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

Example 26 with FunctionDescriptor

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

the class StructTests method test_addByteAndBytesFromStructWithNestedStructArray_reverseOrder.

@Test
public void test_addByteAndBytesFromStructWithNestedStructArray_reverseOrder() throws Throwable {
    GroupLayout byteStruct = MemoryLayout.ofStruct(C_CHAR.withName("elem1"), C_CHAR.withName("elem2"));
    SequenceLayout structArray = MemoryLayout.ofSequence(2, byteStruct);
    GroupLayout structLayout = MemoryLayout.ofStruct(C_CHAR.withName("elem1"), structArray.withName("struct_array_elem2"), MemoryLayout.ofPaddingBits(C_CHAR.bitSize() * 3));
    MethodType mt = MethodType.methodType(byte.class, byte.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_CHAR, C_CHAR, structLayout);
    Symbol functionSymbol = nativeLib.lookup("addByteAndBytesFromStructWithNestedStructArray_reverseOrder").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt = MemorySegment.allocateNative(structLayout);
    MemoryAccess.setByteAtOffset(structSegmt, 0, (byte) 12);
    MemoryAccess.setByteAtOffset(structSegmt, 1, (byte) 14);
    MemoryAccess.setByteAtOffset(structSegmt, 2, (byte) 16);
    MemoryAccess.setByteAtOffset(structSegmt, 3, (byte) 18);
    MemoryAccess.setByteAtOffset(structSegmt, 4, (byte) 20);
    byte result = (byte) mh.invokeExact((byte) 22, structSegmt);
    Assert.assertEquals(result, 102);
    structSegmt.close();
}

Example 27 with FunctionDescriptor

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

the class StructTests method test_addIntAndShortIntFromStruct.

@Test
public void test_addIntAndShortIntFromStruct() throws Throwable {
    GroupLayout structLayout = MemoryLayout.ofStruct(C_SHORT.withName("elem1"), MemoryLayout.ofPaddingBits(C_SHORT.bitSize()), C_INT.withName("elem2"));
    VarHandle elemHandle1 = structLayout.varHandle(short.class, PathElement.groupElement("elem1"));
    VarHandle elemHandle2 = structLayout.varHandle(int.class, PathElement.groupElement("elem2"));
    MethodType mt = MethodType.methodType(int.class, int.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_INT, C_INT, structLayout);
    Symbol functionSymbol = nativeLib.lookup("addIntAndShortIntFromStruct").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt = MemorySegment.allocateNative(structLayout);
    elemHandle1.set(structSegmt, (short) 32766);
    elemHandle2.set(structSegmt, 22446688);
    int result = (int) mh.invokeExact(11335577, structSegmt);
    Assert.assertEquals(result, 33815031);
    structSegmt.close();
}

Example 28 with FunctionDescriptor

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

the class StructTests method test_addShortFromPointerAndShortsFromStruct.

@Test
public void test_addShortFromPointerAndShortsFromStruct() throws Throwable {
    GroupLayout structLayout = MemoryLayout.ofStruct(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(short.class, MemoryAddress.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_SHORT, C_POINTER, structLayout);
    Symbol functionSymbol = nativeLib.lookup("addShortFromPointerAndShortsFromStruct").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment shortSegmt = MemorySegment.allocateNative(C_SHORT);
    MemoryAccess.setShort(shortSegmt, (short) 12);
    MemorySegment structSegmt = MemorySegment.allocateNative(structLayout);
    shortHandle1.set(structSegmt, (short) 18);
    shortHandle2.set(structSegmt, (short) 19);
    short result = (short) mh.invokeExact(shortSegmt.address(), structSegmt);
    Assert.assertEquals(result, 49);
    shortSegmt.close();
    structSegmt.close();
}

Example 29 with FunctionDescriptor

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

the class StructTests method test_add2ByteStructs_returnStructPointer.

@Test
public void test_add2ByteStructs_returnStructPointer() throws Throwable {
    GroupLayout structLayout = MemoryLayout.ofStruct(C_CHAR.withName("elem1"), C_CHAR.withName("elem2"));
    VarHandle byteHandle1 = structLayout.varHandle(byte.class, PathElement.groupElement("elem1"));
    VarHandle byteHandle2 = structLayout.varHandle(byte.class, PathElement.groupElement("elem2"));
    MethodType mt = MethodType.methodType(MemoryAddress.class, MemoryAddress.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_POINTER, C_POINTER, structLayout);
    Symbol functionSymbol = nativeLib.lookup("add2ByteStructs_returnStructPointer").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt1 = MemorySegment.allocateNative(structLayout);
    byteHandle1.set(structSegmt1, (byte) 25);
    byteHandle2.set(structSegmt1, (byte) 11);
    MemorySegment structSegmt2 = MemorySegment.allocateNative(structLayout);
    byteHandle1.set(structSegmt2, (byte) 24);
    byteHandle2.set(structSegmt2, (byte) 13);
    MemoryAddress resultAddr = (MemoryAddress) mh.invokeExact(structSegmt1.address(), structSegmt2);
    MemorySegment resultSegmt = resultAddr.asSegmentRestricted(structLayout.byteSize());
    Assert.assertEquals((byte) byteHandle1.get(resultSegmt), (byte) 49);
    Assert.assertEquals((byte) byteHandle2.get(resultSegmt), (byte) 24);
    structSegmt1.close();
    structSegmt2.close();
    resultSegmt.close();
}

Example 30 with FunctionDescriptor

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

the class StructTests method test_addLongAndLongsFromNestedStruct_withoutLayoutName.

@Test
public void test_addLongAndLongsFromNestedStruct_withoutLayoutName() throws Throwable {
    GroupLayout nestedStructLayout = MemoryLayout.ofStruct(longLayout, longLayout);
    GroupLayout structLayout = MemoryLayout.ofStruct(longLayout, nestedStructLayout);
    MethodType mt = MethodType.methodType(long.class, long.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(longLayout, longLayout, structLayout);
    Symbol functionSymbol = nativeLib.lookup("addLongAndLongsFromNestedStruct").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt = MemorySegment.allocateNative(structLayout);
    MemoryAccess.setLongAtOffset(structSegmt, 0, 135791357913L);
    MemoryAccess.setLongAtOffset(structSegmt, 8, 246802468024L);
    MemoryAccess.setLongAtOffset(structSegmt, 16, 112233445566L);
    long result = (long) mh.invokeExact(778899001122L, structSegmt);
    Assert.assertEquals(result, 1273726272625L);
    structSegmt.close();
}