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

Example 51 with MemoryAddress

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

the class PrimitiveTypeTests3 method test_memoryAllocFreeFromDefaultLib_3.

@Test
public void test_memoryAllocFreeFromDefaultLib_3() 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 allocSymbol = defaultLibLookup.lookup("malloc").get();
        MethodType allocMethodType = MethodType.methodType(MemoryAddress.class, long.class);
        FunctionDescriptor allocFuncDesc = FunctionDescriptor.of(C_POINTER, longLayout);
        MethodHandle allocHandle = clinker.downcallHandle(allocMethodType, allocFuncDesc);
        MemoryAddress allocMemAddr = (MemoryAddress) allocHandle.invokeExact(allocSymbol, 10L);
        MemorySegment memSeg = allocMemAddr.asSegment(10L, resourceScope);
        MemoryAccess.setIntAtOffset(memSeg, 0, 15);
        Assert.assertEquals(MemoryAccess.getIntAtOffset(memSeg, 0), 15);
        Addressable freeSymbol = defaultLibLookup.lookup("free").get();
        MethodType freeMethodType = MethodType.methodType(void.class, MemoryAddress.class);
        FunctionDescriptor freeFuncDesc = FunctionDescriptor.ofVoid(C_POINTER);
        MethodHandle freeHandle = clinker.downcallHandle(freeMethodType, freeFuncDesc);
        freeHandle.invokeExact(freeSymbol, allocMemAddr);
    }
}

Example 52 with MemoryAddress

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

the class PrimitiveTypeTests3 method test_memoryAllocFreeFromDefaultLib_fromMemAddr_3.

@Test
public void test_memoryAllocFreeFromDefaultLib_fromMemAddr_3() 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 allocSymbol = defaultLibLookup.lookup("malloc").get();
        MemoryAddress allocMemAddrFromSymbol = allocSymbol.address();
        MethodType allocMethodType = MethodType.methodType(MemoryAddress.class, long.class);
        FunctionDescriptor allocFuncDesc = FunctionDescriptor.of(C_POINTER, longLayout);
        MethodHandle allocHandle = clinker.downcallHandle(allocMethodType, allocFuncDesc);
        MemoryAddress allocMemAddr = (MemoryAddress) allocHandle.invokeExact(allocSymbol, 10L);
        MemorySegment memSeg = allocMemAddr.asSegment(10L, resourceScope);
        MemoryAccess.setIntAtOffset(memSeg, 0, 15);
        Assert.assertEquals(MemoryAccess.getIntAtOffset(memSeg, 0), 15);
        Addressable freeSymbol = defaultLibLookup.lookup("free").get();
        MemoryAddress freeMemAddr = freeSymbol.address();
        MethodType freeMethodType = MethodType.methodType(void.class, MemoryAddress.class);
        FunctionDescriptor freeFuncDesc = FunctionDescriptor.ofVoid(C_POINTER);
        MethodHandle freeHandle = clinker.downcallHandle(freeMethodType, freeFuncDesc);
        freeHandle.invokeExact(freeSymbol, allocMemAddr);
    }
}

Example 53 with MemoryAddress

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

the class VaListTests method test_vprintfFromDefaultLibWithVaList_fromMemAddr.

@Test
public void test_vprintfFromDefaultLibWithVaList_fromMemAddr() throws Throwable {
    /* Disable the test on Windows given a misaligned access exception coming from
		 * java.base/java.lang.invoke.MemoryAccessVarHandleBase triggered by CLinker.toCString()
		 * is also captured on OpenJDK/Hotspot.
		 */
    if (!isWinOS) {
        Addressable functionSymbol = defaultLibLookup.lookup("vprintf").get();
        MemoryAddress memAddr = functionSymbol.address();
        MethodType mt = MethodType.methodType(int.class, MemoryAddress.class, VaList.class);
        FunctionDescriptor fd = FunctionDescriptor.of(C_INT, C_POINTER, C_VA_LIST);
        MethodHandle mh = clinker.downcallHandle(memAddr, mt, fd);
        try (ResourceScope scope = ResourceScope.newConfinedScope()) {
            MemorySegment formatMemSegment = CLinker.toCString("%d * %d = %d\n", scope);
            VaList vaList = CLinker.VaList.make(vaListBuilder -> vaListBuilder.vargFromInt(C_INT, 7).vargFromInt(C_INT, 8).vargFromInt(C_INT, 56), scope);
            mh.invoke(formatMemSegment.address(), vaList);
        }
    }
}

Example 54 with MemoryAddress

use of jdk.incubator.foreign.MemoryAddress 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(JAVA_FLOAT.withName("elem1"), JAVA_FLOAT.withName("elem2"));
    VarHandle floatHandle1 = structLayout.varHandle(PathElement.groupElement("elem1"));
    VarHandle floatHandle2 = structLayout.varHandle(PathElement.groupElement("elem2"));
    FunctionDescriptor fd = FunctionDescriptor.of(ADDRESS, ADDRESS, structLayout);
    NativeSymbol functionSymbol = nativeLibLookup.lookup("add2FloatStructs_returnStructPointer").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, fd);
    try (ResourceScope scope = ResourceScope.newConfinedScope()) {
        SegmentAllocator allocator = SegmentAllocator.nativeAllocator(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.invoke(structSegmt1, structSegmt2);
        Assert.assertEquals(resultAddr.get(JAVA_FLOAT, 0), 49.46F, 0.01F);
        Assert.assertEquals(resultAddr.get(JAVA_FLOAT, 4), 24.68F, 0.01F);
    }
}

Example 55 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(JAVA_BOOLEAN.withName("elem1"), JAVA_BOOLEAN.withName("elem2"));
    VarHandle boolHandle1 = structLayout.varHandle(PathElement.groupElement("elem1"));
    VarHandle boolHandle2 = structLayout.varHandle(PathElement.groupElement("elem2"));
    FunctionDescriptor fd = FunctionDescriptor.of(ADDRESS, ADDRESS, structLayout);
    NativeSymbol functionSymbol = nativeLibLookup.lookup("add2BoolStructsWithXor_returnStructPointer").get();
    MethodHandle mh = clinker.downcallHandle(functionSymbol, fd);
    try (ResourceScope scope = ResourceScope.newConfinedScope()) {
        SegmentAllocator allocator = SegmentAllocator.nativeAllocator(scope);
        MemorySegment structSegmt1 = allocator.allocate(structLayout);
        boolHandle1.set(structSegmt1, true);
        boolHandle2.set(structSegmt1, false);
        MemorySegment structSegmt2 = allocator.allocate(structLayout);
        boolHandle1.set(structSegmt2, true);
        boolHandle2.set(structSegmt2, true);
        MemoryAddress resultAddr = (MemoryAddress) mh.invoke(structSegmt1, structSegmt2);
        Assert.assertEquals(resultAddr.get(JAVA_BOOLEAN, 0), false);
        Assert.assertEquals(resultAddr.get(JAVA_BOOLEAN, 1), true);
    }
}