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Truffle is a multi-language framework for executing dynamic languages
that achieves high performance when combined with Graal.
/*
* Copyright (c) 2020, 2021, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* The Universal Permissive License (UPL), Version 1.0
*
* Subject to the condition set forth below, permission is hereby granted to any
* person obtaining a copy of this software, associated documentation and/or
* data (collectively the "Software"), free of charge and under any and all
* copyright rights in the Software, and any and all patent rights owned or
* freely licensable by each licensor hereunder covering either (i) the
* unmodified Software as contributed to or provided by such licensor, or (ii)
* the Larger Works (as defined below), to deal in both
*
* (a) the Software, and
*
* (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
* one is included with the Software each a "Larger Work" to which the Software
* is contributed by such licensors),
*
* without restriction, including without limitation the rights to copy, create
* derivative works of, display, perform, and distribute the Software and make,
* use, sell, offer for sale, import, export, have made, and have sold the
* Software and the Larger Work(s), and to sublicense the foregoing rights on
* either these or other terms.
*
* This license is subject to the following condition:
*
* The above copyright notice and either this complete permission notice or at a
* minimum a reference to the UPL must be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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*/
package com.oracle.truffle.api.impl;
import java.util.function.Function;
import com.oracle.truffle.api.frame.Frame;
import com.oracle.truffle.api.frame.VirtualFrame;
import com.oracle.truffle.api.nodes.BytecodeOSRNode;
import org.graalvm.options.OptionDescriptors;
import org.graalvm.options.OptionValues;
import com.oracle.truffle.api.CallTarget;
import com.oracle.truffle.api.TruffleLogger;
import com.oracle.truffle.api.nodes.BlockNode;
import com.oracle.truffle.api.nodes.BlockNode.ElementExecutor;
import com.oracle.truffle.api.nodes.Node;
import com.oracle.truffle.api.nodes.RootNode;
final class DefaultRuntimeAccessor extends Accessor {
private static final DefaultRuntimeAccessor ACCESSOR = new DefaultRuntimeAccessor();
static final NodeSupport NODES = ACCESSOR.nodeSupport();
static final SourceSupport SOURCE = ACCESSOR.sourceSupport();
static final InstrumentSupport INSTRUMENT = ACCESSOR.instrumentSupport();
static final LanguageSupport LANGUAGE = ACCESSOR.languageSupport();
static final JDKSupport JDK = ACCESSOR.jdkSupport();
static final EngineSupport ENGINE = ACCESSOR.engineSupport();
static final InteropSupport INTEROP = ACCESSOR.interopSupport();
private DefaultRuntimeAccessor() {
}
static final class DefaultRuntimeSupport extends RuntimeSupport {
DefaultRuntimeSupport(Object permission) {
super(permission);
}
@Override
public ThreadLocalHandshake getThreadLocalHandshake() {
return DefaultThreadLocalHandshake.SINGLETON;
}
@Override
public void onLoopCount(Node source, int iterations) {
// do nothing
}
@Override
public boolean pollBytecodeOSRBackEdge(BytecodeOSRNode osrNode) {
return false;
}
@Override
public Object tryBytecodeOSR(BytecodeOSRNode osrNode, int target, Object interpreterState, Runnable beforeTransfer, VirtualFrame parentFrame) {
return null;
}
@Override
public void onOSRNodeReplaced(BytecodeOSRNode osrNode, Node oldNode, Node newNode, CharSequence reason) {
// do nothing
}
@Override
public void transferOSRFrame(BytecodeOSRNode osrNode, Frame source, Frame target) {
throw new UnsupportedOperationException();
}
@Override
public OptionDescriptors getEngineOptionDescriptors() {
return OptionDescriptors.EMPTY;
}
@Override
public boolean isGuestCallStackFrame(StackTraceElement e) {
String methodName = e.getMethodName();
return (methodName.equals(DefaultCallTarget.CALL_BOUNDARY_METHOD)) && e.getClassName().equals(DefaultCallTarget.class.getName());
}
@Override
public void initializeProfile(CallTarget target, Class[] argumentTypes) {
// nothing to do
}
@Override
public BlockNode createBlockNode(T[] elements, ElementExecutor executor) {
return new DefaultBlockNode<>(elements, executor);
}
@Override
public void onEngineClosed(Object runtimeData) {
}
@Override
public String getSavedProperty(String key) {
return System.getProperty(key);
}
@Override
public Object callInlined(Node callNode, CallTarget target, Object... arguments) {
return ((DefaultCallTarget) target).callDirectOrIndirect(callNode, arguments);
}
@Override
public Object callProfiled(CallTarget target, Object... arguments) {
return ((DefaultCallTarget) target).call(arguments);
}
@Override
public Object[] castArrayFixedLength(Object[] args, int length) {
return args;
}
@Override
public void flushCompileQueue(Object runtimeData) {
// default runtime has no compile queue.
}
@SuppressWarnings("unchecked")
@Override
public T unsafeCast(Object value, Class type, boolean condition, boolean nonNull, boolean exact) {
return (T) value;
}
@Override
public boolean inFirstTier() {
return false;
}
@Override
public void reportPolymorphicSpecialize(Node source) {
}
@Override
public Object createRuntimeData(OptionValues options, Function loggerFactory) {
return null;
}
@Override
public Object tryLoadCachedEngine(OptionValues runtimeData, Function loggerFactory) {
return null;
}
@Override
public void onEngineCreate(Object engine, Object runtimeData) {
}
@Override
public boolean isStoreEnabled(OptionValues options) {
return false;
}
@Override
public void onEnginePatch(Object runtimeData, OptionValues options, Function loggerFactory) {
}
@Override
public boolean onEngineClosing(Object runtimeData) {
return false;
}
@Override
public boolean isOSRRootNode(RootNode rootNode) {
return false;
}
@Override
public int getObjectAlignment() {
throw new UnsupportedOperationException();
}
@SuppressWarnings("unused")
@Override
public int getArrayBaseOffset(Class componentType) {
throw new UnsupportedOperationException();
}
@SuppressWarnings("unused")
@Override
public int getArrayIndexScale(Class componentType) {
throw new UnsupportedOperationException();
}
@SuppressWarnings("unused")
@Override
public int getBaseInstanceSize(Class type) {
throw new UnsupportedOperationException();
}
@SuppressWarnings("unused")
@Override
public Object[] getNonPrimitiveResolvedFields(Class type) {
throw new UnsupportedOperationException();
}
@SuppressWarnings("unused")
@Override
public Object getFieldValue(Object resolvedJavaField, Object obj) {
throw new UnsupportedOperationException();
}
@Override
public AbstractFastThreadLocal getContextThreadLocal() {
return DefaultContextThreadLocal.SINGLETON;
}
}
}