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Apply patch for https://issues.apache.org/activemq/browse/AMQ-1742 

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@659082 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Robert Davies 2008-05-22 11:38:33 +00:00
parent edb21db5ec
commit 0446404c47
3 changed files with 127 additions and 19 deletions
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22
activemq-core/src/main/java/org/apache/activemq/util/BitArrayBin.java
View File

@ -28,7 +28,6 @@ public class BitArrayBin {
private LinkedList<BitArray> list;
private int maxNumberOfArrays;
private int firstIndex = -1;
private int firstBin = -1;
private long lastInOrderBit=-1;
/**
@ -54,16 +53,13 @@ public class BitArrayBin {
* @return true if set
*/
public boolean setBit(long index, boolean value) {
boolean answer = true;
boolean answer = false;
BitArray ba = getBitArray(index);
if (ba != null) {
int offset = getOffset(index);
if (offset >= 0) {
answer = ba.set(offset, value);
}
if (value) {
}else {
}
}
return answer;
}
@ -117,14 +113,16 @@ public class BitArrayBin {
int bin = getBin(index);
BitArray answer = null;
if (bin >= 0) {
if (firstIndex < 0) {
firstIndex = 0;
}
if (bin >= list.size()) {
if (bin >= maxNumberOfArrays) {
int overShoot = bin - maxNumberOfArrays + 1;
while (overShoot > 0) {
list.removeFirst();
firstIndex += BitArray.LONG_SIZE;
list.add(new BitArray());
bin = list.size() - 1;
overShoot--;
}
bin = maxNumberOfArrays - 1;
}
answer = list.get(bin);
if (answer == null) {
@ -143,8 +141,8 @@ public class BitArrayBin {
*/
private int getBin(long index) {
int answer = 0;
if (firstBin < 0) {
firstBin = 0;
if (firstIndex < 0) {
firstIndex = (int) (index - (index % BitArray.LONG_SIZE));
} else if (firstIndex >= 0) {
answer = (int)((index - firstIndex) / BitArray.LONG_SIZE);
}

10
activemq-core/src/test/java/org/apache/activemq/ActiveMQMessageAuditTest.java
View File

@ -67,8 +67,9 @@ public class ActiveMQMessageAuditTest extends TestCase {
list.add(id);
assertFalse(audit.isDuplicate(id));
}
for (String id : list) {
assertTrue(audit.isDuplicate(id));
List<String> windowList = list.subList(list.size() -1 -audit.getAuditDepth(), list.size() -1);
for (String id : windowList) {
assertTrue("duplicate, id:" + id, audit.isDuplicate(id));
}
}
@ -90,8 +91,9 @@ public class ActiveMQMessageAuditTest extends TestCase {
list.add(msg);
assertFalse(audit.isDuplicate(msg.getMessageId()));
}
for (MessageReference msg : list) {
assertTrue(audit.isDuplicate(msg));
List<MessageReference> windowList = list.subList(list.size() -1 -audit.getAuditDepth(), list.size() -1);
for (MessageReference msg : windowList) {
assertTrue("duplicate msg:" + msg, audit.isDuplicate(msg));
}
}

108
activemq-core/src/test/java/org/apache/activemq/util/BitArrayBinTest.java Normal file
View File

@ -0,0 +1,108 @@
package org.apache.activemq.util;
import junit.framework.TestCase;
public class BitArrayBinTest extends TestCase {
public void testSetAroundWindow() throws Exception {
doTestSetAroundWindow(500, 2000);
doTestSetAroundWindow(512, 2000);
doTestSetAroundWindow(128, 512);
}
private void doTestSetAroundWindow(int window, int dataSize) throws Exception {
BitArrayBin toTest = new BitArrayBin(window);
for (int i=0; i <= dataSize; i++) {
assertTrue("not already set", !toTest.setBit(i, Boolean.TRUE));
}
int windowOfValidData = roundWindow(dataSize, window);
int i=dataSize;
for (; i >= dataSize -windowOfValidData; i--) {
assertTrue("was already set, id=" + i, toTest.setBit(i, Boolean.TRUE));
}
for (; i >= 0; i--) {
assertTrue("was not already set, id=" + i, !toTest.setBit(i, Boolean.TRUE));
}
for (int j= dataSize +1; j<(2*dataSize); j++) {
assertTrue("not already set: id=" + j, !toTest.setBit(j, Boolean.TRUE));
}
}
public void testSetUnsetAroundWindow() throws Exception {
doTestSetUnSetAroundWindow(500, 2000);
doTestSetUnSetAroundWindow(512, 2000);
doTestSetUnSetAroundWindow(128, 512);
}
private void doTestSetUnSetAroundWindow(int dataSize, int window) throws Exception {
BitArrayBin toTest = new BitArrayBin(window);
for (int i=0; i <=dataSize; i++) {
assertTrue("not already set", !toTest.setBit(i, Boolean.TRUE));
}
int windowOfValidData = roundWindow(dataSize, window);
for (int i=dataSize; i >= 0 && i >=dataSize -windowOfValidData; i--) {
assertTrue("was already set, id=" + i, toTest.setBit(i, Boolean.FALSE));
}
for (int i=0; i <=dataSize; i++) {
assertTrue("not already set, id:" + i, !toTest.setBit(i, Boolean.TRUE));
}
for (int j= 2*dataSize; j< 4*dataSize; j++) {
assertTrue("not already set: id=" + j, !toTest.setBit(j, Boolean.TRUE));
}
}
public void testSetAroundLongSizeMultiplier() throws Exception {
int window = 512;
int dataSize = 1000;
for (int muliplier=1; muliplier <8; muliplier++) {
for (int value=0; value <dataSize; value++) {
BitArrayBin toTest = new BitArrayBin(window);
int instance = value +muliplier*BitArray.LONG_SIZE;
assertTrue("not already set: id=" + instance, !toTest.setBit(instance, Boolean.TRUE));
assertTrue("not already set: id=" + value, !toTest.setBit(value, Boolean.TRUE));
}
}
}
public void testLargeGapInData(int window) throws Exception {
doTestLargeGapInData(128);
doTestLargeGapInData(500);
}
public void doTestLargeGapInData(int window) throws Exception {
BitArrayBin toTest = new BitArrayBin(window);
int instance = BitArray.LONG_SIZE;
assertTrue("not already set: id=" + instance, !toTest.setBit(instance, Boolean.TRUE));
instance = 12 *BitArray.LONG_SIZE;
assertTrue("not already set: id=" + instance, !toTest.setBit(instance, Boolean.TRUE));
instance = 9 *BitArray.LONG_SIZE;
assertTrue("not already set: id=" + instance, !toTest.setBit(instance, Boolean.TRUE));
}
// window moves in increments of BitArray.LONG_SIZE.
// valid data window on low end can be larger than window
private int roundWindow(int dataSetEnd, int windowSize) {
int validData = dataSetEnd - windowSize;
int validDataBin = validData / BitArray.LONG_SIZE;
validDataBin += (windowSize % BitArray.LONG_SIZE > 0? 1:0);
int startOfValid = validDataBin * BitArray.LONG_SIZE;
return dataSetEnd - startOfValid;
}
}