@Override
public Size apply(
MethodVisitor methodVisitor,
Context implementationContext,
MethodDescription instrumentedMethod) {
StackManipulation thisReference = MethodVariableAccess.REFERENCE.loadOffset(0);
FieldList<?> fieldList = instrumentedType.getDeclaredFields();
StackManipulation[] fieldLoading = new StackManipulation[fieldList.size()];
int index = 0;
for (FieldDescription fieldDescription : fieldList) {
fieldLoading[index] =
new StackManipulation.Compound(
thisReference,
MethodVariableAccess.forType(fieldDescription.getType().asErasure())
.loadOffset(instrumentedMethod.getParameters().get(index).getOffset()),
FieldAccess.forField(fieldDescription).putter());
index++;
}
StackManipulation.Size stackSize =
new StackManipulation.Compound(
thisReference,
MethodInvocation.invoke(ConstructorCall.INSTANCE.objectTypeDefaultConstructor),
new StackManipulation.Compound(fieldLoading),
MethodReturn.VOID)
.apply(methodVisitor, implementationContext);
return new Size(stackSize.getMaximalSize(), instrumentedMethod.getStackSize());
}
@Override
public Size apply(
MethodVisitor methodVisitor,
Context implementationContext,
MethodDescription instrumentedMethod) {
StackManipulation thisReference =
MethodVariableAccess.forType(instrumentedType).loadOffset(0);
FieldList<?> fieldList = instrumentedType.getDeclaredFields();
StackManipulation[] fieldLoading = new StackManipulation[fieldList.size()];
int index = 0;
for (FieldDescription fieldDescription : fieldList) {
fieldLoading[index++] =
new StackManipulation.Compound(
thisReference, FieldAccess.forField(fieldDescription).getter());
}
StackManipulation.Size stackSize =
new StackManipulation.Compound(
new StackManipulation.Compound(fieldLoading),
MethodInvocation.invoke(accessorMethod),
assigner.assign(
accessorMethod.getReturnType().asErasure(),
instrumentedMethod.getReturnType().asErasure(),
Assigner.Typing.DYNAMIC),
MethodReturn.returning(instrumentedMethod.getReturnType().asErasure()))
.apply(methodVisitor, implementationContext);
return new Size(stackSize.getMaximalSize(), instrumentedMethod.getStackSize());
}
private void buildCopyStack(
List<StackManipulation> stack,
int iterations,
Method getMethod,
Method putMethod,
long stride)
throws NoSuchFieldException, NoSuchMethodException {
final Field unsafeField = UnsafeCopier.class.getDeclaredField("unsafe");
final StackManipulation copyStack =
new StackManipulation.Compound(
// unsafe.putLong(dest, destOffset, unsafe.getLong(src));
MethodVariableAccess.REFERENCE.loadOffset(0), // ALOAD 0 this
FieldAccess.forField(new FieldDescription.ForLoadedField(unsafeField))
.getter(), // GETFIELD
MethodVariableAccess.REFERENCE.loadOffset(1), // ALOAD 1 dest
MethodVariableAccess.LONG.loadOffset(4), // LLOAD 4 destOffset
MethodVariableAccess.REFERENCE.loadOffset(0), // ALOAD 0 this
FieldAccess.forField(new FieldDescription.ForLoadedField(unsafeField))
.getter(), // GETFIELD
MethodVariableAccess.LONG.loadOffset(2), // LLOAD 2 src
MethodInvocation.invoke(new MethodDescription.ForLoadedMethod(getMethod)),
MethodInvocation.invoke(new MethodDescription.ForLoadedMethod(putMethod)));
final StackManipulation incrementStack =
new StackManipulation.Compound(
// destOffset += 8; src += 8;
MethodVariableAccess.LONG.loadOffset(4), // LLOAD 4 destOffset
LongConstant.forValue(stride), // LDC 8 strideWidth
LongAdd.INSTANCE, // LADD
MethodVariableStore.LONG.storeOffset(4), // LSTORE 4
MethodVariableAccess.LONG.loadOffset(2), // LLOAD 2 src
LongConstant.forValue(stride), // LDC 8 strideWidth
LongAdd.INSTANCE, // LADD
MethodVariableStore.LONG.storeOffset(2) // LSTORE 2
);
for (int i = 0; i < iterations; i++) {
stack.add(copyStack);
stack.add(incrementStack);
}
}
@Override
public Size apply(MethodVisitor methodVisitor, Implementation.Context implementationContext) {
TypeDescription auxiliaryType =
implementationContext.register(
new MethodCallProxy(specialMethodInvocation, serializable));
return new Compound(
TypeCreation.forType(auxiliaryType),
Duplication.SINGLE,
MethodVariableAccess.allArgumentsOf(specialMethodInvocation.getMethodDescription())
.prependThisReference(),
MethodInvocation.invoke(
auxiliaryType.getDeclaredMethods().filter(isConstructor()).getOnly()))
.apply(methodVisitor, implementationContext);
}
