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

Example 6 with FunctionDescriptor

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

the class StructTests method test_addFloatAndFloatsFromStructWithNestedFloatArray_withoutLayoutName.

@Test
public void test_addFloatAndFloatsFromStructWithNestedFloatArray_withoutLayoutName() throws Throwable {
    SequenceLayout floatArray = MemoryLayout.ofSequence(2, C_FLOAT);
    GroupLayout structLayout = MemoryLayout.ofStruct(floatArray, C_FLOAT);
    MethodType mt = MethodType.methodType(float.class, float.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_FLOAT, C_FLOAT, structLayout);
    Symbol functionSymbol = nativeLib.lookup("addFloatAndFloatsFromStructWithNestedFloatArray").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 7 with FunctionDescriptor

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

the class StructTests method test_addFloatFromPointerAndFloatsFromStruct_returnFloatPointer.

@Test
public void test_addFloatFromPointerAndFloatsFromStruct_returnFloatPointer() throws Throwable {
    GroupLayout structLayout = MemoryLayout.ofStruct(C_FLOAT.withName("elem1"), C_FLOAT.withName("elem2"));
    VarHandle floatHandle1 = structLayout.varHandle(float.class, PathElement.groupElement("elem1"));
    VarHandle floatHandle2 = structLayout.varHandle(float.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("addFloatFromPointerAndFloatsFromStruct_returnFloatPointer").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment floatSegmt = MemorySegment.allocateNative(C_FLOAT);
    MemoryAccess.setFloat(floatSegmt, 12.12F);
    MemorySegment structSegmt = MemorySegment.allocateNative(structLayout);
    floatHandle1.set(structSegmt, 18.23F);
    floatHandle2.set(structSegmt, 19.34F);
    MemoryAddress resultAddr = (MemoryAddress) mh.invokeExact(floatSegmt.address(), structSegmt);
    MemorySegment resultSegmt = resultAddr.asSegmentRestricted(C_FLOAT.byteSize());
    VarHandle floatHandle = MemoryHandles.varHandle(float.class, ByteOrder.nativeOrder());
    float result = (float) floatHandle.get(resultSegmt, 0);
    Assert.assertEquals(result, 49.69F, 0.01F);
    Assert.assertEquals(resultSegmt.address().toRawLongValue(), floatSegmt.address().toRawLongValue());
    floatSegmt.close();
    structSegmt.close();
    resultSegmt.close();
}

Example 8 with FunctionDescriptor

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

the class StructTests method test_addBoolAndBoolsFromNestedStructWithXor_reverseOrder.

@Test
public void test_addBoolAndBoolsFromNestedStructWithXor_reverseOrder() throws Throwable {
    GroupLayout nestedStructLayout = MemoryLayout.ofStruct(C_INT.withName("elem1"), C_INT.withName("elem2"));
    GroupLayout structLayout = MemoryLayout.ofStruct(C_INT.withName("elem1"), nestedStructLayout.withName("struct_elem2"));
    MethodType mt = MethodType.methodType(boolean.class, boolean.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_INT, C_INT, structLayout);
    Symbol functionSymbol = nativeLib.lookup("addBoolAndBoolsFromNestedStructWithXor_reverseOrder").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt = MemorySegment.allocateNative(structLayout);
    MemoryAccess.setIntAtOffset(structSegmt, 0, 1);
    MemoryAccess.setIntAtOffset(structSegmt, 4, 0);
    MemoryAccess.setIntAtOffset(structSegmt, 8, 1);
    boolean result = (boolean) mh.invokeExact(true, structSegmt);
    Assert.assertEquals(result, true);
    structSegmt.close();
}

Example 9 with FunctionDescriptor

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

the class StructTests method test_add3IntStructs_returnStruct.

@Test
public void test_add3IntStructs_returnStruct() throws Throwable {
    GroupLayout structLayout = MemoryLayout.ofStruct(C_INT.withName("elem1"), C_INT.withName("elem2"), C_INT.withName("elem3"));
    VarHandle intHandle1 = structLayout.varHandle(int.class, PathElement.groupElement("elem1"));
    VarHandle intHandle2 = structLayout.varHandle(int.class, PathElement.groupElement("elem2"));
    VarHandle intHandle3 = structLayout.varHandle(int.class, PathElement.groupElement("elem3"));
    MethodType mt = MethodType.methodType(MemorySegment.class, MemorySegment.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(structLayout, structLayout, structLayout);
    Symbol functionSymbol = nativeLib.lookup("add3IntStructs_returnStruct").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt1 = MemorySegment.allocateNative(structLayout);
    intHandle1.set(structSegmt1, 11223344);
    intHandle2.set(structSegmt1, 55667788);
    intHandle3.set(structSegmt1, 99001122);
    MemorySegment structSegmt2 = MemorySegment.allocateNative(structLayout);
    intHandle1.set(structSegmt2, 33445566);
    intHandle2.set(structSegmt2, 77889900);
    intHandle3.set(structSegmt2, 44332211);
    MemorySegment resultSegmt = (MemorySegment) mh.invokeExact(structSegmt1, structSegmt2);
    Assert.assertEquals(intHandle1.get(resultSegmt), 44668910);
    Assert.assertEquals(intHandle2.get(resultSegmt), 133557688);
    Assert.assertEquals(intHandle3.get(resultSegmt), 143333333);
    structSegmt1.close();
    structSegmt2.close();
    resultSegmt.close();
}

Example 10 with FunctionDescriptor

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

the class StructTests method test_addLongAndLongsFromStructWithNestedLongArray_reverseOrder.

@Test
public void test_addLongAndLongsFromStructWithNestedLongArray_reverseOrder() throws Throwable {
    SequenceLayout longArray = MemoryLayout.ofSequence(2, longLayout);
    GroupLayout structLayout = MemoryLayout.ofStruct(longLayout.withName("elem1"), longArray.withName("array_elem2"));
    MethodType mt = MethodType.methodType(long.class, long.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(longLayout, longLayout, structLayout);
    Symbol functionSymbol = nativeLib.lookup("addLongAndLongsFromStructWithNestedLongArray_reverseOrder").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt = MemorySegment.allocateNative(structLayout);
    MemoryAccess.setLongAtOffset(structSegmt, 0, 111111111L);
    MemoryAccess.setLongAtOffset(structSegmt, 8, 222222222L);
    MemoryAccess.setLongAtOffset(structSegmt, 16, 333333333L);
    long result = (long) mh.invokeExact(444444444L, structSegmt);
    Assert.assertEquals(result, 1111111110L);
    structSegmt.close();
}