gov.nasa.jpf.jvm.bytecode

Class INVOKESPECIAL

java.lang.Object

gov.nasa.jpf.vm.Instruction

gov.nasa.jpf.vm.bytecode.InvokeInstruction

gov.nasa.jpf.jvm.bytecode.JVMInvokeInstruction

gov.nasa.jpf.jvm.bytecode.InstanceInvocation

gov.nasa.jpf.jvm.bytecode.INVOKESPECIAL

All Implemented Interfaces:

JVMInstruction, Attributable, InstanceInvokeInstruction, InstructionInterface, java.lang.Cloneable

public class INVOKESPECIAL
extends InstanceInvocation

Invoke instance method; special handling for superclass, private, and instance initialization method invocations ..., objectref, [arg1, [arg2 ...]] => ... invokedMethod is supposed to be constant (ClassInfo can't change)

Field Summary

Fields inherited from class gov.nasa.jpf.jvm.bytecode.JVMInvokeInstruction

argSize, arguments, cname, invokedMethod, lastObj, mname, signature

Fields inherited from class gov.nasa.jpf.vm.Instruction

attr, insnIndex, mi, position

Constructor Summary

Constructors

Constructor and Description
INVOKESPECIAL(java.lang.String clsDescriptor, java.lang.String methodName, java.lang.String signature)

Method Summary

Modifier and Type	Method and Description
void	accept(JVMInstructionVisitor insVisitor)
Instruction	execute(ThreadInfo ti) this is the real workhorse returns next instruction to enter in this thread <2do> it's unfortunate we roll every side effect into this method, because it diminishes the value of the 'executeInstruction' notification: all insns that require some sort of late binding (InvokeVirtual, GetField, ..) are not yet fully analyzable (e.g.
int	getByteCode()
java.lang.Object	getFieldValue(java.lang.String id, ThreadInfo ti)
MethodInfo	getInvokedMethod(ThreadInfo th) we can do some more caching here - the MethodInfo should be const
protected boolean	isLastUnlock(ElementInfo ei) If the object will still be owned, then the current thread can go on.
protected boolean	isLockOwner(ThreadInfo ti, ElementInfo ei) If the current thread already owns the lock, then the current thread can go on.
java.lang.String	toString()

Methods inherited from class gov.nasa.jpf.jvm.bytecode.InstanceInvocation

getArgSize, getCalleeThis, getObjectSlot, getThisElementInfo

Methods inherited from class gov.nasa.jpf.jvm.bytecode.JVMInvokeInstruction

getArgumentAttrs, getArgumentValue, getArgumentValues, getFieldOrArgumentValue, getInvokedMethod, getInvokedMethodClassName, getInvokedMethodName, getInvokedMethodSignature, getLastObjRef, getLength, getReturnType, getReturnTypeName, hasArgumentAttr, hasArgumentObjectAttr, isCompleted, isReferenceReturnType, setInvokedMethod, setupCallee, typeSafeClone

Methods inherited from class gov.nasa.jpf.vm.bytecode.InvokeInstruction

reschedulesLockAcquisition

Methods inherited from class gov.nasa.jpf.vm.Instruction

addAttr, asInstruction, attrIterator, attrIterator, cleanupTransients, getAttr, getAttr, getFileLocation, getFilePos, getInstructionIndex, getLineNumber, getMethodInfo, getMnemonic, getNext, getNext, getNextAttr, getPosition, getPrev, getSourceLine, getSourceLocation, getSourceOrLocation, hasAttr, hasAttr, init, isBackJump, isExtendedInstruction, isFirstInstruction, isMonitorEnterPrologue, isSchedulingRelevant, removeAttr, replaceAttr, requiresClinitExecution, setAttr, setContext, setLocation, setMethodInfo, toPostExecString

Methods inherited from class java.lang.Object

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

Methods inherited from interface gov.nasa.jpf.vm.bytecode.InstanceInvokeInstruction

getInvokedMethod

Methods inherited from interface gov.nasa.jpf.vm.bytecode.InstructionInterface

asInstruction, getFileLocation, getFilePos, getInstructionIndex, getLength, getLineNumber, getMethodInfo, getMnemonic, getNext, getNext, getPosition, getPrev, getSourceLine, getSourceLocation, isBackJump, isCompleted, isExtendedInstruction, isFirstInstruction, toPostExecString

Methods inherited from interface gov.nasa.jpf.util.Attributable

addAttr, attrIterator, attrIterator, getAttr, getAttr, getNextAttr, hasAttr, hasAttr, removeAttr, replaceAttr, setAttr

Constructor Detail

INVOKESPECIAL

public INVOKESPECIAL(java.lang.String clsDescriptor,
                     java.lang.String methodName,
                     java.lang.String signature)

Method Detail

getByteCode

public int getByteCode()

execute

public Instruction execute(ThreadInfo ti)

Description copied from class: Instruction

this is the real workhorse returns next instruction to enter in this thread <2do> it's unfortunate we roll every side effect into this method, because it diminishes the value of the 'executeInstruction' notification: all insns that require some sort of late binding (InvokeVirtual, GetField, ..) are not yet fully analyzable (e.g. the callee of InvokeVirtuals is not known yet), putting the burden of duplicating the related code of enter() in the listener. It would be better if we factor this 'prepareExecution' out of enter()

Specified by:

execute in interface InstructionInterface

Specified by:

execute in class Instruction

isLockOwner

protected boolean isLockOwner(ThreadInfo ti,
                              ElementInfo ei)

If the current thread already owns the lock, then the current thread can go on. For example, this is a recursive acquisition.

isLastUnlock

protected boolean isLastUnlock(ElementInfo ei)

If the object will still be owned, then the current thread can go on. For example, all but the last monitorexit for the object.

getInvokedMethod

public MethodInfo getInvokedMethod(ThreadInfo th)

we can do some more caching here - the MethodInfo should be const

Specified by:

getInvokedMethod in class JVMInvokeInstruction

toString

public java.lang.String toString()

Overrides:

toString in class Instruction

getFieldValue

public java.lang.Object getFieldValue(java.lang.String id,
                                      ThreadInfo ti)

Specified by:

getFieldValue in class JVMInvokeInstruction

accept

public void accept(JVMInstructionVisitor insVisitor)

Specified by:

accept in interface JVMInstruction

Overrides:

accept in class InstanceInvocation