/* * Copyright (c) 2019, 2023, 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. * * 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. */ /* * @test * @run testng/othervm -Djava.lang.invoke.VarHandle.VAR_HANDLE_GUARDS=true -Djava.lang.invoke.VarHandle.VAR_HANDLE_IDENTITY_ADAPT=false -Xverify:all TestMemoryAccess * @run testng/othervm -Djava.lang.invoke.VarHandle.VAR_HANDLE_GUARDS=true -Djava.lang.invoke.VarHandle.VAR_HANDLE_IDENTITY_ADAPT=true -Xverify:all TestMemoryAccess * @run testng/othervm -Djava.lang.invoke.VarHandle.VAR_HANDLE_GUARDS=false -Djava.lang.invoke.VarHandle.VAR_HANDLE_IDENTITY_ADAPT=false -Xverify:all TestMemoryAccess * @run testng/othervm -Djava.lang.invoke.VarHandle.VAR_HANDLE_GUARDS=false -Djava.lang.invoke.VarHandle.VAR_HANDLE_IDENTITY_ADAPT=true -Xverify:all TestMemoryAccess */ import java.lang.foreign.*; import java.lang.foreign.MemoryLayout.PathElement; import java.lang.invoke.VarHandle; import java.nio.ByteOrder; import java.util.function.Function; import org.testng.annotations.*; import static org.testng.Assert.*; public class TestMemoryAccess { @Test(dataProvider = "elements") public void testAccess(Function viewFactory, ValueLayout elemLayout, Checker checker) { ValueLayout layout = elemLayout.withName("elem"); testAccessInternal(viewFactory, layout, layout.varHandle(), checker); } @Test(dataProvider = "elements") public void testPaddedAccessByName(Function viewFactory, MemoryLayout elemLayout, Checker checker) { GroupLayout layout = MemoryLayout.structLayout(MemoryLayout.paddingLayout(elemLayout.byteSize()), elemLayout.withName("elem")); testAccessInternal(viewFactory, layout, layout.varHandle(PathElement.groupElement("elem")), checker); } @Test(dataProvider = "elements") public void testPaddedAccessByIndexSeq(Function viewFactory, MemoryLayout elemLayout, Checker checker) { SequenceLayout layout = MemoryLayout.sequenceLayout(2, elemLayout); testAccessInternal(viewFactory, layout, layout.varHandle(PathElement.sequenceElement(1)), checker); } @Test(dataProvider = "arrayElements") public void testArrayAccess(Function viewFactory, MemoryLayout elemLayout, ArrayChecker checker) { SequenceLayout seq = MemoryLayout.sequenceLayout(10, elemLayout.withName("elem")); testArrayAccessInternal(viewFactory, seq, seq.varHandle(PathElement.sequenceElement()), checker); } @Test(dataProvider = "arrayElements") public void testPaddedArrayAccessByName(Function viewFactory, MemoryLayout elemLayout, ArrayChecker checker) { SequenceLayout seq = MemoryLayout.sequenceLayout(10, MemoryLayout.structLayout(MemoryLayout.paddingLayout(elemLayout.byteSize()), elemLayout.withName("elem"))); testArrayAccessInternal(viewFactory, seq, seq.varHandle(MemoryLayout.PathElement.sequenceElement(), MemoryLayout.PathElement.groupElement("elem")), checker); } @Test(dataProvider = "arrayElements") public void testPaddedArrayAccessByIndexSeq(Function viewFactory, MemoryLayout elemLayout, ArrayChecker checker) { SequenceLayout seq = MemoryLayout.sequenceLayout(10, MemoryLayout.sequenceLayout(2, elemLayout)); testArrayAccessInternal(viewFactory, seq, seq.varHandle(PathElement.sequenceElement(), MemoryLayout.PathElement.sequenceElement(1)), checker); } private void testAccessInternal(Function viewFactory, MemoryLayout layout, VarHandle handle, Checker checker) { MemorySegment outer_segment; try (Arena arena = Arena.ofConfined()) { MemorySegment segment = viewFactory.apply(arena.allocate(layout)); boolean isRO = segment.isReadOnly(); try { checker.check(handle, segment); if (isRO) { throw new AssertionError(); //not ok, memory should be immutable } } catch (IllegalArgumentException ex) { if (!isRO) { throw new AssertionError(); //we should not have failed! } return; } try { checker.check(handle, segment.asSlice(layout.byteSize())); throw new AssertionError(); //not ok, out of bounds } catch (IndexOutOfBoundsException ex) { //ok, should fail (out of bounds) } outer_segment = segment; //leak! } try { checker.check(handle, outer_segment); throw new AssertionError(); //not ok, session is closed } catch (IllegalStateException ex) { //ok, should fail (session is closed) } } private void testArrayAccessInternal(Function viewFactory, SequenceLayout seq, VarHandle handle, ArrayChecker checker) { MemorySegment outer_segment; try (Arena arena = Arena.ofConfined()) { MemorySegment segment = viewFactory.apply(arena.allocate(seq)); boolean isRO = segment.isReadOnly(); try { for (int i = 0; i < seq.elementCount(); i++) { checker.check(handle, segment, i); } if (isRO) { throw new AssertionError(); //not ok, memory should be immutable } } catch (IllegalArgumentException ex) { if (!isRO) { throw new AssertionError(); //we should not have failed! } return; } try { checker.check(handle, segment, seq.elementCount()); throw new AssertionError(); //not ok, out of bounds } catch (IndexOutOfBoundsException ex) { //ok, should fail (out of bounds) } outer_segment = segment; //leak! } try { checker.check(handle, outer_segment, 0); throw new AssertionError(); //not ok, session is closed } catch (IllegalStateException ex) { //ok, should fail (session is closed) } } @Test(dataProvider = "matrixElements") public void testMatrixAccess(Function viewFactory, MemoryLayout elemLayout, MatrixChecker checker) { SequenceLayout seq = MemoryLayout.sequenceLayout(20, MemoryLayout.sequenceLayout(10, elemLayout.withName("elem"))); testMatrixAccessInternal(viewFactory, seq, seq.varHandle( PathElement.sequenceElement(), PathElement.sequenceElement()), checker); } @Test(dataProvider = "matrixElements") public void testPaddedMatrixAccessByName(Function viewFactory, MemoryLayout elemLayout, MatrixChecker checker) { SequenceLayout seq = MemoryLayout.sequenceLayout(20, MemoryLayout.sequenceLayout(10, MemoryLayout.structLayout(MemoryLayout.paddingLayout(elemLayout.byteSize()), elemLayout.withName("elem")))); testMatrixAccessInternal(viewFactory, seq, seq.varHandle( PathElement.sequenceElement(), PathElement.sequenceElement(), PathElement.groupElement("elem")), checker); } @Test(dataProvider = "matrixElements") public void testPaddedMatrixAccessByIndexSeq(Function viewFactory, MemoryLayout elemLayout, MatrixChecker checker) { SequenceLayout seq = MemoryLayout.sequenceLayout(20, MemoryLayout.sequenceLayout(10, MemoryLayout.sequenceLayout(2, elemLayout))); testMatrixAccessInternal(viewFactory, seq, seq.varHandle( PathElement.sequenceElement(), PathElement.sequenceElement(), PathElement.sequenceElement(1)), checker); } private void testMatrixAccessInternal(Function viewFactory, SequenceLayout seq, VarHandle handle, MatrixChecker checker) { MemorySegment outer_segment; try (Arena arena = Arena.ofConfined()) { MemorySegment segment = viewFactory.apply(arena.allocate(seq)); boolean isRO = segment.isReadOnly(); try { for (int i = 0; i < seq.elementCount(); i++) { for (int j = 0; j < ((SequenceLayout) seq.elementLayout()).elementCount(); j++) { checker.check(handle, segment, i, j); } } if (isRO) { throw new AssertionError(); //not ok, memory should be immutable } } catch (IllegalArgumentException ex) { if (!isRO) { throw new AssertionError(); //we should not have failed! } return; } try { checker.check(handle, segment, seq.elementCount(), ((SequenceLayout)seq.elementLayout()).elementCount()); throw new AssertionError(); //not ok, out of bounds } catch (IndexOutOfBoundsException ex) { //ok, should fail (out of bounds) } outer_segment = segment; //leak! } try { checker.check(handle, outer_segment, 0, 0); throw new AssertionError(); //not ok, session is closed } catch (IllegalStateException ex) { //ok, should fail (session is closed) } } static Function ID = Function.identity(); static Function IMMUTABLE = MemorySegment::asReadOnly; @DataProvider(name = "elements") public Object[][] createData() { return new Object[][] { //BE, RW { ID, ValueLayout.JAVA_BYTE, Checker.BYTE }, { ID, ValueLayout.JAVA_SHORT.withOrder(ByteOrder.BIG_ENDIAN), Checker.SHORT }, { ID, ValueLayout.JAVA_CHAR.withOrder(ByteOrder.BIG_ENDIAN), Checker.CHAR }, { ID, ValueLayout.JAVA_INT.withOrder(ByteOrder.BIG_ENDIAN), Checker.INT }, { ID, ValueLayout.JAVA_LONG.withOrder(ByteOrder.BIG_ENDIAN), Checker.LONG }, { ID, ValueLayout.JAVA_FLOAT.withOrder(ByteOrder.BIG_ENDIAN), Checker.FLOAT }, { ID, ValueLayout.JAVA_DOUBLE.withOrder(ByteOrder.BIG_ENDIAN), Checker.DOUBLE }, //BE, RO { IMMUTABLE, ValueLayout.JAVA_BYTE, Checker.BYTE }, { IMMUTABLE, ValueLayout.JAVA_SHORT.withOrder(ByteOrder.BIG_ENDIAN), Checker.SHORT }, { IMMUTABLE, ValueLayout.JAVA_CHAR.withOrder(ByteOrder.BIG_ENDIAN), Checker.CHAR }, { IMMUTABLE, ValueLayout.JAVA_INT.withOrder(ByteOrder.BIG_ENDIAN), Checker.INT }, { IMMUTABLE, ValueLayout.JAVA_LONG.withOrder(ByteOrder.BIG_ENDIAN), Checker.LONG }, { IMMUTABLE, ValueLayout.JAVA_FLOAT.withOrder(ByteOrder.BIG_ENDIAN), Checker.FLOAT }, { IMMUTABLE, ValueLayout.JAVA_DOUBLE.withOrder(ByteOrder.BIG_ENDIAN), Checker.DOUBLE }, //LE, RW { ID, ValueLayout.JAVA_BYTE, Checker.BYTE }, { ID, ValueLayout.JAVA_SHORT.withOrder(ByteOrder.LITTLE_ENDIAN), Checker.SHORT }, { ID, ValueLayout.JAVA_CHAR.withOrder(ByteOrder.LITTLE_ENDIAN), Checker.CHAR }, { ID, ValueLayout.JAVA_INT.withOrder(ByteOrder.LITTLE_ENDIAN), Checker.INT }, { ID, ValueLayout.JAVA_LONG.withOrder(ByteOrder.LITTLE_ENDIAN), Checker.LONG }, { ID, ValueLayout.JAVA_FLOAT.withOrder(ByteOrder.LITTLE_ENDIAN), Checker.FLOAT }, { ID, ValueLayout.JAVA_DOUBLE.withOrder(ByteOrder.LITTLE_ENDIAN), Checker.DOUBLE }, //LE, RO { IMMUTABLE, ValueLayout.JAVA_BYTE, Checker.BYTE }, { IMMUTABLE, ValueLayout.JAVA_SHORT.withOrder(ByteOrder.LITTLE_ENDIAN), Checker.SHORT }, { IMMUTABLE, ValueLayout.JAVA_CHAR.withOrder(ByteOrder.LITTLE_ENDIAN), Checker.CHAR }, { IMMUTABLE, ValueLayout.JAVA_INT.withOrder(ByteOrder.LITTLE_ENDIAN), Checker.INT }, { IMMUTABLE, ValueLayout.JAVA_LONG.withOrder(ByteOrder.LITTLE_ENDIAN), Checker.LONG }, { IMMUTABLE, ValueLayout.JAVA_FLOAT.withOrder(ByteOrder.LITTLE_ENDIAN), Checker.FLOAT }, { IMMUTABLE, ValueLayout.JAVA_DOUBLE.withOrder(ByteOrder.LITTLE_ENDIAN), Checker.DOUBLE }, }; } interface Checker { void check(VarHandle handle, MemorySegment segment); Checker BYTE = (handle, segment) -> { handle.set(segment, 0L, (byte)42); assertEquals(42, (byte)handle.get(segment, 0L)); }; Checker SHORT = (handle, segment) -> { handle.set(segment, 0L, (short)42); assertEquals(42, (short)handle.get(segment, 0L)); }; Checker CHAR = (handle, segment) -> { handle.set(segment, 0L, (char)42); assertEquals(42, (char)handle.get(segment, 0L)); }; Checker INT = (handle, segment) -> { handle.set(segment, 0L, 42); assertEquals(42, (int)handle.get(segment, 0L)); }; Checker LONG = (handle, segment) -> { handle.set(segment, 0L, (long)42); assertEquals(42, (long)handle.get(segment, 0L)); }; Checker FLOAT = (handle, segment) -> { handle.set(segment, 0L, (float)42); assertEquals((float)42, (float)handle.get(segment, 0L)); }; Checker DOUBLE = (handle, segment) -> { handle.set(segment, 0L, (double)42); assertEquals((double)42, (double)handle.get(segment, 0L)); }; } @DataProvider(name = "arrayElements") public Object[][] createArrayData() { return new Object[][] { //BE, RW { ID, ValueLayout.JAVA_BYTE, ArrayChecker.BYTE }, { ID, ValueLayout.JAVA_SHORT.withOrder(ByteOrder.BIG_ENDIAN), ArrayChecker.SHORT }, { ID, ValueLayout.JAVA_CHAR.withOrder(ByteOrder.BIG_ENDIAN), ArrayChecker.CHAR }, { ID, ValueLayout.JAVA_INT.withOrder(ByteOrder.BIG_ENDIAN), ArrayChecker.INT }, { ID, ValueLayout.JAVA_LONG.withOrder(ByteOrder.BIG_ENDIAN), ArrayChecker.LONG }, { ID, ValueLayout.JAVA_FLOAT.withOrder(ByteOrder.BIG_ENDIAN), ArrayChecker.FLOAT }, { ID, ValueLayout.JAVA_DOUBLE.withOrder(ByteOrder.BIG_ENDIAN), ArrayChecker.DOUBLE }, //BE, RO { IMMUTABLE, ValueLayout.JAVA_BYTE, ArrayChecker.BYTE }, { IMMUTABLE, ValueLayout.JAVA_SHORT.withOrder(ByteOrder.BIG_ENDIAN), ArrayChecker.SHORT }, { IMMUTABLE, ValueLayout.JAVA_CHAR.withOrder(ByteOrder.BIG_ENDIAN), ArrayChecker.CHAR }, { IMMUTABLE, ValueLayout.JAVA_INT.withOrder(ByteOrder.BIG_ENDIAN), ArrayChecker.INT }, { IMMUTABLE, ValueLayout.JAVA_LONG.withOrder(ByteOrder.BIG_ENDIAN), ArrayChecker.LONG }, { IMMUTABLE, ValueLayout.JAVA_FLOAT.withOrder(ByteOrder.BIG_ENDIAN), ArrayChecker.FLOAT }, { IMMUTABLE, ValueLayout.JAVA_DOUBLE.withOrder(ByteOrder.BIG_ENDIAN), ArrayChecker.DOUBLE }, //LE, RW { ID, ValueLayout.JAVA_BYTE, ArrayChecker.BYTE }, { ID, ValueLayout.JAVA_SHORT.withOrder(ByteOrder.LITTLE_ENDIAN), ArrayChecker.SHORT }, { ID, ValueLayout.JAVA_CHAR.withOrder(ByteOrder.LITTLE_ENDIAN), ArrayChecker.CHAR }, { ID, ValueLayout.JAVA_INT.withOrder(ByteOrder.LITTLE_ENDIAN), ArrayChecker.INT }, { ID, ValueLayout.JAVA_LONG.withOrder(ByteOrder.LITTLE_ENDIAN), ArrayChecker.LONG }, { ID, ValueLayout.JAVA_FLOAT.withOrder(ByteOrder.LITTLE_ENDIAN), ArrayChecker.FLOAT }, { ID, ValueLayout.JAVA_DOUBLE.withOrder(ByteOrder.LITTLE_ENDIAN), ArrayChecker.DOUBLE }, //LE, RO { IMMUTABLE, ValueLayout.JAVA_BYTE, ArrayChecker.BYTE }, { IMMUTABLE, ValueLayout.JAVA_SHORT.withOrder(ByteOrder.LITTLE_ENDIAN), ArrayChecker.SHORT }, { IMMUTABLE, ValueLayout.JAVA_CHAR.withOrder(ByteOrder.LITTLE_ENDIAN), ArrayChecker.CHAR }, { IMMUTABLE, ValueLayout.JAVA_INT.withOrder(ByteOrder.LITTLE_ENDIAN), ArrayChecker.INT }, { IMMUTABLE, ValueLayout.JAVA_LONG.withOrder(ByteOrder.LITTLE_ENDIAN), ArrayChecker.LONG }, { IMMUTABLE, ValueLayout.JAVA_FLOAT.withOrder(ByteOrder.LITTLE_ENDIAN), ArrayChecker.FLOAT }, { IMMUTABLE, ValueLayout.JAVA_DOUBLE.withOrder(ByteOrder.LITTLE_ENDIAN), ArrayChecker.DOUBLE }, }; } interface ArrayChecker { void check(VarHandle handle, MemorySegment segment, long index); ArrayChecker BYTE = (handle, segment, i) -> { handle.set(segment, 0L, i, (byte)i); assertEquals(i, (byte)handle.get(segment, 0L, i)); }; ArrayChecker SHORT = (handle, segment, i) -> { handle.set(segment, 0L, i, (short)i); assertEquals(i, (short)handle.get(segment, 0L, i)); }; ArrayChecker CHAR = (handle, segment, i) -> { handle.set(segment, 0L, i, (char)i); assertEquals(i, (char)handle.get(segment, 0L, i)); }; ArrayChecker INT = (handle, segment, i) -> { handle.set(segment, 0L, i, (int)i); assertEquals(i, (int)handle.get(segment, 0L, i)); }; ArrayChecker LONG = (handle, segment, i) -> { handle.set(segment, 0L, i, (long)i); assertEquals(i, (long)handle.get(segment, 0L, i)); }; ArrayChecker FLOAT = (handle, segment, i) -> { handle.set(segment, 0L, i, (float)i); assertEquals((float)i, (float)handle.get(segment, 0L, i)); }; ArrayChecker DOUBLE = (handle, segment, i) -> { handle.set(segment, 0L, i, (double)i); assertEquals((double)i, (double)handle.get(segment, 0L, i)); }; } @DataProvider(name = "matrixElements") public Object[][] createMatrixData() { return new Object[][] { //BE, RW { ID, ValueLayout.JAVA_BYTE, MatrixChecker.BYTE }, { ID, ValueLayout.JAVA_BOOLEAN, MatrixChecker.BOOLEAN }, { ID, ValueLayout.JAVA_SHORT.withOrder(ByteOrder.BIG_ENDIAN), MatrixChecker.SHORT }, { ID, ValueLayout.JAVA_CHAR.withOrder(ByteOrder.BIG_ENDIAN), MatrixChecker.CHAR }, { ID, ValueLayout.JAVA_INT.withOrder(ByteOrder.BIG_ENDIAN), MatrixChecker.INT }, { ID, ValueLayout.JAVA_LONG.withOrder(ByteOrder.BIG_ENDIAN), MatrixChecker.LONG }, { ID, ValueLayout.ADDRESS.withOrder(ByteOrder.BIG_ENDIAN), MatrixChecker.ADDR }, { ID, ValueLayout.JAVA_FLOAT.withOrder(ByteOrder.BIG_ENDIAN), MatrixChecker.FLOAT }, { ID, ValueLayout.JAVA_DOUBLE.withOrder(ByteOrder.BIG_ENDIAN), MatrixChecker.DOUBLE }, //BE, RO { IMMUTABLE, ValueLayout.JAVA_BYTE, MatrixChecker.BYTE }, { IMMUTABLE, ValueLayout.JAVA_BOOLEAN, MatrixChecker.BOOLEAN }, { IMMUTABLE, ValueLayout.JAVA_SHORT.withOrder(ByteOrder.BIG_ENDIAN), MatrixChecker.SHORT }, { IMMUTABLE, ValueLayout.JAVA_CHAR.withOrder(ByteOrder.BIG_ENDIAN), MatrixChecker.CHAR }, { IMMUTABLE, ValueLayout.JAVA_INT.withOrder(ByteOrder.BIG_ENDIAN), MatrixChecker.INT }, { IMMUTABLE, ValueLayout.JAVA_LONG.withOrder(ByteOrder.BIG_ENDIAN), MatrixChecker.LONG }, { IMMUTABLE, ValueLayout.ADDRESS.withOrder(ByteOrder.BIG_ENDIAN), MatrixChecker.ADDR }, { IMMUTABLE, ValueLayout.JAVA_FLOAT.withOrder(ByteOrder.BIG_ENDIAN), MatrixChecker.FLOAT }, { IMMUTABLE, ValueLayout.JAVA_DOUBLE.withOrder(ByteOrder.BIG_ENDIAN), MatrixChecker.DOUBLE }, //LE, RW { ID, ValueLayout.JAVA_BYTE, MatrixChecker.BYTE }, { ID, ValueLayout.JAVA_BOOLEAN, MatrixChecker.BOOLEAN }, { ID, ValueLayout.JAVA_SHORT.withOrder(ByteOrder.LITTLE_ENDIAN), MatrixChecker.SHORT }, { ID, ValueLayout.JAVA_CHAR.withOrder(ByteOrder.LITTLE_ENDIAN), MatrixChecker.CHAR }, { ID, ValueLayout.JAVA_INT.withOrder(ByteOrder.LITTLE_ENDIAN), MatrixChecker.INT }, { ID, ValueLayout.JAVA_LONG.withOrder(ByteOrder.LITTLE_ENDIAN), MatrixChecker.LONG }, { ID, ValueLayout.ADDRESS.withOrder(ByteOrder.LITTLE_ENDIAN), MatrixChecker.ADDR }, { ID, ValueLayout.JAVA_FLOAT.withOrder(ByteOrder.LITTLE_ENDIAN), MatrixChecker.FLOAT }, { ID, ValueLayout.JAVA_DOUBLE.withOrder(ByteOrder.LITTLE_ENDIAN), MatrixChecker.DOUBLE }, //LE, RO { IMMUTABLE, ValueLayout.JAVA_BYTE, MatrixChecker.BYTE }, { IMMUTABLE, ValueLayout.JAVA_BOOLEAN, MatrixChecker.BOOLEAN }, { IMMUTABLE, ValueLayout.JAVA_SHORT.withOrder(ByteOrder.LITTLE_ENDIAN), MatrixChecker.SHORT }, { IMMUTABLE, ValueLayout.JAVA_CHAR.withOrder(ByteOrder.LITTLE_ENDIAN), MatrixChecker.CHAR }, { IMMUTABLE, ValueLayout.JAVA_INT.withOrder(ByteOrder.LITTLE_ENDIAN), MatrixChecker.INT }, { IMMUTABLE, ValueLayout.JAVA_LONG.withOrder(ByteOrder.LITTLE_ENDIAN), MatrixChecker.LONG }, { IMMUTABLE, ValueLayout.ADDRESS.withOrder(ByteOrder.LITTLE_ENDIAN), MatrixChecker.ADDR }, { IMMUTABLE, ValueLayout.JAVA_FLOAT.withOrder(ByteOrder.LITTLE_ENDIAN), MatrixChecker.FLOAT }, { IMMUTABLE, ValueLayout.JAVA_DOUBLE.withOrder(ByteOrder.LITTLE_ENDIAN), MatrixChecker.DOUBLE }, }; } interface MatrixChecker { void check(VarHandle handle, MemorySegment segment, long row, long col); MatrixChecker BYTE = (handle, segment, r, c) -> { handle.set(segment, 0L, r, c, (byte)(r + c)); assertEquals(r + c, (byte)handle.get(segment, 0L, r, c)); }; MatrixChecker BOOLEAN = (handle, segment, r, c) -> { handle.set(segment, 0L, r, c, (r + c) != 0); assertEquals((r + c) != 0, (boolean)handle.get(segment, 0L, r, c)); }; MatrixChecker SHORT = (handle, segment, r, c) -> { handle.set(segment, 0L, r, c, (short)(r + c)); assertEquals(r + c, (short)handle.get(segment, 0L, r, c)); }; MatrixChecker CHAR = (handle, segment, r, c) -> { handle.set(segment, 0L, r, c, (char)(r + c)); assertEquals(r + c, (char)handle.get(segment, 0L, r, c)); }; MatrixChecker INT = (handle, segment, r, c) -> { handle.set(segment, 0L, r, c, (int)(r + c)); assertEquals(r + c, (int)handle.get(segment, 0L, r, c)); }; MatrixChecker LONG = (handle, segment, r, c) -> { handle.set(segment, 0L, r, c, r + c); assertEquals(r + c, (long)handle.get(segment, 0L, r, c)); }; MatrixChecker ADDR = (handle, segment, r, c) -> { handle.set(segment, 0L, r, c, MemorySegment.ofAddress(r + c)); assertEquals(MemorySegment.ofAddress(r + c), (MemorySegment) handle.get(segment, 0L, r, c)); }; MatrixChecker FLOAT = (handle, segment, r, c) -> { handle.set(segment, 0L, r, c, (float)(r + c)); assertEquals((float)(r + c), (float)handle.get(segment, 0L, r, c)); }; MatrixChecker DOUBLE = (handle, segment, r, c) -> { handle.set(segment, 0L, r, c, (double)(r + c)); assertEquals((double)(r + c), (double)handle.get(segment, 0L, r, c)); }; } }