org.pkl.thirdparty.truffle.polyglot.OtherContextGuestObject Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of pkl-config-java-all Show documentation
Show all versions of pkl-config-java-all Show documentation
Shaded fat Jar for pkl-config-java, a Java config library based on the Pkl config language.
/*
* Copyright (c) 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
* 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 org.pkl.thirdparty.truffle.polyglot;
import org.pkl.thirdparty.truffle.api.CompilerDirectives.TruffleBoundary;
import org.pkl.thirdparty.truffle.api.dsl.Bind;
import org.pkl.thirdparty.truffle.api.dsl.Cached;
import org.pkl.thirdparty.truffle.api.dsl.ImportStatic;
import org.pkl.thirdparty.truffle.api.dsl.Specialization;
import org.pkl.thirdparty.truffle.api.exception.AbstractTruffleException;
import org.pkl.thirdparty.truffle.api.interop.InteropLibrary;
import org.pkl.thirdparty.truffle.api.interop.TruffleObject;
import org.pkl.thirdparty.truffle.api.library.CachedLibrary;
import org.pkl.thirdparty.truffle.api.library.ExportLibrary;
import org.pkl.thirdparty.truffle.api.library.ExportMessage;
import org.pkl.thirdparty.truffle.api.library.Message;
import org.pkl.thirdparty.truffle.api.library.ReflectionLibrary;
import org.pkl.thirdparty.truffle.api.nodes.ExplodeLoop;
import org.pkl.thirdparty.truffle.api.nodes.Node;
import org.pkl.thirdparty.truffle.api.nodes.RootNode;
import org.pkl.thirdparty.truffle.api.profiles.InlinedBranchProfile;
/**
* A guest TruffleObject that has been passed from one context to another.
*/
@ExportLibrary(ReflectionLibrary.class)
final class OtherContextGuestObject implements TruffleObject {
static final Object OTHER_VALUE = new Object();
static final ReflectionLibrary OTHER_VALUE_UNCACHED = ReflectionLibrary.getFactory().getUncached(OTHER_VALUE);
final PolyglotContextImpl receiverContext;
final Object delegate;
final PolyglotContextImpl delegateContext;
OtherContextGuestObject(PolyglotContextImpl receiverContext, Object delegate, PolyglotContextImpl delegateContext) {
assert !(delegate instanceof OtherContextGuestObject) : "recursive host foreign value found";
assert receiverContext != null && delegateContext != null : "Must have associated contexts.";
assert receiverContext != delegateContext : "no need for foreign value if contexts match";
this.delegate = delegate;
this.receiverContext = receiverContext;
this.delegateContext = delegateContext;
}
static final int CACHE_LIMIT = 5;
static boolean canCache(PolyglotSharingLayer cachedLayer, PolyglotContextImpl context0, PolyglotContextImpl context1) {
/*
* We can only cache if both layers are identical. Otherwise we might cause invalid sharing
* across layers.
*/
return cachedLayer != null && cachedLayer.isClaimed() && cachedLayer.shared == context0.layer.shared && cachedLayer.shared == context1.layer.shared;
}
static PolyglotSharingLayer getCachedLayer(Node library) {
RootNode root = library.getRootNode();
if (root == null) {
// cannot cache if not adopted
return null;
}
return ((PolyglotSharingLayer) EngineAccessor.NODES.getSharingLayer(root));
}
@ExportMessage
@ImportStatic(OtherContextGuestObject.class)
static class Send {
@Specialization(guards = "canCache(cachedLayer, receiver.receiverContext, receiver.delegateContext)", limit = "1")
static Object doCached(OtherContextGuestObject receiver, Message message, Object[] args,
@Bind("this") Node node,
@SuppressWarnings("unused") @CachedLibrary("receiver") ReflectionLibrary receiverLibrary,
@Cached(value = "getCachedLayer(receiverLibrary)") PolyglotSharingLayer cachedLayer,
@CachedLibrary(limit = "CACHE_LIMIT") ReflectionLibrary delegateLibrary,
@Cached InlinedBranchProfile seenOther,
@Cached InlinedBranchProfile seenError) throws Exception {
assert cachedLayer != null;
return sendImpl(node, cachedLayer, receiver.delegate, message, args, receiver.receiverContext, receiver.delegateContext, delegateLibrary, seenOther, seenError);
}
@TruffleBoundary
@Specialization(replaces = "doCached")
static Object doSlowPath(OtherContextGuestObject receiver, Message message, Object[] args, @Bind("this") Node node) throws Exception {
return sendImpl(node, receiver.receiverContext.layer, receiver.delegate, message, args, receiver.receiverContext,
receiver.delegateContext,
ReflectionLibrary.getUncached(receiver.delegate),
InlinedBranchProfile.getUncached(), InlinedBranchProfile.getUncached());
}
}
private static final Message IDENTICAL = Message.resolve(InteropLibrary.class, "isIdentical");
static Object sendImpl(Node node, PolyglotSharingLayer layer, Object receiver, Message message, Object[] args, PolyglotContextImpl receiverContext,
PolyglotContextImpl delegateContext,
ReflectionLibrary delegateLibrary,
InlinedBranchProfile seenOther,
InlinedBranchProfile seenError) throws Exception {
if (message.getLibraryClass() == InteropLibrary.class) {
try {
Object[] prev = layer.engine.enter(delegateContext);
try {
Object returnValue;
Object[] migratedArgs = migrateArgs(message, args, receiverContext, delegateContext);
if ((message == IDENTICAL) && migratedArgs[0] instanceof OtherContextGuestObject) {
OtherContextGuestObject foreignCompare = (OtherContextGuestObject) migratedArgs[0];
/*
* It is guaranteed at this point that host foreign values with the same
* context are already unboxed.
*/
assert foreignCompare.delegateContext != delegateContext;
/*
* If two values of different contexts are compared with each other we end
* up in an endless recursion as each invocation performs argument boxing to
* hosted values which in turn will call isIdenticalOrUndefined of the other
* value.
*/
returnValue = Boolean.FALSE;
} else {
returnValue = delegateLibrary.send(receiver, message, migratedArgs);
}
return migrateReturn(returnValue, receiverContext, delegateContext);
} catch (Throwable e) {
seenError.enter(node);
throw migrateException(receiverContext, e, delegateContext);
} finally {
layer.engine.leave(prev, delegateContext);
}
} catch (Throwable t) {
seenError.enter(node);
throw toHostOrInnerContextBoundaryException(receiverContext, t, delegateContext);
}
} else {
seenOther.enter(node);
return fallbackSend(message, args);
}
}
@SuppressWarnings("unchecked")
@TruffleBoundary
static RuntimeException migrateException(PolyglotContextImpl receiverContext, Throwable e, PolyglotContextImpl valueContext) throws T {
if (e instanceof OtherContextException) {
OtherContextException other = (OtherContextException) e;
if (other.receiverContext == receiverContext && other.delegateContext == valueContext) {
throw other;
} else {
throw new OtherContextException(receiverContext, other.delegate, other.delegateContext);
}
} else if (InteropLibrary.getUncached().isException(e)) {
if (e instanceof AbstractTruffleException) {
throw new OtherContextException(receiverContext, (AbstractTruffleException) e, valueContext);
} else {
throw new OtherContextException(receiverContext, (Exception) e, valueContext);
}
} else {
throw (T) e;
}
}
@SuppressWarnings("unchecked")
@TruffleBoundary
static RuntimeException toHostOrInnerContextBoundaryException(PolyglotContextImpl receiverContext, Throwable e, PolyglotContextImpl delegateContext) throws T {
if (e instanceof PolyglotEngineException || e instanceof PolyglotEngineImpl.CancelExecution || e instanceof PolyglotContextImpl.ExitException) {
try {
if (e instanceof PolyglotEngineImpl.CancelExecution) {
if (delegateContext.parent != null) {
PolyglotContextImpl.State receiverContextState = receiverContext.state;
if (!receiverContextState.isCancelling() && receiverContextState != PolyglotContextImpl.State.CLOSED_CANCELLED) {
delegateContext.runOnCancelled();
throw new IllegalStateException("Context cancel exception of inner context leaks outside to a non-cancelled context!");
}
throw (PolyglotEngineImpl.CancelExecution) e;
} else {
throw PolyglotImpl.guestToHostException(delegateContext.getHostContext(), e, false);
}
} else if (e instanceof PolyglotContextImpl.ExitException) {
if (delegateContext.parent != null) {
PolyglotContextImpl.State receiverContextState = receiverContext.state;
if (!receiverContextState.isExiting() && receiverContextState != PolyglotContextImpl.State.CLOSED_EXITED) {
delegateContext.runOnExited(((PolyglotContextImpl.ExitException) e).getExitCode());
throw new IllegalStateException("Context exit exception of inner context leaks outside to a non-exited context!");
}
throw (PolyglotContextImpl.ExitException) e;
} else {
throw PolyglotImpl.guestToHostException(delegateContext.getHostContext(), e, false);
}
} else {
if (delegateContext.parent != null && e instanceof PolyglotEngineException && ((PolyglotEngineException) e).closedException) {
PolyglotContextImpl.State enclosingState = receiverContext != null ? receiverContext.state : PolyglotContextImpl.State.DEFAULT;
boolean enclosingDisposing = receiverContext != null && receiverContext.disposing;
if (enclosingState != PolyglotContextImpl.State.CLOSED && !enclosingDisposing) {
delegateContext.runOnClosed();
throw new IllegalStateException("Context close exception of inner context leaks outside to a non-closed context!");
}
}
// [GR-35549] Truffle isolate enters the guest context as result of
// delegateLibrary#send(). Exceptions thrown by enter are wrapped as
// PolyglotEngineException. We need to unwrap them and throw as host exception.
throw PolyglotImpl.engineToLanguageException(e);
}
} catch (Throwable ex) {
if (delegateContext.parent != null) {
/*
* Note that the parent context might be different from the receiverContext. In
* any case, if the delegateContext has parent, we don't wrap the resulting
* exception with HostException.
*/
throw ex;
} else {
throw receiverContext.engine.host.toHostException(receiverContext.getHostContextImpl(), ex);
}
}
} else {
throw (T) e;
}
}
@TruffleBoundary
private static Object fallbackSend(Message message, Object[] args) throws Exception {
/*
* This is a convenient way to trigger the default implementation for all other libraries.
* We do not want to redirect anything other than interop.
*/
return OTHER_VALUE_UNCACHED.send(OTHER_VALUE, message, args);
}
private static Object migrateReturn(Object arg, PolyglotContextImpl receiverContext, PolyglotContextImpl delegateContext) {
if (arg instanceof TruffleObject) {
return receiverContext.migrateValue(arg, delegateContext);
} else {
assert InteropLibrary.isValidProtocolValue(arg) : "unexpected interop primitive";
return arg;
}
}
private static Object migrateArg(Object arg, PolyglotContextImpl receiverContext, PolyglotContextImpl delegateContext) {
if (arg instanceof TruffleObject) {
return delegateContext.migrateValue(arg, receiverContext);
} else if (arg instanceof Object[]) {
return migrateArgs(null, (Object[]) arg, receiverContext, delegateContext);
} else if (arg instanceof InteropLibrary) {
return InteropLibrary.getUncached();
} else {
assert InteropLibrary.isValidProtocolValue(arg);
return arg;
}
}
private static Object[] migrateArgs(Message message, Object[] args, PolyglotContextImpl receiverContext, PolyglotContextImpl delegateContext) {
if (message != null) {
return migrateArgsExplode(message, args, receiverContext, delegateContext);
} else {
Object[] newArgs = new Object[args.length];
for (int i = 0; i < args.length; i++) {
newArgs[i] = migrateArg(args[i], receiverContext, delegateContext);
}
return newArgs;
}
}
@ExplodeLoop
private static Object[] migrateArgsExplode(Message message, Object[] args, PolyglotContextImpl receiverContext, PolyglotContextImpl delegateContext) {
int length = message.getParameterCount();
Object[] newArgs = new Object[length - 1];
for (int i = 0; i < length - 1; i++) {
newArgs[i] = migrateArg(args[i], receiverContext, delegateContext);
}
return newArgs;
}
@Override
public String toString() {
return "OtherContextGuestObject[" + //
"targetContext=0x" + Integer.toHexString(System.identityHashCode(receiverContext)) + //
", delegate=(" + delegate.getClass().getSimpleName() + "(0x" + Integer.toHexString(System.identityHashCode(delegate)) + ")" + //
", delegateContext=0x" + Integer.toHexString(System.identityHashCode(delegateContext));
}
@SuppressWarnings("serial")
@ExportLibrary(ReflectionLibrary.class)
static class OtherContextException extends AbstractTruffleException {
final PolyglotContextImpl receiverContext;
final Exception delegate;
final PolyglotContextImpl delegateContext;
OtherContextException(PolyglotContextImpl receiverContext, AbstractTruffleException delegate, PolyglotContextImpl delegateContext) {
super(delegate);
assert !(delegate instanceof OtherContextException) : "recursive host foreign value found";
assert receiverContext != null && delegateContext != null : "Must have associated contexts.";
assert receiverContext != delegateContext : "no need for foreign value if contexts match";
this.delegate = delegate;
this.receiverContext = receiverContext;
this.delegateContext = delegateContext;
}
@TruffleBoundary
OtherContextException(PolyglotContextImpl thisContext, Exception delegate, PolyglotContextImpl delegateContext) {
super(delegate.getMessage());
assert !(delegate instanceof OtherContextException) : "recursive host foreign value found";
assert thisContext != null && delegateContext != null : "Must have associated contexts.";
assert thisContext != delegateContext : "no need for foreign value if contexts match";
this.delegate = delegate;
this.receiverContext = thisContext;
this.delegateContext = delegateContext;
}
@ExportMessage
@ImportStatic(OtherContextGuestObject.class)
static class Send {
@Specialization(guards = "canCache(cachedLayer, receiver.receiverContext, receiver.delegateContext)", limit = "1")
static Object doCached(OtherContextException receiver, Message message, Object[] args,
@Bind("this") Node node,
@SuppressWarnings("unused") @CachedLibrary("receiver") ReflectionLibrary receiverLibrary,
@Cached(value = "getCachedLayer(receiverLibrary)") PolyglotSharingLayer cachedLayer,
@CachedLibrary(limit = "CACHE_LIMIT") ReflectionLibrary delegateLibrary,
@Cached InlinedBranchProfile seenOther,
@Cached InlinedBranchProfile seenError) throws Exception {
assert cachedLayer != null;
return sendImpl(node, cachedLayer, receiver.delegate, message, args, receiver.receiverContext, receiver.delegateContext, delegateLibrary, seenOther, seenError);
}
@TruffleBoundary
@Specialization(replaces = "doCached")
static Object doSlowPath(OtherContextException receiver, Message message, Object[] args,
@Bind("this") Node node) throws Exception {
return sendImpl(node, receiver.receiverContext.layer, receiver.delegate, message, args, receiver.receiverContext,
receiver.delegateContext,
ReflectionLibrary.getUncached(receiver.delegate),
InlinedBranchProfile.getUncached(), InlinedBranchProfile.getUncached());
}
}
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy