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JDK 17 jdk.incubator.vector.jmod - JDK Incubator Vector
JDK 17 jdk.incubator.vector.jmod is the JMOD file for JDK 17 HTTP Server module.
JDK 17 Incubator Vector module compiled class files are stored in \fyicenter\jdk-17.0.5\jmods\jdk.incubator.vector.jmod.
JDK 17 Incubator Vector module compiled class files are also linked and stored in the \fyicenter\jdk-17.0.5\lib\modules JImage file.
JDK 17 Incubator Vector module source code files are stored in \fyicenter\jdk-17.0.5\lib\src.zip\jdk.incubator.vector.
You can click and view the content of each source code file in the list below.
✍: FYIcenter
⏎ jdk/incubator/vector/VectorShuffle.java
/* * Copyright (c) 2017, 2020, Oracle and/or its affiliates. All rights reserved. * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. * * * * * * * * * * * * * * * * * * * * */ package jdk.incubator.vector; import jdk.internal.vm.annotation.ForceInline; import java.util.Objects; import java.util.Arrays; import java.util.function.IntUnaryOperator; /** * A {@code VectorShuffle} represents an ordered immutable sequence of * {@code int} values called <em>source indexes</em>, where each source * index numerically selects a source lane from a compatible {@link Vector}. * <p> * A {@code VectorShuffle} and {@code Vector} of the same * <a href="Vector.html#ETYPE">element type</a> * ({@code ETYPE}) and {@link VectorShape shape} have the same number of lanes, * and are therefore compatible (specifically, their {@link #vectorSpecies() * vector species} are compatible). * <p> * A shuffle is applied to a (compatible) source vector with the * {@link Vector#rearrange(VectorShuffle) rearrange} * method. * <p> * A shuffle has a lane structure derived from its vector * species, but it stores lane indexes, as {@code int}s, * rather than lane values. * <p> * This method gathers lane values by random access to the source * vector, selecting lanes by consulting the source indexes. If a * source index appears more than once in a shuffle, then the selected * lane's value is copied more than once into the result. If a * particular lane is never selected by a source index, that lane's * value is ignored. The resulting vector contains all the source * lane values selected by the source indexes of the shuffle. The * resulting lane values are ordered according to the shuffle's source * indexes, not according to the original vector's lane order. * <p> * Each shuffle has a {@link #vectorSpecies() vectorSpecies()} * property which determines the compatibility of vectors the shuffle * operates on. This ensures that the {@link #length() length()} of a * shuffle is always equal to the {@linkplain Vector#length() VLENGTH} * of any vector it operates on. * * The element type and shape of the shuffle's species are not * directly relevant to the behavior of the shuffle. Shuffles can * easily be {@linkplain #cast(VectorSpecies) converted} to other lane * types, as long as the lane count stays constant. * * <p> * In its internal state, a shuffle always holds integral values * in a narrow range from {@code [-VLENGTH..VLENGTH-1]}. * The positive numbers are self-explanatory; they are lane * numbers applied to any source vector. The negative numbers, * when present, are a sign that the shuffle was created from * a raw integer value which was not a valid lane index. * <p> * An invalid source index, represented in a shuffle by a * negative number, is called an <em>exceptional index</em>. * <p> * Exceptional indexes are processed in a variety of ways: * <ul> * * <li> Unless documented otherwise, shuffle-using methods will throw * {@code ArrayIndexOutOfBoundsException} when a lane is processed by * an exceptional index. * * <li> When an invalid source index (negative or not) is first loaded * into a shuffle, it is partially normalized to the negative range of * {@code [-VLENGTH..-1]} as if by {@link #wrapIndex(int) wrapIndex()}. * * This treatment of exceptional indexes is called <em>partial * wrapping</em>, because it preserves the distinction between normal * and exceptional indexes, while wrapping them into adjacent ranges * of positive and non-positive numbers. A partially wrapped index * can later on be fully wrapped into the positive range by adding * a final offset of {@code VLENGTH}. * * <li> In some applications, exceptional indexes used to "steer" * access to a second source vector. In those cases, the exception * index values, which are in the range {@code [-VLENGTH..-1]}, are * cycled up to the valid range {@code [0..VLENGTH-1]} and used on the * second source vector. * * <li> When a shuffle is cast from another shuffle species with a * smaller {@code VLENGTH}, all indexes are re-validated against the * new {@code VLENGTH}, and some may be converted to exceptional * indexes. In any case, shuffle casting never converts exceptional * indexes to normal ones. * * </ul> * <h2>Value-based classes and identity operations</h2> * * {@code VectorShuffle}, along with {@code Vector} is a * <a href="{@docRoot}/java.base/java/lang/doc-files/ValueBased.html">value-based</a> * class. Identity-sensitive operations such as {@code ==} * may yield unpredictable results, or reduced performance. * * Also, vector shuffle objects can be stored in locals and parameters and as * {@code static final} constants, but storing them in other Java * fields or in array elements, while semantically valid, may incur * performance penalties. * * Finally, vector shuffles should not be computed in loops, when * possible, but instead should be stored in loop-invariant locals or * as {@code static final} constants. * * @param <E> the boxed version of {@code ETYPE}, * the element type of a vector */ @SuppressWarnings("exports") public abstract class VectorShuffle<E> extends jdk.internal.vm.vector.VectorSupport.VectorShuffle<E> { VectorShuffle(byte[] reorder) { super(reorder); } /** * Returns the species of this shuffle. * * @return the species of this shuffle */ public abstract VectorSpecies<E> vectorSpecies(); /** * Returns the number of lanes processed by this shuffle. * This is the same as the {@code VLENGTH} of any vector * it operates on. * * @return the number of shuffle lanes */ @ForceInline public final int length() { AbstractSpecies<E> vspecies = (AbstractSpecies<E>) vectorSpecies(); return vspecies.laneCount(); } /** * Converts this shuffle to a shuffle of the given species of * element type {@code F}. * * The various lane source indexes are unmodified. Exceptional * source indexes remain exceptional and valid indexes remain * valid. * * @param species the species of desired shuffle * @param <F> the boxed element type of the species * @return a shuffle converted by shape and element type * @throws IllegalArgumentException if this shuffle length and the * species length differ */ public abstract <F> VectorShuffle<F> cast(VectorSpecies<F> species); /** * Checks that this shuffle has the given species, * and returns this shuffle unchanged. * The effect is similar to this pseudocode: * {@code species == vectorSpecies() * ? this * : throw new ClassCastException()}. * * @param species the required species * @param <F> the boxed element type of the required species * @return the same shuffle * @throws ClassCastException if the shuffle species is wrong * @see Vector#check(Class) * @see Vector#check(VectorSpecies) */ public abstract <F> VectorShuffle<F> check(VectorSpecies<F> species); /** * Validation function for lane indexes which may be out of the * valid range of {@code [0..VLENGTH-1]}. If {@code index} is in * this range, it is returned unchanged. * * Otherwise, an {@code IndexOutOfBoundsException} is thrown. * * @param index the lane index * @return {@code index} * @throws IndexOutOfBoundsException if the {@code index} is * not less than {@code VLENGTH}, or is negative * @see #wrapIndex(int) * @see #checkIndexes() */ public abstract int checkIndex(int index); /** * Validation function for lane indexes which may be out of the * valid range of {@code [0..VLENGTH-1]}. * * The {@code index} is forced into this range by adding or * subtracting a suitable multiple of {@code VLENGTH}. * Specifically, the index is reduced into the required range * by computing the value of {@code length-floor}, where * {@code floor=vectorSpecies().loopBound(length)} is the * next lower multiple of {@code VLENGTH}. * As long as {@code VLENGTH} is a power of two, then the * reduced index also equal to {@code index & (VLENGTH - 1)}. * * @param index the lane index * @return {@code index}, adjusted to the range {@code [0..VLENGTH-1}} * by an appropriate multiple of {@code VLENGTH} * @see VectorSpecies#loopBound(int) * @see #checkIndex(int) * @see #wrapIndexes() */ public abstract int wrapIndex(int index); /** * Apply the {@link #checkIndex(int) checkIndex()} validation * function to all lanes, throwing * {@code IndexOutOfBoundsException} if there are any exceptional * indexes in this shuffle. * * @return the current shuffle, unchanged * @throws IndexOutOfBoundsException if any lanes in this shuffle * contain exceptional indexes * @see #checkIndex(int) * @see #wrapIndexes() */ public abstract VectorShuffle<E> checkIndexes(); /** * Apply the {@link #wrapIndex(int) wrapIndex()} validation * function to all lanes, replacing any exceptional indexes * with wrapped normal indexes. * * @return the current shuffle, with all exceptional indexes wrapped * @see #wrapIndex(int) * @see #checkIndexes() */ public abstract VectorShuffle<E> wrapIndexes(); /** * Find all lanes containing valid indexes (non-negative values) * and return a mask where exactly those lanes are set. * * @return a mask of lanes containing valid source indexes * @see #checkIndexes() */ public abstract VectorMask<E> laneIsValid(); /** * Creates a shuffle for a given species from * a series of source indexes. * * <p> For each shuffle lane, where {@code N} is the shuffle lane * index, the {@code N}th index value is validated * against the species {@code VLENGTH}, and (if invalid) * is partially wrapped to an exceptional index in the * range {@code [-VLENGTH..-1]}. * * @param species shuffle species * @param sourceIndexes the source indexes which the shuffle will draw from * @param <E> the boxed element type * @return a shuffle where each lane's source index is set to the given * {@code int} value, partially wrapped if exceptional * @throws IndexOutOfBoundsException if {@code sourceIndexes.length != VLENGTH} * @see VectorSpecies#shuffleFromValues(int...) */ @ForceInline public static <E> VectorShuffle<E> fromValues(VectorSpecies<E> species, int... sourceIndexes) { AbstractSpecies<E> vsp = (AbstractSpecies<E>) species; VectorIntrinsics.requireLength(sourceIndexes.length, vsp.laneCount()); return vsp.shuffleFromArray(sourceIndexes, 0); } /** * Creates a shuffle for a given species from * an {@code int} array starting at an offset. * * <p> For each shuffle lane, where {@code N} is the shuffle lane * index, the array element at index {@code offset + N} is validated * against the species {@code VLENGTH}, and (if invalid) * is partially wrapped to an exceptional index in the * range {@code [-VLENGTH..-1]}. * * @param species shuffle species * @param sourceIndexes the source indexes which the shuffle will draw from * @param offset the offset into the array * @param <E> the boxed element type * @return a shuffle where each lane's source index is set to the given * {@code int} value, partially wrapped if exceptional * @throws IndexOutOfBoundsException if {@code offset < 0}, or * {@code offset > sourceIndexes.length - VLENGTH} * @see VectorSpecies#shuffleFromArray(int[], int) */ @ForceInline public static <E> VectorShuffle<E> fromArray(VectorSpecies<E> species, int[] sourceIndexes, int offset) { AbstractSpecies<E> vsp = (AbstractSpecies<E>) species; return vsp.shuffleFromArray(sourceIndexes, offset); } /** * Creates a shuffle for a given species from * the successive values of an operator applied to * the range {@code [0..VLENGTH-1]}. * * <p> For each shuffle lane, where {@code N} is the shuffle lane * index, the {@code N}th index value is validated * against the species {@code VLENGTH}, and (if invalid) * is partially wrapped to an exceptional index in the * range {@code [-VLENGTH..-1]}. * * <p> Care should be taken to ensure {@code VectorShuffle} values * produced from this method are consumed as constants to ensure * optimal generation of code. For example, shuffle values can be * held in {@code static final} fields or loop-invariant local variables. * * <p> This method behaves as if a shuffle is created from an array of * mapped indexes as follows: * <pre>{@code * int[] a = new int[species.length()]; * for (int i = 0; i < a.length; i++) { * a[i] = fn.applyAsInt(i); * } * return VectorShuffle.fromArray(a, 0); * }</pre> * * @param species shuffle species * @param fn the lane index mapping function * @param <E> the boxed element type * @return a shuffle of mapped indexes * @see VectorSpecies#shuffleFromOp(IntUnaryOperator) */ @ForceInline public static <E> VectorShuffle<E> fromOp(VectorSpecies<E> species, IntUnaryOperator fn) { AbstractSpecies<E> vsp = (AbstractSpecies<E>) species; return vsp.shuffleFromOp(fn); } /** * Creates a shuffle using source indexes set to sequential * values starting from {@code start} and stepping * by the given {@code step}. * <p> * This method returns the value of the expression * {@code VectorShuffle.fromOp(species, i -> R(start + i * step))}, * where {@code R} is {@link VectorShuffle#wrapIndex(int) wrapIndex} * if {@code wrap} is true, and is the identity function otherwise. * <p> * If {@code wrap} is false each index is validated * against the species {@code VLENGTH}, and (if invalid) * is partially wrapped to an exceptional index in the * range {@code [-VLENGTH..-1]}. * Otherwise, if {@code wrap} is true, also reduce each index, as if * by {@link VectorShuffle#wrapIndex(int) wrapIndex}, * to the valid range {@code [0..VLENGTH-1]}. * * @apiNote The {@code wrap} parameter should be set to {@code * true} if invalid source indexes should be wrapped. Otherwise, * setting it to {@code false} allows invalid source indexes to be * range-checked by later operations such as * {@link Vector#rearrange(VectorShuffle) unary rearrange}. * * @param species shuffle species * @param start the starting value of the source index sequence * @param step the difference between adjacent source indexes * @param wrap whether to wrap resulting indexes * @param <E> the boxed element type * @return a shuffle of sequential lane indexes, possibly wrapped * @see VectorSpecies#iotaShuffle(int,int,boolean) */ @ForceInline public static <E> VectorShuffle<E> iota(VectorSpecies<E> species, int start, int step, boolean wrap) { AbstractSpecies<E> vsp = (AbstractSpecies<E>) species; return vsp.iotaShuffle(start, step, wrap); } /** * Creates a shuffle which will zip together two vectors, * alternatively selecting lanes from one or the other. * The logical result of a zip is twice the size of either * input, and so the * <a href="Vector.html#expansion">expanded result</a> * is broken into two physical parts, selected by * a part number. * For example, zipping two vectors {@code [a,b,c,d]} and * {@code [1,2,3,4]} will yield the expanded logical result * {@code [a,1,b,2,c,3,d,4]} which must be obtained in two * parts, {@code [a,1,b,2]} and {@code [c,3,d,4]}. * <p> * This method returns the value of the expression * {@code VectorShuffle.fromOp(species, i -> i/2 + (i%2)*VLENGTH + P}, * where {@code P} is {@code part*VLENGTH/2}. * <p>s * Note that the source indexes in the odd lanes of the shuffle * will be invalid indexes ({@code >= VLENGTH}, or {@code < 0} * after partial normalization), which will select from the second * vector. * * @param species the shuffle species * @param part the part number of the result (either zero or one) * @param <E> the boxed element type * @return a shuffle which zips two vectors into {@code 2*VLENGTH} lanes, returning the selected part * @throws ArrayIndexOutOfBoundsException if {@code part} is not zero or one * @see #makeUnzip(VectorSpecies, int) * @see Vector#rearrange(VectorShuffle,Vector) */ public static <E> VectorShuffle<E> makeZip(VectorSpecies<E> species, int part) { if ((part & 1) != part) throw wrongPartForZip(part, false); AbstractSpecies<E> vsp = (AbstractSpecies<E>) species; return vsp.shuffleFromOp(i -> zipIndex(i, vsp.laneCount(), part)); } /** * Creates a shuffle which will unzip the concatenation of two * vectors, alternatively storing input lanes into one or the * other output vector. * Since the logical result of an unzip is twice the size of * either input, the * <a href="Vector.html#expansion">expanded result</a> * is broken into two physical parts, selected by * a part number. * For example, unzipping two vectors {@code [a,1,b,2][c,3,d,4]} * will yield a result in two parts, {@code [a,b,c,d]} and * {@code [1,2,3,4]}. * <p> * This method returns the value of the expression * {@code VectorShuffle.fromOp(species, i -> i*2+part}. * <p> * Note that the source indexes in upper half of the shuffle will * be invalid indexes ({@code >= VLENGTH}, or {@code < 0} after * partial normalization), which will select from the second * vector. * * @param species the shuffle species * @param part the part number of the result (either zero or one) * @param <E> the boxed element type * @return a shuffle which unzips {@code 2*VLENGTH} lanes into two vectors, returning the selected part * @throws ArrayIndexOutOfBoundsException if {@code part} is not zero or one * @see #makeZip(VectorSpecies,int) * @see Vector#rearrange(VectorShuffle,Vector) */ public static <E> VectorShuffle<E> makeUnzip(VectorSpecies<E> species, int part) { if ((part & 1) != part) throw wrongPartForZip(part, true); AbstractSpecies<E> vsp = (AbstractSpecies<E>) species; return vsp.shuffleFromOp(i -> unzipIndex(i, vsp.laneCount(), part)); } private static int zipIndex(int i, int vlen, int part) { int offset = part * ((vlen+1) >> 1); return (i/2) + ((i&1) * vlen) + offset; } private static int unzipIndex(int i, int vlen, int part) { return (i*2) + part; } private static ArrayIndexOutOfBoundsException wrongPartForZip(int part, boolean unzip) { String msg = String.format("bad part number %d for %szip", part, unzip ? "un" : ""); return new ArrayIndexOutOfBoundsException(msg); } /** * Returns an {@code int} array containing the lane * source indexes of this shuffle. * <p> * This method behaves as if it stores * this shuffle into an allocated array * (using {@link #intoArray(int[], int) intoArray}) * and returns that array as * follows: * <pre>{@code * int[] a = new int[this.length()]; * VectorShuffle.intoArray(a, 0); * return a; * }</pre> * * @apiNote Shuffle source indexes are always in the * range from {@code -VLENGTH} to {@code VLENGTH-1}. * A source index is exceptional if and only if it is * negative. * * @return an array containing the lane source indexes * of this shuffle */ public abstract int[] toArray(); /** * Stores this shuffle into an {@code int} array starting at offset. * <p> * For each shuffle lane {@code N}, the lane source index * stored for that lane element is stored into the array * element {@code a[offset+N]}. * * @apiNote Shuffle source indexes are always in the * range from {@code -VLENGTH} to {@code VLENGTH-1}. * * @param a the array, of type {@code int[]} * @param offset the offset into the array * @throws IndexOutOfBoundsException if {@code offset < 0} or * {@code offset > a.length - this.length()} */ public abstract void intoArray(int[] a, int offset); /** * Converts this shuffle into a vector, creating a vector * of integral values corresponding to the lane source * indexes of the shuffle. * <p> * This method behaves as if it returns the result of creating a * vector given an {@code int} array obtained from this shuffle's * lane elements, as follows: * <pre>{@code * int[] sa = this.toArray(); * $type$[] va = new $type$[a.length]; * for (int i = 0; i < a.length; i++) { * va[i] = ($type$) sa[i]; * } * return IntVector.fromArray(va, 0); * }</pre> * * @apiNote Shuffle source indexes are always in the * range from {@code -VLENGTH} to {@code VLENGTH-1}. * These values are converted to the {@code ETYPE} * of the resulting vector, even if it is a floating * point type. * * @return a vector representation of this shuffle */ public abstract Vector<E> toVector(); /** * Gets the {@code int} lane element at lane index {@code i} * * @param i the lane index * @return the {@code int} lane element at lane index {@code i} */ public int laneSource(int i) { return toArray()[i]; } /** * Rearranges the lane elements of this shuffle selecting lane indexes * controlled by another shuffle. * <p> * For each lane of the specified shuffle, at lane index {@code N} with lane * element {@code I}, the lane element at {@code I} from this shuffle is * selected and placed into the resulting shuffle at {@code N}. * * @param s the shuffle controlling lane index selection * @return the rearrangement of the lane elements of this shuffle */ public abstract VectorShuffle<E> rearrange(VectorShuffle<E> s); /** * Returns a string representation of this shuffle, of the form * {@code "Shuffle[0,1,2...]"}, reporting the source indexes * in lane order. * * @return a string of the form {@code "Shuffle[0,1,2...]"} */ @Override public final String toString() { return "Shuffle" + Arrays.toString(toArray()); } /** * Indicates whether this shuffle is identical to some other object. * Two shuffles are identical only if they have the same species * and same source indexes, in the same order. * @return whether this vector is identical to some other object */ @Override public final boolean equals(Object obj) { if (obj instanceof VectorShuffle) { VectorShuffle<?> that = (VectorShuffle<?>) obj; if (this.vectorSpecies().equals(that.vectorSpecies())) { return Arrays.equals(this.toArray(), that.toArray()); } } return false; } /** * Returns a hash code value for the shuffle, * based on the lane source indexes and the vector species. * * @return a hash code value for this shuffle */ @Override public final int hashCode() { return Objects.hash(vectorSpecies(), Arrays.hashCode(toArray())); } // ==== JROSE NAME CHANGES ==== // ADDED: // * check(VectorSpecies) (static type-safety check) // * toString(), equals(Object), hashCode() (documented) // * checkIndex(int,byte), lane-index validator similar to loopBound() //FIXME: maybe add inversion, mask generation, index normalization }
⏎ jdk/incubator/vector/VectorShuffle.java
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⇒ JDK 17 jdk.internal.ed.jmod - Internal Editor Module
2023-10-04, 4044👍, 0💬
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