+	private static MsgTrace singleton = null;
+	long bombDelay; // 30 minutes
+	int ringBufferSize;
+	// InMemoryTrace recorder;
+	HeaderPrintWriter output;
+
+	private MsgTrace() {
+
+		output = Monitor.getMonitor().getSystemStreams().stream();
+
+		bombDelay = PropertyUtil.getSystemInt(DELAY_PARAM_NAME, 30 * 60); // 30 minutes default
+		bombDelay *= 1000;
+
+		ringBufferSize = PropertyUtil.getSystemInt(RING_BUFFER_SIZE_PARAM_NAME, 99/*InMemoryTrace.DEFAULT_RING_BUFFER_SIZE*/);

+
+		// recorder  = new InMemoryTrace(ringBufferSize);
+
+		Thread t = new Thread(this);
+		t.setDaemon(true);
+		t.start();
+	}
+	
+	public static void traceString(String msg) {
+		if (singleton == null)
+			singleton = new MsgTrace();
+		singleton.trace(msg);
+	}
+
+	private void trace(String msg) {
+// 		// wrap msg in a Dumpable
+// 		d.timestamp = System.currentTimeMillis();
+// 		d.threadId = Thread.currentThread().getName();
+// 		d.msg = msg;
+		// recorder.traceString(msg);
+	}
+
+	public void run() {
+		try { Thread.sleep(bombDelay); } catch (InterruptedException ie) {}
+
+		// recorder.dump(output);
+
+		System.exit(1);
+	}
+}

Propchange: incubator/derby/code/trunk/java/testing/org/apache/derbyTesting/unitTests/util/MsgTrace.java
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