org.spf4j.zel.vm

Class ExecutionContext

java.lang.Object

org.spf4j.zel.vm.ExecutionContext

@ParametersAreNonnullByDefault
public final class ExecutionContext
extends Object

Virtual Machine Execution Context

Author:

zoly

Field Summary

Fields

Modifier and Type	Field and Description
Program	code the program
PrintStream	err Standard Error Output
VMExecutor	execService
Object[]	globalMem
InputStream	in Standard Input
int	ip The Instruction pointer
MathContext	mathContext
Object[]	mem
PrintStream	out Standard Output
ResultCache	resultCache
boolean	terminated The halt register

Method Summary

Methods

Modifier and Type	Method and Description
VMExecutor.Suspendable<Object>	getCallable()
Object	getFromPtr(int ptr)
int	getNrStackVals()
ExecutionContext	getSubProgramContext(Program program, Object[] parameters)
ExecutionContext	getSyncSubProgramContext(Program program, Object[] parameters)
boolean	isChildContext()
boolean	isStackEmpty()
Object	peek()
Object	peekElemAfter(Object elem)
Object	peekFromTop(int n)
Object	pop()
Object	popFirstAvail(int nr)
Object	popStackVal()
Object[]	popStackVals(int nvals)
Object	popSyncStackVal() pops object out of stack
Object[]	popSyncStackVals(int nvals)
void	popSyncStackVals(Object[] vals)
void	push(Object obj)
void	pushAll(Object[] objects)
void	suspend(List<VMFuture<Object>> futures)
void	suspend(VMFuture<Object> future)
void	syncStackVal()
void	syncStackVals()
String	toString()
Object[]	tuple()

Methods inherited from class java.lang.Object

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

Field Detail

mathContext

public MathContext mathContext

execService

public final VMExecutor execService

resultCache

public final ResultCache resultCache

mem

public final Object[] mem

globalMem

public final Object[] globalMem

code

public final Program code

the program

ip

public int ip

The Instruction pointer

terminated

public boolean terminated

The halt register

in

public final transient InputStream in

Standard Input

out

public final transient PrintStream out

Standard Output

err

public final transient PrintStream err

Standard Error Output

Method Detail

suspend

public void suspend(VMFuture<Object> future)
             throws SuspendedException

Throws:

SuspendedException

suspend

public void suspend(List<VMFuture<Object>> futures)
             throws SuspendedException

Throws:

SuspendedException

getCallable

public VMExecutor.Suspendable<Object> getCallable()

popSyncStackVal

public Object popSyncStackVal()
                       throws SuspendedException,
                              ExecutionException

pops object out of stack

Returns:

Object

Throws:

SuspendedException

ExecutionException

syncStackVal

public void syncStackVal()
                  throws SuspendedException,
                         ExecutionException

Throws:

SuspendedException

ExecutionException

syncStackVals

public void syncStackVals()
                   throws SuspendedException,
                          ExecutionException

Throws:

SuspendedException

ExecutionException

popStackVals

public Object[] popStackVals(int nvals)

popStackVal

public Object popStackVal()

getNrStackVals

public int getNrStackVals()

popSyncStackVals

public Object[] popSyncStackVals(int nvals)
                          throws SuspendedException,
                                 ExecutionException

Throws:

SuspendedException

ExecutionException

tuple

public Object[] tuple()

popSyncStackVals

public void popSyncStackVals(Object[] vals)
                      throws SuspendedException,
                             ExecutionException

Throws:

SuspendedException

ExecutionException

popFirstAvail

public Object popFirstAvail(int nr)
                     throws SuspendedException

Throws:

SuspendedException

pop

public Object pop()

push

public void push(@Nullable
        Object obj)

pushAll

public void pushAll(Object[] objects)

isStackEmpty

public boolean isStackEmpty()

peek

public Object peek()

peekFromTop

public Object peekFromTop(int n)

peekElemAfter

public Object peekElemAfter(Object elem)

getFromPtr

public Object getFromPtr(int ptr)

getSubProgramContext

public ExecutionContext getSubProgramContext(Program program,
                                    Object[] parameters)

getSyncSubProgramContext

public ExecutionContext getSyncSubProgramContext(Program program,
                                        Object[] parameters)

toString

public String toString()

Overrides:

toString in class Object

isChildContext

public boolean isChildContext()