com.oracle.graal.python.nodes.bytecode.SequenceFromStackNode Maven / Gradle / Ivy
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package com.oracle.graal.python.nodes.bytecode;
import java.lang.reflect.Array;
import com.oracle.graal.python.PythonLanguage;
import com.oracle.graal.python.builtins.objects.list.PList.ListOrigin;
import com.oracle.graal.python.nodes.PNodeWithContext;
import com.oracle.graal.python.runtime.PythonContext;
import com.oracle.graal.python.runtime.PythonOptions;
import com.oracle.graal.python.runtime.sequence.storage.BasicSequenceStorage;
import com.oracle.graal.python.runtime.sequence.storage.BoolSequenceStorage;
import com.oracle.graal.python.runtime.sequence.storage.ByteSequenceStorage;
import com.oracle.graal.python.runtime.sequence.storage.DoubleSequenceStorage;
import com.oracle.graal.python.runtime.sequence.storage.EmptySequenceStorage;
import com.oracle.graal.python.runtime.sequence.storage.IntSequenceStorage;
import com.oracle.graal.python.runtime.sequence.storage.LongSequenceStorage;
import com.oracle.graal.python.runtime.sequence.storage.ObjectSequenceStorage;
import com.oracle.graal.python.runtime.sequence.storage.SequenceStorage;
import com.oracle.graal.python.runtime.sequence.storage.SequenceStorageFactory;
import com.oracle.truffle.api.CompilerAsserts;
import com.oracle.truffle.api.CompilerDirectives;
import com.oracle.truffle.api.CompilerDirectives.CompilationFinal;
import com.oracle.truffle.api.TruffleLogger;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.frame.Frame;
import com.oracle.truffle.api.frame.VirtualFrame;
import com.oracle.truffle.api.nodes.ExplodeLoop;
import com.oracle.truffle.api.nodes.UnexpectedResultException;
import com.oracle.truffle.api.source.SourceSection;
abstract class SequenceFromStackNode extends PNodeWithContext {
@CompilationFinal protected final int length;
@CompilationFinal protected SequenceStorage.ListStorageType type = SequenceStorage.ListStorageType.Uninitialized;
SequenceFromStackNode(int length) {
this.length = length;
}
@ExplodeLoop
protected SequenceStorage createSequenceStorageForDirect(VirtualFrame frame, int start, int stop) {
CompilerAsserts.partialEvaluationConstant(start);
CompilerAsserts.partialEvaluationConstant(stop);
SequenceStorage storage;
if (type == SequenceStorage.ListStorageType.Uninitialized) {
CompilerDirectives.transferToInterpreterAndInvalidate();
try {
Object[] elements = new Object[length];
for (int j = 0, i = start; i < stop; i++, j++) {
elements[j] = frame.getObject(i);
frame.setObject(i, null);
}
storage = SequenceStorageFactory.createStorage(elements);
type = storage.getElementType();
} catch (Throwable t) {
// we do not want to repeatedly deopt if a value execution
// always raises, for example
type = SequenceStorage.ListStorageType.Generic;
throw t;
}
} else {
int j = 0;
Object array = null;
try {
switch (type) {
// Ugh. We want to use primitive arrays during unpacking, so
// we cannot dispatch generically here.
case Empty: {
assert length == 0;
storage = EmptySequenceStorage.INSTANCE;
break;
}
case Boolean: {
boolean[] elements = new boolean[getCapacityEstimate()];
array = elements;
for (int i = start; i < stop; i++, j++) {
elements[j] = castBoolean(frame.getObject(i));
frame.setObject(i, null);
}
storage = new BoolSequenceStorage(elements, length);
break;
}
case Byte: {
byte[] elements = new byte[getCapacityEstimate()];
array = elements;
for (int i = start; i < stop; i++, j++) {
int element = castInt(frame.getObject(i));
if (element <= Byte.MAX_VALUE && element >= Byte.MIN_VALUE) {
elements[j] = (byte) element;
frame.setObject(i, null);
} else {
CompilerDirectives.transferToInterpreterAndInvalidate();
throw new UnexpectedResultException(element);
}
}
storage = new ByteSequenceStorage(elements, length);
break;
}
case Int: {
int[] elements = new int[getCapacityEstimate()];
array = elements;
for (int i = start; i < stop; i++, j++) {
elements[j] = castInt(frame.getObject(i));
frame.setObject(i, null);
}
storage = new IntSequenceStorage(elements, length);
break;
}
case Long: {
long[] elements = new long[getCapacityEstimate()];
array = elements;
for (int i = start; i < stop; i++, j++) {
elements[j] = castLong(frame.getObject(i));
frame.setObject(i, null);
}
storage = new LongSequenceStorage(elements, length);
break;
}
case Double: {
double[] elements = new double[getCapacityEstimate()];
array = elements;
for (int i = start; i < stop; i++, j++) {
elements[j] = castDouble(frame.getObject(i));
frame.setObject(i, null);
}
storage = new DoubleSequenceStorage(elements, length);
break;
}
case Generic: {
Object[] elements = new Object[getCapacityEstimate()];
for (int i = start; i < stop; i++, j++) {
elements[j] = frame.getObject(i);
frame.setObject(i, null);
}
storage = new ObjectSequenceStorage(elements, length);
break;
}
default:
CompilerDirectives.transferToInterpreterAndInvalidate();
throw new RuntimeException("unexpected state");
}
} catch (UnexpectedResultException e) {
CompilerDirectives.transferToInterpreterAndInvalidate();
storage = genericFallback(frame, array, start, stop, j, e.getResult());
}
}
return storage;
}
private SequenceStorage genericFallback(VirtualFrame frame, Object array, int start, int stop, int count, Object result) {
type = SequenceStorage.ListStorageType.Generic;
Object[] elements = new Object[getCapacityEstimate()];
int j = 0;
for (; j < count; j++) {
elements[j] = Array.get(array, j);
}
elements[j++] = result;
for (int i = start + count + 1; i < stop; i++, j++) {
elements[j] = frame.getObject(i);
frame.setObject(i, null);
}
return new ObjectSequenceStorage(elements, length);
}
private static int castInt(Object o) throws UnexpectedResultException {
if (o instanceof Integer) {
return (int) o;
}
throw new UnexpectedResultException(o);
}
private static long castLong(Object o) throws UnexpectedResultException {
if (o instanceof Long) {
return (long) o;
}
throw new UnexpectedResultException(o);
}
private static double castDouble(Object o) throws UnexpectedResultException {
if (o instanceof Double) {
return (double) o;
}
throw new UnexpectedResultException(o);
}
private static boolean castBoolean(Object o) throws UnexpectedResultException {
if (o instanceof Boolean) {
return (boolean) o;
}
throw new UnexpectedResultException(o);
}
protected abstract int getCapacityEstimate();
public abstract static class ListFromStackNode extends SequenceFromStackNode implements ListOrigin {
private static final TruffleLogger LOGGER = PythonLanguage.getLogger(ListFromStackNode.class);
public ListFromStackNode(int length) {
super(length);
this.initialCapacity = new SizeEstimate(length);
}
public abstract SequenceStorage execute(Frame virtualFrame, int start, int stop);
@Specialization
SequenceStorage doIt(VirtualFrame virtualFrame, int start, int stop) {
return createSequenceStorageForDirect(virtualFrame, start, stop);
}
private final SizeEstimate initialCapacity;
@Override
protected int getCapacityEstimate() {
return initialCapacity.estimate();
}
@Override
public SourceSection getSourceSection() {
return null;
}
@Override
public void reportUpdatedCapacity(BasicSequenceStorage newStore) {
if (CompilerDirectives.inInterpreter()) {
if (PythonContext.get(this).getOption(PythonOptions.OverallocateLiteralLists)) {
if (newStore.getCapacity() > initialCapacity.estimate()) {
initialCapacity.updateFrom(newStore.getCapacity());
LOGGER.finest(() -> {
SourceSection encapsulatingSourceSection = getEncapsulatingSourceSection();
String sourceSection = encapsulatingSourceSection == null ? "" : encapsulatingSourceSection.toString();
return String.format("Updating list size estimate at %s. Observed capacity: %d, new estimate: %d", sourceSection, newStore.getCapacity(),
initialCapacity.estimate());
});
}
if (newStore.getElementType().generalizesFrom(type)) {
type = newStore.getElementType();
LOGGER.finest(() -> {
SourceSection encapsulatingSourceSection = getEncapsulatingSourceSection();
String sourceSection = encapsulatingSourceSection == null ? "" : encapsulatingSourceSection.toString();
return String.format("Updating list type estimate at %s. New type: %s", sourceSection, type.name());
});
}
}
}
// n.b.: it's ok that this races when the code is already being compiled
// or if we're running on multiple threads. if the update isn't seen, we
// are not incorrect, we just don't benefit from the optimization
}
}
public abstract static class TupleFromStackNode extends SequenceFromStackNode {
public TupleFromStackNode(int length) {
super(length);
}
public abstract SequenceStorage execute(Frame virtualFrame, int start, int stop);
@Specialization
SequenceStorage doIt(VirtualFrame virtualFrame, int start, int stop) {
return createSequenceStorageForDirect(virtualFrame, start, stop);
}
@Override
protected int getCapacityEstimate() {
return length;
}
}
}
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