org.apache.derbyTesting.functionTests.tests.store

Class LiveLockTest

java.lang.Object

junit.framework.Assert

junit.framework.TestCase

org.apache.derbyTesting.junit.BaseTestCase

org.apache.derbyTesting.junit.BaseJDBCTestCase

org.apache.derbyTesting.functionTests.tests.store.LiveLockTest

All Implemented Interfaces:

junit.framework.Test

public class LiveLockTest
extends BaseJDBCTestCase

Test to test two threads doing staggered select then update of a row Staggered selects should not starve the update.

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.LinkedList	listExceptions
private java.lang.Object	syncObject
private boolean	updateDone

Fields inherited from class org.apache.derbyTesting.junit.BaseTestCase

DEFAULT_DB_DIR, DERBY_LOG, ERRORSTACKTRACEFILE

Constructor Summary

Constructors

Constructor and Description
LiveLockTest(java.lang.String name)

Method Summary

Modifier and Type	Method and Description
private void	checkExceptions() There should be no exceptions.
private java.lang.Thread[]	createThreads()
boolean	isUpdateDone()
private void	selectWorker(int delay)
void	setUpdateDone(boolean updateDone)
static junit.framework.Test	suite()
void	testLiveLock() Start three threads.
private void	updateWorker()
private void	waitForThreads(java.lang.Thread[] t)

Methods inherited from class org.apache.derbyTesting.junit.BaseJDBCTestCase

assertCallError, assertCheckTable, assertCompileError, assertEquals, assertEquals, assertEquals, assertEquivalentDataType, assertErrorCode, assertGetIntError, assertNextError, assertPreparedStatementError, assertSQLExceptionEquals, assertSQLState, assertSQLState, assertStatementError, assertStatementError, assertStatementError, assertStatementError, assertStatementErrorUnordered, assertTableRowCount, assertUpdateCount, assertUpdateCount, assertWarning, checkAllConsistency, checkEstimatedRowCount, closeStatement, commit, createStatement, createStatement, createStatement, dropTable, dropTable, dropView, dropView, emptyStatementCache, getClientTransactionID, getConnection, getDatabaseProperty, getLastSQLException, initializeConnection, openConnection, openDefaultConnection, openDefaultConnection, openDefaultConnection, openUserConnection, prepareCall, prepareCall, prepareCall, prepareStatement, prepareStatement, prepareStatement, prepareStatement, prepareStatement, prepareStatement, rollback, runBare, runBareOverridable, runScript, runScript, runSQLCommands, setAutoCommit, tearDown, usingDB2Client, usingDerbyNetClient, usingEmbedded

Methods inherited from class org.apache.derbyTesting.junit.BaseTestCase

alarm, assertDirectoryDeleted, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertExecJavaCmdAsExpected, assertLaunchedJUnitTestMethod, assertLaunchedJUnitTestMethod, assertSecurityManager, assertThrowableEquals, currentDirectory, execJavaCmd, execJavaCmd, fail, getClassVersionMajor, getEmmaJar, getFailureFolder, getFilesWith, getJavaExecutableName, getSystemProperty, getTestConfiguration, getTestResource, hasInterruptibleIO, isCVM, isIBMJVM, isJ9Platform, isJava5, isJava7, isJava8, isPhoneME, isPlatform, isSunJVM, isWindowsPlatform, openTestResource, println, printStackTrace, readProcessOutput, removeDirectory, removeDirectory, removeFiles, removeSystemProperty, runsWithEmma, runsWithJaCoCo, setSystemProperty, sleep, sleepAtLeastOneTick, traceit

Methods inherited from class junit.framework.TestCase

assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertFalse, assertFalse, assertNotNull, assertNotNull, assertNotSame, assertNotSame, assertNull, assertNull, assertSame, assertSame, assertTrue, assertTrue, countTestCases, createResult, fail, fail, failNotEquals, failNotSame, failSame, format, getName, run, run, runTest, setName, setUp, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

listExceptions

private java.util.LinkedList listExceptions

syncObject

private java.lang.Object syncObject

updateDone

private boolean updateDone

Constructor Detail

LiveLockTest

public LiveLockTest(java.lang.String name)

Method Detail

testLiveLock

public void testLiveLock()
                  throws java.sql.SQLException

Start three threads. Two doing staggered selets and a third trying to do an update. The update should not be starved by the staggered selects.

Throws:

java.sql.SQLException

checkExceptions

private void checkExceptions()
                      throws java.sql.SQLException

There should be no exceptions. The update should have gotten through

Throws:

java.sql.SQLException - if any occurred

waitForThreads

private void waitForThreads(java.lang.Thread[] t)

createThreads

private java.lang.Thread[] createThreads()

selectWorker

private void selectWorker(int delay)

updateWorker

private void updateWorker()

suite

public static junit.framework.Test suite()

isUpdateDone

public boolean isUpdateDone()

setUpdateDone

public void setUpdateDone(boolean updateDone)