183 lines
7.7 KiB
Java
183 lines
7.7 KiB
Java
/*
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* Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @library ../ /test/lib
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*
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* @run testng/othervm --enable-native-access=ALL-UNNAMED TestCritical
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*/
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import org.testng.annotations.DataProvider;
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import org.testng.annotations.Test;
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import java.lang.foreign.Arena;
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import java.lang.foreign.FunctionDescriptor;
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import java.lang.foreign.Linker;
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import java.lang.foreign.MemoryLayout;
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import java.lang.foreign.MemorySegment;
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import java.lang.foreign.SegmentAllocator;
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import java.lang.foreign.SequenceLayout;
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import java.lang.foreign.StructLayout;
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import java.lang.foreign.ValueLayout;
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import java.lang.invoke.MethodHandle;
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import java.lang.invoke.VarHandle;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.function.IntFunction;
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import java.util.stream.Stream;
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import static org.testng.Assert.assertEquals;
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public class TestCritical extends NativeTestHelper {
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static {
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System.loadLibrary("Critical");
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}
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@Test
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public void testEmpty() throws Throwable {
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MethodHandle handle = downcallHandle("empty", FunctionDescriptor.ofVoid(), Linker.Option.critical(false));
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handle.invokeExact();
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}
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@Test
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public void testIdentity() throws Throwable {
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MethodHandle handle = downcallHandle("identity", FunctionDescriptor.of(C_INT, C_INT), Linker.Option.critical(false));
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int result = (int) handle.invokeExact(42);
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assertEquals(result, 42);
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}
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@Test
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public void testWithReturnBuffer() throws Throwable {
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StructLayout bigLayout = MemoryLayout.structLayout(
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C_LONG_LONG.withName("x"),
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C_LONG_LONG.withName("y"));
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MethodHandle handle = downcallHandle("with_return_buffer", FunctionDescriptor.of(bigLayout), Linker.Option.critical(false));
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VarHandle vhX = bigLayout.varHandle(MemoryLayout.PathElement.groupElement("x"));
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VarHandle vhY = bigLayout.varHandle(MemoryLayout.PathElement.groupElement("y"));
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try (Arena arena = Arena.ofConfined()) {
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MemorySegment result = (MemorySegment) handle.invokeExact((SegmentAllocator) arena);
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long x = (long) vhX.get(result, 0L);
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assertEquals(x, 10);
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long y = (long) vhY.get(result, 0L);
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assertEquals(y, 11);
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}
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}
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public record AllowHeapCase(IntFunction<MemorySegment> newArraySegment, ValueLayout elementLayout,
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String fName, FunctionDescriptor fDesc, boolean readOnly) {}
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@Test(dataProvider = "allowHeapCases")
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public void testAllowHeap(AllowHeapCase testCase) throws Throwable {
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MethodHandle handle = downcallHandle(testCase.fName(), testCase.fDesc(), Linker.Option.critical(true));
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int elementCount = 10;
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MemorySegment heapSegment = testCase.newArraySegment().apply(elementCount);
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if (testCase.readOnly()) {
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heapSegment = heapSegment.asReadOnly();
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}
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SequenceLayout sequence = MemoryLayout.sequenceLayout(elementCount, testCase.elementLayout());
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try (Arena arena = Arena.ofConfined()) {
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TestValue[] tvs = genTestArgs(testCase.fDesc(), arena);
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Object[] args = Stream.of(tvs).map(TestValue::value).toArray();
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// inject our custom last three arguments
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args[args.length - 1] = (int) sequence.byteSize();
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TestValue sourceSegment = genTestValue(sequence, arena);
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args[args.length - 2] = sourceSegment.value();
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args[args.length - 3] = heapSegment;
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if (handle.type().parameterType(0) == SegmentAllocator.class) {
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Object[] newArgs = new Object[args.length + 1];
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newArgs[0] = arena;
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System.arraycopy(args, 0, newArgs, 1, args.length);
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args = newArgs;
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}
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Object o = handle.invokeWithArguments(args);
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if (o != null) {
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tvs[0].check(o);
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}
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// check that writes went through to array
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sourceSegment.check(heapSegment);
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}
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}
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@DataProvider
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public Object[][] allowHeapCases() {
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FunctionDescriptor voidDesc = FunctionDescriptor.ofVoid(C_POINTER, C_POINTER, C_INT);
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FunctionDescriptor intDesc = voidDesc.changeReturnLayout(C_INT).insertArgumentLayouts(0, C_INT);
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StructLayout L2 = MemoryLayout.structLayout(
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C_LONG_LONG.withName("x"),
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C_LONG_LONG.withName("y")
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);
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FunctionDescriptor L2Desc = voidDesc.changeReturnLayout(L2).insertArgumentLayouts(0, L2);
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StructLayout L3 = MemoryLayout.structLayout(
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C_LONG_LONG.withName("x"),
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C_LONG_LONG.withName("y"),
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C_LONG_LONG.withName("z")
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);
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FunctionDescriptor L3Desc = voidDesc.changeReturnLayout(L3).insertArgumentLayouts(0, L3);
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FunctionDescriptor stackDesc = voidDesc.insertArgumentLayouts(0,
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C_LONG_LONG, C_LONG_LONG, C_LONG_LONG, C_LONG_LONG,
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C_LONG_LONG, C_LONG_LONG, C_LONG_LONG, C_LONG_LONG,
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C_CHAR, C_SHORT, C_INT);
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List<AllowHeapCase> cases = new ArrayList<>();
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for (HeapSegmentFactory hsf : HeapSegmentFactory.values()) {
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cases.add(new AllowHeapCase(hsf.newArray, hsf.elementLayout, "test_allow_heap_void", voidDesc, false));
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cases.add(new AllowHeapCase(hsf.newArray, hsf.elementLayout, "test_allow_heap_int", intDesc, false));
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cases.add(new AllowHeapCase(hsf.newArray, hsf.elementLayout, "test_allow_heap_return_buffer", L2Desc, false));
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cases.add(new AllowHeapCase(hsf.newArray, hsf.elementLayout, "test_allow_heap_imr", L3Desc, false));
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cases.add(new AllowHeapCase(hsf.newArray, hsf.elementLayout, "test_allow_heap_void_stack", stackDesc, false));
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// readOnly
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cases.add(new AllowHeapCase(hsf.newArray, hsf.elementLayout, "test_allow_heap_void", voidDesc, true));
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}
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return cases.stream().map(e -> new Object[]{ e }).toArray(Object[][]::new);
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}
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private enum HeapSegmentFactory {
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BYTE(i -> MemorySegment.ofArray(new byte[i]), ValueLayout.JAVA_BYTE),
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SHORT(i -> MemorySegment.ofArray(new short[i]), ValueLayout.JAVA_SHORT),
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CHAR(i -> MemorySegment.ofArray(new char[i]), ValueLayout.JAVA_CHAR),
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INT(i -> MemorySegment.ofArray(new int[i]), ValueLayout.JAVA_INT),
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LONG(i -> MemorySegment.ofArray(new long[i]), ValueLayout.JAVA_LONG),
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FLOAT(i -> MemorySegment.ofArray(new float[i]), ValueLayout.JAVA_FLOAT),
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DOUBLE(i -> MemorySegment.ofArray(new double[i]), ValueLayout.JAVA_DOUBLE);
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IntFunction<MemorySegment> newArray;
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ValueLayout elementLayout;
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private HeapSegmentFactory(IntFunction<MemorySegment> newArray, ValueLayout elementLayout) {
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this.newArray = newArray;
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this.elementLayout = elementLayout;
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}
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}
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}
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