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com.oracle.truffle.polyglot.PolyglotEngineImpl Maven / Gradle / Ivy
Truffle is a multi-language framework for executing dynamic languages
that achieves high performance when combined with Graal.
/*
* Copyright (c) 2017, 2022, 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
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package com.oracle.truffle.polyglot;
import static com.oracle.truffle.polyglot.EngineAccessor.INSTRUMENT;
import static com.oracle.truffle.polyglot.EngineAccessor.LANGUAGE;
import static com.oracle.truffle.polyglot.EngineAccessor.RUNTIME;
import static org.graalvm.polyglot.impl.AbstractPolyglotImpl.AbstractPolyglotHostService;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.lang.ref.Reference;
import java.lang.ref.ReferenceQueue;
import java.time.Duration;
import java.time.ZoneId;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Objects;
import java.util.Properties;
import java.util.Set;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.concurrent.atomic.AtomicReference;
import java.util.function.Function;
import java.util.function.Predicate;
import java.util.function.Supplier;
import java.util.logging.Handler;
import java.util.logging.Level;
import org.graalvm.collections.EconomicSet;
import org.graalvm.collections.Equivalence;
import org.graalvm.home.HomeFinder;
import org.graalvm.options.OptionDescriptors;
import org.graalvm.polyglot.Engine;
import org.graalvm.polyglot.EnvironmentAccess;
import org.graalvm.polyglot.HostAccess;
import org.graalvm.polyglot.Instrument;
import org.graalvm.polyglot.Language;
import org.graalvm.polyglot.PolyglotAccess;
import org.graalvm.polyglot.Source;
import org.graalvm.polyglot.impl.AbstractPolyglotImpl.AbstractHostLanguageService;
import org.graalvm.polyglot.io.FileSystem;
import org.graalvm.polyglot.io.MessageTransport;
import org.graalvm.polyglot.io.ProcessHandler;
import com.oracle.truffle.api.Assumption;
import com.oracle.truffle.api.CallTarget;
import com.oracle.truffle.api.CompilerAsserts;
import com.oracle.truffle.api.CompilerDirectives;
import com.oracle.truffle.api.CompilerDirectives.CompilationFinal;
import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
import com.oracle.truffle.api.InstrumentInfo;
import com.oracle.truffle.api.Truffle;
import com.oracle.truffle.api.TruffleFile;
import com.oracle.truffle.api.TruffleLanguage;
import com.oracle.truffle.api.TruffleLogger;
import com.oracle.truffle.api.TruffleOptions;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.dsl.SpecializationStatistics;
import com.oracle.truffle.api.exception.AbstractTruffleException;
import com.oracle.truffle.api.impl.DefaultTruffleRuntime;
import com.oracle.truffle.api.impl.DispatchOutputStream;
import com.oracle.truffle.api.instrumentation.ContextsListener;
import com.oracle.truffle.api.instrumentation.ThreadsListener;
import com.oracle.truffle.api.interop.ExceptionType;
import com.oracle.truffle.api.interop.InteropLibrary;
import com.oracle.truffle.api.interop.UnsupportedMessageException;
import com.oracle.truffle.api.library.ExportLibrary;
import com.oracle.truffle.api.library.ExportMessage;
import com.oracle.truffle.api.nodes.LanguageInfo;
import com.oracle.truffle.api.nodes.Node;
import com.oracle.truffle.api.nodes.RootNode;
import com.oracle.truffle.api.source.SourceSection;
import com.oracle.truffle.polyglot.PolyglotContextConfig.PreinitConfig;
import com.oracle.truffle.polyglot.PolyglotContextImpl.ContextWeakReference;
import com.oracle.truffle.polyglot.PolyglotLimits.EngineLimits;
import com.oracle.truffle.polyglot.PolyglotLocals.AbstractContextLocal;
import com.oracle.truffle.polyglot.PolyglotLocals.AbstractContextThreadLocal;
import com.oracle.truffle.polyglot.PolyglotLocals.LocalLocation;
import com.oracle.truffle.polyglot.PolyglotLoggers.EngineLoggerProvider;
import com.oracle.truffle.polyglot.PolyglotLoggers.LoggerCache;
import com.oracle.truffle.polyglot.SystemThread.InstrumentSystemThread;
final class PolyglotEngineImpl implements com.oracle.truffle.polyglot.PolyglotImpl.VMObject {
/**
* Context index for the host language.
*/
static final int HOST_LANGUAGE_INDEX = 0;
static final String HOST_LANGUAGE_ID = "host";
static final String ENGINE_ID = "engine";
static final String OPTION_GROUP_ENGINE = ENGINE_ID;
static final String OPTION_GROUP_LOG = "log";
static final String OPTION_GROUP_IMAGE_BUILD_TIME = "image-build-time";
static final String LOG_FILE_OPTION = OPTION_GROUP_LOG + ".file";
// also update list in LanguageRegistrationProcessor
private static final Set RESERVED_IDS = new HashSet<>(
Arrays.asList(HOST_LANGUAGE_ID, "graal", "truffle", "language", "instrument", "graalvm", "context", "polyglot", "compiler", "vm", "file",
ENGINE_ID, OPTION_GROUP_LOG, OPTION_GROUP_IMAGE_BUILD_TIME));
private static final boolean DEBUG_MISSING_CLOSE = Boolean.getBoolean("polyglotimpl.DebugMissingClose");
static final LocalLocation[] EMPTY_LOCATIONS = new LocalLocation[0];
final Object lock = new Object();
private Thread closingThread;
final Object instrumentationHandler;
final String[] permittedLanguages;
final PolyglotImpl impl;
DispatchOutputStream out; // effectively final
DispatchOutputStream err; // effectively final
InputStream in; // effectively final
Engine api;
// languages by LanguageCache.getStaticIndex()
@CompilationFinal(dimensions = 1) final PolyglotLanguage[] languages;
final Map idToLanguage;
final Map classToLanguage;
final Map idToPublicLanguage;
final Map idToInternalLanguageInfo;
final Map idToInstrument;
final Map idToPublicInstrument;
final Map idToInternalInstrumentInfo;
@CompilationFinal OptionValuesImpl engineOptionValues;
// true if engine is implicitly bound to a context and therefore closed with the context
boolean boundEngine; // effectively final
/*
* True if the runtime wants to store the resulting code when the engine is closed. This means
* that strong references for source caches should be used.
*/
boolean storeEngine; // modified on patch
Handler logHandler; // effectively final
final Exception createdLocation = DEBUG_MISSING_CLOSE ? new Exception() : null;
private final EconomicSet contexts = EconomicSet.create(Equivalence.IDENTITY);
final ReferenceQueue contextsReferenceQueue = new ReferenceQueue<>();
private final AtomicReference preInitializedContext = new AtomicReference<>();
final Assumption singleThreadPerContext = Truffle.getRuntime().createAssumption("Single thread per context of an engine.");
final Assumption noInnerContexts = Truffle.getRuntime().createAssumption("No inner contexts.");
final Assumption customHostClassLoader = Truffle.getRuntime().createAssumption("No custom host class loader needed.");
volatile OptionDescriptors allOptions;
volatile boolean closed;
// field used by the TruffleRuntime implementation to persist state per Engine
final Object runtimeData;
Map logLevels; // effectively final
private volatile Object engineLoggers;
private volatile Supplier>> fileTypeDetectorsSupplier;
final int languageCount;
private volatile EngineLimits limits;
private final MessageTransport messageInterceptor;
private volatile int asynchronousStackDepth = 0;
final SpecializationStatistics specializationStatistics;
Function engineLoggerSupplier; // effectively final
private volatile TruffleLogger engineLogger;
final WeakAssumedValue singleContextValue = new WeakAssumedValue<>("single context");
@CompilationFinal volatile StableLocalLocations contextLocalLocations = new StableLocalLocations(EMPTY_LOCATIONS);
@CompilationFinal volatile StableLocalLocations contextThreadLocalLocations = new StableLocalLocations(EMPTY_LOCATIONS);
final PolyglotLanguage hostLanguage;
@CompilationFinal AbstractHostLanguageService host; // effectively final
final boolean hostLanguageOnly;
final List sharedLayers = new ArrayList<>();
private boolean runtimeInitialized;
final AbstractPolyglotHostService polyglotHostService;
private final Set activeSystemThreads = Collections.newSetFromMap(new HashMap<>());
@SuppressWarnings("unchecked")
PolyglotEngineImpl(PolyglotImpl impl, String[] permittedLanguages,
DispatchOutputStream out, DispatchOutputStream err, InputStream in, OptionValuesImpl engineOptions,
Map logLevels,
EngineLoggerProvider engineLogger, Map options,
boolean allowExperimentalOptions, boolean boundEngine, boolean preInitialization,
MessageTransport messageInterceptor, Handler logHandler,
TruffleLanguage hostImpl, boolean hostLanguageOnly, AbstractPolyglotHostService polyglotHostService) {
this.messageInterceptor = messageInterceptor;
this.impl = impl;
this.permittedLanguages = permittedLanguages;
this.out = out;
this.err = err;
this.in = in;
this.logHandler = logHandler;
this.logLevels = logLevels;
this.hostLanguage = createLanguage(LanguageCache.createHostLanguageCache(hostImpl), PolyglotEngineImpl.HOST_LANGUAGE_INDEX, null);
this.boundEngine = boundEngine;
this.storeEngine = RUNTIME.isStoreEnabled(engineOptions);
this.hostLanguageOnly = hostLanguageOnly;
this.polyglotHostService = polyglotHostService != null ? polyglotHostService : new DefaultPolyglotHostService(impl);
Map languageInfos = new LinkedHashMap<>();
this.idToLanguage = Collections.unmodifiableMap(initializeLanguages(languageInfos));
this.idToInternalLanguageInfo = Collections.unmodifiableMap(languageInfos);
this.languageCount = idToLanguage.values().size() + 1 /* +1 for host language */;
this.languages = createLanguageStaticIndex();
Map instrumentInfos = new LinkedHashMap<>();
this.idToInstrument = Collections.unmodifiableMap(initializeInstruments(instrumentInfos));
this.idToInternalInstrumentInfo = Collections.unmodifiableMap(instrumentInfos);
this.runtimeData = RUNTIME.createRuntimeData(engineOptions, engineLogger);
this.classToLanguage = new HashMap<>();
for (PolyglotLanguage language : idToLanguage.values()) {
classToLanguage.put(language.cache.getClassName(), language);
}
for (String id : idToLanguage.keySet()) {
if (idToInstrument.containsKey(id)) {
throw failDuplicateId(id,
idToLanguage.get(id).cache.getClassName(),
idToInstrument.get(id).cache.getClassName());
}
}
this.engineLoggerSupplier = engineLogger;
this.engineOptionValues = engineOptions;
Map publicLanguages = new LinkedHashMap<>();
for (String key : this.idToLanguage.keySet()) {
PolyglotLanguage languageImpl = idToLanguage.get(key);
if (!languageImpl.cache.isInternal()) {
publicLanguages.put(key, languageImpl.api);
}
}
this.idToPublicLanguage = Collections.unmodifiableMap(publicLanguages);
Map publicInstruments = new LinkedHashMap<>();
for (String key : this.idToInstrument.keySet()) {
PolyglotInstrument instrumentImpl = idToInstrument.get(key);
if (!instrumentImpl.cache.isInternal()) {
publicInstruments.put(key, instrumentImpl.api);
}
}
this.idToPublicInstrument = Collections.unmodifiableMap(publicInstruments);
this.instrumentationHandler = INSTRUMENT.createInstrumentationHandler(this, out, err, in, messageInterceptor, storeEngine);
if (isSharingEnabled(null)) {
initializeMultiContext();
}
Map> languagesOptions = new HashMap<>();
Map> instrumentsOptions = new HashMap<>();
parseOptions(options, languagesOptions, instrumentsOptions);
for (PolyglotLanguage language : languagesOptions.keySet()) {
language.getOptionValues().putAll(this, languagesOptions.get(language), allowExperimentalOptions);
}
if (engineOptionValues.get(PolyglotEngineOptions.SpecializationStatistics)) {
this.specializationStatistics = SpecializationStatistics.create();
} else {
this.specializationStatistics = null;
}
notifyCreated();
if (!preInitialization) {
createInstruments(instrumentsOptions, allowExperimentalOptions);
}
}
/**
* Returns true if this engine should try to share code between language contexts.
*
*/
boolean isSharingEnabled(PolyglotContextConfig config) {
boolean forced = engineOptionValues.get(PolyglotEngineOptions.ForceCodeSharing);
boolean disabled = engineOptionValues.get(PolyglotEngineOptions.DisableCodeSharing);
if (forced && disabled) {
throw PolyglotEngineException.illegalState("Option engine.ForceCodeSharing can not be true at the same time as engine.DisableCodeSahring.");
}
forced |= config != null && config.isCodeSharingForced();
disabled |= config != null && config.isCodeSharingDisabled();
return !disabled && (forced || !boundEngine || storeEngine);
}
boolean isStoreEngine() {
return storeEngine;
}
TruffleLanguage getHostLanguageSPI() {
assert hostLanguage.cache.loadLanguage() == hostLanguage.cache.loadLanguage() : "host language caches must always return the same instance";
return hostLanguage.cache.loadLanguage();
}
/*
* Sharing layers are allocated when the first non-host language context is created.
*/
void claimSharingLayer(PolyglotSharingLayer layer, PolyglotContextImpl context, PolyglotLanguage requestingLanguage) {
assert Thread.holdsLock(lock);
assert !layer.isClaimed();
for (PolyglotSharingLayer sharableLayer : sharedLayers) {
if (layer.claimLayerForContext(sharableLayer, context, Collections.singleton(requestingLanguage))) {
assert layer.isClaimed();
return;
}
}
boolean result = layer.claimLayerForContext(null, context, Collections.singleton(requestingLanguage));
assert result : "new layer must be compatible";
switch (layer.getContextPolicy()) {
case EXCLUSIVE:
case REUSE:
// nothing to do, cannot be reused directly.
break;
case SHARED:
assert layer.isClaimed();
sharedLayers.add(layer);
break;
default:
throw CompilerDirectives.shouldNotReachHere();
}
}
void freeSharingLayer(PolyglotSharingLayer layer, PolyglotContextImpl context) {
assert Thread.holdsLock(lock);
assert layer.isClaimed();
layer.freeSharingLayer(context);
switch (layer.getContextPolicy()) {
case EXCLUSIVE:
break;
case REUSE:
sharedLayers.add(layer);
break;
case SHARED:
// already in sharingLayers
assert sharedLayers.contains(layer);
break;
default:
throw CompilerDirectives.shouldNotReachHere();
}
}
void ensureRuntimeInitialized(PolyglotContextImpl context) {
assert Thread.holdsLock(lock);
if (runtimeInitialized) {
return;
}
runtimeInitialized = true;
if (TruffleOptions.AOT) {
// we do not need to trigger runtime in native image
return;
}
// we crate a dummy node
RootNode node = RootNode.createConstantNode(42);
// since we are not entered we need to set the sharing layer here
EngineAccessor.NODES.setSharingLayer(node, context.layer);
// this is intended to trigger Truffle runtime initialization in the background
node.getCallTarget();
}
/**
* Creates an array of languages that can be used to efficiently access languages using
* {@link LanguageCache#getStaticIndex()}.
*/
private PolyglotLanguage[] createLanguageStaticIndex() {
int maxLanguageStaticId = HOST_LANGUAGE_INDEX;
for (PolyglotLanguage language : idToLanguage.values()) {
maxLanguageStaticId = Math.max(maxLanguageStaticId, language.cache.getStaticIndex());
}
PolyglotLanguage[] list = new PolyglotLanguage[maxLanguageStaticId + 1];
list[HOST_LANGUAGE_INDEX] = hostLanguage;
for (PolyglotLanguage language : idToLanguage.values()) {
assert list[language.cache.getStaticIndex()] == null : "language index used twice";
list[language.cache.getStaticIndex()] = language;
}
return list;
}
void notifyCreated() {
RUNTIME.onEngineCreate(this, this.runtimeData);
}
@SuppressWarnings("unchecked")
PolyglotEngineImpl(PolyglotEngineImpl prototype) {
this.messageInterceptor = prototype.messageInterceptor;
this.instrumentationHandler = INSTRUMENT.createInstrumentationHandler(
this,
INSTRUMENT.createDispatchOutput(INSTRUMENT.getOut(prototype.out)),
INSTRUMENT.createDispatchOutput(INSTRUMENT.getOut(prototype.err)),
prototype.in,
prototype.messageInterceptor, prototype.storeEngine);
this.impl = prototype.impl;
this.permittedLanguages = prototype.permittedLanguages;
this.out = prototype.out;
this.err = prototype.err;
this.in = prototype.in;
this.host = prototype.host;
this.boundEngine = prototype.boundEngine;
this.logHandler = prototype.logHandler;
this.hostLanguage = createLanguage(LanguageCache.createHostLanguageCache((TruffleLanguage) prototype.getHostLanguageSPI()), PolyglotEngineImpl.HOST_LANGUAGE_INDEX, null);
this.runtimeData = RUNTIME.createRuntimeData(prototype.engineOptionValues, prototype.engineLoggerSupplier);
this.engineLoggerSupplier = prototype.engineLoggerSupplier;
this.polyglotHostService = prototype.polyglotHostService;
Map languageInfos = new LinkedHashMap<>();
this.hostLanguageOnly = prototype.hostLanguageOnly;
this.idToLanguage = Collections.unmodifiableMap(initializeLanguages(languageInfos));
this.idToInternalLanguageInfo = Collections.unmodifiableMap(languageInfos);
this.languageCount = idToLanguage.size() + 1 /* +1 for host language */;
this.languages = createLanguageStaticIndex();
Map instrumentInfos = new LinkedHashMap<>();
this.idToInstrument = Collections.unmodifiableMap(initializeInstruments(instrumentInfos));
this.idToInternalInstrumentInfo = Collections.unmodifiableMap(instrumentInfos);
this.classToLanguage = new HashMap<>();
for (PolyglotLanguage language : idToLanguage.values()) {
classToLanguage.put(language.cache.getClassName(), language);
}
for (String id : idToLanguage.keySet()) {
if (idToInstrument.containsKey(id)) {
throw failDuplicateId(id,
idToLanguage.get(id).cache.getClassName(),
idToInstrument.get(id).cache.getClassName());
}
}
Map publicLanguages = new LinkedHashMap<>();
for (String key : this.idToLanguage.keySet()) {
PolyglotLanguage languageImpl = idToLanguage.get(key);
if (!languageImpl.cache.isInternal()) {
publicLanguages.put(key, languageImpl.api);
}
}
idToPublicLanguage = Collections.unmodifiableMap(publicLanguages);
Map publicInstruments = new LinkedHashMap<>();
for (String key : this.idToInstrument.keySet()) {
PolyglotInstrument instrumentImpl = idToInstrument.get(key);
if (!instrumentImpl.cache.isInternal()) {
publicInstruments.put(key, instrumentImpl.api);
}
}
idToPublicInstrument = Collections.unmodifiableMap(publicInstruments);
logLevels = prototype.logLevels;
this.engineOptionValues = prototype.engineOptionValues.copy();
if (isSharingEnabled(null)) {
initializeMultiContext();
}
for (String languageId : idToLanguage.keySet()) {
OptionValuesImpl prototypeOptions = prototype.idToLanguage.get(languageId).getOptionValuesIfExists();
if (prototypeOptions != null) {
prototypeOptions.copyInto(idToLanguage.get(languageId).getOptionValues());
}
}
if (this.engineOptionValues.get(PolyglotEngineOptions.SpecializationStatistics)) {
this.specializationStatistics = SpecializationStatistics.create();
} else {
this.specializationStatistics = null;
}
Collection instrumentsToCreate = new ArrayList<>();
for (String instrumentId : idToInstrument.keySet()) {
OptionValuesImpl prototypeOptions = prototype.idToInstrument.get(instrumentId).getOptionValuesIfExists();
if (prototypeOptions != null) {
PolyglotInstrument instrument = idToInstrument.get(instrumentId);
prototypeOptions.copyInto(instrument.getEngineOptionValues());
instrumentsToCreate.add(instrument);
}
}
this.api = getAPIAccess().newEngine(impl.engineDispatch, this, true);
ensureInstrumentsCreated(instrumentsToCreate);
notifyCreated();
}
TruffleLogger getEngineLogger() {
TruffleLogger result = this.engineLogger;
if (result == null) {
synchronized (this.lock) {
result = this.engineLogger;
if (result == null) {
result = this.engineLoggerSupplier.apply(OPTION_GROUP_ENGINE);
Object logger = EngineAccessor.LANGUAGE.getLoggerCache(result);
LoggerCache loggerCache = (LoggerCache) EngineAccessor.LANGUAGE.getLoggersSPI(logger);
loggerCache.setOwner(this);
if (!logLevels.isEmpty()) {
EngineAccessor.LANGUAGE.configureLoggers(this, logLevels, logger);
}
this.engineLogger = result;
}
}
}
return result;
}
Object getOrCreateEngineLoggers() {
Object res = engineLoggers;
if (res == null) {
synchronized (this.lock) {
res = engineLoggers;
if (res == null) {
LoggerCache loggerCache = PolyglotLoggers.LoggerCache.newEngineLoggerCache(this);
loggerCache.setOwner(this);
res = LANGUAGE.createEngineLoggers(loggerCache);
if (!logLevels.isEmpty()) {
EngineAccessor.LANGUAGE.configureLoggers(this, logLevels, res);
}
for (ContextWeakReference contextRef : contexts) {
PolyglotContextImpl context = contextRef.get();
if (context != null && !context.config.logLevels.isEmpty()) {
LANGUAGE.configureLoggers(context, context.config.logLevels, res);
}
}
engineLoggers = res;
}
}
}
return res;
}
static OptionDescriptors createEngineOptionDescriptors() {
OptionDescriptors engineOptionDescriptors = new PolyglotEngineOptionsOptionDescriptors();
OptionDescriptors compilerOptionDescriptors = EngineAccessor.RUNTIME.getEngineOptionDescriptors();
return OptionDescriptors.createUnion(engineOptionDescriptors, compilerOptionDescriptors);
}
void patch(DispatchOutputStream newOut,
DispatchOutputStream newErr,
InputStream newIn,
OptionValuesImpl engineOptions,
LogConfig newLogConfig,
EngineLoggerProvider logSupplier,
Map newOptions,
boolean newAllowExperimentalOptions,
boolean newBoundEngine, Handler newLogHandler, AbstractPolyglotHostService newPolyglotHostService) {
CompilerAsserts.neverPartOfCompilation();
this.out = newOut;
this.err = newErr;
this.in = newIn;
this.boundEngine = newBoundEngine;
this.logHandler = newLogHandler;
this.engineOptionValues = engineOptions;
this.logLevels = newLogConfig.logLevels;
this.polyglotHostService.patch(newPolyglotHostService);
/*
* Store must only go from false to true, and never back. As it is used for
* isSharingEnabled().
*/
this.storeEngine = this.storeEngine || RUNTIME.isStoreEnabled(engineOptions);
this.engineLoggerSupplier = logSupplier;
this.engineLogger = null;
INSTRUMENT.patchInstrumentationHandler(instrumentationHandler, newOut, newErr, newIn);
Map> languagesOptions = new HashMap<>();
Map> instrumentsOptions = new HashMap<>();
parseOptions(newOptions, languagesOptions, instrumentsOptions);
RUNTIME.onEnginePatch(this.runtimeData, engineOptions, logSupplier);
for (PolyglotLanguage language : languagesOptions.keySet()) {
language.getOptionValues().putAll(this, languagesOptions.get(language), newAllowExperimentalOptions);
}
// Set instruments options but do not call onCreate. OnCreate is called only in case of
// successful context patch.
for (PolyglotInstrument instrument : instrumentsOptions.keySet()) {
instrument.getEngineOptionValues().putAll(this, instrumentsOptions.get(instrument), newAllowExperimentalOptions);
}
}
static Handler createLogHandler(LogConfig logConfig, DispatchOutputStream errDispatchOutputStream) {
if (logConfig.logFile != null) {
if (ALLOW_IO) {
return PolyglotLoggers.getFileHandler(logConfig.logFile);
} else {
throw PolyglotEngineException.illegalState("The `log.file` option is not allowed when the allowIO() privilege is removed at image build time.");
}
} else {
return PolyglotLoggers.createDefaultHandler(INSTRUMENT.getOut(errDispatchOutputStream));
}
}
private void createInstruments(Map> instrumentsOptions, boolean allowExperimentalOptions) {
for (PolyglotInstrument instrument : instrumentsOptions.keySet()) {
instrument.getEngineOptionValues().putAll(this, instrumentsOptions.get(instrument), allowExperimentalOptions);
}
ensureInstrumentsCreated(instrumentsOptions.keySet());
}
static void ensureInstrumentsCreated(Collection instruments) {
for (PolyglotInstrument instrument : instruments) {
// we got options for this instrument -> create it.
instrument.ensureCreated();
}
}
void initializeMultiContext() {
singleContextValue.invalidate();
}
static void parseEngineOptions(Map allOptions, Map engineOptions, LogConfig logOptions) {
Iterator> iterator = allOptions.entrySet().iterator();
while (iterator.hasNext()) {
Entry entry = iterator.next();
String key = entry.getKey();
String value = entry.getValue();
String group = parseOptionGroup(key);
if (group.equals(OPTION_GROUP_ENGINE)) {
engineOptions.put(entry.getKey(), entry.getValue());
iterator.remove();
continue;
}
if (group.equals(OPTION_GROUP_LOG)) {
if (LOG_FILE_OPTION.equals(key)) {
logOptions.logFile = value;
} else {
logOptions.logLevels.put(parseLoggerName(key), Level.parse(value));
}
iterator.remove();
continue;
}
}
}
private void parseOptions(Map options,
Map> languagesOptions,
Map> instrumentsOptions) {
for (String key : options.keySet()) {
String group = parseOptionGroup(key);
String value = options.get(key);
PolyglotLanguage language = idToLanguage.get(group);
if (language != null && !language.cache.isInternal()) {
Map languageOptions = languagesOptions.get(language);
if (languageOptions == null) {
languageOptions = new HashMap<>();
languagesOptions.put(language, languageOptions);
}
languageOptions.put(key, value);
continue;
}
PolyglotInstrument instrument = idToInstrument.get(group);
if (instrument != null && !instrument.cache.isInternal()) {
Map instrumentOptions = instrumentsOptions.get(instrument);
if (instrumentOptions == null) {
instrumentOptions = new HashMap<>();
instrumentsOptions.put(instrument, instrumentOptions);
}
instrumentOptions.put(key, value);
continue;
}
switch (group) {
case OPTION_GROUP_ENGINE:
case OPTION_GROUP_LOG:
throw new AssertionError("Log or engine options should already be parsed.");
case OPTION_GROUP_IMAGE_BUILD_TIME:
throw PolyglotEngineException.illegalArgument("Image build-time option '" + key + "' cannot be set at runtime");
}
throw OptionValuesImpl.failNotFound(getAllOptions(), key);
}
}
static Map readOptionsFromSystemProperties(Map options) {
Properties properties = System.getProperties();
Map newOptions = null;
synchronized (properties) {
for (Object systemKey : properties.keySet()) {
if (PolyglotImpl.PROP_ALLOW_EXPERIMENTAL_OPTIONS.equals(systemKey)) {
continue;
}
String key = (String) systemKey;
if (key.startsWith(OptionValuesImpl.SYSTEM_PROPERTY_PREFIX)) {
final String optionKey = key.substring(OptionValuesImpl.SYSTEM_PROPERTY_PREFIX.length());
// Image build time options are not set in runtime options
if (!optionKey.startsWith(OPTION_GROUP_IMAGE_BUILD_TIME)) {
// system properties cannot override existing options
if (!options.containsKey(optionKey)) {
if (newOptions == null) {
newOptions = new HashMap<>(options);
}
newOptions.put(optionKey, System.getProperty(key));
}
}
}
}
}
if (newOptions == null) {
return options;
} else {
return newOptions;
}
}
static String parseOptionGroup(String key) {
int groupIndex = key.indexOf('.');
String group;
if (groupIndex != -1) {
group = key.substring(0, groupIndex);
} else {
group = key;
}
return group;
}
static String parseLoggerName(String optionKey) {
final String prefix = "log.";
final String suffix = ".level";
if (!optionKey.startsWith(prefix) || !optionKey.endsWith(suffix)) {
throw PolyglotEngineException.illegalArgument(optionKey);
}
final int start = prefix.length();
final int end = optionKey.length() - suffix.length();
return start < end ? optionKey.substring(start, end) : "";
}
@Override
public PolyglotEngineImpl getEngine() {
return this;
}
PolyglotLanguage findLanguage(PolyglotLanguageContext accessingLanguage, String languageId, String mimeType, boolean failIfNotFound, boolean allowInternalAndDependent) {
assert languageId != null || mimeType != null : Objects.toString(languageId) + ", " + Objects.toString(mimeType);
Map languageMap;
if (accessingLanguage != null) {
languageMap = accessingLanguage.getAccessibleLanguages(allowInternalAndDependent);
} else {
assert allowInternalAndDependent : "non internal access is not yet supported for instrument lookups";
languageMap = this.idToInternalLanguageInfo;
}
LanguageInfo foundLanguage = null;
if (languageId != null) {
foundLanguage = languageMap.get(languageId);
}
if (mimeType != null && foundLanguage == null) {
// we need to interpret mime types for compatibility.
foundLanguage = languageMap.get(mimeType);
if (foundLanguage == null) {
for (LanguageInfo searchLanguage : languageMap.values()) {
if (searchLanguage.getMimeTypes().contains(mimeType)) {
foundLanguage = searchLanguage;
break;
}
}
}
}
assert allowInternalAndDependent || foundLanguage == null || (!foundLanguage.isInternal() && accessingLanguage.isPolyglotEvalAllowed(languageId));
if (foundLanguage != null) {
return idToLanguage.get(foundLanguage.getId());
}
if (failIfNotFound) {
if (languageId != null) {
Set ids = new LinkedHashSet<>();
for (LanguageInfo language : languageMap.values()) {
ids.add(language.getId());
}
throw PolyglotEngineException.illegalState("No language for id " + languageId + " found. Supported languages are: " + ids);
} else {
Set mimeTypes = new LinkedHashSet<>();
for (LanguageInfo language : languageMap.values()) {
mimeTypes.addAll(language.getMimeTypes());
}
throw PolyglotEngineException.illegalState("No language for MIME type " + mimeType + " found. Supported languages are: " + mimeTypes);
}
} else {
return null;
}
}
/**
* Finds a {@link PolyglotLanguage} for a guest or host language.
*/
PolyglotLanguage findLanguage(LanguageInfo info) {
LanguageCache cache = (LanguageCache) EngineAccessor.NODES.getLanguageCache(info);
return languages[cache.getStaticIndex()];
}
private Map initializeInstruments(Map infos) {
if (hostLanguageOnly) {
return Collections.emptyMap();
}
Map instruments = new LinkedHashMap<>();
List cachedInstruments = InstrumentCache.load();
for (InstrumentCache instrumentCache : cachedInstruments) {
PolyglotInstrument instrumentImpl = new PolyglotInstrument(this, instrumentCache);
instrumentImpl.info = LANGUAGE.createInstrument(instrumentImpl, instrumentCache.getId(), instrumentCache.getName(), instrumentCache.getVersion());
Instrument instrument = impl.getAPIAccess().newInstrument(impl.instrumentDispatch, instrumentImpl);
instrumentImpl.api = instrument;
String id = instrumentImpl.cache.getId();
verifyId(id, instrumentCache.getClassName());
if (instruments.containsKey(id)) {
throw failDuplicateId(id, instrumentImpl.cache.getClassName(), instruments.get(id).cache.getClassName());
}
instruments.put(id, instrumentImpl);
infos.put(id, instrumentImpl.info);
}
return instruments;
}
private Map initializeLanguages(Map infos) {
if (hostLanguageOnly) {
return Collections.emptyMap();
}
Map polyglotLanguages = new LinkedHashMap<>();
Map cachedLanguages = new HashMap<>();
List sortedLanguages = new ArrayList<>();
for (LanguageCache lang : LanguageCache.languages().values()) {
String id = lang.getId();
if (!cachedLanguages.containsKey(id)) {
sortedLanguages.add(lang);
cachedLanguages.put(id, lang);
}
}
Collections.sort(sortedLanguages);
LinkedHashSet serializedLanguages = new LinkedHashSet<>();
Set languageReferences = new HashSet<>();
Map initErrors = new HashMap<>();
for (LanguageCache language : sortedLanguages) {
languageReferences.addAll(language.getDependentLanguages());
}
// visit / initialize internal languages first to model the implicit
// dependency of every public language to every internal language
for (LanguageCache language : sortedLanguages) {
if (language.isInternal() && !languageReferences.contains(language.getId())) {
visitLanguage(initErrors, cachedLanguages, serializedLanguages, language);
}
}
for (LanguageCache language : sortedLanguages) {
if (!language.isInternal() && !languageReferences.contains(language.getId())) {
visitLanguage(initErrors, cachedLanguages, serializedLanguages, language);
}
}
int index = 1;
for (LanguageCache cache : serializedLanguages) {
PolyglotLanguage languageImpl = createLanguage(cache, index, initErrors.get(cache.getId()));
String id = languageImpl.cache.getId();
verifyId(id, cache.getClassName());
if (polyglotLanguages.containsKey(id)) {
throw failDuplicateId(id, languageImpl.cache.getClassName(), polyglotLanguages.get(id).cache.getClassName());
}
polyglotLanguages.put(id, languageImpl);
infos.put(id, languageImpl.info);
index++;
}
return polyglotLanguages;
}
private void visitLanguage(Map initErrors, Map cachedLanguages, LinkedHashSet serializedLanguages,
LanguageCache language) {
visitLanguageImpl(new HashSet<>(), initErrors, cachedLanguages, serializedLanguages, language);
}
private void visitLanguageImpl(Set visitedIds, Map initErrors, Map cachedLanguages, LinkedHashSet serializedLanguages,
LanguageCache language) {
Set dependencies = language.getDependentLanguages();
for (String dependency : dependencies) {
LanguageCache dependentLanguage = cachedLanguages.get(dependency);
if (dependentLanguage == null) {
// dependent languages are optional
continue;
}
if (visitedIds.contains(dependency)) {
initErrors.put(language.getId(), PolyglotEngineException.illegalState("Illegal cyclic language dependency found:" + language.getId() + " -> " + dependency));
continue;
}
visitedIds.add(dependency);
visitLanguageImpl(visitedIds, initErrors, cachedLanguages, serializedLanguages, dependentLanguage);
visitedIds.remove(dependency);
}
serializedLanguages.add(language);
}
private PolyglotLanguage createLanguage(LanguageCache cache, int index, RuntimeException initError) {
PolyglotLanguage languageImpl = new PolyglotLanguage(this, cache, index, initError);
Language language = impl.getAPIAccess().newLanguage(impl.languageDispatch, languageImpl);
languageImpl.api = language;
return languageImpl;
}
private static void verifyId(String id, String className) {
if (RESERVED_IDS.contains(id)) {
throw new IllegalStateException(String.format("The language or instrument with class '%s' uses a reserved id '%s'. " +
"Resolve this by using a not reserved id for the language or instrument. " +
"The following ids are reserved %s for internal use.",
className, id, RESERVED_IDS));
} else if (id.contains(".")) {
throw new IllegalStateException(String.format("The language '%s' must not contain a period in its id '%s'. " +
"Remove all periods from the id to resolve this issue. ",
className, id));
}
}
private static RuntimeException failDuplicateId(String duplicateId, String className1, String className2) {
return new IllegalStateException(
String.format("Duplicate id '%s' specified by language or instrument with class '%s' and '%s'. " +
"Resolve this by specifying a unique id for each language or instrument.",
duplicateId, className1, className2));
}
void checkState() {
if (closed) {
throw PolyglotEngineException.illegalState("Engine is already closed.");
}
}
void addContext(PolyglotContextImpl context) {
assert Thread.holdsLock(this.lock);
ensureRuntimeInitialized(context);
if (limits != null) {
limits.validate(context.config.limits);
}
workContextReferenceQueue();
contexts.add(context.weakReference);
if (context.config.limits != null) {
EngineLimits l = limits;
if (l == null) {
limits = l = new EngineLimits(this);
}
l.initialize(context.config.limits, context);
}
if (context.config.hostClassLoader != null) {
context.engine.customHostClassLoader.invalidate();
}
singleContextValue.update(context);
}
void removeContext(PolyglotContextImpl context) {
assert Thread.holdsLock(this.lock) : "Must hold PolyglotEngineImpl.lock";
contexts.remove(context.weakReference);
workContextReferenceQueue();
}
void disposeContext(PolyglotContextImpl context) {
synchronized (this.lock) {
// should never be remove twice
assert !context.weakReference.removed;
context.weakReference.removed = true;
context.weakReference.freeSharing(context);
removeContext(context);
}
}
private void workContextReferenceQueue() {
Reference ref;
while ((ref = contextsReferenceQueue.poll()) != null) {
ContextWeakReference contextRef = (ContextWeakReference) ref;
if (!contextRef.removed) {
contextRef.freeSharing(null);
contexts.remove(contextRef);
contextRef.removed = true;
}
}
}
void reportAllLanguageContexts(ContextsListener listener) {
List allContexts;
synchronized (this.lock) {
if (contexts.isEmpty()) {
return;
}
allContexts = collectAliveContexts();
}
for (PolyglotContextImpl context : allContexts) {
listener.onContextCreated(context.creatorTruffleContext);
for (PolyglotLanguageContext lc : context.contexts) {
LanguageInfo language = lc.language.info;
if (lc.eventsEnabled && lc.env != null) {
listener.onLanguageContextCreate(context.creatorTruffleContext, language);
listener.onLanguageContextCreated(context.creatorTruffleContext, language);
if (lc.isInitialized()) {
listener.onLanguageContextInitialize(context.creatorTruffleContext, language);
listener.onLanguageContextInitialized(context.creatorTruffleContext, language);
if (lc.finalized) {
listener.onLanguageContextFinalized(context.creatorTruffleContext, language);
}
}
}
}
}
}
void reportAllContextThreads(ThreadsListener listener) {
List allContexts;
synchronized (this.lock) {
if (contexts.isEmpty()) {
return;
}
allContexts = collectAliveContexts();
}
for (PolyglotContextImpl context : allContexts) {
Thread[] threads;
synchronized (context) {
threads = context.getSeenThreads().keySet().toArray(new Thread[0]);
}
for (Thread thread : threads) {
listener.onThreadInitialized(context.creatorTruffleContext, thread);
}
}
}
PolyglotLanguage requireLanguage(String id, boolean allowInternal) {
checkState();
PolyglotLanguage language = idToLanguage.get(id);
if (language == null || (!allowInternal && !idToPublicLanguage.containsKey(id))) {
throw throwNotInstalled(id, idToLanguage.keySet());
}
return language;
}
private static RuntimeException throwNotInstalled(String id, Set allLanguages) {
String misspelledGuess = matchSpellingError(allLanguages, id);
String didYouMean = "";
if (misspelledGuess != null) {
didYouMean = String.format("Did you mean '%s'? ", misspelledGuess);
}
throw PolyglotEngineException.illegalArgument(String.format("A language with id '%s' is not installed. %sInstalled languages are: %s.", id, didYouMean, allLanguages));
}
public Language requirePublicLanguage(String id) {
checkState();
Language language = idToPublicLanguage.get(id);
if (language == null) {
throw throwNotInstalled(id, idToPublicLanguage.keySet());
}
return language;
}
private static String matchSpellingError(Set allIds, String enteredId) {
String lowerCaseEnteredId = enteredId.toLowerCase();
for (String id : allIds) {
if (id.toLowerCase().equals(lowerCaseEnteredId)) {
return id;
}
}
return null;
}
public Instrument requirePublicInstrument(String id) {
checkState();
Instrument instrument = idToPublicInstrument.get(id);
if (instrument == null) {
String misspelledGuess = matchSpellingError(idToPublicInstrument.keySet(), id);
String didYouMean = "";
if (misspelledGuess != null) {
didYouMean = String.format("Did you mean '%s'? ", misspelledGuess);
}
throw PolyglotEngineException.illegalState(String.format("An instrument with id '%s' is not installed. %sInstalled instruments are: %s.", id, didYouMean, getInstruments().keySet()));
}
return instrument;
}
@TruffleBoundary
> PolyglotLanguage getLanguage(Class languageClass, boolean fail) {
PolyglotLanguage foundLanguage = classToLanguage.get(languageClass.getName());
if (foundLanguage == null) {
if (languageClass == getHostLanguageSPI().getClass()) {
return hostLanguage;
}
if (fail) {
Set languageNames = classToLanguage.keySet();
throw PolyglotEngineException.illegalArgument("Cannot find language " + languageClass + " among " + languageNames);
}
}
return foundLanguage;
}
void ensureClosed(boolean force, boolean initiatedByContext) {
synchronized (this.lock) {
Thread currentThread = Thread.currentThread();
boolean interrupted = false;
while (closingThread != null && closingThread != currentThread) {
try {
this.lock.wait();
} catch (InterruptedException ie) {
interrupted = true;
}
}
if (interrupted) {
currentThread.interrupt();
}
if (closed) {
return;
}
workContextReferenceQueue();
List localContexts = collectAliveContexts();
/*
* Check ahead of time for open contexts to fail early and avoid closing only some
* contexts.
*/
if (!force) {
for (PolyglotContextImpl context : localContexts) {
assert !Thread.holdsLock(context);
synchronized (context) {
if (context.hasActiveOtherThread(false) && !context.state.isClosing()) {
throw PolyglotEngineException.illegalState(String.format("One of the context instances is currently executing. " +
"Set cancelIfExecuting to true to stop the execution on this thread."));
}
}
}
}
if (!initiatedByContext) {
/*
* context.cancel and context.closeAndMaybeWait close the engine if it is bound to
* the context, so if we called these methods here, it might lead to
* StackOverflowError.
*/
for (PolyglotContextImpl context : localContexts) {
assert !Thread.holdsLock(context);
assert context.parent == null;
if (force) {
context.cancel(false, null);
} else {
context.closeAndMaybeWait(false, null);
}
}
}
contexts.clear();
if (RUNTIME.onEngineClosing(this.runtimeData)) {
return;
}
closingThread = currentThread;
}
// instruments should be shut-down even if they are currently still executed
// we want to see instrument output if the process is quit while executing.
for (PolyglotInstrument instrumentImpl : idToInstrument.values()) {
instrumentImpl.ensureFinalized();
}
for (PolyglotInstrument instrumentImpl : idToInstrument.values()) {
instrumentImpl.ensureClosed();
}
synchronized (this.lock) {
closed = true;
closingThread = null;
this.lock.notifyAll();
if (!activeSystemThreads.isEmpty()) {
InstrumentSystemThread thread = activeSystemThreads.iterator().next();
throw new IllegalStateException(String.format("The engine has an alive system thread %s created by instrument %s.", thread.getName(), thread.instrumentId));
}
if (specializationStatistics != null) {
StringWriter logMessage = new StringWriter();
try (PrintWriter writer = new PrintWriter(logMessage)) {
if (!specializationStatistics.hasData()) {
writer.printf("No specialization statistics data was collected. Either no node with @%s annotations was executed or " +
"the interpreter was not compiled with -J-Dtruffle.dsl.GenerateSpecializationStatistics=true e.g as parameter to the javac tool.",
Specialization.class.getSimpleName());
} else {
specializationStatistics.printHistogram(writer);
}
}
getEngineLogger().log(Level.INFO, String.format("Specialization histogram: %n%s", logMessage.toString()));
}
RUNTIME.onEngineClosed(this.runtimeData);
Object loggers = getEngineLoggers();
if (loggers != null) {
LANGUAGE.closeEngineLoggers(loggers);
}
if (logHandler != null) {
logHandler.close();
}
polyglotHostService.notifyEngineClosed(this, force);
if (runtimeData != null) {
EngineAccessor.RUNTIME.flushCompileQueue(runtimeData);
}
getAPIAccess().engineClosed(api);
}
}
List collectAliveContexts() {
assert Thread.holdsLock(this.lock);
List localContexts = new ArrayList<>(contexts.size());
for (ContextWeakReference ref : contexts) {
PolyglotContextImpl context = ref.get();
if (context != null) {
localContexts.add(context);
} else {
contexts.remove(ref);
}
}
return localContexts;
}
public Map getInstruments() {
checkState();
return idToPublicInstrument;
}
public Map getLanguages() {
checkState();
return idToPublicLanguage;
}
public OptionDescriptors getOptions() {
checkState();
return engineOptionValues.getDescriptors();
}
public Set getCachedSources() {
checkState();
Set sources = new HashSet<>();
List activeContexts;
synchronized (lock) {
activeContexts = collectAliveContexts();
}
for (PolyglotContextImpl context : activeContexts) {
context.layer.listCachedSources(sources);
}
synchronized (lock) {
for (PolyglotSharingLayer layer : sharedLayers) {
layer.listCachedSources(sources);
}
}
return sources;
}
Collection getCallTargets() {
return INSTRUMENT.getLoadedCallTargets(instrumentationHandler);
}
OptionDescriptors getAllOptions() {
checkState();
if (allOptions == null) {
synchronized (this.lock) {
if (allOptions == null) {
List allDescriptors = new ArrayList<>();
allDescriptors.add(engineOptionValues.getDescriptors());
for (PolyglotLanguage language : idToLanguage.values()) {
allDescriptors.add(language.getOptionsInternal());
}
for (PolyglotInstrument instrument : idToInstrument.values()) {
allDescriptors.add(instrument.getAllOptionsInternal());
}
allOptions = OptionDescriptors.createUnion(allDescriptors.toArray(new OptionDescriptors[0]));
}
}
}
return allOptions;
}
PolyglotContextImpl getPreInitializedContext() {
return preInitializedContext.get();
}
void preInitialize() {
synchronized (this.lock) {
if (isSharingEnabled(null)) {
for (PolyglotSharingLayer layer : sharedLayers) {
if (!layer.isClaimed()) {
continue;
}
layer.preInitialize();
}
} else {
final String oldOption = engineOptionValues.get(PolyglotEngineOptions.PreinitializeContexts);
final String newOption = ImageBuildTimeOptions.get(ImageBuildTimeOptions.PREINITIALIZE_CONTEXTS_NAME);
final String optionValue;
if (!oldOption.isEmpty() && !newOption.isEmpty()) {
optionValue = oldOption + "," + newOption;
} else {
optionValue = oldOption + newOption;
}
final Set languageIds = new HashSet<>();
if (!optionValue.isEmpty()) {
Collections.addAll(languageIds, optionValue.split(","));
}
final Set preinitLanguages = new HashSet<>();
for (String id : languageIds) {
PolyglotLanguage language = this.idToLanguage.get(id);
if (language != null && !language.cache.isInternal()) {
preinitLanguages.add(language);
}
}
boolean allowNativeAccess = ImageBuildTimeOptions.getBoolean(ImageBuildTimeOptions.PREINITIALIZE_CONTEXTS_WITH_NATIVE_NAME);
PreinitConfig preinitConfig = allowNativeAccess ? PreinitConfig.DEFAULT_WITH_NATIVE_ACCESS : PreinitConfig.DEFAULT;
this.preInitializedContext.set(PolyglotContextImpl.preinitialize(this, preinitConfig, null, preinitLanguages, true));
}
}
}
/**
* Invoked when the context is closing to prepare an engine to be stored.
*/
void finalizeStore() {
assert Thread.holdsLock(this.lock);
this.out = null;
this.err = null;
this.in = null;
this.logHandler = null;
AbstractHostLanguageService hostLanguageService = this.host;
if (hostLanguageService != null) {
hostLanguageService.release();
}
INSTRUMENT.finalizeStoreInstrumentationHandler(instrumentationHandler);
}
@TruffleBoundary
int getAsynchronousStackDepth() {
return asynchronousStackDepth;
}
@TruffleBoundary
void setAsynchronousStackDepth(PolyglotInstrument polyglotInstrument, int depth) {
assert depth >= 0 : String.format("Wrong depth: %d", depth);
int newDepth = 0;
synchronized (this.lock) {
polyglotInstrument.requestedAsyncStackDepth = depth;
for (PolyglotInstrument instrument : idToInstrument.values()) {
if (instrument.requestedAsyncStackDepth > newDepth) {
newDepth = instrument.requestedAsyncStackDepth;
}
}
}
asynchronousStackDepth = newDepth;
}
static void cancelOrExit(PolyglotContextImpl context, List> cancelationFutures) {
cancelOrExitOrInterrupt(context, cancelationFutures, 0, null);
}
static boolean cancelOrExitOrInterrupt(PolyglotContextImpl context, List> futures, long startMillis, Duration timeout) {
try {
assert singleThreadedOrNotActive(context) : "Cancel while active is only allowed for single-threaded contexts!";
if (timeout == null) {
boolean closeCompleted = context.closeImpl(true);
assert closeCompleted : "Close was not completed!";
} else {
return waitForThreads(context, startMillis, timeout);
}
} finally {
for (Future future : futures) {
boolean timedOut = false;
try {
if (timeout != null) {
long timeElapsed = System.currentTimeMillis() - startMillis;
long timeoutMillis = timeout.toMillis();
if (timeElapsed < timeoutMillis) {
try {
future.get(timeoutMillis - timeElapsed, TimeUnit.MILLISECONDS);
} catch (TimeoutException te) {
timedOut = true;
}
} else {
timedOut = true;
}
} else {
future.get();
}
} catch (ExecutionException | InterruptedException e) {
throw CompilerDirectives.shouldNotReachHere(e);
}
if (timedOut) {
return false;
}
}
}
return true;
}
@SuppressWarnings("SynchronizationOnLocalVariableOrMethodParameter")
private static boolean singleThreadedOrNotActive(PolyglotContextImpl context) {
synchronized (context) {
return context.singleThreaded || !context.isActive(Thread.currentThread());
}
}
private static boolean waitForThreads(PolyglotContextImpl context, long startMillis, Duration timeout) {
long cancelTimeoutMillis = timeout != Duration.ZERO ? timeout.toMillis() : 0;
boolean success = true;
if (!context.waitForThreads(startMillis, cancelTimeoutMillis)) {
success = false;
}
return success;
}
@SuppressWarnings("serial")
static final class CancelExecution extends ThreadDeath {
private final Node location;
private final SourceSection sourceSection;
private final String cancelMessage;
private final boolean resourceLimit;
CancelExecution(Node location, String cancelMessage, boolean resourceLimit) {
this(location, null, cancelMessage, resourceLimit);
}
CancelExecution(SourceSection sourceSection, String cancelMessage, boolean resourceLimit) {
this(null, sourceSection, cancelMessage, resourceLimit);
}
private CancelExecution(Node location, SourceSection sourceSection, String cancelMessage, boolean resourceLimit) {
this.location = location;
this.sourceSection = sourceSection;
this.cancelMessage = cancelMessage;
this.resourceLimit = resourceLimit;
}
Node getLocation() {
return location;
}
SourceSection getSourceLocation() {
if (sourceSection != null) {
return sourceSection;
}
return location == null ? null : location.getEncapsulatingSourceSection();
}
public boolean isResourceLimit() {
return resourceLimit;
}
@Override
public String getMessage() {
if (cancelMessage == null) {
return "Execution got cancelled.";
} else {
return cancelMessage;
}
}
}
@ExportLibrary(InteropLibrary.class)
@SuppressWarnings("serial")
static final class InterruptExecution extends AbstractTruffleException {
private static final long serialVersionUID = 8652484189010224048L;
private final SourceSection sourceSection;
InterruptExecution(Node location) {
this(location, null);
}
InterruptExecution(SourceSection sourceSection) {
this(null, sourceSection);
}
private InterruptExecution(Node location, SourceSection sourceSection) {
super("Execution got interrupted.", location);
this.sourceSection = sourceSection;
}
@ExportMessage
@SuppressWarnings("static-method")
ExceptionType getExceptionType() {
return ExceptionType.INTERRUPT;
}
@ExportMessage
public boolean hasSourceLocation() {
if (sourceSection != null) {
return true;
}
Node location = getLocation();
return location != null && location.getEncapsulatingSourceSection() != null;
}
@ExportMessage(name = "getSourceLocation")
@TruffleBoundary
public SourceSection getSourceSection() throws UnsupportedMessageException {
if (sourceSection != null) {
return sourceSection;
}
Node location = getLocation();
SourceSection section = location != null ? location.getEncapsulatingSourceSection() : null;
if (section == null) {
throw UnsupportedMessageException.create();
}
return section;
}
}
private static final String DISABLE_PRIVILEGES_VALUE = ImageBuildTimeOptions.get(ImageBuildTimeOptions.DISABLE_PRIVILEGES_NAME);
private static final String[] DISABLED_PRIVILEGES = DISABLE_PRIVILEGES_VALUE.isEmpty() ? new String[0] : DISABLE_PRIVILEGES_VALUE.split(",");
// reflectively read from TruffleBaseFeature
static final boolean ALLOW_CREATE_PROCESS;
static final boolean ALLOW_ENVIRONMENT_ACCESS;
static final boolean ALLOW_IO;
static {
boolean createProcess = true;
boolean environmentAccess = true;
boolean io = true;
for (String privilege : DISABLED_PRIVILEGES) {
switch (privilege) {
case "createProcess":
createProcess = false;
break;
case "environmentAccess":
environmentAccess = false;
break;
case "io":
io = false;
break;
default:
throw new Error("Invalid privilege name for " + ImageBuildTimeOptions.DISABLE_PRIVILEGES_NAME + ": " + privilege);
}
}
ALLOW_CREATE_PROCESS = createProcess;
ALLOW_ENVIRONMENT_ACCESS = environmentAccess;
ALLOW_IO = io;
}
@SuppressWarnings({"all"})
public PolyglotContextImpl createContext(OutputStream configOut, OutputStream configErr, InputStream configIn, boolean allowHostLookup,
HostAccess hostAccess, PolyglotAccess polyglotAccess,
boolean allowNativeAccess, boolean allowCreateThread, boolean allowHostIO, boolean allowHostClassLoading,
boolean allowContextOptions, boolean allowExperimentalOptions, Predicate classFilter, Map options,
Map arguments, String[] onlyLanguagesArray, FileSystem fileSystem, Object logHandlerOrStream, boolean allowCreateProcess, ProcessHandler processHandler,
EnvironmentAccess environmentAccess, Map environment, ZoneId zone, Object limitsImpl, String currentWorkingDirectory, ClassLoader hostClassLoader,
boolean allowValueSharing, boolean useSystemExit) {
PolyglotContextImpl context;
boolean replayEvents;
boolean contextAddedToEngine;
try {
synchronized (this.lock) {
checkState();
if (boundEngine && !contexts.isEmpty()) {
throw PolyglotEngineException.illegalArgument("Automatically created engines cannot be used to create more than one context. " +
"Use Engine.newBuilder().build() to construct a new engine and pass it using Context.newBuilder().engine(engine).build().");
}
}
Set allowedLanguages = Collections.emptySet();
if (onlyLanguagesArray.length == 0) {
if (this.permittedLanguages.length != 0) {
// no restrictions set on context but restrictions set on engine
allowedLanguages = new HashSet<>();
allowedLanguages.addAll(Arrays.asList(this.permittedLanguages));
}
} else {
if (this.permittedLanguages.length == 0) {
allowedLanguages = new HashSet<>();
allowedLanguages.addAll(Arrays.asList(onlyLanguagesArray));
} else {
// restrictions set on both engine and context
EconomicSet engineLanguages = EconomicSet.create();
engineLanguages.addAll(Arrays.asList(this.permittedLanguages));
allowedLanguages = new HashSet<>();
allowedLanguages.addAll(Arrays.asList(onlyLanguagesArray));
for (String language : allowedLanguages) {
if (!engineLanguages.contains(language)) {
throw PolyglotEngineException.illegalArgument(String.format(
"The language %s permitted for the created polyglot context was not permitted by the explicit engine. " + //
"The engine only permits the use of the following languages: %s. " + //
"Use Engine.newBuilder(\"%s\").build() to construct an engine with this language permitted " + //
"or remove the language from the set of permitted languages when constructing the context in Context.newBuilder(...) to resolve this.",
language,
engineLanguages.toString(), language));
}
}
}
}
String error = getAPIAccess().validatePolyglotAccess(polyglotAccess, allowedLanguages.isEmpty() ? getLanguages().keySet() : allowedLanguages);
if (error != null) {
throw PolyglotEngineException.illegalArgument(error);
}
final FileSystem fs;
final FileSystem internalFs;
if (!ALLOW_IO) {
if (fileSystem == null) {
fileSystem = FileSystems.newNoIOFileSystem();
}
fs = fileSystem;
internalFs = fileSystem;
} else if (allowHostIO) {
fs = fileSystem != null ? fileSystem : FileSystems.newDefaultFileSystem();
internalFs = fs;
} else {
fs = FileSystems.newNoIOFileSystem();
internalFs = FileSystems.newLanguageHomeFileSystem();
}
if (currentWorkingDirectory != null) {
fs.setCurrentWorkingDirectory(fs.parsePath(currentWorkingDirectory));
internalFs.setCurrentWorkingDirectory(internalFs.parsePath(currentWorkingDirectory));
}
final OutputStream useOut;
if (configOut == null || configOut == INSTRUMENT.getOut(this.out)) {
useOut = this.out;
} else {
useOut = INSTRUMENT.createDelegatingOutput(configOut, this.out);
}
final OutputStream useErr;
if (configErr == null || configErr == INSTRUMENT.getOut(this.err)) {
useErr = this.err;
} else {
useErr = INSTRUMENT.createDelegatingOutput(configErr, this.err);
}
Handler useHandler = PolyglotLoggers.asHandler(logHandlerOrStream);
useHandler = useHandler != null ? useHandler : logHandler;
useHandler = useHandler != null ? useHandler
: PolyglotLoggers.createDefaultHandler(
configErr == null ? INSTRUMENT.getOut(this.err) : configErr);
final InputStream useIn = configIn == null ? this.in : configIn;
final ProcessHandler useProcessHandler;
if (allowCreateProcess) {
if (!ALLOW_CREATE_PROCESS) {
throw PolyglotEngineException.illegalArgument("Cannot allowCreateProcess() because the privilege is removed at image build time");
}
useProcessHandler = processHandler != null ? processHandler : getImpl().newDefaultProcessHandler();
} else {
useProcessHandler = null;
}
if (!ALLOW_ENVIRONMENT_ACCESS && environmentAccess != EnvironmentAccess.NONE) {
throw PolyglotEngineException.illegalArgument("Cannot allow EnvironmentAccess because the privilege is removed at image build time");
}
PolyglotLimits polyglotLimits = (PolyglotLimits) limitsImpl;
PolyglotContextConfig config = new PolyglotContextConfig(this, null, useOut, useErr, useIn,
allowHostLookup, polyglotAccess, allowNativeAccess, allowCreateThread, allowHostClassLoading, allowContextOptions,
allowExperimentalOptions, classFilter, arguments, allowedLanguages, options, fs, internalFs, useHandler, allowCreateProcess, useProcessHandler,
environmentAccess, environment, zone, polyglotLimits, hostClassLoader, hostAccess, allowValueSharing, useSystemExit, null, null, null, null);
context = loadPreinitializedContext(config);
replayEvents = false;
contextAddedToEngine = false;
if (context == null) {
synchronized (this.lock) {
checkState();
context = new PolyglotContextImpl(this, config);
addContext(context);
contextAddedToEngine = true;
}
} else if (context.engine == this) {
replayEvents = true;
}
} catch (Throwable t) {
throw PolyglotImpl.guestToHostException(this, t);
}
boolean hasContextBindings;
boolean hasThreadBindings;
try {
if (replayEvents) { // loaded context
/*
* There might be new instruments to run with a preinitialized context and these
* instruments might define context locals and context thread locals. The
* instruments were created during the context loading before the context was added
* to the engine's contexts set, and so the instrument creation did not update the
* context's locals and thread locals. Since the context loading needs to enter the
* context on the current thread for patching, we need to update both the context
* locals and context thread locals.
*/
synchronized (context) {
context.resizeContextLocals(this.contextLocalLocations);
context.initializeInstrumentContextLocals(context.contextLocals);
context.resizeContextThreadLocals(this.contextThreadLocalLocations);
context.initializeInstrumentContextThreadLocals();
}
} else { // is new context
try {
synchronized (context) {
context.initializeContextLocals();
context.notifyContextCreated();
}
} catch (Throwable t) {
if (contextAddedToEngine) {
disposeContext(context);
if (boundEngine) {
ensureClosed(false, false);
}
}
throw t;
}
}
hasContextBindings = EngineAccessor.INSTRUMENT.hasContextBindings(this);
hasThreadBindings = EngineAccessor.INSTRUMENT.hasThreadBindings(this);
} catch (Throwable t) {
throw PolyglotImpl.guestToHostException(context.getHostContext(), t, false);
}
if (replayEvents && (hasContextBindings || hasThreadBindings)) {
/*
* Replay events for preinitialized contexts. Events must be replayed without engine
* lock. The events to replay are the context events and also the thread initialization
* event for the current thread which was initialized for context patching.
*/
final Object[] prev;
try {
prev = enter(context);
} catch (Throwable t) {
throw PolyglotImpl.guestToHostException(context.getHostContext(), t, false);
}
try {
context.replayInstrumentationEvents();
} catch (Throwable t) {
throw PolyglotImpl.guestToHostException(context.getHostContext(), t, true);
} finally {
try {
leave(prev, context);
} catch (Throwable t) {
throw PolyglotImpl.guestToHostException(context.getHostContext(), t, false);
}
}
}
checkTruffleRuntime();
return context;
}
private PolyglotContextImpl loadPreinitializedContext(PolyglotContextConfig config) {
PolyglotContextImpl context = null;
final boolean sharing = isSharingEnabled(config);
if (sharing) {
assert preInitializedContext.get() == null : "sharing enabled with preinitialized regular context. sharing requires context preinit per layer.";
synchronized (this.lock) {
for (PolyglotSharingLayer sharedLayer : sharedLayers) {
context = sharedLayer.loadPreinitializedContext(config);
if (context != null) {
break;
}
}
}
} else {
context = preInitializedContext.getAndSet(null);
}
if (context == null) {
return null;
}
if (!getEngineOptionValues().get(PolyglotEngineOptions.UsePreInitializedContext)) {
return null;
}
if (getEngineOptionValues().get(PolyglotEngineOptions.StaticObjectStorageStrategy) != PolyglotEngineOptions.StaticObjectStorageStrategy.getDefaultValue()) {
return null;
}
FileSystems.PreInitializeContextFileSystem preInitFs = (FileSystems.PreInitializeContextFileSystem) context.config.fileSystem;
preInitFs.onLoadPreinitializedContext(config.fileSystem);
FileSystem oldFileSystem = config.fileSystem;
config.fileSystem = preInitFs;
preInitFs = (FileSystems.PreInitializeContextFileSystem) context.config.internalFileSystem;
preInitFs.onLoadPreinitializedContext(config.internalFileSystem);
FileSystem oldInternalFileSystem = config.internalFileSystem;
config.internalFileSystem = preInitFs;
boolean patchResult = false;
synchronized (this.lock) {
addContext(context);
}
try {
patchResult = context.patch(config);
} finally {
synchronized (this.lock) {
removeContext(context);
}
if (patchResult && arePreInitializedLanguagesCompatible(context, config)) {
Collection toCreate = null;
for (PolyglotInstrument instrument : idToInstrument.values()) {
if (instrument.getOptionValuesIfExists() != null) {
if (toCreate == null) {
toCreate = new HashSet<>();
}
toCreate.add(instrument);
}
}
if (toCreate != null) {
ensureInstrumentsCreated(toCreate);
}
synchronized (this.lock) {
addContext(context);
}
} else {
context.closeImpl(false);
config.fileSystem = oldFileSystem;
config.internalFileSystem = oldInternalFileSystem;
if (sharing) {
context = null;
} else {
PolyglotEngineImpl engine = new PolyglotEngineImpl(this);
ensureClosed(true, false);
synchronized (engine.lock) {
context = new PolyglotContextImpl(engine, config);
engine.addContext(context);
}
}
}
}
return context;
}
private static boolean arePreInitializedLanguagesCompatible(PolyglotContextImpl context, PolyglotContextConfig config) {
Map preInitializedLanguages = new HashMap<>();
for (PolyglotLanguageContext languageContext : context.contexts) {
if (languageContext.isInitialized() && !languageContext.language.isHost()) {
preInitializedLanguages.put(languageContext.language.getId(), languageContext);
}
}
for (String allowedLanguage : config.allowedPublicLanguages) {
PolyglotLanguageContext languageContext = preInitializedLanguages.remove(allowedLanguage);
if (languageContext != null) {
preInitializedLanguages.keySet().removeAll(languageContext.getAccessibleLanguages(true).keySet());
}
}
return preInitializedLanguages.isEmpty();
}
private void checkTruffleRuntime() {
if (getEngineOptionValues().get(PolyglotEngineOptions.WarnInterpreterOnly) && Truffle.getRuntime().getClass() == DefaultTruffleRuntime.class) {
getEngineLogger().log(Level.WARNING, "" +
"The polyglot context is using an implementation that does not support runtime compilation.\n" +
"The guest application code will therefore be executed in interpreted mode only.\n" +
"Execution only in interpreted mode will strongly impact the guest application performance.\n" +
"For more information on using GraalVM see https://www.graalvm.org/java/quickstart/.\n" +
"To disable this warning the '--engine.WarnInterpreterOnly=false' option or use the '-Dpolyglot.engine.WarnInterpreterOnly=false' system property.");
}
}
OptionValuesImpl getEngineOptionValues() {
return engineOptionValues;
}
Object getEngineLoggers() {
return engineLoggers;
}
Supplier>> getFileTypeDetectorsSupplier() {
Supplier>> res = fileTypeDetectorsSupplier;
if (res == null) {
synchronized (this.lock) {
res = fileTypeDetectorsSupplier;
if (res == null) {
Collection languageCaches = new ArrayList<>(idToLanguage.size());
for (PolyglotLanguage language : idToLanguage.values()) {
languageCaches.add(language.cache);
}
res = FileSystems.newFileTypeDetectorsSupplier(languageCaches);
fileTypeDetectorsSupplier = res;
}
}
}
return res;
}
private static final Object NO_ENTER = new Object();
@SuppressWarnings("static-method")
boolean needsEnter(PolyglotContextImpl context) {
return PolyglotFastThreadLocals.needsEnter(context);
}
Object enterIfNeeded(PolyglotContextImpl context, boolean pollSafepoint) {
CompilerAsserts.neverPartOfCompilation("not designed for compilation");
if (needsEnter(context)) {
return enterCached(context, pollSafepoint);
}
assert PolyglotFastThreadLocals.getContext(null) != null;
return NO_ENTER;
}
void leaveIfNeeded(Object prev, PolyglotContextImpl context) {
CompilerAsserts.neverPartOfCompilation("not designed for compilation");
if (prev != NO_ENTER) {
leave((Object[]) prev, context);
}
}
/**
* Use to enter contexts from paths either compiled or not. If always compiled use
* {@link #enterCached(PolyglotContextImpl, boolean)}.
*/
Object[] enter(PolyglotContextImpl context) {
if (CompilerDirectives.isPartialEvaluationConstant(this)) {
return enterCached(context, true);
} else {
return enterBoundary(context);
}
}
@TruffleBoundary
private Object[] enterBoundary(PolyglotContextImpl context) {
return enterCached(context, true);
}
/**
* Only use to enter contexts from paths that are *always* compiled otherwise use
* {@link #enter(PolyglotContextImpl)}.
*/
Object[] enterCached(PolyglotContextImpl context, boolean pollSafepoint) {
Object[] prev;
PolyglotThreadInfo info = context.getCachedThread();
boolean enterReverted = false;
if (CompilerDirectives.injectBranchProbability(CompilerDirectives.LIKELY_PROBABILITY, info.getThread() == Thread.currentThread())) {
// Volatile increment is safe if only one thread does it.
prev = info.enterInternal();
// Check again whether the cached thread info is still the same as expected
if (CompilerDirectives.injectBranchProbability(CompilerDirectives.FASTPATH_PROBABILITY, info == context.getCachedThread())) {
/*
* We are deliberately not polling a safepoint here. In case a safepoint is
* submitted cached thread info will be null and we will enter slow path, where the
* safepoint is polled.
*/
try {
info.notifyEnter(this, context);
} catch (Throwable e) {
info.leaveInternal(prev);
throw e;
}
return prev;
} else {
/*
* If we go this path and enteredCount drops to 0, the subsequent slowpath enter
* must call deactivateThread.
*/
info.leaveInternal(prev);
enterReverted = true;
}
}
/*
* Slow path. This happens when the cached thread info was set to null by context
* invalidation or submission of a safepoint or if the previous thread was not the same
* thread. The slow path acquires context lock to ensure ordering for context operations
* like close.
*/
prev = context.enterThreadChanged(true, enterReverted, pollSafepoint, false, false);
assert verifyContext(context);
return prev;
}
private static boolean verifyContext(PolyglotContextImpl context) {
PolyglotContextImpl.State localState = context.state;
return context == PolyglotFastThreadLocals.getContext(null) || localState.isInvalidOrClosed();
}
/**
* Use to leave contexts from paths either compiled or not. If always compiled use
* {@link #leaveCached(Object[], PolyglotContextImpl)}.
*/
void leave(Object[] prev, PolyglotContextImpl context) {
if (CompilerDirectives.isPartialEvaluationConstant(this)) {
leaveCached(prev, context);
} else {
leaveBoundary(prev, context);
}
}
@TruffleBoundary
private void leaveBoundary(Object[] prev, PolyglotContextImpl context) {
leaveCached(prev, context);
}
/**
* Only use to leave contexts from paths that are *always* compiled otherwise use
* {@link #leave(Object[], PolyglotContextImpl)}.
*/
void leaveCached(Object[] prev, PolyglotContextImpl context) {
assert context.state.isClosed() ||
PolyglotFastThreadLocals.getContext(null) == context : "Cannot leave context that is currently not entered. Forgot to enter or leave a context?";
boolean entered = true;
PolyglotThreadInfo info = context.getCachedThread();
if (CompilerDirectives.injectBranchProbability(CompilerDirectives.LIKELY_PROBABILITY, info.getThread() == Thread.currentThread())) {
try {
info.notifyLeave(this, context);
} finally {
info.leaveInternal(prev);
entered = false;
}
if (CompilerDirectives.injectBranchProbability(CompilerDirectives.FASTPATH_PROBABILITY, info == context.getCachedThread())) {
// fast path leave
return;
}
}
context.leaveThreadChanged(prev, true, entered, false);
}
static final class LogConfig {
final Map logLevels;
String logFile;
LogConfig() {
this.logLevels = new HashMap<>();
}
}
LocalLocation[] addContextLocals(List> newLocals) {
List aliveContexts;
LocalLocation[] newLocations;
StableLocalLocations newStableLocations;
synchronized (this.lock) {
StableLocalLocations stableLocations = this.contextLocalLocations;
int index = stableLocations.locations.length;
LocalLocation[] locationsCopy = Arrays.copyOf(stableLocations.locations, stableLocations.locations.length + newLocals.size());
for (AbstractContextLocal newLocal : newLocals) {
locationsCopy[index] = newLocal.createLocation(index);
newLocal.initializeLocation(locationsCopy[index]);
index++;
}
/*
* We pick up the alive contexts before we set the new context locals. So all new
* contexts from now on will already use the initialized locals.
*/
aliveContexts = collectAliveContexts();
this.contextLocalLocations = newStableLocations = new StableLocalLocations(locationsCopy);
stableLocations.assumption.invalidate("Context local added");
newLocations = Arrays.copyOfRange(locationsCopy, stableLocations.locations.length, index);
}
for (PolyglotContextImpl context : aliveContexts) {
context.resizeLocals(newStableLocations);
}
return newLocations;
}
LocalLocation[] addContextThreadLocals(List> newLocals) {
List aliveContexts;
LocalLocation[] newLocations;
StableLocalLocations newStableLocations;
synchronized (this.lock) {
StableLocalLocations stableLocations = this.contextThreadLocalLocations;
int index = stableLocations.locations.length;
LocalLocation[] locationsCopy = Arrays.copyOf(stableLocations.locations, stableLocations.locations.length + newLocals.size());
for (AbstractContextThreadLocal newLocal : newLocals) {
locationsCopy[index] = newLocal.createLocation(index);
newLocal.initializeLocation(locationsCopy[index]);
index++;
}
/*
* We pick up the alive contexts before we set the new context locals. So all new
* contexts from now on will already use the initialized locals.
*/
aliveContexts = collectAliveContexts();
this.contextThreadLocalLocations = newStableLocations = new StableLocalLocations(locationsCopy);
stableLocations.assumption.invalidate("Context thread local added");
newLocations = Arrays.copyOfRange(locationsCopy, stableLocations.locations.length, index);
}
for (PolyglotContextImpl context : aliveContexts) {
context.resizeThreadLocals(newStableLocations);
}
return newLocations;
}
void onVMShutdown() {
if (DEBUG_MISSING_CLOSE) {
PrintStream log = System.out;
log.println("Missing close on vm shutdown: ");
log.print(" InitializedLanguages:");
synchronized (lock) {
for (PolyglotContextImpl context : collectAliveContexts()) {
for (PolyglotLanguageContext langContext : context.contexts) {
if (langContext.env != null) {
log.print(langContext.language.getId());
log.print(", ");
}
}
}
}
log.println();
createdLocation.printStackTrace();
}
/*
* In the event of VM shutdown, the engine is not closed and active instruments on it are
* not disposed. Without closing the contexts on the engine, which is not possible during
* shutdown, because it could delay or block the shutdown, closing the engine could lead to
* unexpected errors. Therefore, we let the engine die with the VM and just notify the
* instruments by calling TruffleInstrument#onFinalize.
*/
for (PolyglotInstrument instrumentImpl : idToInstrument.values()) {
try {
instrumentImpl.ensureFinalized();
} catch (Throwable e) {
getEngineLogger().log(Level.WARNING, "Instrument " + instrumentImpl.getName() + " threw an exception during onFinalize.", e);
}
}
synchronized (this.lock) {
if (logHandler != null) {
logHandler.flush();
}
}
}
void addSystemThread(InstrumentSystemThread thread) {
synchronized (lock) {
if (!closed) {
activeSystemThreads.add(thread);
}
}
}
void removeSystemThread(InstrumentSystemThread thread) {
synchronized (lock) {
activeSystemThreads.remove(thread);
}
}
static final class StableLocalLocations {
@CompilationFinal(dimensions = 1) final LocalLocation[] locations;
final Assumption assumption = Truffle.getRuntime().createAssumption();
StableLocalLocations(LocalLocation[] locations) {
this.locations = locations;
}
}
private static volatile PolyglotEngineImpl fallbackEngine;
static PolyglotEngineImpl getFallbackEngine() {
if (fallbackEngine == null) {
synchronized (PolyglotImpl.class) {
if (fallbackEngine == null) {
PolyglotImpl polyglot = PolyglotImpl.getInstance();
TruffleLanguage hostLanguage = polyglot.createHostLanguage(polyglot.createHostAccess());
fallbackEngine = PolyglotImpl.getInstance().createDefaultEngine(hostLanguage);
}
}
}
return fallbackEngine;
}
/*
* Invoked by TruffleBaseFeature to make sure the fallback engine is not contained in the image.
*/
static void resetFallbackEngine() {
PolyglotEngineImpl engineToClose = null;
synchronized (PolyglotImpl.class) {
if (fallbackEngine != null) {
engineToClose = fallbackEngine;
fallbackEngine = null;
}
}
if (engineToClose != null) {
engineToClose.ensureClosed(false, false);
}
}
@SuppressWarnings("static-method")
String getVersion() {
String version = HomeFinder.getInstance().getVersion();
if (version.equals("snapshot")) {
return "Development Build";
} else {
return version;
}
}
}
