@Override
public long getMemorySize(Constant constant) {
if (constant.getKind() == Kind.Object) {
HotSpotResolvedObjectType lookupJavaType =
(HotSpotResolvedObjectType) this.lookupJavaType(constant);
if (lookupJavaType == null) {
return 0;
} else {
if (lookupJavaType.isArray()) {
// TODO(tw): Add compressed pointer support.
int length = Array.getLength(HotSpotObjectConstant.asObject(constant));
ResolvedJavaType elementType = lookupJavaType.getComponentType();
Kind elementKind = elementType.getKind();
final int headerSize = HotSpotGraalRuntime.getArrayBaseOffset(elementKind);
int sizeOfElement = HotSpotGraalRuntime.runtime().getTarget().getSizeInBytes(elementKind);
int alignment = HotSpotGraalRuntime.runtime().getTarget().wordSize;
int log2ElementSize = CodeUtil.log2(sizeOfElement);
return NewObjectSnippets.computeArrayAllocationSize(
length, alignment, headerSize, log2ElementSize);
}
return lookupJavaType.instanceSize();
}
} else {
return constant.getKind().getByteCount();
}
}
public ResolvedJavaType lookupJavaType(Constant constant) {
if (constant.isNull() || !(constant instanceof HotSpotObjectConstant)) {
return null;
}
Object o = HotSpotObjectConstant.asObject(constant);
return HotSpotResolvedObjectType.fromClass(o.getClass());
}
public ResolvedJavaField lookupJavaField(Field reflectionField) {
String name = reflectionField.getName();
Class<?> fieldHolder = reflectionField.getDeclaringClass();
Class<?> fieldType = reflectionField.getType();
// java.lang.reflect.Field's modifiers should be enough here since VM internal modifier bits
// are not used (yet).
final int modifiers = reflectionField.getModifiers();
final long offset =
Modifier.isStatic(modifiers)
? unsafe.staticFieldOffset(reflectionField)
: unsafe.objectFieldOffset(reflectionField);
ResolvedJavaType holder = HotSpotResolvedObjectType.fromClass(fieldHolder);
ResolvedJavaType type = HotSpotResolvedObjectType.fromClass(fieldType);
if (offset != -1) {
HotSpotResolvedObjectType resolved = (HotSpotResolvedObjectType) holder;
return resolved.createField(name, type, offset, modifiers);
} else {
throw GraalInternalError.shouldNotReachHere("unresolved field " + reflectionField);
}
}
public ResolvedJavaType lookupJavaType(Class<?> clazz) {
if (clazz == null) {
throw new IllegalArgumentException("Class parameter was null");
}
return HotSpotResolvedObjectType.fromClass(clazz);
}