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

Example 26 with MemoryAddress

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

the class PrimitiveTypeTests method test_memoryAllocFreeFromDefaultLib_fromMemAddr.

@Test
public void test_memoryAllocFreeFromDefaultLib_fromMemAddr() throws Throwable {
    Symbol allocSymbol = defaultLib.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(allocMemAddrFromSymbol, allocMethodType, allocFuncDesc);
    MemoryAddress allocMemAddr = (MemoryAddress) allocHandle.invokeExact(10L);
    long allocMemAddrValue = allocMemAddr.toRawLongValue();
    MemorySegment memSeg = MemorySegment.ofNativeRestricted();
    MemoryAccess.setIntAtOffset(memSeg, allocMemAddrValue, 15);
    Assert.assertEquals(MemoryAccess.getIntAtOffset(memSeg, allocMemAddrValue), 15);
    Symbol freeSymbol = defaultLib.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(freeMemAddr, freeMethodType, freeFuncDesc);
    freeHandle.invokeExact(allocMemAddr);
}

Example 27 with MemoryAddress

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

the class PrimitiveTypeTests method test_strlenFromDefaultLibWithMemAddr_fromMemAddr.

@Test
public void test_strlenFromDefaultLibWithMemAddr_fromMemAddr() throws Throwable {
    Symbol strlenSymbol = defaultLib.lookup("strlen").get();
    MemoryAddress memAddr = strlenSymbol.address();
    MethodType mt = MethodType.methodType(long.class, MemoryAddress.class);
    FunctionDescriptor fd = FunctionDescriptor.of(longLayout, C_POINTER);
    MethodHandle mh = clinker.downcallHandle(memAddr, mt, fd);
    MemorySegment funcMemSegment = CLinker.toCString("JEP389 DOWNCALL TEST SUITES");
    long strLength = (long) mh.invokeExact(funcMemSegment.address());
    Assert.assertEquals(strLength, 27);
    FunctionDescriptor fd2 = FunctionDescriptor.of(longLayout.withName("long"), C_POINTER.withName("pointer"));
    mh = clinker.downcallHandle(memAddr, mt, fd2);
    strLength = (long) mh.invokeExact(funcMemSegment.address());
    Assert.assertEquals(strLength, 27);
}

Example 28 with MemoryAddress

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

the class PrimitiveTypeTests method test_memoryAllocFreeFromDefaultLib.

@Test
public void test_memoryAllocFreeFromDefaultLib() throws Throwable {
    Symbol allocSymbol = defaultLib.lookup("malloc").get();
    MethodType allocMethodType = MethodType.methodType(MemoryAddress.class, long.class);
    FunctionDescriptor allocFuncDesc = FunctionDescriptor.of(C_POINTER, longLayout);
    MethodHandle allocHandle = clinker.downcallHandle(allocSymbol, allocMethodType, allocFuncDesc);
    MemoryAddress allocMemAddr = (MemoryAddress) allocHandle.invokeExact(10L);
    long allocMemAddrValue = allocMemAddr.toRawLongValue();
    MemorySegment memSeg = MemorySegment.ofNativeRestricted();
    MemoryAccess.setIntAtOffset(memSeg, allocMemAddrValue, 15);
    Assert.assertEquals(MemoryAccess.getIntAtOffset(memSeg, allocMemAddrValue), 15);
    Symbol freeSymbol = defaultLib.lookup("free").get();
    MethodType freeMethodType = MethodType.methodType(void.class, MemoryAddress.class);
    FunctionDescriptor freeFuncDesc = FunctionDescriptor.ofVoid(C_POINTER);
    MethodHandle freeHandle = clinker.downcallHandle(freeSymbol, freeMethodType, freeFuncDesc);
    freeHandle.invokeExact(allocMemAddr);
}

Example 29 with MemoryAddress

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

the class PrimitiveTypeTests method test_addTwoIntsReturnVoid_fromMemAddr.

@Test
public void test_addTwoIntsReturnVoid_fromMemAddr() throws Throwable {
    MethodType mt = MethodType.methodType(void.class, int.class, int.class);
    FunctionDescriptor fd = FunctionDescriptor.ofVoid(C_INT, C_INT);
    Symbol functionSymbol = nativeLib.lookup("add2IntsReturnVoid").get();
    MemoryAddress memAddr = functionSymbol.address();
    MethodHandle mh = clinker.downcallHandle(memAddr, mt, fd);
    mh.invokeExact(454, 398);
}

Example 30 with MemoryAddress

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

the class PrimitiveTypeTests method test_memoryAllocFreeFromCLinkerMethod.

@Test
public void test_memoryAllocFreeFromCLinkerMethod() throws Throwable {
    MemoryAddress allocMemAddr = CLinker.allocateMemoryRestricted(10L);
    long allocMemAddrValue = allocMemAddr.toRawLongValue();
    MemorySegment memSeg = MemorySegment.ofNativeRestricted();
    MemoryAccess.setIntAtOffset(memSeg, allocMemAddrValue, 49);
    Assert.assertEquals(MemoryAccess.getIntAtOffset(memSeg, allocMemAddrValue), 49);
    CLinker.freeMemoryRestricted(allocMemAddr);
}