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

Example 96 with FunctionDescriptor

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

the class StructTests method test_addLongAndLongsFromStructWithNestedStructArray.

@Test
public void test_addLongAndLongsFromStructWithNestedStructArray() throws Throwable {
    GroupLayout longStruct = MemoryLayout.ofStruct(longLayout.withName("elem1"), longLayout.withName("elem2"));
    SequenceLayout structArray = MemoryLayout.ofSequence(2, longStruct);
    GroupLayout structLayout = MemoryLayout.ofStruct(structArray.withName("struct_array_elem1"), longLayout.withName("elem2"));
    MethodType mt = MethodType.methodType(long.class, long.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(longLayout, longLayout, structLayout);
    Symbol functionSymbol = nativeLib.lookup("addLongAndLongsFromStructWithNestedStructArray").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);
    MemoryAccess.setLongAtOffset(structSegmt, 24, 444444444L);
    MemoryAccess.setLongAtOffset(structSegmt, 32, 555555555L);
    long result = (long) mh.invokeExact(666666666L, structSegmt);
    Assert.assertEquals(result, 2333333331L);
    structSegmt.close();
}

Example 97 with FunctionDescriptor

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

the class StructTests method test_addDoubleAndDoublesFromStructWithNestedStructArray_withoutLayoutName.

@Test
public void test_addDoubleAndDoublesFromStructWithNestedStructArray_withoutLayoutName() throws Throwable {
    GroupLayout doubleStruct = MemoryLayout.ofStruct(C_DOUBLE, C_DOUBLE);
    SequenceLayout structArray = MemoryLayout.ofSequence(2, doubleStruct);
    GroupLayout structLayout = MemoryLayout.ofStruct(structArray, C_DOUBLE);
    MethodType mt = MethodType.methodType(double.class, double.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_DOUBLE, C_DOUBLE, structLayout);
    Symbol functionSymbol = nativeLib.lookup("addDoubleAndDoublesFromStructWithNestedStructArray").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt = MemorySegment.allocateNative(structLayout);
    MemoryAccess.setDoubleAtOffset(structSegmt, 0, 111.111D);
    MemoryAccess.setDoubleAtOffset(structSegmt, 8, 222.222D);
    MemoryAccess.setDoubleAtOffset(structSegmt, 16, 333.333D);
    MemoryAccess.setDoubleAtOffset(structSegmt, 24, 444.444D);
    MemoryAccess.setDoubleAtOffset(structSegmt, 32, 555.555D);
    double result = (double) mh.invokeExact(666.666D, structSegmt);
    Assert.assertEquals(result, 2333.331D, 0.001D);
    structSegmt.close();
}

Example 98 with FunctionDescriptor

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

the class StructTests method test_addFloatAndFloatsFromStructWithNestedFloatArray.

@Test
public void test_addFloatAndFloatsFromStructWithNestedFloatArray() throws Throwable {
    SequenceLayout floatArray = MemoryLayout.ofSequence(2, C_FLOAT);
    GroupLayout structLayout = MemoryLayout.ofStruct(floatArray.withName("array_elem1"), C_FLOAT.withName("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").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 99 with FunctionDescriptor

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

the class StructTests method test_addDoubleAndIntDoubleFromStruct.

@Test
public void test_addDoubleAndIntDoubleFromStruct() throws Throwable {
    GroupLayout structLayout = null;
    MemorySegment structSegmt = null;
    /* The size of [int, double] on AIX/PPC 64-bit is 12 bytes without padding by default
		 * while the same struct is 16 bytes with padding on other platforms.
		 */
    if (isAixOS) {
        structLayout = MemoryLayout.ofStruct(C_INT.withName("elem1"), C_DOUBLE.withName("elem2"));
        structSegmt = MemorySegment.allocateNative(structLayout);
        MemoryAccess.setIntAtOffset(structSegmt, 0, 18);
        MemoryAccess.setDoubleAtOffset(structSegmt, 4, 619.777D);
    } else {
        structLayout = MemoryLayout.ofStruct(C_INT.withName("elem1"), MemoryLayout.ofPaddingBits(C_INT.bitSize()), C_DOUBLE.withName("elem2"));
        VarHandle elemHandle1 = structLayout.varHandle(int.class, PathElement.groupElement("elem1"));
        VarHandle elemHandle2 = structLayout.varHandle(double.class, PathElement.groupElement("elem2"));
        structSegmt = MemorySegment.allocateNative(structLayout);
        elemHandle1.set(structSegmt, 18);
        elemHandle2.set(structSegmt, 619.777D);
    }
    MethodType mt = MethodType.methodType(double.class, double.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_DOUBLE, C_DOUBLE, structLayout);
    Symbol functionSymbol = nativeLib.lookup("addDoubleAndIntDoubleFromStruct").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    double result = (double) mh.invokeExact(113.567D, structSegmt);
    Assert.assertEquals(result, 751.344D, 0.001D);
    structSegmt.close();
}

Example 100 with FunctionDescriptor

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

the class StructTests method test_addFloatAndFloatsFromStructWithNestedStructArray_reverseOrder.

@Test
public void test_addFloatAndFloatsFromStructWithNestedStructArray_reverseOrder() throws Throwable {
    GroupLayout floatStruct = MemoryLayout.ofStruct(C_FLOAT.withName("elem1"), C_FLOAT.withName("elem2"));
    SequenceLayout structArray = MemoryLayout.ofSequence(2, floatStruct);
    GroupLayout structLayout = MemoryLayout.ofStruct(C_FLOAT.withName("elem1"), structArray.withName("struct_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("addFloatAndFloatsFromStructWithNestedStructArray_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);
    MemoryAccess.setFloatAtOffset(structSegmt, 12, 444.44F);
    MemoryAccess.setFloatAtOffset(structSegmt, 16, 555.55F);
    float result = (float) mh.invokeExact(666.66F, structSegmt);
    Assert.assertEquals(result, 2333.31F, 0.01F);
    structSegmt.close();
}