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

Example 76 with FunctionDescriptor

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

the class StructTests method test_add3BoolStructsWithXor_returnStruct.

@Test
public void test_add3BoolStructsWithXor_returnStruct() throws Throwable {
    GroupLayout structLayout = MemoryLayout.ofStruct(C_INT.withName("elem1"), C_INT.withName("elem2"), C_INT.withName("elem3"));
    VarHandle boolHandle1 = structLayout.varHandle(int.class, PathElement.groupElement("elem1"));
    VarHandle boolHandle2 = structLayout.varHandle(int.class, PathElement.groupElement("elem2"));
    VarHandle boolHandle3 = 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("add3BoolStructsWithXor_returnStruct").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt1 = MemorySegment.allocateNative(structLayout);
    boolHandle1.set(structSegmt1, 1);
    boolHandle2.set(structSegmt1, 0);
    boolHandle3.set(structSegmt1, 1);
    MemorySegment structSegmt2 = MemorySegment.allocateNative(structLayout);
    boolHandle1.set(structSegmt2, 1);
    boolHandle2.set(structSegmt2, 1);
    boolHandle3.set(structSegmt2, 0);
    MemorySegment resultSegmt = (MemorySegment) mh.invokeExact(structSegmt1, structSegmt2);
    Assert.assertEquals(boolHandle1.get(resultSegmt), 0);
    Assert.assertEquals(boolHandle2.get(resultSegmt), 1);
    Assert.assertEquals(boolHandle3.get(resultSegmt), 1);
    structSegmt1.close();
    structSegmt2.close();
    resultSegmt.close();
}

Example 77 with FunctionDescriptor

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

the class StructTests method test_addIntAndIntShortFromStruct.

@Test
public void test_addIntAndIntShortFromStruct() throws Throwable {
    GroupLayout structLayout = MemoryLayout.ofStruct(C_INT.withName("elem1"), C_SHORT.withName("elem2"), MemoryLayout.ofPaddingBits(C_SHORT.bitSize()));
    VarHandle elemHandle1 = structLayout.varHandle(int.class, PathElement.groupElement("elem1"));
    VarHandle elemHandle2 = structLayout.varHandle(short.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("addIntAndIntShortFromStruct").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt = MemorySegment.allocateNative(structLayout);
    elemHandle1.set(structSegmt, 11223344);
    elemHandle2.set(structSegmt, (short) 32766);
    int result = (int) mh.invokeExact(22334455, structSegmt);
    Assert.assertEquals(result, 33590565);
    structSegmt.close();
}

Example 78 with FunctionDescriptor

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

the class PrimitiveTypeTests method test_addDoubleAndDoubleFromPointer.

@Test
public void test_addDoubleAndDoubleFromPointer() throws Throwable {
    MethodType mt = MethodType.methodType(double.class, MemoryAddress.class, double.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_DOUBLE, C_POINTER, C_DOUBLE);
    Symbol functionSymbol = nativeLib.lookup("addDoubleAndDoubleFromPointer").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment doubleSegmt = MemorySegment.allocateNative(C_DOUBLE);
    MemoryAccess.setDouble(doubleSegmt, 159.748d);
    double result = (double) mh.invokeExact(doubleSegmt.address(), 262.795d);
    doubleSegmt.close();
    Assert.assertEquals(result, 422.543d, 0.001d);
    FunctionDescriptor fd2 = FunctionDescriptor.of(C_DOUBLE.withName("double"), C_POINTER.withName("pointer"), C_DOUBLE.withName("double"));
    mh = clinker.downcallHandle(functionSymbol, mt, fd2);
    doubleSegmt = MemorySegment.allocateNative(C_DOUBLE.withName("double"));
    MemoryAccess.setDouble(doubleSegmt, 1159.748d);
    result = (double) mh.invokeExact(doubleSegmt.address(), 1262.795d);
    doubleSegmt.close();
    Assert.assertEquals(result, 2422.543d, 0.001d);
}

Example 79 with FunctionDescriptor

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

the class PrimitiveTypeTests method test_addTwoBytes.

@Test
public void test_addTwoBytes() throws Throwable {
    MethodType mt = MethodType.methodType(byte.class, byte.class, byte.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_CHAR, C_CHAR, C_CHAR);
    Symbol functionSymbol = nativeLib.lookup("add2Bytes").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    byte result = (byte) mh.invokeExact((byte) 6, (byte) 3);
    Assert.assertEquals(result, (byte) 9);
    FunctionDescriptor fd2 = FunctionDescriptor.of(C_CHAR.withName("char"), C_CHAR.withName("char"), C_CHAR.withName("char"));
    mh = clinker.downcallHandle(functionSymbol, mt, fd2);
    result = (byte) mh.invokeExact((byte) 8, (byte) 9);
    Assert.assertEquals(result, (byte) 17);
}

Example 80 with FunctionDescriptor

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

the class PrimitiveTypeTests method test_printfFromDefaultLibWithMemAddr.

@Test
public void test_printfFromDefaultLibWithMemAddr() throws Throwable {
    Symbol functionSymbol = defaultLib.lookup("printf").get();
    MethodType mt = MethodType.methodType(int.class, MemoryAddress.class, int.class, int.class, int.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_INT, C_POINTER, C_INT, C_INT, C_INT);
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment formatMemSegment = CLinker.toCString("\n%d + %d = %d\n");
    mh.invoke(formatMemSegment.address(), 15, 27, 42);
    FunctionDescriptor fd2 = FunctionDescriptor.of(C_INT.withName("int"), C_POINTER.withName("pointer"), C_INT.withName("int"), C_INT.withName("int"), C_INT.withName("int"));
    mh = clinker.downcallHandle(functionSymbol, mt, fd2);
    mh.invoke(formatMemSegment.address(), 115, 127, 242);
}