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Truffle is a multi-language framework for executing dynamic languages
that achieves high performance when combined with Graal.
// CheckStyle: start generated
package com.oracle.truffle.api.library;
import com.oracle.truffle.api.CompilerDirectives;
import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
import com.oracle.truffle.api.dsl.GeneratedBy;
import com.oracle.truffle.api.nodes.EncapsulatingNodeReference;
import com.oracle.truffle.api.nodes.ExplodeLoop;
import com.oracle.truffle.api.nodes.Node;
import com.oracle.truffle.api.nodes.NodeCost;
import com.oracle.truffle.api.utilities.FinalBitSet;
import java.util.Arrays;
import java.util.BitSet;
import java.util.Collections;
import java.util.concurrent.locks.Lock;
@GeneratedBy(DynamicDispatchLibrary.class)
@SuppressWarnings("unused")
final class DynamicDispatchLibraryGen extends LibraryFactory {
private static final Class LIBRARY_CLASS = DynamicDispatchLibraryGen.lazyLibraryClass();
private static final Message DISPATCH = new MessageImpl("dispatch", 0, Class.class, Object.class);
private static final DynamicDispatchLibraryGen INSTANCE = new DynamicDispatchLibraryGen();
static {
LibraryExport.register(DynamicDispatchLibraryGen.LIBRARY_CLASS, new Default());
LibraryFactory.register(DynamicDispatchLibraryGen.LIBRARY_CLASS, INSTANCE);
}
private DynamicDispatchLibraryGen() {
super(DynamicDispatchLibraryGen.LIBRARY_CLASS, Collections.unmodifiableList(Arrays.asList(DynamicDispatchLibraryGen.DISPATCH)));
}
@Override
protected Class getDefaultClass(Object receiver) {
return DynamicDispatchLibrary.class;
}
@Override
protected DynamicDispatchLibrary createProxy(ReflectionLibrary library) {
return new Proxy(library);
}
@Override
protected FinalBitSet createMessageBitSet(@SuppressWarnings({"unused", "hiding"}) Message... messages) {
BitSet bitSet = new BitSet(2);
for (Message message : messages) {
bitSet.set(((MessageImpl) message).index);
}
return FinalBitSet.valueOf(bitSet);
}
@Override
protected DynamicDispatchLibrary createDelegate(DynamicDispatchLibrary delegateLibrary) {
return new Delegate(delegateLibrary);
}
@Override
protected Object genericDispatch(Library originalLib, Object receiver, Message message, Object[] args, int offset) throws Exception {
DynamicDispatchLibrary lib = (DynamicDispatchLibrary) originalLib;
MessageImpl messageImpl = (MessageImpl) message;
if (messageImpl.getParameterCount() - 1 != args.length - offset) {
CompilerDirectives.transferToInterpreterAndInvalidate();
throw new IllegalArgumentException("Invalid number of arguments.");
}
switch (messageImpl.index) {
case 0 :
return lib.dispatch(receiver);
}
CompilerDirectives.transferToInterpreterAndInvalidate();
throw new AbstractMethodError(message.toString());
}
@Override
protected DynamicDispatchLibrary createDispatchImpl(int limit) {
return new CachedDispatchFirst(null, null, limit);
}
@Override
protected DynamicDispatchLibrary createUncachedDispatch() {
return new UncachedDispatch();
}
@SuppressWarnings("unchecked")
private static Class lazyLibraryClass() {
try {
return (Class) Class.forName("com.oracle.truffle.api.library.DynamicDispatchLibrary", false, DynamicDispatchLibraryGen.class.getClassLoader());
} catch (ClassNotFoundException e) {
throw CompilerDirectives.shouldNotReachHere(e);
}
}
@GeneratedBy(DynamicDispatchLibrary.class)
private static final class Default extends LibraryExport {
private Default() {
super(DynamicDispatchLibrary.class, Object.class, false, false, 0);
}
@Override
protected DynamicDispatchLibrary createUncached(Object receiver) {
DynamicDispatchLibrary uncached = new Uncached(receiver);
return uncached;
}
@Override
protected DynamicDispatchLibrary createCached(Object receiver) {
return new Cached(receiver);
}
@GeneratedBy(DynamicDispatchLibrary.class)
private static final class Cached extends DynamicDispatchLibrary {
private final Class receiverClass_;
protected Cached(Object receiver) {
this.receiverClass_ = receiver.getClass();
}
@Override
public Object cast(Object receiver) {
return CompilerDirectives.castExact(receiver, receiverClass_);
}
@Override
public boolean accepts(Object receiver) {
return CompilerDirectives.isExact(receiver, this.receiverClass_);
}
@Override
public Class dispatch(Object receiver) {
assert this.accepts(receiver) : "Invalid library usage. Library does not accept given receiver.";
return super.dispatch((CompilerDirectives.castExact(receiver, receiverClass_)));
}
}
@GeneratedBy(DynamicDispatchLibrary.class)
private static final class Uncached extends DynamicDispatchLibrary {
protected Uncached(Object receiver) {
}
@Override
@TruffleBoundary
public boolean accepts(Object receiver) {
return true;
}
@TruffleBoundary
@Override
public Object cast(Object receiver) {
return (receiver);
}
@Override
public boolean isAdoptable() {
return false;
}
@Override
public NodeCost getCost() {
return NodeCost.MEGAMORPHIC;
}
@TruffleBoundary
@Override
public Class dispatch(Object receiver) {
// declared: true
assert this.accepts(receiver) : "Invalid library usage. Library does not accept given receiver.";
return super.dispatch(receiver);
}
}
}
@GeneratedBy(DynamicDispatchLibrary.class)
private static class MessageImpl extends Message {
final int index;
MessageImpl(String name, int index, Class returnType, Class... parameters) {
super(DynamicDispatchLibraryGen.LIBRARY_CLASS, name, returnType, parameters);
this.index = index;
}
}
@GeneratedBy(DynamicDispatchLibrary.class)
private static final class Proxy extends DynamicDispatchLibrary {
@Child private ReflectionLibrary lib;
Proxy(ReflectionLibrary lib) {
this.lib = lib;
}
@Override
public Object cast(Object receiver) {
return receiver;
}
@SuppressWarnings("unchecked")
@Override
public Class dispatch(Object receiver_) {
try {
return (Class) lib.send(receiver_, DynamicDispatchLibraryGen.DISPATCH);
} catch (RuntimeException e_) {
throw e_;
} catch (Exception e_) {
throw CompilerDirectives.shouldNotReachHere(e_);
}
}
@Override
public boolean accepts(Object receiver_) {
return lib.accepts(receiver_);
}
}
@GeneratedBy(DynamicDispatchLibrary.class)
private static final class Delegate extends DynamicDispatchLibrary {
@Child private DynamicDispatchLibrary delegateLibrary;
Delegate(DynamicDispatchLibrary delegateLibrary) {
this.delegateLibrary = delegateLibrary;
}
@Override
public Object cast(Object receiver) {
return delegateLibrary.cast(receiver);
}
@Override
public Class dispatch(Object receiver_) {
if (LibraryFactory.isDelegated(delegateLibrary, 0)) {
Object delegate = LibraryFactory.readDelegate(this.delegateLibrary, receiver_);
return LibraryFactory.getDelegateLibrary(this.delegateLibrary, delegate).dispatch(delegate);
} else {
return this.delegateLibrary.dispatch(receiver_);
}
}
@Override
public boolean accepts(Object receiver_) {
return delegateLibrary.accepts(receiver_);
}
@Override
public NodeCost getCost() {
return NodeCost.NONE;
}
@Override
public boolean isAdoptable() {
return this.delegateLibrary.isAdoptable();
}
}
@GeneratedBy(DynamicDispatchLibrary.class)
private static final class CachedToUncachedDispatch extends DynamicDispatchLibrary {
@Override
public NodeCost getCost() {
return NodeCost.MEGAMORPHIC;
}
@TruffleBoundary
@Override
public Class dispatch(Object receiver_) {
assert getRootNode() != null : "Invalid libray usage. Cached library must be adopted by a RootNode before it is executed.";
EncapsulatingNodeReference encapsulating_ = EncapsulatingNodeReference.getCurrent();
Node prev_ = encapsulating_.set(getParent());
try {
return INSTANCE.getUncached(receiver_).dispatch(receiver_);
} finally {
encapsulating_.set(prev_);
}
}
@Override
public boolean accepts(Object receiver_) {
return true;
}
@Override
public Object cast(Object receiver) {
return receiver;
}
}
@GeneratedBy(DynamicDispatchLibrary.class)
private static final class UncachedDispatch extends DynamicDispatchLibrary {
@Override
public NodeCost getCost() {
return NodeCost.MEGAMORPHIC;
}
@TruffleBoundary
@Override
public Class dispatch(Object receiver_) {
return INSTANCE.getUncached(receiver_).dispatch(receiver_);
}
@TruffleBoundary
@Override
public boolean accepts(Object receiver_) {
return true;
}
@Override
public Object cast(Object receiver) {
return receiver;
}
@Override
public boolean isAdoptable() {
return false;
}
}
@GeneratedBy(DynamicDispatchLibrary.class)
private static final class CachedDispatchNext extends CachedDispatch {
CachedDispatchNext(DynamicDispatchLibrary library, CachedDispatch next) {
super(library, next);
}
@Override
int getLimit() {
throw CompilerDirectives.shouldNotReachHere();
}
@Override
public NodeCost getCost() {
return NodeCost.NONE;
}
}
@GeneratedBy(DynamicDispatchLibrary.class)
private static final class CachedDispatchFirst extends CachedDispatch {
private final int limit_;
CachedDispatchFirst(DynamicDispatchLibrary library, CachedDispatch next, int limit_) {
super(library, next);
this.limit_ = limit_;
}
@Override
int getLimit() {
return this.limit_;
}
@Override
public NodeCost getCost() {
if (this.library instanceof CachedToUncachedDispatch) {
return NodeCost.MEGAMORPHIC;
}
CachedDispatch current = this;
int count = 0;
do {
if (current.library != null) {
count++;
}
current = current.next;
} while (current != null);
return NodeCost.fromCount(count);
}
}
@GeneratedBy(DynamicDispatchLibrary.class)
private abstract static class CachedDispatch extends DynamicDispatchLibrary {
@Child DynamicDispatchLibrary library;
@Child CachedDispatch next;
CachedDispatch(DynamicDispatchLibrary library, CachedDispatch next) {
this.library = library;
this.next = next;
}
abstract int getLimit();
@ExplodeLoop
@Override
public Class dispatch(Object receiver_) {
do {
CachedDispatch current = this;
do {
DynamicDispatchLibrary thisLibrary = current.library;
if (thisLibrary != null && thisLibrary.accepts(receiver_)) {
return thisLibrary.dispatch(receiver_);
}
current = current.next;
} while (current != null);
CompilerDirectives.transferToInterpreterAndInvalidate();
specialize(receiver_);
} while (true);
}
@Override
public boolean accepts(Object receiver_) {
return true;
}
@Override
public Object cast(Object receiver) {
return receiver;
}
private void specialize(Object receiver_) {
Lock lock = getLock();
lock.lock();
try {
CachedDispatch current = this;
DynamicDispatchLibrary thisLibrary = current.library;
if (thisLibrary == null) {
this.library = insert(INSTANCE.create(receiver_));
} else {
int count = 0;
do {
DynamicDispatchLibrary currentLibrary = current.library;
if (currentLibrary != null && currentLibrary.accepts(receiver_)) {
return;
}
count++;
current = current.next;
} while (current != null);
if (count >= getLimit()) {
this.library = insert(new CachedToUncachedDispatch());
this.next = null;
} else {
this.next = insert(new CachedDispatchNext(INSTANCE.create(receiver_), next));
}
}
} finally {
lock.unlock();
}
}
}
}