208 lines
8.8 KiB
Java
208 lines
8.8 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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* @run testng/othervm --enable-native-access=ALL-UNNAMED TestAddressDereference
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*/
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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.MemorySegment;
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import java.lang.foreign.SymbolLookup;
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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.MethodHandles;
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import java.lang.invoke.MethodType;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import org.testng.annotations.*;
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import static org.testng.Assert.*;
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public class TestAddressDereference extends UpcallTestHelper {
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static final Linker LINKER = Linker.nativeLinker();
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static final MemorySegment GET_ADDR_SYM;
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static final MethodHandle GET_ADDR_CB_HANDLE, TEST_ARG_HANDLE;
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static {
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System.loadLibrary("AddressDereference");
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GET_ADDR_SYM = SymbolLookup.loaderLookup().find("get_addr").get();
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GET_ADDR_CB_HANDLE = LINKER.downcallHandle(
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SymbolLookup.loaderLookup().find("get_addr_cb").get(),
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FunctionDescriptor.ofVoid(ValueLayout.ADDRESS, ValueLayout.ADDRESS));
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try {
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TEST_ARG_HANDLE = MethodHandles.lookup().findStatic(TestAddressDereference.class, "testArg",
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MethodType.methodType(void.class, MemorySegment.class, long.class));
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} catch (Throwable ex) {
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throw new AssertionError(ex);
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}
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}
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@Test(dataProvider = "layoutsAndAlignments")
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public void testGetAddress(long alignment, ValueLayout layout) {
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boolean badAlign = layout.byteAlignment() > alignment;
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try (Arena arena = Arena.ofConfined()) {
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MemorySegment segment = arena.allocate(ValueLayout.ADDRESS);
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segment.set(ValueLayout.ADDRESS, 0, MemorySegment.ofAddress(alignment));
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MemorySegment deref = segment.get(ValueLayout.ADDRESS.withTargetLayout(layout), 0);
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assertFalse(badAlign);
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assertEquals(deref.byteSize(), layout.byteSize());
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} catch (IllegalArgumentException ex) {
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assertTrue(badAlign);
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assertTrue(ex.getMessage().contains("alignment constraint for address"));
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}
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}
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@Test(dataProvider = "layoutsAndAlignments")
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public void testGetAddressIndex(long alignment, ValueLayout layout) {
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boolean badAlign = layout.byteAlignment() > alignment;
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try (Arena arena = Arena.ofConfined()) {
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MemorySegment segment = arena.allocate(ValueLayout.ADDRESS);
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segment.set(ValueLayout.ADDRESS, 0, MemorySegment.ofAddress(alignment));
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MemorySegment deref = segment.getAtIndex(ValueLayout.ADDRESS.withTargetLayout(layout), 0);
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assertFalse(badAlign);
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assertEquals(deref.byteSize(), layout.byteSize());
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} catch (IllegalArgumentException ex) {
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assertTrue(badAlign);
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assertTrue(ex.getMessage().contains("alignment constraint for address"));
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}
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}
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@Test(dataProvider = "layoutsAndAlignments")
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public void testNativeReturn(long alignment, ValueLayout layout) throws Throwable {
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boolean badAlign = layout.byteAlignment() > alignment;
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try {
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MethodHandle get_addr_handle = LINKER.downcallHandle(GET_ADDR_SYM,
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FunctionDescriptor.of(ValueLayout.ADDRESS.withTargetLayout(layout), ValueLayout.ADDRESS));
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MemorySegment deref = (MemorySegment)get_addr_handle.invokeExact(MemorySegment.ofAddress(alignment));
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assertFalse(badAlign);
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assertEquals(deref.byteSize(), layout.byteSize());
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} catch (IllegalArgumentException ex) {
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assertTrue(badAlign);
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assertTrue(ex.getMessage().contains("alignment constraint for address"));
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}
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}
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@Test(dataProvider = "layoutsAndAlignments")
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public void testNativeUpcallArgPos(long alignment, ValueLayout layout) throws Throwable {
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boolean badAlign = layout.byteAlignment() > alignment;
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if (badAlign) return; // this will crash the JVM (exception occurs when going into the upcall stub)
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try (Arena arena = Arena.ofConfined()) {
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FunctionDescriptor testDesc = FunctionDescriptor.ofVoid(ValueLayout.ADDRESS.withTargetLayout(layout));
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MethodHandle upcallHandle = MethodHandles.insertArguments(TEST_ARG_HANDLE, 1, layout.byteSize());
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MemorySegment testStub = LINKER.upcallStub(upcallHandle, testDesc, arena);
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GET_ADDR_CB_HANDLE.invokeExact(MemorySegment.ofAddress(alignment), testStub);
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}
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}
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@Test(dataProvider = "layoutsAndAlignments")
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public void testNativeUpcallArgNeg(long alignment, ValueLayout layout) throws Throwable {
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boolean badAlign = layout.byteAlignment() > alignment;
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if (!badAlign) return;
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runInNewProcess(UpcallTestRunner.class, true,
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new String[] {Long.toString(alignment), layout.toString() })
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.shouldNotHaveExitValue(0)
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.stderrShouldContain("alignment constraint for address");
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}
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public static class UpcallTestRunner {
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public static void main(String[] args) throws Throwable {
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long alignment = parseAlignment(args[0]);
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ValueLayout layout = parseLayout(args[1]);
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try (Arena arena = Arena.ofConfined()) {
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FunctionDescriptor testDesc = FunctionDescriptor.ofVoid(ValueLayout.ADDRESS.withTargetLayout(layout));
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MethodHandle upcallHandle = MethodHandles.insertArguments(TEST_ARG_HANDLE, 1, layout.byteSize());
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MemorySegment testStub = LINKER.upcallStub(upcallHandle, testDesc, arena);
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GET_ADDR_CB_HANDLE.invokeExact(MemorySegment.ofAddress(alignment), testStub);
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}
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}
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static long parseAlignment(String s) {
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return Long.parseLong(s);
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}
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static ValueLayout parseLayout(String s) {
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return LayoutKind.parse(s).layout;
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}
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}
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static void testArg(MemorySegment deref, long expectedSize) {
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assertEquals(deref.byteSize(), expectedSize);
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}
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@DataProvider(name = "layoutsAndAlignments")
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static Object[][] layoutsAndAlignments() {
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List<Object[]> layoutsAndAlignments = new ArrayList<>();
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for (LayoutKind lk : LayoutKind.values()) {
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for (int align : new int[]{ 1, 2, 4, 8 }) {
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layoutsAndAlignments.add(new Object[] { align, lk.layout });
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}
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}
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return layoutsAndAlignments.toArray(Object[][]::new);
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}
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enum LayoutKind {
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BOOL(ValueLayout.JAVA_BOOLEAN),
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CHAR(ValueLayout.JAVA_CHAR),
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SHORT(ValueLayout.JAVA_SHORT),
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INT(ValueLayout.JAVA_INT),
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FLOAT(ValueLayout.JAVA_FLOAT),
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LONG(ValueLayout.JAVA_LONG),
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DOUBLE(ValueLayout.JAVA_DOUBLE),
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ADDRESS(ValueLayout.ADDRESS);
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final ValueLayout layout;
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LayoutKind(ValueLayout segment) {
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this.layout = segment;
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}
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private static final Pattern LAYOUT_PATTERN = Pattern.compile("^(?<align>\\d+%)?(?<char>[azcsifjdAZCSIFJD])\\d+$");
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static LayoutKind parse(String layoutString) {
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Matcher matcher = LAYOUT_PATTERN.matcher(layoutString);
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if (matcher.matches()) {
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switch (matcher.group("char")) {
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case "A","a": return ADDRESS;
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case "z","Z": return BOOL;
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case "c","C": return CHAR;
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case "s","S": return SHORT;
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case "i","I": return INT;
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case "f","F": return FLOAT;
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case "j","J": return LONG;
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case "d","D": return DOUBLE;
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};
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}
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throw new AssertionError("Invalid layout string: " + layoutString);
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}
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}
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}
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