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

Example 11 with FunctionDescriptor

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

the class StructTests method test_addShortAndShortsFromNestedStruct.

@Test
public void test_addShortAndShortsFromNestedStruct() throws Throwable {
    GroupLayout nestedStructLayout = MemoryLayout.ofStruct(C_SHORT.withName("elem1"), C_SHORT.withName("elem2"));
    GroupLayout structLayout = MemoryLayout.ofStruct(nestedStructLayout.withName("struct_elem1"), C_SHORT.withName("elem2"), MemoryLayout.ofPaddingBits(C_SHORT.bitSize()));
    MethodType mt = MethodType.methodType(short.class, short.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_SHORT, C_SHORT, structLayout);
    Symbol functionSymbol = nativeLib.lookup("addShortAndShortsFromNestedStruct").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt = MemorySegment.allocateNative(structLayout);
    MemoryAccess.setShortAtOffset(structSegmt, 0, (short) 31);
    MemoryAccess.setShortAtOffset(structSegmt, 2, (short) 33);
    MemoryAccess.setShortAtOffset(structSegmt, 4, (short) 35);
    short result = (short) mh.invokeExact((short) 37, structSegmt);
    Assert.assertEquals(result, 136);
    structSegmt.close();
}

Example 12 with FunctionDescriptor

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

the class StructTests method test_addFloatAndFloatsFromStructWithNestedFloatArray_reverseOrder.

@Test
public void test_addFloatAndFloatsFromStructWithNestedFloatArray_reverseOrder() throws Throwable {
    SequenceLayout floatArray = MemoryLayout.ofSequence(2, C_FLOAT);
    GroupLayout structLayout = MemoryLayout.ofStruct(C_FLOAT.withName("elem1"), floatArray.withName("array_elem2"));
    MethodType mt = MethodType.methodType(float.class, float.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_FLOAT, C_FLOAT, structLayout);
    Symbol functionSymbol = nativeLib.lookup("addFloatAndFloatsFromStructWithNestedFloatArray_reverseOrder").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt = MemorySegment.allocateNative(structLayout);
    MemoryAccess.setFloatAtOffset(structSegmt, 0, 111.11F);
    MemoryAccess.setFloatAtOffset(structSegmt, 4, 222.22F);
    MemoryAccess.setFloatAtOffset(structSegmt, 8, 333.33F);
    float result = (float) mh.invokeExact(444.44F, structSegmt);
    Assert.assertEquals(result, 1111.1F, 0.01F);
    structSegmt.close();
}

Example 13 with FunctionDescriptor

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

the class StructTests method test_addBoolAndBoolsFromStructWithNestedStructArray_reverseOrder.

@Test
public void test_addBoolAndBoolsFromStructWithNestedStructArray_reverseOrder() throws Throwable {
    GroupLayout intStruct = MemoryLayout.ofStruct(C_INT.withName("elem1"), C_INT.withName("elem2"));
    SequenceLayout structArray = MemoryLayout.ofSequence(2, intStruct);
    GroupLayout structLayout = MemoryLayout.ofStruct(C_INT.withName("elem1"), structArray.withName("struct_array_elem2"));
    MethodType mt = MethodType.methodType(int.class, int.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_INT, C_INT, structLayout);
    Symbol functionSymbol = nativeLib.lookup("addBoolAndBoolsFromStructWithNestedStructArray_reverseOrder").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt = MemorySegment.allocateNative(structLayout);
    MemoryAccess.setIntAtOffset(structSegmt, 0, 0);
    MemoryAccess.setIntAtOffset(structSegmt, 4, 1);
    MemoryAccess.setIntAtOffset(structSegmt, 8, 0);
    MemoryAccess.setIntAtOffset(structSegmt, 12, 1);
    MemoryAccess.setIntAtOffset(structSegmt, 16, 0);
    int result = (int) mh.invokeExact(1, structSegmt);
    Assert.assertEquals(result, 1);
    structSegmt.close();
}

Example 14 with FunctionDescriptor

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

the class StructTests method test_addCharAndCharsFromStructWithNestedCharArray_reverseOrder.

@Test
public void test_addCharAndCharsFromStructWithNestedCharArray_reverseOrder() throws Throwable {
    SequenceLayout charArray = MemoryLayout.ofSequence(2, C_SHORT);
    GroupLayout structLayout = MemoryLayout.ofStruct(C_SHORT.withName("elem1"), charArray.withName("array_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_reverseOrder").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 15 with FunctionDescriptor

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

the class StructTests method test_addDoubleFromPointerAndDoublesFromStruct.

@Test
public void test_addDoubleFromPointerAndDoublesFromStruct() throws Throwable {
    GroupLayout structLayout = MemoryLayout.ofStruct(C_DOUBLE.withName("elem1"), C_DOUBLE.withName("elem2"));
    VarHandle doubleHandle1 = structLayout.varHandle(double.class, PathElement.groupElement("elem1"));
    VarHandle doubleHandle2 = structLayout.varHandle(double.class, PathElement.groupElement("elem2"));
    MethodType mt = MethodType.methodType(double.class, MemoryAddress.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_DOUBLE, C_POINTER, structLayout);
    Symbol functionSymbol = nativeLib.lookup("addDoubleFromPointerAndDoublesFromStruct").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment doubleSegmt = MemorySegment.allocateNative(C_DOUBLE);
    MemoryAccess.setDouble(doubleSegmt, 112.123D);
    MemorySegment structSegmt = MemorySegment.allocateNative(structLayout);
    doubleHandle1.set(structSegmt, 118.456D);
    doubleHandle2.set(structSegmt, 119.789D);
    double result = (double) mh.invokeExact(doubleSegmt.address(), structSegmt);
    Assert.assertEquals(result, 350.368D, 0.001D);
    doubleSegmt.close();
    structSegmt.close();
}