/*
* Copyright ( c ) 2021 , 2022 , 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 ) .
*
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* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
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/*
* @ test
* @ enablePreview
* @ requires ( ( os . arch = = " amd64 " | os . arch = = " x86_64 " ) & sun . arch . data . model = = " 64 " ) | os . arch = = " aarch64 "
* @ run testng / othervm - - enable - native - access = ALL - UNNAMED SafeFunctionAccessTest
*/
import java.lang.foreign.Arena;
import java.lang.foreign.Linker;
import java.lang.foreign.FunctionDescriptor;
import java.lang.foreign.MemorySegment;
import java.lang.foreign.MemoryLayout;
import java.lang.foreign.SegmentScope;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import java.lang.foreign.VaList;
import java.util.stream.Stream;
import org.testng.annotations.*;
import static org.testng.Assert .*;
public class SafeFunctionAccessTest extends NativeTestHelper {
static {
System.loadLibrary("SafeAccess" );
}
static MemoryLayout POINT = MemoryLayout.structLayout(
C_INT, C_INT
);
@Test(expectedExceptions = IllegalStateException.class )
public void testClosedStruct() throws Throwable {
MemorySegment segment;
try (Arena arena = Arena.openConfined()) {
segment = arena.allocate(POINT);
}
assertFalse(segment.scope().isAlive());
MethodHandle handle = Linker.nativeLinker().downcallHandle(
findNativeOrThrow("struct_func" ),
FunctionDescriptor.ofVoid(POINT));
handle.invokeExact(segment);
}
@Test
public void testClosedStructAddr_6() throws Throwable {
MethodHandle handle = Linker.nativeLinker().downcallHandle(
findNativeOrThrow("addr_func_6" ),
FunctionDescriptor.ofVoid(C_POINTER, C_POINTER, C_POINTER, C_POINTER, C_POINTER, C_POINTER));
record Allocation(Arena drop, MemorySegment segment) {
static Allocation of(MemoryLayout layout) {
Arena arena = Arena.openShared();
return new Allocation(arena, arena.allocate(layout));
}
}
for (int i = 0 ; i < 6 ; i++) {
Allocation[] allocations = new Allocation[]{
Allocation.of(POINT),
Allocation.of(POINT),
Allocation.of(POINT),
Allocation.of(POINT),
Allocation.of(POINT),
Allocation.of(POINT)
};
// check liveness
allocations[i].drop().close();
for (int j = 0 ; j < 6 ; j++) {
if (i == j) {
assertFalse(allocations[j].drop().scope().isAlive());
} else {
assertTrue(allocations[j].drop().scope().isAlive());
}
}
try {
handle.invokeWithArguments(Stream.of(allocations).map(Allocation::segment).toArray());
fail();
} catch (IllegalStateException ex) {
assertTrue(ex.getMessage().contains("Already closed" ));
}
for (int j = 0 ; j < 6 ; j++) {
if (i != j) {
allocations[j].drop().close(); // should succeed!
}
}
}
}
@Test(expectedExceptions = IllegalStateException.class )
public void testClosedVaList() throws Throwable {
VaList list;
try (Arena arena = Arena.openConfined()) {
list = VaList.make(b -> b.addVarg(C_INT, 42 ), arena.scope());
}
assertFalse(list.segment().scope().isAlive());
MethodHandle handle = Linker.nativeLinker().downcallHandle(
findNativeOrThrow("addr_func" ),
FunctionDescriptor.ofVoid(C_POINTER));
handle.invokeExact(list.segment());
}
@Test(expectedExceptions = IllegalStateException.class )
public void testClosedUpcall() throws Throwable {
MemorySegment upcall;
try (Arena arena = Arena.openConfined()) {
MethodHandle dummy = MethodHandles.lookup().findStatic(SafeFunctionAccessTest.class , "dummy" , MethodType.methodType(void .class ));
upcall = Linker.nativeLinker().upcallStub(dummy, FunctionDescriptor.ofVoid(), arena.scope());
}
assertFalse(upcall.scope().isAlive());
MethodHandle handle = Linker.nativeLinker().downcallHandle(
findNativeOrThrow("addr_func" ),
FunctionDescriptor.ofVoid(C_POINTER));
handle.invokeExact(upcall);
}
static void dummy() { }
@Test
public void testClosedVaListCallback() throws Throwable {
MethodHandle handle = Linker.nativeLinker().downcallHandle(
findNativeOrThrow("addr_func_cb" ),
FunctionDescriptor.ofVoid(C_POINTER, C_POINTER));
try (Arena arena = Arena.openConfined()) {
VaList list = VaList.make(b -> b.addVarg(C_INT, 42 ), arena.scope());
handle.invokeExact(list.segment(), sessionChecker(arena));
}
}
@Test
public void testClosedStructCallback() throws Throwable {
MethodHandle handle = Linker.nativeLinker().downcallHandle(
findNativeOrThrow("addr_func_cb" ),
FunctionDescriptor.ofVoid(C_POINTER, C_POINTER));
try (Arena arena = Arena.openConfined()) {
MemorySegment segment = arena.allocate(POINT);
handle.invokeExact(segment, sessionChecker(arena));
}
}
@Test
public void testClosedUpcallCallback() throws Throwable {
MethodHandle handle = Linker.nativeLinker().downcallHandle(
findNativeOrThrow("addr_func_cb" ),
FunctionDescriptor.ofVoid(C_POINTER, C_POINTER));
try (Arena arena = Arena.openConfined()) {
MethodHandle dummy = MethodHandles.lookup().findStatic(SafeFunctionAccessTest.class , "dummy" , MethodType.methodType(void .class ));
MemorySegment upcall = Linker.nativeLinker().upcallStub(dummy, FunctionDescriptor.ofVoid(), arena.scope());
handle.invokeExact(upcall, sessionChecker(arena));
}
}
MemorySegment sessionChecker(Arena arena) {
try {
MethodHandle handle = MethodHandles.lookup().findStatic(SafeFunctionAccessTest.class , "checkSession" ,
MethodType.methodType(void .class , Arena.class ));
handle = handle.bindTo(arena);
return Linker.nativeLinker().upcallStub(handle, FunctionDescriptor.ofVoid(), SegmentScope.auto());
} catch (Throwable ex) {
throw new AssertionError(ex);
}
}
static void checkSession(Arena arena) {
try {
arena.close();
fail("Session closed unexpectedly!" );
} catch (IllegalStateException ex) {
assertTrue(ex.getMessage().contains("acquired" )); //if acquired, fine
}
}
}
Messung V0.5 in Prozent C=95 H=88 G=91
¤ Dauer der Verarbeitung: 0.13 Sekunden
(vorverarbeitet am 2026-06-10)
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