Package com.tangosol.coherence.servlet

Class LogThreadsHoldingLockAgent

java.lang.Object

com.tangosol.util.Base

com.tangosol.net.AbstractInvocable

com.tangosol.coherence.servlet.LogThreadsHoldingLockAgent

All Implemented Interfaces:

ExternalizableLite, Invocable, InvocableInOrder, PriorityTask, Serializable, Runnable

public class LogThreadsHoldingLockAgent
extends AbstractInvocable
implements ExternalizableLite

An invocation service that logs the stacktraces of all threads holding a lock for a session.

Version:

Coherence 3.6

Author:

jk 2009.12.10

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class com.tangosol.util.Base

Base.LoggingWriter

Field Summary

Fields

Modifier and Type	Field	Description
static final String	THREAD_OWNING_MSG
static final String	THREADS_OWNING_MSG

Fields inherited from class com.tangosol.util.Base

DEFAULT_LOAD_FACTOR, LOG_ALWAYS, LOG_CONFIG, LOG_DEBUG, LOG_ERR, LOG_INFO, LOG_MAX, LOG_MIN, LOG_QUIET, LOG_WARN, POWER_0, POWER_G, POWER_K, POWER_M, POWER_T, UNIT_D, UNIT_H, UNIT_M, UNIT_MS, UNIT_NS, UNIT_S, UNIT_US

Fields inherited from interface com.tangosol.net.PriorityTask

SCHEDULE_FIRST, SCHEDULE_IMMEDIATE, SCHEDULE_STANDARD, TIMEOUT_DEFAULT, TIMEOUT_NONE

Constructor Summary

Constructors

Constructor	Description
LogThreadsHoldingLockAgent()	Constructor
LogThreadsHoldingLockAgent(String sId)	Constructor

Method Summary

Modifier and Type	Method	Description
protected void	logThreadStackTraces(String sId, AbstractHttpSessionCollection collection)
void	readExternal(DataInput in)	Restore the contents of this object by loading the object's state from the passed DataInput object.
void	run()	Log the stacktraces of all the threads holding a lock for the session with id m_sId
protected StringBuilder	threadStackTrace(Thread t)	Create a StringBuilder which contains the stacktrace for the Thread argument
void	writeExternal(DataOutput out)	Save the contents of this object by storing the object's state into the passed DataOutput object.
protected void	writeToLog(StringBuilder s)	Delegating method for logging for mock testing purposes

Methods inherited from class com.tangosol.net.AbstractInvocable

getExecutionTimeoutMillis, getRequestTimeoutMillis, getResult, getSchedulingPriority, getService, init, isRespondInOrder, runCanceled, setResult

Methods inherited from class com.tangosol.util.Base

azzert, azzert, azzert, azzertFailed, breakLines, breakLines, capitalize, checkNotEmpty, checkNotNull, checkRange, computeSafeWaitTime, decimalValue, dup, dup, ensureBigDecimal, ensureClassLoader, ensureRuntimeException, ensureRuntimeException, equals, equalsDeep, err, err, err, err, err, escape, formatDateTime, getCallerStackFrame, getCommonMonitor, getCommonMonitor, getCommonMonitor, getContextClassLoader, getContextClassLoader, getDeepMessage, getErr, getLastSafeTimeMillis, getLog, getMaxDecDigits, getMaxHexDigits, getOriginalException, getOut, getProcessRandom, getRandom, getRandomBinary, getRandomBinary, getRandomString, getSafeTimeMillis, getStackFrame, getStackFrames, getStackTrace, getStackTrace, getStackTrace, getThreadFactory, getTimeZone, getUpTimeMillis, hashCode, hexValue, indentString, indentString, isDecimal, isHex, isLogEcho, isOctal, log, log, log, log, log, makeInteger, makeLong, makeThread, mergeArray, mergeBooleanArray, mergeByteArray, mergeCharArray, mergeDoubleArray, mergeFloatArray, mergeIntArray, mergeLongArray, mod, mod, newHashMap, newHashMap, newHashSet, newHashSet, octalValue, out, out, out, out, out, pad, parseBandwidth, parseBandwidth, parseDelimitedString, parseHex, parseHex, parseMemorySize, parseMemorySize, parsePercentage, parseTime, parseTime, parseTimeNanos, parseTimeNanos, printStackTrace, randomize, randomize, randomize, randomize, read, read, read, read, read, read, read, replace, setErr, setLog, setLogEcho, setOut, sleep, toBandwidthString, toBandwidthString, toCharEscape, toCrc, toCrc, toCrc, toCrc, toCrc, toDecString, toDelimitedString, toDelimitedString, toDelimitedString, toDelimitedString, toHex, toHex, toHexDump, toHexEscape, toHexEscape, toHexEscape, toHexEscape, toHexString, toMemorySizeString, toMemorySizeString, toQuotedCharEscape, toQuotedStringEscape, toSqlString, toString, toString, toStringEscape, toUnicodeEscape, trace, trace, trace, trace, trace, trace, trace, trace, trace, truncateString, truncateString, wait

Methods inherited from class java.lang.Object

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

Field Details

THREAD_OWNING_MSG

public static final String THREAD_OWNING_MSG

See Also:

• Constant Field Values

THREADS_OWNING_MSG

public static final String THREADS_OWNING_MSG

See Also:

• Constant Field Values

Constructor Details

LogThreadsHoldingLockAgent

public LogThreadsHoldingLockAgent()

Constructor

LogThreadsHoldingLockAgent

public LogThreadsHoldingLockAgent(String sId)

Constructor

Parameters:

sId - session id

Method Details

run

public void run()

Log the stacktraces of all the threads holding a lock for the session with id m_sId

Specified by:

run in interface Invocable

Specified by:

run in interface Runnable

logThreadStackTraces

protected void logThreadStackTraces(String sId,
 AbstractHttpSessionCollection collection)

writeToLog

protected void writeToLog(StringBuilder s)

Delegating method for logging for mock testing purposes

Parameters:

s - the string to log

threadStackTrace

protected StringBuilder threadStackTrace(Thread t)

Create a StringBuilder which contains the stacktrace for the Thread argument

Parameters:

t - the Thread

Returns:

a StringBuilder with the stacktrace for t

readExternal

public void readExternal(DataInput in)
                  throws IOException

Restore the contents of this object by loading the object's state from the passed DataInput object.

Specified by:

readExternal in interface ExternalizableLite

Parameters:

in - the DataInput stream to read data from in order to restore the state of this object

Throws:

IOException - if an I/O exception occurs

writeExternal

public void writeExternal(DataOutput out)
                   throws IOException

Save the contents of this object by storing the object's state into the passed DataOutput object.

Specified by:

writeExternal in interface ExternalizableLite

Parameters:

out - the DataOutput stream to write the state of this object to

Throws:

IOException - if an I/O exception occurs