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

Example 61 with FunctionDescriptor

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

the class StructTests method test_addLongAndLongsFromStruct.

@Test
public void test_addLongAndLongsFromStruct() throws Throwable {
    GroupLayout structLayout = MemoryLayout.ofStruct(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(long.class, long.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(longLayout, longLayout, structLayout);
    Symbol functionSymbol = nativeLib.lookup("addLongAndLongsFromStruct").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt = MemorySegment.allocateNative(structLayout);
    longHandle1.set(structSegmt, 1234567890L);
    longHandle2.set(structSegmt, 9876543210L);
    long result = (long) mh.invokeExact(2468024680L, structSegmt);
    Assert.assertEquals(result, 13579135780L);
    structSegmt.close();
}

Example 62 with FunctionDescriptor

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

the class StructTests method test_addIntAndIntsFromStruct.

@Test
public void test_addIntAndIntsFromStruct() 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, int.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_INT, C_INT, structLayout);
    Symbol functionSymbol = nativeLib.lookup("addIntAndIntsFromStruct").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt = MemorySegment.allocateNative(structLayout);
    intHandle1.set(structSegmt, 1122334);
    intHandle2.set(structSegmt, 1234567);
    int result = (int) mh.invokeExact(2244668, structSegmt);
    Assert.assertEquals(result, 4601569);
    structSegmt.close();
}

Example 63 with FunctionDescriptor

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

the class StructTests method test_addByteAndBytesFromStructWithNestedByteArray_withoutLayoutName.

@Test
public void test_addByteAndBytesFromStructWithNestedByteArray_withoutLayoutName() throws Throwable {
    SequenceLayout byteArray = MemoryLayout.ofSequence(2, C_CHAR);
    GroupLayout structLayout = MemoryLayout.ofStruct(byteArray, C_CHAR);
    MethodType mt = MethodType.methodType(byte.class, byte.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_CHAR, C_CHAR, structLayout);
    Symbol functionSymbol = nativeLib.lookup("addByteAndBytesFromStructWithNestedByteArray").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt = MemorySegment.allocateNative(structLayout);
    MemoryAccess.setByteAtOffset(structSegmt, 0, (byte) 11);
    MemoryAccess.setByteAtOffset(structSegmt, 1, (byte) 12);
    MemoryAccess.setByteAtOffset(structSegmt, 2, (byte) 13);
    byte result = (byte) mh.invokeExact((byte) 14, structSegmt);
    Assert.assertEquals(result, 50);
    structSegmt.close();
}

Example 64 with FunctionDescriptor

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

the class StructTests method test_addIntAndIntsFromStructWithNestedStructArray_withoutLayoutName.

@Test
public void test_addIntAndIntsFromStructWithNestedStructArray_withoutLayoutName() throws Throwable {
    GroupLayout intStruct = MemoryLayout.ofStruct(C_INT, C_INT);
    SequenceLayout structArray = MemoryLayout.ofSequence(2, intStruct);
    GroupLayout structLayout = MemoryLayout.ofStruct(structArray, C_INT);
    MethodType mt = MethodType.methodType(int.class, int.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_INT, C_INT, structLayout);
    Symbol functionSymbol = nativeLib.lookup("addIntAndIntsFromStructWithNestedStructArray").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt = MemorySegment.allocateNative(structLayout);
    MemoryAccess.setIntAtOffset(structSegmt, 0, 1111111);
    MemoryAccess.setIntAtOffset(structSegmt, 4, 2222222);
    MemoryAccess.setIntAtOffset(structSegmt, 8, 3333333);
    MemoryAccess.setIntAtOffset(structSegmt, 12, 4444444);
    MemoryAccess.setIntAtOffset(structSegmt, 16, 5555555);
    int result = (int) mh.invokeExact(6666666, structSegmt);
    Assert.assertEquals(result, 23333331);
    structSegmt.close();
}

Example 65 with FunctionDescriptor

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

the class StructTests method test_addBoolAndBoolsFromStructWithNestedBoolArray_reverseOrder.

@Test
public void test_addBoolAndBoolsFromStructWithNestedBoolArray_reverseOrder() throws Throwable {
    SequenceLayout intArray = MemoryLayout.ofSequence(2, C_INT);
    GroupLayout structLayout = MemoryLayout.ofStruct(C_INT.withName("elem1"), intArray.withName("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("addBoolAndBoolsFromStructWithNestedBoolArray_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);
    int result = (int) mh.invokeExact(0, structSegmt);
    Assert.assertEquals(result, 1);
    structSegmt.close();
}