Module jdk.jdi

Interface EventRequestManager

All Superinterfaces:
Mirror

public interface EventRequestManager
extends Mirror
Manages the creation and deletion of EventRequests. A single implementor of this interface exists in a particular VM and is accessed through VirtualMachine.eventRequestManager()
Since:
1.3
See Also:
EventRequest, Event, BreakpointRequest, BreakpointEvent, VirtualMachine
  • Method Details

    • createClassPrepareRequest

      ClassPrepareRequest createClassPrepareRequest()
      Creates a new disabled ClassPrepareRequest. The new event request is added to the list managed by this EventRequestManager. Use EventRequest.enable() to activate this event request.
      Returns:
      the created ClassPrepareRequest
    • createClassUnloadRequest

      ClassUnloadRequest createClassUnloadRequest()
      Creates a new disabled ClassUnloadRequest. The new event request is added to the list managed by this EventRequestManager. Use EventRequest.enable() to activate this event request.
      Returns:
      the created ClassUnloadRequest
    • createThreadStartRequest

      ThreadStartRequest createThreadStartRequest()
      Creates a new disabled ThreadStartRequest. The new event request is added to the list managed by this EventRequestManager. Use EventRequest.enable() to activate this event request.
      Returns:
      the created ThreadStartRequest
    • createThreadDeathRequest

      ThreadDeathRequest createThreadDeathRequest()
      Creates a new disabled ThreadDeathRequest. The new event request is added to the list managed by this EventRequestManager. Use EventRequest.enable() to activate this event request.
      Returns:
      the created ThreadDeathRequest
    • createExceptionRequest

      ExceptionRequest createExceptionRequest​(ReferenceType refType, boolean notifyCaught, boolean notifyUncaught)
      Creates a new disabled ExceptionRequest. The new event request is added to the list managed by this EventRequestManager. Use EventRequest.enable() to activate this event request.

      A specific exception type and its subclasses can be selected for exception events. Caught exceptions, uncaught exceptions, or both can be selected. Note, however, that at the time an exception is thrown, it is not always possible to determine whether it is truly caught. See ExceptionEvent.catchLocation() for details.

      Parameters:
      refType - If non-null, specifies that exceptions which are instances of refType will be reported. Note: this will include instances of sub-types. If null, all instances will be reported
      notifyCaught - If true, caught exceptions will be reported.
      notifyUncaught - If true, uncaught exceptions will be reported.
      Returns:
      the created ExceptionRequest
    • createMethodEntryRequest

      MethodEntryRequest createMethodEntryRequest()
      Creates a new disabled MethodEntryRequest. The new event request is added to the list managed by this EventRequestManager. Use EventRequest.enable() to activate this event request.
      Returns:
      the created MethodEntryRequest
    • createMethodExitRequest

      MethodExitRequest createMethodExitRequest()
      Creates a new disabled MethodExitRequest. The new event request is added to the list managed by this EventRequestManager. Use EventRequest.enable() to activate this event request.
      Returns:
      the created MethodExitRequest
    • createMonitorContendedEnterRequest

      MonitorContendedEnterRequest createMonitorContendedEnterRequest()
      Creates a new disabled MonitorContendedEnterRequest. The new event request is added to the list managed by this EventRequestManager. Use EventRequest.enable() to activate this event request. Not all target virtual machines support this operation. Use VirtualMachine.canRequestMonitorEvents() to determine if the operation is supported.
      Returns:
      the created MonitorContendedEnterRequest
      Throws:
      UnsupportedOperationException - if the target VM does not support this operation.
      Since:
      1.6
    • createMonitorContendedEnteredRequest

      MonitorContendedEnteredRequest createMonitorContendedEnteredRequest()
      Creates a new disabled MonitorContendedEnteredRequest. The new event request is added to the list managed by this EventRequestManager. Use EventRequest.enable() to activate this event request. Not all target virtual machines support this operation. Use VirtualMachine.canRequestMonitorEvents() to determine if the operation is supported.
      Returns:
      the created MonitorContendedEnteredRequest
      Throws:
      UnsupportedOperationException - if the target VM does not support this operation.
      Since:
      1.6
    • createMonitorWaitRequest

      MonitorWaitRequest createMonitorWaitRequest()
      Creates a new disabled MonitorWaitRequest. The new event request is added to the list managed by this EventRequestManager. Use EventRequest.enable() to activate this event request. Not all target virtual machines support this operation. Use VirtualMachine.canRequestMonitorEvents() to determine if the operation is supported.
      Returns:
      the created MonitorWaitRequest
      Throws:
      UnsupportedOperationException - if the target VM does not support this operation.
      Since:
      1.6
    • createMonitorWaitedRequest

      MonitorWaitedRequest createMonitorWaitedRequest()
      Creates a new disabled MonitorWaitedRequest. The new event request is added to the list managed by this EventRequestManager. Use EventRequest.enable() to activate this event request. Not all target virtual machines support this operation. Use VirtualMachine.canRequestMonitorEvents() to determine if the operation is supported.
      Returns:
      the created MonitorWaitedRequest
      Throws:
      UnsupportedOperationException - if the target VM does not support this operation.
      Since:
      1.6
    • createStepRequest

      StepRequest createStepRequest​(ThreadReference thread, int size, int depth)
      Creates a new disabled StepRequest. The new event request is added to the list managed by this EventRequestManager. Use EventRequest.enable() to activate this event request.

      The returned request will control stepping only in the specified thread; all other threads will be unaffected. A size value of StepRequest.STEP_MIN will generate a step event each time the code index changes. It represents the smallest step size available and often maps to the instruction level. A size value of StepRequest.STEP_LINE will generate a step event each time the source line changes unless line number information is not available, in which case a STEP_MIN will be done instead. For example, no line number information is available during the execution of a method that has been rendered obsolete by by a VirtualMachine.redefineClasses(java.util.Map<? extends com.sun.jdi.ReferenceType, byte[]>) operation. A depth value of StepRequest.STEP_INTO will generate step events in any called methods. A depth value of StepRequest.STEP_OVER restricts step events to the current frame or caller frames. A depth value of StepRequest.STEP_OUT restricts step events to caller frames only. All depth restrictions are relative to the call stack immediately before the step takes place.

      Only one pending step request is allowed per thread.

      Note that a typical debugger will want to cancel stepping after the first step is detected. Thus a next line method would do the following:

      
           EventRequestManager mgr = myVM.{@link VirtualMachine#eventRequestManager eventRequestManager}();
           StepRequest request = mgr.createStepRequest(myThread,
                                                       StepRequest.{@link StepRequest#STEP_LINE STEP_LINE},
                                                       StepRequest.{@link StepRequest#STEP_OVER STEP_OVER});
           request.{@link EventRequest#addCountFilter addCountFilter}(1);  // next step only
           request.enable();
           myVM.{@link VirtualMachine#resume resume}();
       

      Parameters:
      thread - the thread in which to step
      depth - the step depth
      size - the step size
      Returns:
      the created StepRequest
      Throws:
      DuplicateRequestException - if there is already a pending step request for the specified thread.
      IllegalArgumentException - if the size or depth arguments contain illegal values.
    • createBreakpointRequest

      BreakpointRequest createBreakpointRequest​(Location location)
      Creates a new disabled BreakpointRequest. The given Location must have a valid (that is, non-negative) code index. The new breakpoint is added to the list managed by this EventRequestManager. Multiple breakpoints at the same location are permitted. Use EventRequest.enable() to activate this event request.
      Parameters:
      location - the location of the new breakpoint.
      Returns:
      the created BreakpointRequest
      Throws:
      NativeMethodException - if location is within a native method.
    • createAccessWatchpointRequest

      AccessWatchpointRequest createAccessWatchpointRequest​(Field field)
      Creates a new disabled watchpoint which watches accesses to the specified field. The new watchpoint is added to the list managed by this EventRequestManager. Multiple watchpoints on the same field are permitted. Use EventRequest.enable() to activate this event request.

      Not all target virtual machines support this operation. Use VirtualMachine.canWatchFieldAccess() to determine if the operation is supported.

      Parameters:
      field - the field to watch
      Returns:
      the created watchpoint
      Throws:
      UnsupportedOperationException - if the target virtual machine does not support this operation.
    • createModificationWatchpointRequest

      ModificationWatchpointRequest createModificationWatchpointRequest​(Field field)
      Creates a new disabled watchpoint which watches accesses to the specified field. The new watchpoint is added to the list managed by this EventRequestManager. Multiple watchpoints on the same field are permitted. Use EventRequest.enable() to activate this event request.

      Not all target virtual machines support this operation. Use VirtualMachine.canWatchFieldModification() to determine if the operation is supported.

      Parameters:
      field - the field to watch
      Returns:
      the created watchpoint
      Throws:
      UnsupportedOperationException - if the target virtual machine does not support this operation.
    • createVMDeathRequest

      VMDeathRequest createVMDeathRequest()
      Creates a new disabled VMDeathRequest. The new request is added to the list managed by this EventRequestManager. Use EventRequest.enable() to activate this event request.

      This request (if enabled) will cause a VMDeathEvent to be sent on termination of the target VM.

      A VMDeathRequest with a suspend policy of SUSPEND_ALL can be used to assure processing of incoming SUSPEND_NONE or SUSPEND_EVENT_THREAD events before VM death. If all event processing is being done in the same thread as event sets are being read, enabling the request is all that is needed since the VM will be suspended until the EventSet containing the VMDeathEvent is resumed.

      Not all target virtual machines support this operation. Use VirtualMachine.canRequestVMDeathEvent() to determine if the operation is supported.

      Returns:
      the created request
      Throws:
      UnsupportedOperationException - if the target VM does not support this operation.
      Since:
      1.4
    • deleteEventRequest

      void deleteEventRequest​(EventRequest eventRequest)
      Removes an eventRequest. The eventRequest is disabled and the removed from the requests managed by this EventRequestManager. Once the eventRequest is deleted, no operations (for example, EventRequest.setEnabled(boolean)) are permitted - attempts to do so will generally cause an InvalidRequestStateException. No other eventRequests are effected.

      Because this method changes the underlying lists of event requests, attempting to directly delete from a list returned by a request accessor (e.g. below):

         Iterator iter = requestManager.stepRequests().iterator();
         while (iter.hasNext()) {
            requestManager.deleteEventRequest(iter.next());
        }
       
      may cause a ConcurrentModificationException. Instead use deleteEventRequests(List) or copy the list before iterating.

      Parameters:
      eventRequest - the eventRequest to remove
    • deleteEventRequests

      void deleteEventRequests​(List<? extends EventRequest> eventRequests)
      Removes a list of EventRequests.
      Parameters:
      eventRequests - the list of eventRequests to remove
      See Also:
      deleteEventRequest(EventRequest)
    • deleteAllBreakpoints

      void deleteAllBreakpoints()
      Remove all breakpoints managed by this EventRequestManager.
      See Also:
      deleteEventRequest(EventRequest)
    • stepRequests

      List<StepRequest> stepRequests()
      Return an unmodifiable list of the enabled and disabled step requests. This list is a live view of these requests and thus changes as requests are added and deleted.
      Returns:
      the all StepRequest objects.
    • classPrepareRequests

      List<ClassPrepareRequest> classPrepareRequests()
      Return an unmodifiable list of the enabled and disabled class prepare requests. This list is a live view of these requests and thus changes as requests are added and deleted.
      Returns:
      the all ClassPrepareRequest objects.
    • classUnloadRequests

      List<ClassUnloadRequest> classUnloadRequests()
      Return an unmodifiable list of the enabled and disabled class unload requests. This list is a live view of these requests and thus changes as requests are added and deleted.
      Returns:
      the all ClassUnloadRequest objects.
    • threadStartRequests

      List<ThreadStartRequest> threadStartRequests()
      Return an unmodifiable list of the enabled and disabled thread start requests. This list is a live view of these requests and thus changes as requests are added and deleted.
      Returns:
      the all ThreadStartRequest objects.
    • threadDeathRequests

      List<ThreadDeathRequest> threadDeathRequests()
      Return an unmodifiable list of the enabled and disabled thread death requests. This list is a live view of these requests and thus changes as requests are added and deleted.
      Returns:
      the all ThreadDeathRequest objects.
    • exceptionRequests

      List<ExceptionRequest> exceptionRequests()
      Return an unmodifiable list of the enabled and disabled exception requests. This list is a live view of these requests and thus changes as requests are added and deleted.
      Returns:
      the all ExceptionRequest objects.
    • breakpointRequests

      List<BreakpointRequest> breakpointRequests()
      Return an unmodifiable list of the enabled and disabled breakpoint requests. This list is a live view of these requests and thus changes as requests are added and deleted.
      Returns:
      the list of all BreakpointRequest objects.
    • accessWatchpointRequests

      List<AccessWatchpointRequest> accessWatchpointRequests()
      Return an unmodifiable list of the enabled and disabled access watchpoint requests. This list is a live view of these requests and thus changes as requests are added and deleted.
      Returns:
      the all AccessWatchpointRequest objects.
    • modificationWatchpointRequests

      List<ModificationWatchpointRequest> modificationWatchpointRequests()
      Return an unmodifiable list of the enabled and disabled modification watchpoint requests. This list is a live view of these requests and thus changes as requests are added and deleted.
      Returns:
      the all ModificationWatchpointRequest objects.
    • methodEntryRequests

      List<MethodEntryRequest> methodEntryRequests()
      Return an unmodifiable list of the enabled and disabled method entry requests. This list is a live view of these requests and thus changes as requests are added and deleted.
      Returns:
      the list of all MethodEntryRequest objects.
    • methodExitRequests

      List<MethodExitRequest> methodExitRequests()
      Return an unmodifiable list of the enabled and disabled method exit requests. This list is a live view of these requests and thus changes as requests are added and deleted.
      Returns:
      the list of all MethodExitRequest objects.
    • monitorContendedEnterRequests

      List<MonitorContendedEnterRequest> monitorContendedEnterRequests()
      Return an unmodifiable list of the enabled and disabled monitor contended enter requests. This list is a live view of these requests and thus changes as requests are added and deleted.
      Returns:
      the list of all MonitorContendedEnterRequest objects.
      Since:
      1.6
    • monitorContendedEnteredRequests

      List<MonitorContendedEnteredRequest> monitorContendedEnteredRequests()
      Return an unmodifiable list of the enabled and disabled monitor contended entered requests. This list is a live view of these requests and thus changes as requests are added and deleted.
      Returns:
      the list of all MonitorContendedEnteredRequest objects.
      Since:
      1.6
    • monitorWaitRequests

      List<MonitorWaitRequest> monitorWaitRequests()
      Return an unmodifiable list of the enabled and disabled monitor wait requests. This list is a live view of these requests and thus changes as requests are added and deleted.
      Returns:
      the list of all MonitorWaitRequest objects.
      Since:
      1.6
    • monitorWaitedRequests

      List<MonitorWaitedRequest> monitorWaitedRequests()
      Return an unmodifiable list of the enabled and disabled monitor waited requests. This list is a live view of these requests and thus changes as requests are added and deleted.
      Returns:
      the list of all MonitorWaitedRequest objects.
      Since:
      1.6
    • vmDeathRequests

      List<VMDeathRequest> vmDeathRequests()
      Return an unmodifiable list of the enabled and disabled VM death requests. This list is a live view of these requests and thus changes as requests are added and deleted. Note: the unsolicited VMDeathEvent does not have a corresponding request.
      Returns:
      the list of all VMDeathRequest objects.
      Since:
      1.4