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Diffstat (limited to 'src/jdk/nashorn/internal/runtime/SpillProperty.java')
-rw-r--r--src/jdk/nashorn/internal/runtime/SpillProperty.java222
1 files changed, 0 insertions, 222 deletions
diff --git a/src/jdk/nashorn/internal/runtime/SpillProperty.java b/src/jdk/nashorn/internal/runtime/SpillProperty.java
deleted file mode 100644
index 9019b560..00000000
--- a/src/jdk/nashorn/internal/runtime/SpillProperty.java
+++ /dev/null
@@ -1,222 +0,0 @@
-/*
- * Copyright (c) 2010-2014, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-package jdk.nashorn.internal.runtime;
-
-import static jdk.nashorn.internal.lookup.Lookup.MH;
-
-import java.lang.invoke.MethodHandle;
-import java.lang.invoke.MethodHandles;
-
-/**
- * Spill property
- */
-public class SpillProperty extends AccessorProperty {
- private static final long serialVersionUID = 3028496245198669460L;
-
- private static final MethodHandles.Lookup LOOKUP = MethodHandles.lookup();
-
- private static final MethodHandle PARRAY_GETTER = MH.asType(MH.getter(LOOKUP, ScriptObject.class, "primitiveSpill", long[].class), MH.type(long[].class, Object.class));
- private static final MethodHandle OARRAY_GETTER = MH.asType(MH.getter(LOOKUP, ScriptObject.class, "objectSpill", Object[].class), MH.type(Object[].class, Object.class));
-
- private static final MethodHandle OBJECT_GETTER = MH.filterArguments(MH.arrayElementGetter(Object[].class), 0, OARRAY_GETTER);
- private static final MethodHandle PRIMITIVE_GETTER = MH.filterArguments(MH.arrayElementGetter(long[].class), 0, PARRAY_GETTER);
- private static final MethodHandle OBJECT_SETTER = MH.filterArguments(MH.arrayElementSetter(Object[].class), 0, OARRAY_GETTER);
- private static final MethodHandle PRIMITIVE_SETTER = MH.filterArguments(MH.arrayElementSetter(long[].class), 0, PARRAY_GETTER);
-
- private static class Accessors {
- private MethodHandle objectGetter;
- private MethodHandle objectSetter;
- private MethodHandle primitiveGetter;
- private MethodHandle primitiveSetter;
-
- private final int slot;
- private final MethodHandle ensureSpillSize;
-
- private static Accessors ACCESSOR_CACHE[] = new Accessors[512];
-
- //private static final Map<Integer, Reference<Accessors>> ACCESSOR_CACHE = Collections.synchronizedMap(new WeakHashMap<Integer, Reference<Accessors>>());
-
- Accessors(final int slot) {
- assert slot >= 0;
- this.slot = slot;
- this.ensureSpillSize = MH.asType(MH.insertArguments(ScriptObject.ENSURE_SPILL_SIZE, 1, slot), MH.type(Object.class, Object.class));
- }
-
- private static void ensure(final int slot) {
- int len = ACCESSOR_CACHE.length;
- if (slot >= len) {
- do {
- len *= 2;
- } while (slot >= len);
- final Accessors newCache[] = new Accessors[len];
- System.arraycopy(ACCESSOR_CACHE, 0, newCache, 0, ACCESSOR_CACHE.length);
- ACCESSOR_CACHE = newCache;
- }
- }
-
- static MethodHandle getCached(final int slot, final boolean isPrimitive, final boolean isGetter) {
- //Reference<Accessors> ref = ACCESSOR_CACHE.get(slot);
- ensure(slot);
- Accessors acc = ACCESSOR_CACHE[slot];
- if (acc == null) {
- acc = new Accessors(slot);
- ACCESSOR_CACHE[slot] = acc;
- }
-
- return acc.getOrCreate(isPrimitive, isGetter);
- }
-
- private static MethodHandle primordial(final boolean isPrimitive, final boolean isGetter) {
- if (isPrimitive) {
- return isGetter ? PRIMITIVE_GETTER : PRIMITIVE_SETTER;
- }
- return isGetter ? OBJECT_GETTER : OBJECT_SETTER;
- }
-
- MethodHandle getOrCreate(final boolean isPrimitive, final boolean isGetter) {
- MethodHandle accessor;
-
- accessor = getInner(isPrimitive, isGetter);
- if (accessor != null) {
- return accessor;
- }
-
- accessor = primordial(isPrimitive, isGetter);
- accessor = MH.insertArguments(accessor, 1, slot);
- if (!isGetter) {
- accessor = MH.filterArguments(accessor, 0, ensureSpillSize);
- }
- setInner(isPrimitive, isGetter, accessor);
-
- return accessor;
- }
-
- void setInner(final boolean isPrimitive, final boolean isGetter, final MethodHandle mh) {
- if (isPrimitive) {
- if (isGetter) {
- primitiveGetter = mh;
- } else {
- primitiveSetter = mh;
- }
- } else {
- if (isGetter) {
- objectGetter = mh;
- } else {
- objectSetter = mh;
- }
- }
- }
-
- MethodHandle getInner(final boolean isPrimitive, final boolean isGetter) {
- if (isPrimitive) {
- return isGetter ? primitiveGetter : primitiveSetter;
- }
- return isGetter ? objectGetter : objectSetter;
- }
- }
-
- private static MethodHandle primitiveGetter(final int slot, final int flags) {
- return (flags & DUAL_FIELDS) == DUAL_FIELDS ? Accessors.getCached(slot, true, true) : null;
- }
- private static MethodHandle primitiveSetter(final int slot, final int flags) {
- return (flags & DUAL_FIELDS) == DUAL_FIELDS ? Accessors.getCached(slot, true, false) : null;
- }
- private static MethodHandle objectGetter(final int slot) {
- return Accessors.getCached(slot, false, true);
- }
- private static MethodHandle objectSetter(final int slot) {
- return Accessors.getCached(slot, false, false);
- }
-
- /**
- * Constructor for spill properties. Array getters and setters will be created on demand.
- *
- * @param key the property key
- * @param flags the property flags
- * @param slot spill slot
- */
- public SpillProperty(final String key, final int flags, final int slot) {
- super(key, flags, slot, primitiveGetter(slot, flags), primitiveSetter(slot, flags), objectGetter(slot), objectSetter(slot));
- }
-
- /**
- * Constructor for spill properties with an initial type.
- * @param key the property key
- * @param flags the property flags
- * @param slot spill slot
- * @param initialType initial type
- */
- public SpillProperty(final String key, final int flags, final int slot, final Class<?> initialType) {
- this(key, flags, slot);
- setType(hasDualFields() ? initialType : Object.class);
- }
-
- SpillProperty(final String key, final int flags, final int slot, final ScriptObject owner, final Object initialValue) {
- this(key, flags, slot);
- setInitialValue(owner, initialValue);
- }
-
- /**
- * Copy constructor
- * @param property other property
- */
- protected SpillProperty(final SpillProperty property) {
- super(property);
- }
-
- /**
- * Copy constructor
- * @param newType new type
- * @param property other property
- */
- protected SpillProperty(final SpillProperty property, final Class<?> newType) {
- super(property, newType);
- }
-
- @Override
- public Property copy() {
- return new SpillProperty(this);
- }
-
- @Override
- public Property copy(final Class<?> newType) {
- return new SpillProperty(this, newType);
- }
-
- @Override
- public boolean isSpill() {
- return true;
- }
-
- @Override
- void initMethodHandles(final Class<?> structure) {
- final int slot = getSlot();
- primitiveGetter = primitiveGetter(slot, getFlags());
- primitiveSetter = primitiveSetter(slot, getFlags());
- objectGetter = objectGetter(slot);
- objectSetter = objectSetter(slot);
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-28 18:05:08 +0000