| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.datasketches.memory.internal; |
| |
| import org.apache.datasketches.memory.MemoryRequestServer; |
| import org.apache.datasketches.memory.WritableMemory; |
| |
| import jdk.incubator.foreign.MemoryAccess; |
| import jdk.incubator.foreign.MemorySegment; |
| |
| /* |
| * Developer notes: The heavier methods, such as put/get arrays, duplicate, region, clear, fill, |
| * compareTo, etc., use hard checks (checkValid*() and checkBounds()), which execute at runtime and |
| * throw exceptions if violated. The cost of the runtime checks are minor compared to the rest of |
| * the work these methods are doing. |
| * |
| * <p>The light weight methods, such as put/get primitives, use asserts (assertValid*()), which only |
| * execute when asserts are enabled and JIT will remove them entirely from production runtime code. |
| * The light weight methods will simplify to a single unsafe call, which is further simplified by |
| * JIT to an intrinsic that is often a single CPU instruction. |
| */ |
| |
| /** |
| * Implementation of {@link WritableMemory} for native endian byte order. |
| * @author Roman Leventov |
| * @author Lee Rhodes |
| */ |
| final class NativeWritableMemoryImpl extends BaseWritableMemoryImpl { |
| |
| //All native endian, read-only and writable Memory instances start initialization here |
| NativeWritableMemoryImpl( |
| final MemorySegment seg, |
| final int typeId, |
| final MemoryRequestServer memReqSvr) { |
| super(seg, typeId, memReqSvr); |
| } |
| |
| ///PRIMITIVE getX() and getXArray() |
| @Override |
| public char getChar(final long offsetBytes) { |
| return MemoryAccess.getCharAtOffset(seg, offsetBytes); |
| } |
| |
| @Override |
| public void getCharArray(final long offsetBytes, final char[] dstArray, final int dstOffsetChars, |
| final int lengthChars) { |
| final long copyBytes = ((long) lengthChars) << CHAR_SHIFT; |
| final MemorySegment srcSlice = seg.asSlice(offsetBytes, copyBytes); |
| final MemorySegment dstSlice = MemorySegment.ofArray(dstArray).asSlice(dstOffsetChars << CHAR_SHIFT, copyBytes); |
| dstSlice.copyFrom(srcSlice); |
| } |
| |
| @Override |
| public double getDouble(final long offsetBytes) { |
| return MemoryAccess.getDoubleAtOffset(seg, offsetBytes); |
| } |
| |
| @Override |
| public void getDoubleArray(final long offsetBytes, final double[] dstArray, |
| final int dstOffsetDoubles, final int lengthDoubles) { |
| final long copyBytes = ((long) lengthDoubles) << DOUBLE_SHIFT; |
| final MemorySegment srcSlice = seg.asSlice(offsetBytes, copyBytes); |
| final MemorySegment dstSlice = MemorySegment.ofArray(dstArray).asSlice(dstOffsetDoubles << DOUBLE_SHIFT, copyBytes); |
| dstSlice.copyFrom(srcSlice); |
| } |
| |
| @Override |
| public float getFloat(final long offsetBytes) { |
| return MemoryAccess.getFloatAtOffset(seg, offsetBytes); |
| } |
| |
| @Override |
| public void getFloatArray(final long offsetBytes, final float[] dstArray, |
| final int dstOffsetFloats, final int lengthFloats) { |
| final long copyBytes = ((long) lengthFloats) << FLOAT_SHIFT; |
| final MemorySegment srcSlice = seg.asSlice(offsetBytes, copyBytes); |
| final MemorySegment dstSlice = MemorySegment.ofArray(dstArray).asSlice(dstOffsetFloats << FLOAT_SHIFT, copyBytes); |
| dstSlice.copyFrom(srcSlice); |
| } |
| |
| @Override |
| public int getInt(final long offsetBytes) { |
| return MemoryAccess.getIntAtOffset(seg, offsetBytes); |
| } |
| |
| @Override |
| public void getIntArray(final long offsetBytes, final int[] dstArray, final int dstOffsetInts, |
| final int lengthInts) { |
| final long copyBytes = ((long) lengthInts) << INT_SHIFT; |
| final MemorySegment srcSlice = seg.asSlice(offsetBytes, copyBytes); |
| final MemorySegment dstSlice = MemorySegment.ofArray(dstArray).asSlice(dstOffsetInts << INT_SHIFT, copyBytes); |
| dstSlice.copyFrom(srcSlice); |
| } |
| |
| @Override |
| public long getLong(final long offsetBytes) { |
| return MemoryAccess.getLongAtOffset(seg, offsetBytes); |
| } |
| |
| @Override |
| public void getLongArray(final long offsetBytes, final long[] dstArray, |
| final int dstOffsetLongs, final int lengthLongs) { |
| final long copyBytes = ((long) lengthLongs) << LONG_SHIFT; |
| final MemorySegment srcSlice = seg.asSlice(offsetBytes, copyBytes); |
| final MemorySegment dstSlice = MemorySegment.ofArray(dstArray).asSlice(dstOffsetLongs << LONG_SHIFT, copyBytes); |
| dstSlice.copyFrom(srcSlice); |
| } |
| |
| @Override |
| public short getShort(final long offsetBytes) { |
| return MemoryAccess.getShortAtOffset(seg, offsetBytes); |
| } |
| |
| @Override |
| public void getShortArray(final long offsetBytes, final short[] dstArray, |
| final int dstOffsetShorts, final int lengthShorts) { |
| final long copyBytes = ((long) lengthShorts) << SHORT_SHIFT; |
| final MemorySegment srcSlice = seg.asSlice(offsetBytes, copyBytes); |
| final MemorySegment dstSlice = MemorySegment.ofArray(dstArray).asSlice(dstOffsetShorts << SHORT_SHIFT, copyBytes); |
| dstSlice.copyFrom(srcSlice); |
| } |
| |
| //PRIMITIVE putX() and putXArray() implementations |
| @Override |
| public void putChar(final long offsetBytes, final char value) { |
| MemoryAccess.setCharAtOffset(seg, offsetBytes, value); |
| } |
| |
| @Override |
| public void putCharArray(final long offsetBytes, final char[] srcArray, |
| final int srcOffsetChars, final int lengthChars) { |
| final long copyBytes = ((long) lengthChars) << CHAR_SHIFT; |
| final MemorySegment srcSlice = MemorySegment.ofArray(srcArray).asSlice(srcOffsetChars << CHAR_SHIFT, copyBytes); |
| final MemorySegment dstSlice = seg.asSlice(offsetBytes, copyBytes); |
| dstSlice.copyFrom(srcSlice); |
| } |
| |
| @Override |
| public void putDouble(final long offsetBytes, final double value) { |
| MemoryAccess.setDoubleAtOffset(seg, offsetBytes, value); |
| } |
| |
| @Override |
| public void putDoubleArray(final long offsetBytes, final double[] srcArray, |
| final int srcOffsetDoubles, final int lengthDoubles) { |
| final long copyBytes = ((long) lengthDoubles) << DOUBLE_SHIFT; |
| final MemorySegment srcSlice = MemorySegment.ofArray(srcArray).asSlice(srcOffsetDoubles << DOUBLE_SHIFT, copyBytes); |
| final MemorySegment dstSlice = seg.asSlice(offsetBytes, copyBytes); |
| dstSlice.copyFrom(srcSlice); |
| } |
| |
| @Override |
| public void putFloat(final long offsetBytes, final float value) { |
| MemoryAccess.setFloatAtOffset(seg, offsetBytes, value); |
| } |
| |
| @Override |
| public void putFloatArray(final long offsetBytes, final float[] srcArray, |
| final int srcOffsetFloats, final int lengthFloats) { |
| final long copyBytes = ((long) lengthFloats) << FLOAT_SHIFT; |
| final MemorySegment srcSlice = MemorySegment.ofArray(srcArray).asSlice(srcOffsetFloats << FLOAT_SHIFT, copyBytes); |
| final MemorySegment dstSlice = seg.asSlice(offsetBytes, copyBytes); |
| dstSlice.copyFrom(srcSlice); |
| } |
| |
| @Override |
| public void putInt(final long offsetBytes, final int value) { |
| MemoryAccess.setIntAtOffset(seg, offsetBytes, value); |
| } |
| |
| @Override |
| public void putIntArray(final long offsetBytes, final int[] srcArray, final int srcOffsetInts, |
| final int lengthInts) { |
| final long copyBytes = ((long) lengthInts) << INT_SHIFT; |
| final MemorySegment srcSlice = MemorySegment.ofArray(srcArray).asSlice(srcOffsetInts << INT_SHIFT, copyBytes); |
| final MemorySegment dstSlice = seg.asSlice(offsetBytes, copyBytes); |
| dstSlice.copyFrom(srcSlice); |
| } |
| |
| @Override |
| public void putLong(final long offsetBytes, final long value) { |
| MemoryAccess.setLongAtOffset(seg, offsetBytes, value); |
| } |
| |
| @Override |
| public void putLongArray(final long offsetBytes, final long[] srcArray, final int srcOffsetLongs, |
| final int lengthLongs) { |
| final long copyBytes = ((long) lengthLongs) << LONG_SHIFT; |
| final MemorySegment srcSlice = MemorySegment.ofArray(srcArray).asSlice(srcOffsetLongs << LONG_SHIFT, copyBytes); |
| final MemorySegment dstSlice = seg.asSlice(offsetBytes, copyBytes); |
| dstSlice.copyFrom(srcSlice); |
| } |
| |
| @Override |
| public void putShort(final long offsetBytes, final short value) { |
| MemoryAccess.setShortAtOffset(seg, offsetBytes, value); |
| } |
| |
| @Override |
| public void putShortArray(final long offsetBytes, final short[] srcArray, |
| final int srcOffsetShorts, final int lengthShorts) { |
| final long copyBytes = ((long) lengthShorts) << SHORT_SHIFT; |
| final MemorySegment srcSlice = MemorySegment.ofArray(srcArray).asSlice(srcOffsetShorts << SHORT_SHIFT, copyBytes); |
| final MemorySegment dstSlice = seg.asSlice(offsetBytes, copyBytes); |
| dstSlice.copyFrom(srcSlice); |
| } |
| |
| } |