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

Example 16 with FunctionDescriptor

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

the class StructTests method test_addIntFromPointerAndIntsFromStruct.

@Test
public void test_addIntFromPointerAndIntsFromStruct() throws Throwable {
    GroupLayout structLayout = MemoryLayout.ofStruct(C_INT.withName("elem1"), C_INT.withName("elem2"));
    VarHandle intHandle1 = structLayout.varHandle(int.class, PathElement.groupElement("elem1"));
    VarHandle intHandle2 = structLayout.varHandle(int.class, PathElement.groupElement("elem2"));
    MethodType mt = MethodType.methodType(int.class, MemoryAddress.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_INT, C_POINTER, structLayout);
    Symbol functionSymbol = nativeLib.lookup("addIntFromPointerAndIntsFromStruct").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment intSegmt = MemorySegment.allocateNative(C_INT);
    MemoryAccess.setInt(intSegmt, 7654321);
    MemorySegment structSegmt = MemorySegment.allocateNative(structLayout);
    intHandle1.set(structSegmt, 1234567);
    intHandle2.set(structSegmt, 2468024);
    int result = (int) mh.invokeExact(intSegmt.address(), structSegmt);
    Assert.assertEquals(result, 11356912);
    structSegmt.close();
    intSegmt.close();
}

Example 17 with FunctionDescriptor

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

the class StructTests method test_addCharAndCharsFromStructWithNestedCharArray.

@Test
public void test_addCharAndCharsFromStructWithNestedCharArray() throws Throwable {
    SequenceLayout charArray = MemoryLayout.ofSequence(2, C_SHORT);
    GroupLayout structLayout = MemoryLayout.ofStruct(charArray.withName("array_elem1"), C_SHORT.withName("elem2"), MemoryLayout.ofPaddingBits(C_SHORT.bitSize()));
    MethodType mt = MethodType.methodType(char.class, char.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_SHORT, C_SHORT, structLayout);
    Symbol functionSymbol = nativeLib.lookup("addCharAndCharsFromStructWithNestedCharArray").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt = MemorySegment.allocateNative(structLayout);
    MemoryAccess.setCharAtOffset(structSegmt, 0, 'A');
    MemoryAccess.setCharAtOffset(structSegmt, 2, 'B');
    MemoryAccess.setCharAtOffset(structSegmt, 4, 'C');
    char result = (char) mh.invokeExact('D', structSegmt);
    Assert.assertEquals(result, 'G');
    structSegmt.close();
}

Example 18 with FunctionDescriptor

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

the class StructTests method test_addShortAndShortsFromStructWithNestedStructArray.

@Test
public void test_addShortAndShortsFromStructWithNestedStructArray() throws Throwable {
    GroupLayout shortStruct = MemoryLayout.ofStruct(C_SHORT.withName("elem1"), C_SHORT.withName("elem2"));
    SequenceLayout structArray = MemoryLayout.ofSequence(2, shortStruct);
    GroupLayout structLayout = MemoryLayout.ofStruct(structArray.withName("struc_array_elem1"), C_SHORT.withName("elem2"));
    MethodType mt = MethodType.methodType(short.class, short.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_SHORT, C_SHORT, structLayout);
    Symbol functionSymbol = nativeLib.lookup("addShortAndShortsFromStructWithNestedStructArray").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt = MemorySegment.allocateNative(structLayout);
    MemoryAccess.setShortAtOffset(structSegmt, 0, (short) 111);
    MemoryAccess.setShortAtOffset(structSegmt, 2, (short) 222);
    MemoryAccess.setShortAtOffset(structSegmt, 4, (short) 333);
    MemoryAccess.setShortAtOffset(structSegmt, 6, (short) 444);
    MemoryAccess.setShortAtOffset(structSegmt, 8, (short) 555);
    short result = (short) mh.invokeExact((short) 666, structSegmt);
    Assert.assertEquals(result, 2331);
    structSegmt.close();
}

Example 19 with FunctionDescriptor

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

the class StructTests method test_add2IntStructs_returnStruct.

@Test
public void test_add2IntStructs_returnStruct() throws Throwable {
    GroupLayout structLayout = MemoryLayout.ofStruct(C_INT.withName("elem1"), C_INT.withName("elem2"));
    VarHandle intHandle1 = structLayout.varHandle(int.class, PathElement.groupElement("elem1"));
    VarHandle intHandle2 = structLayout.varHandle(int.class, PathElement.groupElement("elem2"));
    MethodType mt = MethodType.methodType(MemorySegment.class, MemorySegment.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(structLayout, structLayout, structLayout);
    Symbol functionSymbol = nativeLib.lookup("add2IntStructs_returnStruct").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt1 = MemorySegment.allocateNative(structLayout);
    intHandle1.set(structSegmt1, 11223344);
    intHandle2.set(structSegmt1, 55667788);
    MemorySegment structSegmt2 = MemorySegment.allocateNative(structLayout);
    intHandle1.set(structSegmt2, 99001122);
    intHandle2.set(structSegmt2, 33445566);
    MemorySegment resultSegmt = (MemorySegment) mh.invokeExact(structSegmt1, structSegmt2);
    Assert.assertEquals(intHandle1.get(resultSegmt), 110224466);
    Assert.assertEquals(intHandle2.get(resultSegmt), 89113354);
    structSegmt1.close();
    structSegmt2.close();
    resultSegmt.close();
}

Example 20 with FunctionDescriptor

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

the class StructTests method test_addByteAndBytesFromNestedStruct.

@Test
public void test_addByteAndBytesFromNestedStruct() throws Throwable {
    GroupLayout nestedStructLayout = MemoryLayout.ofStruct(C_CHAR.withName("elem1"), C_CHAR.withName("elem2"));
    GroupLayout structLayout = MemoryLayout.ofStruct(nestedStructLayout.withName("struct_elem1"), C_CHAR.withName("elem2"));
    MethodType mt = MethodType.methodType(byte.class, byte.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_CHAR, C_CHAR, structLayout);
    Symbol functionSymbol = nativeLib.lookup("addByteAndBytesFromNestedStruct").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt = MemorySegment.allocateNative(structLayout);
    MemoryAccess.setByteAtOffset(structSegmt, 0, (byte) 11);
    MemoryAccess.setByteAtOffset(structSegmt, 1, (byte) 22);
    MemoryAccess.setByteAtOffset(structSegmt, 2, (byte) 33);
    byte result = (byte) mh.invokeExact((byte) 46, structSegmt);
    Assert.assertEquals(result, 112);
    structSegmt.close();
}