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

Example 56 with FunctionDescriptor

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

the class PrimitiveTypeTests2 method test_printfFromDefaultLibWithMemAddr_2.

@Test
public void test_printfFromDefaultLibWithMemAddr_2() throws Throwable {
    /* Temporarily disable the default library loading on AIX till we figure out a way
		 * around to handle the case as the official implementation in OpenJDK17 doesn't
		 * help to load the static libray (libc.a).
		 */
    if (!isAixOS) {
        Addressable functionSymbol = defaultLibLookup.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, allocator, mt, fd);
        MemorySegment formatMemSegment = CLinker.toCString("\n%d + %d = %d\n", resourceScope);
        mh.invoke(formatMemSegment.address(), 15, 27, 42);
    }
}

Example 57 with FunctionDescriptor

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

the class PrimitiveTypeTests2 method test_addTwoInts_2.

@Test
public void test_addTwoInts_2() throws Throwable {
    MethodType mt = MethodType.methodType(int.class, int.class, int.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_INT, C_INT, C_INT);
    Addressable functionSymbol = nativeLibLookup.lookup("add2Ints").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, allocator, mt, fd);
    int result = (int) mh.invokeExact(112, 123);
    Assert.assertEquals(result, 235);
}

Example 58 with FunctionDescriptor

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

the class PrimitiveTypeTests2 method test_addTwoBoolsWithOr_fromMemAddr_2.

@Test
public void test_addTwoBoolsWithOr_fromMemAddr_2() throws Throwable {
    MethodType mt = MethodType.methodType(boolean.class, boolean.class, boolean.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_CHAR, C_CHAR, C_CHAR);
    Addressable functionSymbol = nativeLibLookup.lookup("add2BoolsWithOr").get();
    MemoryAddress memAddr = functionSymbol.address();
    MethodHandle mh = clinker.downcallHandle(memAddr, allocator, mt, fd);
    boolean result = (boolean) mh.invokeExact(true, false);
    Assert.assertEquals(result, true);
}

Example 59 with FunctionDescriptor

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

the class PrimitiveTypeTests2 method test_addTwoLongs_fromMemAddr_2.

@Test
public void test_addTwoLongs_fromMemAddr_2() throws Throwable {
    MethodType mt = MethodType.methodType(long.class, long.class, long.class);
    FunctionDescriptor fd = FunctionDescriptor.of(longLayout, longLayout, longLayout);
    Addressable functionSymbol = nativeLibLookup.lookup("add2Longs").get();
    MemoryAddress memAddr = functionSymbol.address();
    MethodHandle mh = clinker.downcallHandle(memAddr, allocator, mt, fd);
    long result = (long) mh.invokeExact(57424L, 698235L);
    Assert.assertEquals(result, 755659L);
}

Example 60 with FunctionDescriptor

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

the class StructTests method test_addIntFromPointerAndIntsFromStruct_returnIntPointer.

@Test
public void test_addIntFromPointerAndIntsFromStruct_returnIntPointer() 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(MemoryAddress.class, MemoryAddress.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_POINTER, C_POINTER, structLayout);
    Symbol functionSymbol = nativeLib.lookup("addIntFromPointerAndIntsFromStruct_returnIntPointer").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment intSegmt = MemorySegment.allocateNative(C_INT);
    MemoryAccess.setInt(intSegmt, 1122333);
    MemorySegment structSegmt = MemorySegment.allocateNative(structLayout);
    intHandle1.set(structSegmt, 4455666);
    intHandle2.set(structSegmt, 7788999);
    MemoryAddress resultAddr = (MemoryAddress) mh.invokeExact(intSegmt.address(), structSegmt);
    MemorySegment resultSegmt = resultAddr.asSegmentRestricted(C_INT.byteSize());
    VarHandle intHandle = MemoryHandles.varHandle(int.class, ByteOrder.nativeOrder());
    int result = (int) intHandle.get(resultSegmt, 0);
    Assert.assertEquals(result, 13366998);
    Assert.assertEquals(resultSegmt.address().toRawLongValue(), intSegmt.address().toRawLongValue());
    intSegmt.close();
    structSegmt.close();
    resultSegmt.close();
}