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

Example 41 with VarHandle

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

the class StructTests method test_add2CharStructs_returnStruct.

@Test
public void test_add2CharStructs_returnStruct() throws Throwable {
    GroupLayout structLayout = MemoryLayout.ofStruct(C_SHORT.withName("elem1"), C_SHORT.withName("elem2"));
    VarHandle charHandle1 = structLayout.varHandle(char.class, PathElement.groupElement("elem1"));
    VarHandle charHandle2 = structLayout.varHandle(char.class, PathElement.groupElement("elem2"));
    MethodType mt = MethodType.methodType(MemorySegment.class, MemorySegment.class, MemorySegment.class);
    FunctionDescriptor fd = FunctionDescriptor.of(structLayout, structLayout, structLayout);
    Symbol functionSymbol = nativeLib.lookup("add2CharStructs_returnStruct").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt1 = MemorySegment.allocateNative(structLayout);
    charHandle1.set(structSegmt1, 'A');
    charHandle2.set(structSegmt1, 'B');
    MemorySegment structSegmt2 = MemorySegment.allocateNative(structLayout);
    charHandle1.set(structSegmt2, 'C');
    charHandle2.set(structSegmt2, 'D');
    MemorySegment resultSegmt = (MemorySegment) mh.invokeExact(structSegmt1, structSegmt2);
    Assert.assertEquals(charHandle1.get(resultSegmt), 'C');
    Assert.assertEquals(charHandle2.get(resultSegmt), 'E');
    structSegmt1.close();
    structSegmt2.close();
    resultSegmt.close();
}

Example 42 with VarHandle

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

the class StructTests method test_add3ShortStructs_returnStruct.

@Test
public void test_add3ShortStructs_returnStruct() throws Throwable {
    GroupLayout structLayout = MemoryLayout.ofStruct(C_SHORT.withName("elem1"), C_SHORT.withName("elem2"), C_SHORT.withName("elem3"), MemoryLayout.ofPaddingBits(C_SHORT.bitSize()));
    VarHandle shortHandle1 = structLayout.varHandle(short.class, PathElement.groupElement("elem1"));
    VarHandle shortHandle2 = structLayout.varHandle(short.class, PathElement.groupElement("elem2"));
    VarHandle shortHandle3 = structLayout.varHandle(short.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("add3ShortStructs_returnStruct").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt1 = MemorySegment.allocateNative(structLayout);
    shortHandle1.set(structSegmt1, (short) 25);
    shortHandle2.set(structSegmt1, (short) 26);
    shortHandle3.set(structSegmt1, (short) 27);
    MemorySegment structSegmt2 = MemorySegment.allocateNative(structLayout);
    shortHandle1.set(structSegmt2, (short) 34);
    shortHandle2.set(structSegmt2, (short) 35);
    shortHandle3.set(structSegmt2, (short) 36);
    MemorySegment resultSegmt = (MemorySegment) mh.invokeExact(structSegmt1, structSegmt2);
    Assert.assertEquals((short) shortHandle1.get(resultSegmt), (short) 59);
    Assert.assertEquals((short) shortHandle2.get(resultSegmt), (short) 61);
    Assert.assertEquals((short) shortHandle3.get(resultSegmt), (short) 63);
    structSegmt1.close();
    structSegmt2.close();
    resultSegmt.close();
}

Example 43 with VarHandle

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

the class StructTests method test_add2FloatStructs_returnStructPointer.

@Test
public void test_add2FloatStructs_returnStructPointer() throws Throwable {
    GroupLayout structLayout = MemoryLayout.ofStruct(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);
    Symbol functionSymbol = nativeLib.lookup("add2FloatStructs_returnStructPointer").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt1 = MemorySegment.allocateNative(structLayout);
    floatHandle1.set(structSegmt1, 25.12F);
    floatHandle2.set(structSegmt1, 11.23F);
    MemorySegment structSegmt2 = MemorySegment.allocateNative(structLayout);
    floatHandle1.set(structSegmt2, 24.34F);
    floatHandle2.set(structSegmt2, 13.45F);
    MemoryAddress resultAddr = (MemoryAddress) mh.invokeExact(structSegmt1.address(), structSegmt2);
    MemorySegment resultSegmt = resultAddr.asSegmentRestricted(structLayout.byteSize());
    Assert.assertEquals((float) floatHandle1.get(resultSegmt), 49.46F, 0.01F);
    Assert.assertEquals((float) floatHandle2.get(resultSegmt), 24.68F, 0.01F);
    structSegmt1.close();
    structSegmt2.close();
    resultSegmt.close();
}

Example 44 with VarHandle

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

the class StructTests method test_add3ByteStructs_returnStruct.

@Test
public void test_add3ByteStructs_returnStruct() throws Throwable {
    GroupLayout structLayout = MemoryLayout.ofStruct(C_CHAR.withName("elem1"), C_CHAR.withName("elem2"), C_CHAR.withName("elem3"), MemoryLayout.ofPaddingBits(C_CHAR.bitSize()));
    VarHandle byteHandle1 = structLayout.varHandle(byte.class, PathElement.groupElement("elem1"));
    VarHandle byteHandle2 = structLayout.varHandle(byte.class, PathElement.groupElement("elem2"));
    VarHandle byteHandle3 = structLayout.varHandle(byte.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("add3ByteStructs_returnStruct").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt1 = MemorySegment.allocateNative(structLayout);
    byteHandle1.set(structSegmt1, (byte) 25);
    byteHandle2.set(structSegmt1, (byte) 11);
    byteHandle3.set(structSegmt1, (byte) 12);
    MemorySegment structSegmt2 = MemorySegment.allocateNative(structLayout);
    byteHandle1.set(structSegmt2, (byte) 24);
    byteHandle2.set(structSegmt2, (byte) 13);
    byteHandle3.set(structSegmt2, (byte) 16);
    MemorySegment resultSegmt = (MemorySegment) mh.invokeExact(structSegmt1, structSegmt2);
    Assert.assertEquals((byte) byteHandle1.get(resultSegmt), (byte) 49);
    Assert.assertEquals((byte) byteHandle2.get(resultSegmt), (byte) 24);
    Assert.assertEquals((byte) byteHandle3.get(resultSegmt), (byte) 28);
    structSegmt1.close();
    structSegmt2.close();
    resultSegmt.close();
}

Example 45 with VarHandle

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

the class StructTests method test_add3CharStructs_returnStruct.

@Test
public void test_add3CharStructs_returnStruct() throws Throwable {
    GroupLayout structLayout = MemoryLayout.ofStruct(C_SHORT.withName("elem1"), C_SHORT.withName("elem2"), C_SHORT.withName("elem3"));
    VarHandle charHandle1 = structLayout.varHandle(char.class, PathElement.groupElement("elem1"));
    VarHandle charHandle2 = structLayout.varHandle(char.class, PathElement.groupElement("elem2"));
    VarHandle charHandle3 = structLayout.varHandle(char.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("add3CharStructs_returnStruct").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, mt, fd);
    MemorySegment structSegmt1 = MemorySegment.allocateNative(structLayout);
    charHandle1.set(structSegmt1, 'A');
    charHandle2.set(structSegmt1, 'B');
    charHandle3.set(structSegmt1, 'C');
    MemorySegment structSegmt2 = MemorySegment.allocateNative(structLayout);
    charHandle1.set(structSegmt2, 'B');
    charHandle2.set(structSegmt2, 'C');
    charHandle3.set(structSegmt2, 'D');
    MemorySegment resultSegmt = (MemorySegment) mh.invokeExact(structSegmt1, structSegmt2);
    Assert.assertEquals(charHandle1.get(resultSegmt), 'B');
    Assert.assertEquals(charHandle2.get(resultSegmt), 'D');
    Assert.assertEquals(charHandle3.get(resultSegmt), 'F');
    structSegmt1.close();
    structSegmt2.close();
    resultSegmt.close();
}