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StepRequest (Java Debug Interface) - Java 2 SDK v1.4.2, Java 2 SDK 英文文档

Java Debug Interface

com.sun.jdi.request
Interface StepRequest

All Superinterfaces:
EventRequest, Mirror

public interface StepRequest
extends EventRequest

Request for notification when a step occurs in the target VM. When an enabled StepRequest is satisfied, an event set containing a StepEvent will be placed on the EventQueue. The collection of existing StepRequests is managed by the EventRequestManager

Since:
1.3
See Also:
StepEvent, EventQueue, EventRequestManager

Field Summary
static int STEP_INTO
          Step into any newly pushed frames
static int STEP_LINE
          Step to the next location on a different line
static int STEP_MIN
          Step to the next available location
static int STEP_OUT
          Step out of the current frame
static int STEP_OVER
          Step over any newly pushed frames
 
Fields inherited from interface com.sun.jdi.request.EventRequest
SUSPEND_ALL, SUSPEND_EVENT_THREAD, SUSPEND_NONE
 
Method Summary
 void addClassExclusionFilter(String classPattern)
          Restricts the events generated by this request to those whose location is in a class whose name does not match a restricted regular expression.
 void addClassFilter(ReferenceType refType)
          Restricts the events generated by this request to those whose location is in the given reference type or any of its subtypes.
 void addClassFilter(String classPattern)
          Restricts the events generated by this request to those whose location is in a class whose name matches a restricted regular expression.
 void addInstanceFilter(ObjectReference instance)
          Restricts the events generated by this request to those in which the currently executing instance ("this") is the object specified.
 int depth()
           
 int size()
           
 ThreadReference thread()
           
 
Methods inherited from interface com.sun.jdi.request.EventRequest
addCountFilter, disable, enable, getProperty, isEnabled, putProperty, setEnabled, setSuspendPolicy, suspendPolicy
 
Methods inherited from interface com.sun.jdi.Mirror
toString, virtualMachine
 

Field Detail

STEP_INTO

public static final int STEP_INTO
Step into any newly pushed frames

See Also:
Constant Field Values

STEP_OVER

public static final int STEP_OVER
Step over any newly pushed frames

See Also:
Constant Field Values

STEP_OUT

public static final int STEP_OUT
Step out of the current frame

See Also:
Constant Field Values

STEP_MIN

public static final int STEP_MIN
Step to the next available location

See Also:
Constant Field Values

STEP_LINE

public static final int STEP_LINE
Step to the next location on a different line

See Also:
Constant Field Values
Method Detail

thread

public ThreadReference thread()
Returns:
the thread on which the step event is being requested.

size

public int size()
Returns:
the step size

depth

public int depth()
Returns:
the step depth

addClassFilter

public void addClassFilter(ReferenceType refType)
Restricts the events generated by this request to those whose location is in the given reference type or any of its subtypes. An event will be generated for any location in a reference type that can be safely cast to the given reference type.

Parameters:
refType - the reference type to filter on.
Throws:
InvalidRequestStateException - if this request is currently enabled or has been deleted. Filters may be added only to disabled requests.

addClassFilter

public void addClassFilter(String classPattern)
Restricts the events generated by this request to those whose location is in a class 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

public void addClassExclusionFilter(String classPattern)
Restricts the events generated by this request to those whose location is in a class 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.

addInstanceFilter

public void addInstanceFilter(ObjectReference instance)
Restricts the events generated by this request to those in which the currently executing instance ("this") is the object specified.

Not all targets support this operation. Use VirtualMachine.canUseInstanceFilters() to determine if the operation is supported.

Parameters:
instance - the object which must be the current instance in order to pass this filter.
Throws:
UnsupportedOperationException - if the target virtual machine does not support this operation.
InvalidRequestStateException - if this request is currently enabled or has been deleted. Filters may be added only to disabled requests.
Since:
1.4

Java Debug Interface