graal-compiler: graal/com.oracle.truffle.object/src/com/oracle/truffle/object/ShapeImpl.java comparison

comparison graal/com.oracle.truffle.object/src/com/oracle/truffle/object/ShapeImpl.java @ 18408:2c3666f44855

Truffle: initial commit of object API implementation

author	Andreas Woess <andreas.woess@jku.at>
date	Tue, 18 Nov 2014 23:19:43 +0100
parents
children	b3b241bbbbdb

comparison

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-:f439fdb137a3
+:2c3666f44855
+/*
+* Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
+* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+*
+* This code is free software; you can redistribute it and/or modify it
+* under the terms of the GNU General Public License version 2 only, as
+* published by the Free Software Foundation.
+*
+* This code is distributed in the hope that it will be useful, but WITHOUT
+* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+* version 2 for more details (a copy is included in the LICENSE file that
+* accompanied this code).
+*
+* You should have received a copy of the GNU General Public License version
+* 2 along with this work; if not, write to the Free Software Foundation,
+* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+*
+* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+* or visit www.oracle.com if you need additional information or have any
+* questions.
+*/
+package com.oracle.truffle.object;
+import java.util.*;
+import com.oracle.truffle.api.*;
+import com.oracle.truffle.api.CompilerDirectives.CompilationFinal;
+import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
+import com.oracle.truffle.api.nodes.*;
+import com.oracle.truffle.api.object.*;
+import com.oracle.truffle.object.LocationImpl.InternalLongLocation;
+import com.oracle.truffle.object.Locations.ConstantLocation;
+import com.oracle.truffle.object.Locations.DeclaredDualLocation;
+import com.oracle.truffle.object.Locations.DeclaredLocation;
+import com.oracle.truffle.object.Locations.DualLocation;
+import com.oracle.truffle.object.Locations.ValueLocation;
+import com.oracle.truffle.object.Transition.AddTransition;
+import com.oracle.truffle.object.Transition.OperationsTransition;
+import com.oracle.truffle.object.Transition.PropertyTransition;
+import com.oracle.truffle.object.Transition.RemoveTransition;
+/**
+* Shape objects create a mapping of Property objects to indexes. The mapping of those indexes to an
+* actual store is not part of Shape's role, but JSObject's. Shapes are immutable; adding or
+* deleting a property yields a new Shape which links to the old one. This allows inline caching to
+* simply check the identity of an object's Shape to determine if the cache is valid. There is one
+* exception to this immutability, the transition map, but that is used simply to assure that an
+* identical series of property additions and deletions will yield the same Shape object.
+*
+* @see DynamicObject
+* @see Property
+* @see Locations
+*/
+public abstract class ShapeImpl extends Shape {
+private final int id;
+protected final LayoutImpl layout;
+protected final ObjectType objectType;
+protected final ShapeImpl parent;
+protected final PropertyMap propertyMap;
+private final Object extraData;
+private final Object sharedData;
+private final ShapeImpl root;
+protected final int objectArraySize;
+protected final int objectArrayCapacity;
+protected final int objectFieldSize;
+protected final int primitiveFieldSize;
+protected final int primitiveArraySize;
+protected final int primitiveArrayCapacity;
+protected final boolean hasPrimitiveArray;
+protected final int depth;
+protected final int propertyCount;
+protected Property[] propertyArray;
+protected final Assumption validAssumption;
+protected final Assumption leafAssumption;
+/**
+* Shape transition map; lazily initialized.
+*
+* @see #getTransitionMapForRead()
+* @see #getTransitionMapForWrite()
+*/
+private HashMap<Transition, ShapeImpl> transitionMap;
+/**
+* Private constructor.
+*
+* @see #ShapeImpl(Layout, ShapeImpl, ObjectType, Object, PropertyMap, BaseAllocator, int)
+*/
+private ShapeImpl(Layout layout, ShapeImpl parent, ObjectType operations, Object sharedData, PropertyMap propertyMap, int objectArraySize, int objectFieldSize, int primitiveFieldSize,
+int primitiveArraySize, boolean hasPrimitiveArray, int id) {
+this.layout = (LayoutImpl) layout;
+this.objectType = Objects.requireNonNull(operations);
+this.propertyMap = Objects.requireNonNull(propertyMap);
+this.root = parent != null ? parent.getRoot() : this;
+this.parent = parent;
+this.objectArraySize = objectArraySize;
+this.objectArrayCapacity = capacityFromSize(objectArraySize);
+this.objectFieldSize = objectFieldSize;
+this.primitiveFieldSize = primitiveFieldSize;
+this.primitiveArraySize = primitiveArraySize;
+this.primitiveArrayCapacity = capacityFromSize(primitiveArraySize);
+this.hasPrimitiveArray = hasPrimitiveArray;
+if (parent != null) {
+this.propertyCount = makePropertyCount(parent, propertyMap);
+this.propertyArray = makePropertiesList(parent, propertyMap);
+this.depth = parent.depth + 1;
+} else {
+this.propertyCount = 0;
+this.propertyArray = null;
+this.depth = 0;
+}
+this.validAssumption = createValidAssumption();
+this.leafAssumption = createLeafAssumption();
+this.id = id;
+shapeCount.inc();
+this.sharedData = sharedData;
+this.extraData = operations.createShapeData(this);
+debugRegisterShape(this);
+}
+protected ShapeImpl(Layout layout, ShapeImpl parent, ObjectType operations, Object sharedData, PropertyMap propertyMap, Allocator allocator, int id) {
+this(layout, parent, operations, sharedData, propertyMap, ((BaseAllocator) allocator).objectArraySize, ((BaseAllocator) allocator).objectFieldSize,
+((BaseAllocator) allocator).primitiveFieldSize, ((BaseAllocator) allocator).primitiveArraySize, ((BaseAllocator) allocator).hasPrimitiveArray, id);
+}
+@SuppressWarnings("hiding")
+protected abstract ShapeImpl createShape(Layout layout, Object sharedData, ShapeImpl parent, ObjectType operations, PropertyMap propertyMap, Allocator allocator, int id);
+protected ShapeImpl(Layout layout, ObjectType operations, Object sharedData, int id) {
+this(layout, null, operations, sharedData, PropertyMap.empty(), layout.createAllocator(), id);
+}
+private static int makePropertyCount(ShapeImpl parent, PropertyMap propertyMap) {
+return parent.propertyCount + ((propertyMap.size() > parent.propertyMap.size() && !propertyMap.getLastProperty().isHidden() && !propertyMap.getLastProperty().isShadow()) ? 1 : 0);
+}
+private static Property[] makePropertiesList(ShapeImpl parent, PropertyMap propertyMap) {
+Property[] properties = parent.propertyArray;
+if (properties != null && propertyMap.size() != parent.propertyMap.size()) {
+Property lastProperty = propertyMap.getLastProperty();
+if (lastProperty != null && !lastProperty.isHidden()) {
+propertyListAllocCount.inc();
+if (!lastProperty.isShadow()) {
+properties = Arrays.copyOf(properties, properties.length + 1);
+properties[properties.length - 1] = lastProperty;
+} else {
+properties = Arrays.copyOf(properties, properties.length);
+for (int i = 0; i < properties.length; i++) {
+if (properties[i].isSame(lastProperty)) {
+properties[i] = lastProperty;
+}
+}
+}
+} else {
+propertyListShareCount.inc();
+}
+}
+return properties;
+}
+@Override
+public final Property getLastProperty() {
+return propertyMap.getLastProperty();
+}
+@Override
+public final int getId() {
+return this.id;
+}
+/**
+* Calculate array size for the given number of elements.
+*/
+private static int capacityFromSize(int size) {
+if (size == 0) {
+return 0;
+} else if (size < 4) {
+return 4;
+} else if (size < 32) {
+return ((size + 7) / 8) * 8;
+} else {
+return ((size + 15) / 16) * 16;
+}
+}
+@Override
+public final int getObjectArraySize() {
+return objectArraySize;
+}
+@Override
+public final int getObjectFieldSize() {
+return objectFieldSize;
+}
+@Override
+public final int getPrimitiveFieldSize() {
+return primitiveFieldSize;
+}
+@Override
+public final int getObjectArrayCapacity() {
+return objectArrayCapacity;
+}
+@Override
+public final int getPrimitiveArrayCapacity() {
+return primitiveArrayCapacity;
+}
+@Override
+public final int getPrimitiveArraySize() {
+return primitiveArraySize;
+}
+@Override
+public final boolean hasPrimitiveArray() {
+return hasPrimitiveArray;
+}
+/**
+* Get the (parent) shape that holds the given property.
+*/
+public final ShapeImpl getShapeFromProperty(Object propertyName) {
+ShapeImpl current = this;
+while (current != getRoot()) {
+if (current.getLastProperty().getKey().equals(propertyName)) {
+return current;
+}
+current = current.getParent();
+}
+return null;
+}
+/**
+* Get the (parent) shape that holds the given property.
+*/
+public final ShapeImpl getShapeFromProperty(Property prop) {
+ShapeImpl current = this;
+while (current != getRoot()) {
+if (current.getLastProperty().equals(prop)) {
+return current;
+}
+current = current.parent;
+}
+return null;
+}
+/**
+* Get a property entry by string name.
+*
+* @param key the name to look up
+* @return a Property object, or null if not found
+*/
+@Override
+@TruffleBoundary
+public final Property getProperty(Object key) {
+// return this.propertyMap.get(propertyName);
+PropertyMap current = this.propertyMap;
+while (current.getLastProperty() != null) {
+if (current.getLastProperty().getKey().equals(key)) {
+return current.getLastProperty();
+}
+current = current.getParentMap();
+}
+return null;
+}
+protected final void addTransition(Transition transition, ShapeImpl next) {
+assert next.getParent() == this;
+addTransitionInternal(transition, next);
+}
+public final void addNonlinearTransition(Transition transition, ShapeImpl next) {
+assert next.getParent() != this;
+addTransitionInternal(transition, next);
+}
+private void addTransitionInternal(Transition transition, ShapeImpl next) {
+getTransitionMapForWrite().put(transition, next);
+}
+public final Map<Transition, ShapeImpl> getTransitionMapForRead() {
+return transitionMap != null ? transitionMap : Collections.<Transition, ShapeImpl> emptyMap();
+}
+private Map<Transition, ShapeImpl> getTransitionMapForWrite() {
+if (transitionMap != null) {
+return transitionMap;
+} else {
+invalidateLeafAssumption();
+return transitionMap = new HashMap<>();
+}
+}
+public final PropertyMap getPropertyMap() {
+return propertyMap;
+}
+/**
+* Add a new property in the map, yielding a new or cached Shape object.
+*
+* @param property the property to add
+* @return the new Shape
+*/
+@TruffleBoundary
+@Override
+public ShapeImpl addProperty(Property property) {
+assert isValid();
+ShapeImpl nextShape = addPropertyInternal(property);
+objectType.onPropertyAdded(property, this, nextShape);
+return nextShape;
+}
+/**
+* Add a new property in the map, yielding a new or cached Shape object.
+*
+* In contrast to {@link ShapeImpl#addProperty(Property)}, this method does not care about
+* obsolete shapes.
+*
+* @see #addProperty(Property)
+*/
+private ShapeImpl addPropertyInternal(Property prop) {
+CompilerAsserts.neverPartOfCompilation();
+assert prop.isShadow() || !(this.hasProperty(prop.getKey())) : "duplicate property";
+assert !getPropertyListInternal(false).contains(prop);
+// invalidatePropertyAssumption(prop.getName());
+Transition.AddTransition key = new Transition.AddTransition(prop);
+Map<Transition, ShapeImpl> transitionMapForRead = this.getTransitionMapForRead();
+ShapeImpl cachedShape = transitionMapForRead.get(key);
+if (cachedShape != null) { // Shape already exists?
+shapeCacheHitCount.inc();
+return (ShapeImpl) layout.getStrategy().returnCached(cachedShape);
+}
+shapeCacheMissCount.inc();
+ShapeImpl oldShape = (ShapeImpl) layout.getStrategy().ensureSpace(this, prop.getLocation());
+ShapeImpl newShape = makeShapeWithAddedProperty(oldShape, key);
+oldShape.addTransition(key, newShape);
+return newShape;
+}
+protected ShapeImpl cloneRoot(ShapeImpl from, Object newSharedData) {
+return createShape(from.layout, newSharedData, null, from.objectType, from.propertyMap, from.allocator(), from.id);
+}
+/**
+* Create a separate clone of a shape.
+*
+* @param newParent the cloned parent shape
+*/
+protected final ShapeImpl cloneOnto(ShapeImpl newParent) {
+ShapeImpl from = this;
+ShapeImpl newShape = createShape(newParent.layout, newParent.sharedData, newParent, from.objectType, from.propertyMap, from.allocator(), newParent.id);
+shapeCloneCount.inc();
+// (aw) need to have this transition for obsolescence
+newParent.addTransition(getTransitionFromParent(), newShape);
+return newShape;
+}
+private Transition getTransitionFromParent() {
+for (Map.Entry<Transition, ShapeImpl> property : parent.getTransitionMapForRead().entrySet()) {
+if (property.getValue() == this) {
+return property.getKey();
+}
+}
+throw new NoSuchElementException();
+}
+/**
+* Create a new shape that adds a property to the parent shape.
+*/
+private static ShapeImpl makeShapeWithAddedProperty(ShapeImpl parent, AddTransition addTransition) {
+Property addend = addTransition.getProperty();
+BaseAllocator allocator = parent.allocator().addLocation(addend.getLocation());
+PropertyMap newPropertyMap = parent.propertyMap.putCopy(addend);
+ShapeImpl newShape = parent.createShape(parent.layout, parent.sharedData, parent, parent.objectType, newPropertyMap, allocator, parent.id);
+assert ((LocationImpl) addend.getLocation()).primitiveArrayCount() == 0 || newShape.hasPrimitiveArray;
+assert newShape.depth == allocator.depth;
+return newShape;
+}
+/**
+* Create a new shape that reserves the primitive extension array field.
+*/
+private static ShapeImpl makeShapeWithPrimitiveExtensionArray(ShapeImpl parent) {
+assert parent.getLayout().hasPrimitiveExtensionArray();
+assert !parent.hasPrimitiveArray();
+BaseAllocator allocator = parent.allocator().addLocation(parent.getLayout().getPrimitiveArrayLocation());
+ShapeImpl newShape = parent.createShape(parent.layout, parent.sharedData, parent, parent.objectType, parent.propertyMap, allocator, parent.id);
+assert newShape.hasPrimitiveArray();
+assert newShape.depth == allocator.depth;
+return newShape;
+}
+private ShapeImpl addPrimitiveExtensionArray() {
+assert layout.hasPrimitiveExtensionArray() && !hasPrimitiveArray();
+Transition key = new Transition.ReservePrimitiveArrayTransition();
+ShapeImpl cachedShape = this.getTransitionMapForRead().get(key);
+if (cachedShape != null) {
+shapeCacheHitCount.inc();
+return (ShapeImpl) layout.getStrategy().returnCached(cachedShape);
+}
+shapeCacheMissCount.inc();
+ShapeImpl oldShape = (ShapeImpl) layout.getStrategy().ensureSpace(this, layout.getPrimitiveArrayLocation());
+ShapeImpl newShape = makeShapeWithPrimitiveExtensionArray(oldShape);
+oldShape.addTransition(key, newShape);
+return newShape;
+}
+/**
+* Are these two shapes related, i.e. do they have the same root?
+*
+* @param other Shape to compare to
+* @return true if one shape is an upcast of the other, or the Shapes are equal
+*/
+@Override
+public boolean isRelated(Shape other) {
+if (this == other) {
+return true;
+}
+if (this.getRoot() == getRoot()) {
+return true;
+}
+return false;
+}
+/**
+* Get a list of all properties that this Shape stores.
+*
+* @return list of properties
+*/
+@TruffleBoundary
+@Override
+public final List<Property> getPropertyList(Pred<Property> filter) {
+LinkedList<Property> props = new LinkedList<>();
+next: for (ShapeImpl current = this; current != getRoot(); current = current.parent) {
+Property currentProperty = current.getLastProperty();
+if (!currentProperty.isHidden() && filter.test(currentProperty)) {
+if (currentProperty.getLocation() instanceof DeclaredLocation) {
+for (Iterator<Property> iter = props.iterator(); iter.hasNext();) {
+Property other = iter.next();
+if (other.isShadow() && other.getKey().equals(currentProperty.getKey())) {
+iter.remove();
+props.addFirst(other);
+continue next;
+}
+}
+}
+props.addFirst(currentProperty);
+}
+}
+return props;
+}
+@Override
+public final List<Property> getPropertyList() {
+return getPropertyList(ALL);
+}
+/**
+* Returns all (also hidden) Property objects in this shape.
+*
+* @param ascending desired order
+*/
+@TruffleBoundary
+@Override
+public final List<Property> getPropertyListInternal(boolean ascending) {
+LinkedList<Property> props = new LinkedList<>();
+for (ShapeImpl current = this; current != getRoot(); current = current.parent) {
+if (ascending) {
+props.addFirst(current.getLastProperty());
+} else {
+props.add(current.getLastProperty());
+}
+}
+return props;
+}
+/**
+* Get a list of all (visible) property names in insertion order.
+*
+* @return list of property names
+*/
+@TruffleBoundary
+@Override
+public final List<Object> getKeyList(Pred<Property> filter) {
+LinkedList<Object> keys = new LinkedList<>();
+for (ShapeImpl current = this; current != getRoot(); current = current.parent) {
+Property currentProperty = current.getLastProperty();
+if (!currentProperty.isHidden() && filter.test(currentProperty) && !currentProperty.isShadow()) {
+keys.addFirst(currentProperty.getKey());
+}
+}
+return keys;
+}
+@Override
+public final List<Object> getKeyList() {
+return getKeyList(ALL);
+}
+@Override
+public Iterable<Object> getKeys() {
+return getKeyList();
+}
+public final void setTypeTransition(ShapeImpl successorShape, Property before, Property after) {
+getTransitionMapForWrite().put(new Transition.TypeTransition(before, after), successorShape);
+}
+private static Assumption createValidAssumption() {
+return Truffle.getRuntime().createAssumption("valid shape");
+}
+@Override
+public final Assumption getValidAssumption() {
+return validAssumption;
+}
+@Override
+public final boolean isValid() {
+return getValidAssumption().isValid();
+}
+private static Assumption createLeafAssumption() {
+return Truffle.getRuntime().createAssumption("leaf shape");
+}
+@Override
+public final Assumption getLeafAssumption() {
+return leafAssumption;
+}
+@Override
+public final boolean isLeaf() {
+return getLeafAssumption().isValid();
+}
+private void invalidateLeafAssumption() {
+getLeafAssumption().invalidate();
+}
+@Override
+public String toString() {
+return toStringLimit(Integer.MAX_VALUE);
+}
+@TruffleBoundary
+public String toStringLimit(int limit) {
+StringBuilder sb = new StringBuilder();
+sb.append('@');
+sb.append(Integer.toHexString(hashCode()));
+if (!isValid()) {
+sb.append('!');
+}
+sb.append("{");
+for (Iterator<Property> iterator = propertyMap.reverseOrderValues().iterator(); iterator.hasNext();) {
+Property p = iterator.next();
+sb.append(p);
+if (iterator.hasNext()) {
+sb.append(", ");
+}
+if (sb.length() >= limit) {
+sb.append("...");
+break;
+}
+sb.append("\n");
+}
+sb.append("}");
+return sb.toString();
+}
+@Override
+public final ShapeImpl getParent() {
+return parent;
+}
+public final int getDepth() {
+return depth;
+}
+@Override
+public final boolean hasProperty(Object name) {
+return getProperty(name) != null;
+}
+@TruffleBoundary
+@Override
+public final ShapeImpl removeProperty(Property prop) {
+RemoveTransition transition = new RemoveTransition(prop);
+ShapeImpl cachedShape = getTransitionMapForRead().get(transition);
+if (cachedShape != null) {
+return (ShapeImpl) layout.getStrategy().returnCached(cachedShape);
+}
+ShapeImpl shape = getShapeFromProperty(prop);
+if (shape != null) {
+List<Property> properties = new ArrayList<>();
+ShapeImpl current = this;
+while (current != shape) {
+properties.add(current.getLastProperty());
+current = current.parent;
+}
+ShapeImpl newShape = shape.parent;
+for (ListIterator<Property> iterator = properties.listIterator(properties.size()); iterator.hasPrevious();) {
+Property previous = iterator.previous();
+newShape = newShape.append(previous);
+}
+getTransitionMapForWrite().put(transition, newShape);
+return newShape;
+} else {
+return null;
+}
+}
+@TruffleBoundary
+@Override
+public final ShapeImpl append(Property oldProperty) {
+return addProperty(oldProperty.relocate(allocator().moveLocation(oldProperty.getLocation())));
+}
+@Override
+public final BaseAllocator allocator() {
+return layout.getStrategy().createAllocator(this);
+}
+/**
+* Duplicate shape exchanging existing property with new property.
+*/
+@Override
+public final ShapeImpl replaceProperty(Property oldProperty, Property newProp) {
+ShapeImpl top = this;
+List<Property> propertyList = new ArrayList<>();
+boolean found = false;
+while (top != getRoot() && !found) {
+Property prop = top.getLastProperty();
+propertyList.add(prop);
+if (prop.getKey().equals(newProp.getKey())) {
+found = true;
+}
+top = top.parent;
+}
+ShapeImpl newShape = top;
+for (ListIterator<Property> iterator = propertyList.listIterator(propertyList.size()); iterator.hasPrevious();) {
+Property prop = iterator.previous();
+if (prop.getKey().equals(newProp.getKey())) {
+newShape = newShape.addProperty(newProp);
+} else {
+newShape = newShape.addProperty(prop);
+}
+}
+return newShape;
+}
+/**
+* Find lowest common ancestor of two related shapes.
+*/
+public static ShapeImpl findCommonAncestor(ShapeImpl left, ShapeImpl right) {
+if (!left.isRelated(right)) {
+throw new IllegalArgumentException("shapes must have the same root");
+} else if (left == right) {
+return left;
+}
+int leftLength = left.depth;
+int rightLength = right.depth;
+ShapeImpl leftPtr = left;
+ShapeImpl rightPtr = right;
+while (leftLength > rightLength) {
+leftPtr = leftPtr.parent;
+leftLength--;
+}
+while (rightLength > leftLength) {
+rightPtr = rightPtr.parent;
+rightLength--;
+}
+while (leftPtr != rightPtr) {
+leftPtr = leftPtr.parent;
+rightPtr = rightPtr.parent;
+}
+return leftPtr;
+}
+/**
+* For copying over properties after exchanging the prototype of an object.
+*/
+@TruffleBoundary
+@Override
+public final ShapeImpl copyOverPropertiesInternal(Shape destination) {
+assert ((ShapeImpl) destination).getDepth() == 0;
+List<Property> properties = this.getPropertyListInternal(true);
+ShapeImpl newShape = ((ShapeImpl) destination).addPropertiesInternal(properties);
+return newShape;
+}
+private ShapeImpl addPropertiesInternal(List<Property> properties) {
+ShapeImpl newShape = this;
+for (Property p : properties) {
+newShape = newShape.addPropertyInternal(p);
+}
+return newShape;
+}
+/**
+* NB: this is not an accurate property count.
+*/
+@Override
+public final int getPropertyCount() {
+return propertyCount;
+}
+/**
+* Find difference between two shapes.
+*
+* @see ObjectStorageOptions#TraceReshape
+*/
+public static List<Property> diff(Shape oldShape, Shape newShape) {
+List<Property> oldList = oldShape.getPropertyListInternal(false);
+List<Property> newList = newShape.getPropertyListInternal(false);
+List<Property> diff = new ArrayList<>(oldList);
+diff.addAll(newList);
+List<Property> intersection = new ArrayList<>(oldList);
+intersection.retainAll(newList);
+diff.removeAll(intersection);
+return diff;
+}
+@Override
+public ObjectType getObjectType() {
+return objectType;
+}
+@Override
+public ShapeImpl getRoot() {
+return root;
+}
+@Override
+public final boolean check(DynamicObject subject) {
+return subject.getShape() == this;
+}
+@Override
+public final LayoutImpl getLayout() {
+return layout;
+}
+@Override
+public final Object getData() {
+return extraData;
+}
+@Override
+public final Object getSharedData() {
+return sharedData;
+}
+@TruffleBoundary
+@Override
+public final boolean hasTransitionWithKey(Object key) {
+for (Transition transition : getTransitionMapForRead().keySet()) {
+if (transition instanceof PropertyTransition) {
+if (((PropertyTransition) transition).getProperty().getKey().equals(key)) {
+return true;
+}
+}
+}
+return false;
+}
+/**
+* Clone off a separate shape with new shared data.
+*/
+@TruffleBoundary
+@Override
+public final ShapeImpl createSeparateShape(Object newSharedData) {
+if (parent == null) {
+return cloneRoot(this, newSharedData);
+} else {
+return this.cloneOnto(parent.createSeparateShape(newSharedData));
+}
+}
+@Override
+@TruffleBoundary
+public final ShapeImpl changeType(ObjectType newOps) {
+OperationsTransition transition = new OperationsTransition(newOps);
+ShapeImpl cachedShape = getTransitionMapForRead().get(transition);
+if (cachedShape != null) {
+return cachedShape;
+} else {
+ShapeImpl newShape = createShape(layout, extraData, this, newOps, propertyMap, allocator(), id);
+addTransition(transition, newShape);
+return newShape;
+}
+}
+@Override
+public final Shape reservePrimitiveExtensionArray() {
+if (layout.hasPrimitiveExtensionArray() && !hasPrimitiveArray()) {
+return addPrimitiveExtensionArray();
+}
+return this;
+}
+@Override
+public final Iterable<Property> getProperties() {
+if (getPropertyCount() != 0 && propertyArray == null) {
+CompilerDirectives.transferToInterpreter();
+propertyArray = createPropertiesArray();
+}
+return new Iterable<Property>() {
+public Iterator<Property> iterator() {
+return new Iterator<Property>() {
+private int cursor;
+public boolean hasNext() {
+return cursor < getPropertyCount();
+}
+public Property next() {
+if (hasNext()) {
+return propertyArray[cursor++];
+}
+throw new NoSuchElementException();
+}
+public void remove() {
+throw new UnsupportedOperationException();
+}
+};
+}
+};
+}
+private Property[] createPropertiesArray() {
+propertyListAllocCount.inc();
+Property[] propertiesArray = new Property[getPropertyCount()];
+List<Property> ownProperties = getPropertyList(ALL);
+assert ownProperties.size() == getPropertyCount();
+for (int i = 0; i < getPropertyCount(); i++) {
+propertiesArray[i] = ownProperties.get(i);
+}
+return propertiesArray;
+}
+@Override
+public final DynamicObject newInstance() {
+return layout.newInstance(this);
+}
+@Override
+public final DynamicObjectFactory createFactory() {
+final List<Property> properties = getPropertyListInternal(true);
+for (Iterator<Property> iterator = properties.iterator(); iterator.hasNext();) {
+Property property = iterator.next();
+// skip non-instance fields
+assert property.getLocation() != layout.getPrimitiveArrayLocation();
+if (property.getLocation() instanceof ValueLocation) {
+iterator.remove();
+}
+}
+return new DynamicObjectFactory() {
+@CompilationFinal private final PropertyImpl[] instanceFields = properties.toArray(new PropertyImpl[properties.size()]);
+@ExplodeLoop
+public DynamicObject newInstance(Object... initialValues) {
+DynamicObject store = ShapeImpl.this.newInstance();
+for (int i = 0; i < instanceFields.length; i++) {
+instanceFields[i].setInternal(store, initialValues[i]);
+}
+return store;
+}
+public Shape getShape() {
+return ShapeImpl.this;
+}
+};
+}
+@Override
+public Object getMutex() {
+return getRoot();
+}
+@Override
+public Shape tryMerge(Shape other) {
+return null;
+}
+public abstract static class BaseAllocator extends Allocator {
+protected final LayoutImpl layout;
+protected int objectArraySize;
+protected int objectFieldSize;
+protected int primitiveFieldSize;
+protected int primitiveArraySize;
+protected boolean hasPrimitiveArray;
+protected int depth;
+protected BaseAllocator(LayoutImpl layout) {
+this.layout = layout;
+}
+protected BaseAllocator(ShapeImpl shape) {
+this(shape.getLayout());
+this.objectArraySize = shape.objectArraySize;
+this.objectFieldSize = shape.objectFieldSize;
+this.primitiveFieldSize = shape.primitiveFieldSize;
+this.primitiveArraySize = shape.primitiveArraySize;
+this.hasPrimitiveArray = shape.hasPrimitiveArray;
+this.depth = shape.depth;
+}
+protected abstract Location moveLocation(Location oldLocation);
+protected abstract Location newObjectLocation(boolean useFinal, boolean nonNull);
+protected abstract Location newTypedObjectLocation(boolean useFinal, Class<?> type, boolean nonNull);
+protected abstract Location newIntLocation(boolean useFinal);
+protected abstract Location newDoubleLocation(boolean useFinal);
+protected abstract Location newLongLocation(boolean useFinal);
+protected abstract Location newBooleanLocation(boolean useFinal);
+@Override
+public final Location constantLocation(Object value) {
+return new ConstantLocation(value);
+}
+@Override
+protected Location locationForValue(Object value, boolean useFinal, boolean nonNull) {
+if (value instanceof Integer) {
+return newIntLocation(useFinal);
+} else if (value instanceof Double) {
+return newDoubleLocation(useFinal);
+} else if (value instanceof Long) {
+return newLongLocation(useFinal);
+} else if (value instanceof Boolean) {
+return newBooleanLocation(useFinal);
+} else if (ObjectStorageOptions.TypedObjectLocations && value != null) {
+return newTypedObjectLocation(useFinal, value.getClass(), nonNull);
+}
+return newObjectLocation(useFinal, nonNull && value != null);
+}
+protected abstract Location locationForValueUpcast(Object value, Location oldLocation);
+@Override
+protected Location locationForType(Class<?> type, boolean useFinal, boolean nonNull) {
+if (type == int.class) {
+return newIntLocation(useFinal);
+} else if (type == double.class) {
+return newDoubleLocation(useFinal);
+} else if (type == long.class) {
+return newLongLocation(useFinal);
+} else if (type == boolean.class) {
+return newBooleanLocation(useFinal);
+} else if (ObjectStorageOptions.TypedObjectLocations && type != null && type != Object.class) {
+assert !type.isPrimitive() : "unsupported primitive type";
+return newTypedObjectLocation(useFinal, type, nonNull);
+}
+return newObjectLocation(useFinal, nonNull);
+}
+protected Location newDualLocation(Class<?> type) {
+return new DualLocation((InternalLongLocation) newLongLocation(false), (ObjectLocation) newObjectLocation(false, false), layout, type);
+}
+protected DualLocation newDualLocationForValue(Object value) {
+Class<?> initialType = null;
+if (value instanceof Integer) {
+initialType = int.class;
+} else if (value instanceof Double) {
+initialType = double.class;
+} else if (value instanceof Boolean) {
+initialType = boolean.class;
+} else {
+initialType = Object.class;
+}
+return new DualLocation((InternalLongLocation) newLongLocation(false), (ObjectLocation) newObjectLocation(false, false), layout, initialType);
+}
+protected Location newDeclaredDualLocation(Object value) {
+return new DeclaredDualLocation((InternalLongLocation) newLongLocation(false), (ObjectLocation) newObjectLocation(false, false), value, layout);
+}
+protected <T extends Location> T advance(T location0) {
+if (location0 instanceof LocationImpl) {
+LocationImpl location = (LocationImpl) location0;
+objectArraySize += location.objectArrayCount();
+primitiveArraySize += location.primitiveArrayCount();
+primitiveFieldSize += location.primitiveFieldCount();
+if (layout.hasPrimitiveExtensionArray()) {
+hasPrimitiveArray |= location == layout.getPrimitiveArrayLocation() || location.primitiveArrayCount() != 0;
+objectFieldSize = location == layout.getPrimitiveArrayLocation() ? objectFieldSize : Math.max(objectFieldSize, layout.objectFieldIndex(location) + location.objectFieldCount());
+} else {
+assert !hasPrimitiveArray && location.primitiveArrayCount() == 0;
+objectFieldSize += location.objectFieldCount();
+}
+}
+depth++;
+return location0;
+}
+@Override
+public BaseAllocator addLocation(Location location) {
+advance(location);
+return this;
+}
+}
+private static void debugRegisterShape(ShapeImpl newShape) {
+if (ObjectStorageOptions.DumpShapes) {
+Debug.registerShape(newShape);
+}
+}
+/**
+* Match all filter.
+*/
+public static final Pred<Property> ALL = new Pred<Property>() {
+public boolean test(Property t) {
+return true;
+}
+};
+private static final DebugCounter shapeCount = DebugCounter.create("Shapes allocated total");
+private static final DebugCounter shapeCloneCount = DebugCounter.create("Shapes allocated cloned");
+private static final DebugCounter shapeCacheHitCount = DebugCounter.create("Shape cache hits");
+private static final DebugCounter shapeCacheMissCount = DebugCounter.create("Shape cache misses");
+protected static final DebugCounter propertyListAllocCount = DebugCounter.create("Property lists allocated");
+protected static final DebugCounter propertyListShareCount = DebugCounter.create("Property lists shared");
+}

Mercurial > hg > graal-compiler

comparison graal/com.oracle.truffle.object/src/com/oracle/truffle/object/ShapeImpl.java @ 18408:2c3666f44855