Interface ClassUnloadRequest

All Superinterfaces:

EventRequest, Mirror

public interface ClassUnloadRequest
extends EventRequest

Request for notification when a class is unloaded in the target VM. When an enabled ClassUnloadRequest is satisfied, a event set containing an ClassUnloadEvent will be placed on the EventQueue. The collection of existing ClassUnloadRequests is managed by the EventRequestManager

Refer to the Java Virtual Machine Specification for more information on class unloading.

Since:

1.3

See Also:

• ClassUnloadEvent
• EventQueue
• EventRequestManager

Field Summary

Fields declared in interface EventRequest

SUSPEND_ALL, SUSPEND_EVENT_THREAD, SUSPEND_NONE

Modifier and Type	Field	Description
static final int	SUSPEND_ALL	Suspend all threads when the event occurs
static final int	SUSPEND_EVENT_THREAD	Suspend only the thread which generated the event when the event occurs
static final int	SUSPEND_NONE	Suspend no threads when the event occurs

Method Summary

Modifier and Type	Method	Description
void	addClassExclusionFilter(String classPattern)	Restricts the events generated by this request to the unloading of reference types whose name does not match a restricted regular expression.
void	addClassFilter(String classPattern)	Restricts the events generated by this request to the unloading of reference types whose name matches a restricted regular expression.

Methods declared in interface EventRequest

addCountFilter, disable, enable, getProperty, isEnabled, putProperty, setEnabled, setSuspendPolicy, suspendPolicy

Modifier and Type	Method	Description
void	addCountFilter(int count)	Limit the requested event to be reported at most once after a given number of occurrences.
void	disable()	Same as setEnabled(false).
void	enable()	Same as setEnabled(true).
Object	getProperty(Object key)	Returns the value of the property with the specified key.
boolean	isEnabled()	Determines if this event request is currently enabled.
void	putProperty(Object key, Object value)	Add an arbitrary key/value "property" to this request.
void	setEnabled(boolean val)	Enables or disables this event request.
void	setSuspendPolicy(int policy)	Determines the threads to suspend when the requested event occurs in the target VM.
int	suspendPolicy()	Returns a value which describes the threads to suspend when the requested event occurs in the target VM.

Methods declared in interface Mirror

toString, virtualMachine

Modifier and Type	Method	Description
String	toString()	Returns a String describing this mirror
VirtualMachine	virtualMachine()	Gets the VirtualMachine to which this Mirror belongs.

Method Details

addClassFilter

void addClassFilter(String classPattern)

Restricts the events generated by this request to the unloading of reference types whose name matches a restricted regular expression. Regular expressions are limited to exact matches and patterns that begin with '*' or end with '*'; for example, "*.Foo" or "java.*".

Parameters:

classPattern - the pattern String to filter for.

Throws:

InvalidRequestStateException - if this request is currently enabled or has been deleted. Filters may be added only to disabled requests.

addClassExclusionFilter

void addClassExclusionFilter(String classPattern)

Restricts the events generated by this request to the unloading of reference types whose name does not match a restricted regular expression. Regular expressions are limited to exact matches and patterns that begin with '*' or end with '*'; for example, "*.Foo" or "java.*".

Parameters:

classPattern - the pattern String to filter against.

Throws:

InvalidRequestStateException - if this request is currently enabled or has been deleted. Filters may be added only to disabled requests.