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

Example 31 with MemoryAddress

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

the class StructTests1 method test_addFloatFromPointerAndFloatsFromStruct_returnFloatPointer_1.

@Test
public void test_addFloatFromPointerAndFloatsFromStruct_returnFloatPointer_1() throws Throwable {
    GroupLayout structLayout = MemoryLayout.structLayout(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);
    Addressable functionSymbol = nativeLibLookup.lookup("addFloatFromPointerAndFloatsFromStruct_returnFloatPointer").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    try (ResourceScope scope = ResourceScope.newConfinedScope()) {
        SegmentAllocator allocator = SegmentAllocator.ofScope(scope);
        MemorySegment floatSegmt = allocator.allocate(C_FLOAT);
        MemoryAccess.setFloat(floatSegmt, 12.12F);
        MemorySegment structSegmt = allocator.allocate(structLayout);
        floatHandle1.set(structSegmt, 18.23F);
        floatHandle2.set(structSegmt, 19.34F);
        MemoryAddress resultAddr = (MemoryAddress) mh.invokeExact(floatSegmt.address(), structSegmt);
        MemorySegment resultSegmt = resultAddr.asSegment(C_FLOAT.byteSize(), scope);
        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());
    }
}

Example 32 with MemoryAddress

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

the class PrimitiveTypeTests1 method test_addTwoFloats_fromMemAddr_1.

@Test
public void test_addTwoFloats_fromMemAddr_1() throws Throwable {
    MethodType mt = MethodType.methodType(float.class, float.class, float.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_FLOAT, C_FLOAT, C_FLOAT);
    Addressable functionSymbol = nativeLibLookup.lookup("add2Floats").get();
    MemoryAddress memAddr = functionSymbol.address();
    MethodHandle mh = clinker.downcallHandle(memAddr, mt, fd);
    float result = (float) mh.invokeExact(5.74f, 6.79f);
    Assert.assertEquals(result, 12.53f, 0.01f);
}

Example 33 with MemoryAddress

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

the class PrimitiveTypeTests1 method test_addTwoLongs_fromMemAddr_1.

@Test
public void test_addTwoLongs_fromMemAddr_1() 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, mt, fd);
    long result = (long) mh.invokeExact(57424L, 698235L);
    Assert.assertEquals(result, 755659L);
}

Example 34 with MemoryAddress

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

the class PrimitiveTypeTests1 method test_generateNewChar_fromMemAddr_1.

@Test
public void test_generateNewChar_fromMemAddr_1() throws Throwable {
    MethodType mt = MethodType.methodType(char.class, char.class, char.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_SHORT, C_SHORT, C_SHORT);
    Addressable functionSymbol = nativeLibLookup.lookup("createNewCharFrom2Chars").get();
    MemoryAddress memAddr = functionSymbol.address();
    MethodHandle mh = clinker.downcallHandle(memAddr, mt, fd);
    char result = (char) mh.invokeExact('B', 'D');
    Assert.assertEquals(result, 'C');
}

Example 35 with MemoryAddress

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

the class StructTests1 method test_add2BoolStructsWithXor_returnStructPointer_1.

@Test
public void test_add2BoolStructsWithXor_returnStructPointer_1() throws Throwable {
    GroupLayout structLayout = MemoryLayout.structLayout(C_CHAR.withName("elem1"), C_CHAR.withName("elem2"));
    VarHandle boolHandle1 = structLayout.varHandle(byte.class, PathElement.groupElement("elem1"));
    VarHandle boolHandle2 = structLayout.varHandle(byte.class, PathElement.groupElement("elem2"));
    MethodType mt = MethodType.methodType(MemoryAddress.class, MemoryAddress.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_POINTER, C_POINTER, structLayout);
    Addressable functionSymbol = nativeLibLookup.lookup("add2BoolStructsWithXor_returnStructPointer").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    try (ResourceScope scope = ResourceScope.newConfinedScope()) {
        SegmentAllocator allocator = SegmentAllocator.ofScope(scope);
        MemorySegment structSegmt1 = allocator.allocate(structLayout);
        boolHandle1.set(structSegmt1, (byte) 1);
        boolHandle2.set(structSegmt1, (byte) 0);
        MemorySegment structSegmt2 = allocator.allocate(structLayout);
        boolHandle1.set(structSegmt2, (byte) 1);
        boolHandle2.set(structSegmt2, (byte) 1);
        MemoryAddress resultAddr = (MemoryAddress) mh.invokeExact(structSegmt1.address(), structSegmt2);
        MemorySegment resultSegmt = resultAddr.asSegment(structLayout.byteSize(), scope);
        Assert.assertEquals((byte) boolHandle1.get(resultSegmt), (byte) 0);
        Assert.assertEquals((byte) boolHandle2.get(resultSegmt), (byte) 1);
    }
}