Examples with MemoryAddress jdk.incubator.foreign.MemoryAddress used on opensource projects

Example 56 with MemoryAddress

use of jdk.incubator.foreign.MemoryAddress in project openj9 by eclipse.

the class PrimitiveTypeTests1 method test_memoryAllocFreeFromDefaultLib_1.

@Test
public void test_memoryAllocFreeFromDefaultLib_1() throws Throwable {
    /* Temporarily disable the default library loading on AIX till we figure out a way
		 * around to handle the case as the official implementation in OpenJDK17 doesn't
		 * help to load the static libray (libc.a).
		 */
    if (!isAixOS) {
        NativeSymbol allocSymbol = clinker.lookup("malloc").get();
        FunctionDescriptor allocFuncDesc = FunctionDescriptor.of(ADDRESS, JAVA_LONG);
        MethodHandle allocHandle = clinker.downcallHandle(allocSymbol, allocFuncDesc);
        MemoryAddress allocMemAddr = (MemoryAddress) allocHandle.invokeExact(10L);
        allocMemAddr.set(JAVA_INT, 0, 15);
        Assert.assertEquals(allocMemAddr.get(JAVA_INT, 0), 15);
        NativeSymbol freeSymbol = clinker.lookup("free").get();
        FunctionDescriptor freeFuncDesc = FunctionDescriptor.ofVoid(ADDRESS);
        MethodHandle freeHandle = clinker.downcallHandle(freeSymbol, freeFuncDesc);
        freeHandle.invoke(allocMemAddr);
    }
}

Example 57 with MemoryAddress

use of jdk.incubator.foreign.MemoryAddress in project openj9 by eclipse.

the class StructTests1 method test_addIntFromPointerAndIntsFromStruct_returnIntPointer_1.

@Test
public void test_addIntFromPointerAndIntsFromStruct_returnIntPointer_1() throws Throwable {
    GroupLayout structLayout = MemoryLayout.structLayout(JAVA_INT.withName("elem1"), JAVA_INT.withName("elem2"));
    VarHandle intHandle1 = structLayout.varHandle(PathElement.groupElement("elem1"));
    VarHandle intHandle2 = structLayout.varHandle(PathElement.groupElement("elem2"));
    FunctionDescriptor fd = FunctionDescriptor.of(ADDRESS, ADDRESS, structLayout);
    NativeSymbol functionSymbol = nativeLibLookup.lookup("addIntFromPointerAndIntsFromStruct_returnIntPointer").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, fd);
    try (ResourceScope scope = ResourceScope.newConfinedScope()) {
        SegmentAllocator allocator = SegmentAllocator.nativeAllocator(scope);
        MemorySegment intSegmt = allocator.allocate(JAVA_INT, 1122333);
        MemorySegment structSegmt = allocator.allocate(structLayout);
        intHandle1.set(structSegmt, 4455666);
        intHandle2.set(structSegmt, 7788999);
        MemoryAddress resultAddr = (MemoryAddress) mh.invoke(intSegmt, structSegmt);
        Assert.assertEquals(resultAddr.get(JAVA_INT, 0), 13366998);
        Assert.assertEquals(resultAddr.toRawLongValue(), intSegmt.address().toRawLongValue());
    }
}

Example 58 with MemoryAddress

use of jdk.incubator.foreign.MemoryAddress in project openj9 by eclipse.

the class StructTests2 method test_addLongFromPointerAndLongsFromStruct_returnLongPointer_2.

@Test
public void test_addLongFromPointerAndLongsFromStruct_returnLongPointer_2() throws Throwable {
    GroupLayout structLayout = MemoryLayout.structLayout(longLayout.withName("elem1"), longLayout.withName("elem2"));
    VarHandle longHandle1 = structLayout.varHandle(long.class, PathElement.groupElement("elem1"));
    VarHandle longHandle2 = structLayout.varHandle(long.class, PathElement.groupElement("elem2"));
    MethodType mt = MethodType.methodType(MemoryAddress.class, MemoryAddress.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_POINTER, C_POINTER, structLayout);
    Addressable functionSymbol = nativeLibLookup.lookup("addLongFromPointerAndLongsFromStruct_returnLongPointer").get();
    MethodHandle mh = clinker.downcallHandle(mt, fd);
    try (ResourceScope scope = ResourceScope.newConfinedScope()) {
        SegmentAllocator allocator = SegmentAllocator.ofScope(scope);
        MemorySegment longSegmt = allocator.allocate(longLayout);
        MemoryAccess.setLong(longSegmt, 1122334455L);
        MemorySegment structSegmt = allocator.allocate(structLayout);
        longHandle1.set(structSegmt, 6677889900L);
        longHandle2.set(structSegmt, 1234567890L);
        MemoryAddress resultAddr = (MemoryAddress) mh.invokeExact(functionSymbol, longSegmt.address(), structSegmt);
        MemorySegment resultSegmt = resultAddr.asSegment(longLayout.byteSize(), scope);
        VarHandle longHandle = MemoryHandles.varHandle(long.class, ByteOrder.nativeOrder());
        long result = (long) longHandle.get(resultSegmt, 0);
        Assert.assertEquals(result, 9034792245L);
        Assert.assertEquals(resultSegmt.address().toRawLongValue(), longSegmt.address().toRawLongValue());
    }
}

Example 59 with MemoryAddress

use of jdk.incubator.foreign.MemoryAddress in project openj9 by eclipse.

the class StructTests2 method test_addShortFromPointerAndShortsFromStruct_returnShortPointer_2.

@Test
public void test_addShortFromPointerAndShortsFromStruct_returnShortPointer_2() throws Throwable {
    GroupLayout structLayout = MemoryLayout.structLayout(C_SHORT.withName("elem1"), C_SHORT.withName("elem2"));
    VarHandle shortHandle1 = structLayout.varHandle(short.class, PathElement.groupElement("elem1"));
    VarHandle shortHandle2 = structLayout.varHandle(short.class, PathElement.groupElement("elem2"));
    MethodType mt = MethodType.methodType(MemoryAddress.class, MemoryAddress.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_POINTER, C_POINTER, structLayout);
    Addressable functionSymbol = nativeLibLookup.lookup("addShortFromPointerAndShortsFromStruct_returnShortPointer").get();
    MethodHandle mh = clinker.downcallHandle(mt, fd);
    try (ResourceScope scope = ResourceScope.newConfinedScope()) {
        SegmentAllocator allocator = SegmentAllocator.ofScope(scope);
        MemorySegment shortSegmt = allocator.allocate(C_SHORT);
        MemoryAccess.setShort(shortSegmt, (short) 12);
        MemorySegment structSegmt = allocator.allocate(structLayout);
        shortHandle1.set(structSegmt, (short) 18);
        shortHandle2.set(structSegmt, (short) 19);
        MemoryAddress resultAddr = (MemoryAddress) mh.invokeExact(functionSymbol, shortSegmt.address(), structSegmt);
        MemorySegment resultSegmt = resultAddr.asSegment(C_SHORT.byteSize(), scope);
        VarHandle shortHandle = MemoryHandles.varHandle(short.class, ByteOrder.nativeOrder());
        short result = (short) shortHandle.get(resultSegmt, 0);
        Assert.assertEquals(result, 49);
        Assert.assertEquals(resultSegmt.address().toRawLongValue(), shortSegmt.address().toRawLongValue());
    }
}

Example 60 with MemoryAddress

use of jdk.incubator.foreign.MemoryAddress in project openj9 by eclipse.

the class StructTests1 method test_addLongFromPointerAndLongsFromStruct_returnLongPointer_1.

@Test
public void test_addLongFromPointerAndLongsFromStruct_returnLongPointer_1() throws Throwable {
    GroupLayout structLayout = MemoryLayout.structLayout(JAVA_LONG.withName("elem1"), JAVA_LONG.withName("elem2"));
    VarHandle longHandle1 = structLayout.varHandle(PathElement.groupElement("elem1"));
    VarHandle longHandle2 = structLayout.varHandle(PathElement.groupElement("elem2"));
    FunctionDescriptor fd = FunctionDescriptor.of(ADDRESS, ADDRESS, structLayout);
    NativeSymbol functionSymbol = nativeLibLookup.lookup("addLongFromPointerAndLongsFromStruct_returnLongPointer").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, fd);
    try (ResourceScope scope = ResourceScope.newConfinedScope()) {
        SegmentAllocator allocator = SegmentAllocator.nativeAllocator(scope);
        MemorySegment longSegmt = allocator.allocate(JAVA_LONG, 1122334455L);
        MemorySegment structSegmt = allocator.allocate(structLayout);
        longHandle1.set(structSegmt, 6677889900L);
        longHandle2.set(structSegmt, 1234567890L);
        MemoryAddress resultAddr = (MemoryAddress) mh.invoke(longSegmt, structSegmt);
        Assert.assertEquals(resultAddr.get(JAVA_LONG, 0), 9034792245L);
        Assert.assertEquals(resultAddr.toRawLongValue(), longSegmt.address().toRawLongValue());
    }
}