Examples with VarHandle java.lang.invoke.VarHandle used on opensource projects

Example 56 with VarHandle

use of java.lang.invoke.VarHandle in project openj9 by eclipse.

the class StructTests1 method test_addDoubleAndFloatDoubleFromStruct_1.

@Test
public void test_addDoubleAndFloatDoubleFromStruct_1() throws Throwable {
    GroupLayout structLayout = null;
    MemorySegment structSegmt = null;
    try (ResourceScope scope = ResourceScope.newConfinedScope()) {
        SegmentAllocator allocator = SegmentAllocator.ofScope(scope);
        /* The size of [float, 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.structLayout(C_FLOAT.withName("elem1"), C_DOUBLE.withName("elem2"));
            structSegmt = allocator.allocate(structLayout);
            MemoryAccess.setFloatAtOffset(structSegmt, 0, 18.444F);
            MemoryAccess.setDoubleAtOffset(structSegmt, 4, 619.777D);
        } else {
            structLayout = MemoryLayout.structLayout(C_FLOAT.withName("elem1"), MemoryLayout.paddingLayout(C_FLOAT.bitSize()), C_DOUBLE.withName("elem2"));
            VarHandle elemHandle1 = structLayout.varHandle(float.class, PathElement.groupElement("elem1"));
            VarHandle elemHandle2 = structLayout.varHandle(double.class, PathElement.groupElement("elem2"));
            structSegmt = allocator.allocate(structLayout);
            elemHandle1.set(structSegmt, 18.444F);
            elemHandle2.set(structSegmt, 619.777D);
        }
        MethodType mt = MethodType.methodType(double.class, double.class, MemorySegment.class);
        FunctionDescriptor fd = FunctionDescriptor.of(C_DOUBLE, C_DOUBLE, structLayout);
        Addressable functionSymbol = nativeLibLookup.lookup("addDoubleAndFloatDoubleFromStruct").get();
        MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
        double result = (double) mh.invokeExact(113.567D, structSegmt);
        Assert.assertEquals(result, 751.788D, 0.001D);
    }
}

Example 57 with VarHandle

use of java.lang.invoke.VarHandle in project openj9 by eclipse.

the class StructTests1 method test_add2FloatStructs_returnStruct_1.

@Test
public void test_add2FloatStructs_returnStruct_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(MemorySegment.class, MemorySegment.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(structLayout, structLayout, structLayout);
    Addressable functionSymbol = nativeLibLookup.lookup("add2FloatStructs_returnStruct").get();
    try (ResourceScope scope = ResourceScope.newConfinedScope()) {
        SegmentAllocator allocator = SegmentAllocator.ofScope(scope);
        MethodHandle mh = clinker.downcallHandle(functionSymbol, allocator, mt, fd);
        MemorySegment structSegmt1 = allocator.allocate(structLayout);
        floatHandle1.set(structSegmt1, 25.12F);
        floatHandle2.set(structSegmt1, 11.23F);
        MemorySegment structSegmt2 = allocator.allocate(structLayout);
        floatHandle1.set(structSegmt2, 24.34F);
        floatHandle2.set(structSegmt2, 13.45F);
        MemorySegment resultSegmt = (MemorySegment) mh.invokeExact(structSegmt1, structSegmt2);
        Assert.assertEquals((float) floatHandle1.get(resultSegmt), 49.46F, 0.01F);
        Assert.assertEquals((float) floatHandle2.get(resultSegmt), 24.68F, 0.01F);
    }
}

Example 58 with VarHandle

use of java.lang.invoke.VarHandle in project openj9 by eclipse.

the class StructTests1 method test_addIntAndIntLongFromStruct_1.

@Test
public void test_addIntAndIntLongFromStruct_1() throws Throwable {
    GroupLayout structLayout = MemoryLayout.structLayout(C_INT.withName("elem1"), MemoryLayout.paddingLayout(C_INT.bitSize()), longLayout.withName("elem2"));
    VarHandle elemHandle1 = structLayout.varHandle(int.class, PathElement.groupElement("elem1"));
    VarHandle elemHandle2 = structLayout.varHandle(long.class, PathElement.groupElement("elem2"));
    MethodType mt = MethodType.methodType(long.class, int.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(longLayout, C_INT, structLayout);
    Addressable functionSymbol = nativeLibLookup.lookup("addIntAndIntLongFromStruct").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    try (ResourceScope scope = ResourceScope.newConfinedScope()) {
        SegmentAllocator allocator = SegmentAllocator.ofScope(scope);
        MemorySegment structSegmt = allocator.allocate(structLayout);
        elemHandle1.set(structSegmt, 11223344);
        elemHandle2.set(structSegmt, 667788990011L);
        long result = (long) mh.invokeExact(22446688, structSegmt);
        Assert.assertEquals(result, 667822660043L);
    }
}

Example 59 with VarHandle

use of java.lang.invoke.VarHandle in project openj9 by eclipse.

the class StructTests1 method test_addIntAndIntsFromStructPointer_1.

@Test
public void test_addIntAndIntsFromStructPointer_1() throws Throwable {
    GroupLayout structLayout = MemoryLayout.structLayout(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(int.class, int.class, MemoryAddress.class);
    FunctionDescriptor fd = FunctionDescriptor.of(C_INT, C_INT, C_POINTER);
    Addressable functionSymbol = nativeLibLookup.lookup("addIntAndIntsFromStructPointer").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    try (ResourceScope scope = ResourceScope.newConfinedScope()) {
        SegmentAllocator allocator = SegmentAllocator.ofScope(scope);
        MemorySegment structSegmt = allocator.allocate(structLayout);
        intHandle1.set(structSegmt, 11121314);
        intHandle2.set(structSegmt, 15161718);
        int result = (int) mh.invokeExact(19202122, structSegmt.address());
        Assert.assertEquals(result, 45485154);
    }
}

Example 60 with VarHandle

use of java.lang.invoke.VarHandle in project openj9 by eclipse.

the class StructTests1 method test_add2FloatStructs_returnStructPointer_1.

@Test
public void test_add2FloatStructs_returnStructPointer_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("add2FloatStructs_returnStructPointer").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    try (ResourceScope scope = ResourceScope.newConfinedScope()) {
        SegmentAllocator allocator = SegmentAllocator.ofScope(scope);
        MemorySegment structSegmt1 = allocator.allocate(structLayout);
        floatHandle1.set(structSegmt1, 25.12F);
        floatHandle2.set(structSegmt1, 11.23F);
        MemorySegment structSegmt2 = allocator.allocate(structLayout);
        floatHandle1.set(structSegmt2, 24.34F);
        floatHandle2.set(structSegmt2, 13.45F);
        MemoryAddress resultAddr = (MemoryAddress) mh.invokeExact(structSegmt1.address(), structSegmt2);
        MemorySegment resultSegmt = resultAddr.asSegment(structLayout.byteSize(), scope);
        Assert.assertEquals((float) floatHandle1.get(resultSegmt), 49.46F, 0.01F);
        Assert.assertEquals((float) floatHandle2.get(resultSegmt), 24.68F, 0.01F);
    }
}