Class JdiDefaultExecutionControl

java.lang.Object

jdk.jshell.execution.StreamingExecutionControl

jdk.jshell.execution.JdiExecutionControl

jdk.jshell.execution.JdiDefaultExecutionControl

All Implemented Interfaces:

AutoCloseable, ExecutionControl

public class JdiDefaultExecutionControl
extends JdiExecutionControl

The implementation of ExecutionControl that the JShell-core uses by default. Launches a remote process -- the "remote agent". Interfaces to the remote agent over a socket and via JDI. Designed to work with RemoteExecutionControl.

Since:

9

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	JdiDefaultExecutionControl.JdiStarter	Start an external process where the user's snippets can be run.

Nested classes/interfaces declared in interface ExecutionControl

ExecutionControl.ClassBytecodes, ExecutionControl.ClassInstallException, ExecutionControl.EngineTerminationException, ExecutionControl.ExecutionControlException, ExecutionControl.InternalException, ExecutionControl.NotImplementedException, ExecutionControl.ResolutionException, ExecutionControl.RunException, ExecutionControl.StoppedException, ExecutionControl.UserException

Method Summary

Modifier and Type	Method	Description
void	close()	Closes the execution engine.
String	invoke(String classname, String methodname)	Invokes an executable Snippet by calling a method on the specified wrapper class.
void	stop()	Interrupts a running remote invoke by manipulating remote variables and sending a stop via JDI.
protected VirtualMachine	vm()	Returns the JDI VirtualMachine instance.

Methods declared in class JdiExecutionControl

redefine, referenceType

Methods declared in class StreamingExecutionControl

addToClasspath, close, extensionCommand, load, varValue

Methods declared in class Object

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

Methods declared in interface ExecutionControl

addToClasspath, extensionCommand, load, varValue

Method Details

invoke

public String invoke(String classname,
 String methodname)
              throws ExecutionControl.RunException,
ExecutionControl.EngineTerminationException,
ExecutionControl.InternalException

Description copied from interface: ExecutionControl

Invokes an executable Snippet by calling a method on the specified wrapper class. The method must have no arguments and return String.

Specified by:

invoke in interface ExecutionControl

Overrides:

invoke in class StreamingExecutionControl

Parameters:

classname - the class whose method should be invoked

methodname - the name of method to invoke

Returns:

the result of the execution or null if no result

Throws:

ExecutionControl.UserException - the invoke raised a user exception

ExecutionControl.ResolutionException - the invoke attempted to directly or indirectly invoke an unresolved snippet

ExecutionControl.StoppedException - if the invoke() was canceled by ExecutionControl.stop()

ExecutionControl.EngineTerminationException - the execution engine has terminated

ExecutionControl.InternalException - an internal problem occurred

ExecutionControl.RunException

stop

public void stop()
          throws ExecutionControl.EngineTerminationException,
ExecutionControl.InternalException

Interrupts a running remote invoke by manipulating remote variables and sending a stop via JDI.

Throws:

ExecutionControl.EngineTerminationException - the execution engine has terminated

ExecutionControl.InternalException - an internal problem occurred

close

public void close()

Description copied from class: StreamingExecutionControl

Closes the execution engine. Send an exit command to the remote agent.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface ExecutionControl

Overrides:

close in class StreamingExecutionControl

vm

protected VirtualMachine vm()
                     throws ExecutionControl.EngineTerminationException

Description copied from class: JdiExecutionControl

Returns the JDI VirtualMachine instance.

Specified by:

vm in class JdiExecutionControl

Returns:

the virtual machine

Throws:

ExecutionControl.EngineTerminationException - if the VM is dead/disconnected