Module openj9.dtfj

Package com.ibm.j9ddr.vm29.tools.ddrinteractive.monitors

Class DeadlockUtils

java.lang.Object

com.ibm.j9ddr.vm29.tools.ddrinteractive.monitors.DeadlockUtils

public class DeadlockUtils
extends Object

Constructor Summary

Constructors

Constructor	Description
DeadlockUtils()

Method Summary

Modifier and Type	Method	Description
static void	findThreadCycle(com.ibm.j9ddr.vm29.pointer.generated.J9ThreadPointer aThread, HashMap<Integer,NativeDeadlockGraphNode> deadlocks, HashMap<com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer,Object> objectMonitorsMap)
static HashMap<com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer,Object>	readObjectMonitors(com.ibm.j9ddr.vm29.pointer.generated.J9JavaVMPointer vm)	Returns a hash map of Object Pointers to their respective mutex (Object Monitor or System Monitor)
static void	writeDeadlockNode(NativeDeadlockGraphNode node, boolean isCycleHead, HashMap<com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer,Object> objectMonitorsMap, PrintStream out)	'

Methods declared in class java.lang.Object

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

Constructor Detail

DeadlockUtils

public DeadlockUtils()

Method Detail

findThreadCycle

public static void findThreadCycle(com.ibm.j9ddr.vm29.pointer.generated.J9ThreadPointer aThread,
                                   HashMap<Integer,NativeDeadlockGraphNode> deadlocks,
                                   HashMap<com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer,Object> objectMonitorsMap)
                            throws CorruptDataException

Parameters:

vmThread -

map -

Throws:

CorruptDataException

writeDeadlockNode

public static void writeDeadlockNode(NativeDeadlockGraphNode node,
                                     boolean isCycleHead,
                                     HashMap<com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer,Object> objectMonitorsMap,
                                     PrintStream out)
                              throws CorruptDataException

'

Parameters:

node -

isCycleHead -

objectMonitorsMap -

out -

Throws:

CorruptDataException

readObjectMonitors

public static HashMap<com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer,Object> readObjectMonitors(com.ibm.j9ddr.vm29.pointer.generated.J9JavaVMPointer vm)
                                                                                                     throws CorruptDataException

Returns a hash map of Object Pointers to their respective mutex (Object Monitor or System Monitor)

Parameters:

vm -

Returns:

Throws:

CorruptDataException