def testPyList_New_NonZeroLength(self):
allocs = []
mapper = PythonMapper(GetAllocatingTestAllocator(allocs, []))
deallocTypes = CreateTypes(mapper)
del allocs[:]
SIZE = 27
listPtr = mapper.PyList_New(SIZE)
listStruct = Marshal.PtrToStructure(listPtr, PyListObject)
self.assertEquals(listStruct.ob_refcnt, 1, "bad refcount")
self.assertEquals(listStruct.ob_type, mapper.PyList_Type, "bad type")
self.assertEquals(listStruct.ob_size, SIZE, "bad ob_size")
self.assertEquals(listStruct.allocated, SIZE, "bad allocated")
dataPtr = listStruct.ob_item
self.assertNotEquals(dataPtr, IntPtr.Zero, "failed to allocate space for data")
expectedAllocs = [(dataPtr, (SIZE * CPyMarshal.PtrSize)), (listPtr, Marshal.SizeOf(PyListObject))]
self.assertEquals(set(allocs), set(expectedAllocs), "allocated wrong")
for _ in range(SIZE):
self.assertEquals(CPyMarshal.ReadPtr(dataPtr), IntPtr.Zero, "failed to zero memory")
dataPtr = OffsetPtr(dataPtr, CPyMarshal.PtrSize)
mapper.Dispose()
deallocTypes()
def assertPyTuple_New_Works(self, length):
allocs = []
mapper = PythonMapper(GetAllocatingTestAllocator(allocs, []))
typeBlock = Marshal.AllocHGlobal(Marshal.SizeOf(PyTypeObject))
mapper.RegisterData("PyTuple_Type", typeBlock)
tuplePtr = mapper.PyTuple_New(length)
expectedSize = Marshal.SizeOf(PyTupleObject) + (CPyMarshal.PtrSize * (length - 1))
self.assertEquals(allocs, [(tuplePtr, expectedSize)], "bad alloc")
tupleStruct = Marshal.PtrToStructure(tuplePtr, PyTupleObject)
self.assertEquals(tupleStruct.ob_refcnt, 1, "bad refcount")
self.assertEquals(tupleStruct.ob_type, mapper.PyTuple_Type, "bad type")
self.assertEquals(tupleStruct.ob_size, length, "bad size")
self.assertEquals(mapper.PyTuple_Size(tuplePtr), length, "should still work with uninitialised tuple imo")
dataPtr = OffsetPtr(tuplePtr, Marshal.OffsetOf(PyTupleObject, "ob_item"))
itemPtrs = []
for i in range(length):
self.assertEquals(CPyMarshal.ReadPtr(dataPtr), IntPtr.Zero, "item memory not zeroed")
itemPtr = mapper.Store(i + 100)
CPyMarshal.WritePtr(dataPtr, itemPtr)
itemPtrs.append(itemPtr)
dataPtr = OffsetPtr(dataPtr, CPyMarshal.PtrSize)
immutableTuple = mapper.Retrieve(tuplePtr)
self.assertEquals(immutableTuple, tuple(i + 100 for i in range(length)), "broken")
tuplePtr2 = mapper.Store(immutableTuple)
self.assertEquals(tuplePtr2, tuplePtr, "didn't realise already had this object stored")
self.assertEquals(mapper.RefCount(tuplePtr), 2, "didn't incref")
mapper.Dispose()
Marshal.FreeHGlobal(typeBlock)
def testStoreMethod(self, mapper, _):
meth = MethodType('foo', 'bar', 'baz')
methPtr = mapper.Store(meth)
stored = Marshal.PtrToStructure(methPtr, PyMethodObject)
self.assertEquals(stored.ob_refcnt, 1)
self.assertEquals(stored.ob_type, mapper.PyMethod_Type)
self.assertEquals(stored.im_weakreflist, IntPtr.Zero)
attrs = {
'im_func': 'foo',
'im_self': 'bar',
'im_class': 'baz',
}
attrPtrs = []
for (attr, expected) in attrs.items():
attrPtr = getattr(stored, attr)
self.assertEquals(mapper.RefCount(attrPtr), 1)
mapper.IncRef(attrPtr)
attrPtrs.append(attrPtr)
value = mapper.Retrieve(attrPtr)
self.assertEquals(value, expected)
mapper.DecRef(methPtr)
for attrPtr in attrPtrs:
self.assertEquals(mapper.RefCount(attrPtr), 1)
def testWriteDouble(self):
data = Marshal.AllocHGlobal(CPyMarshal.DoubleSize)
CPyMarshal.WriteDouble(data, 2.2e22)
doubleStruct = Marshal.PtrToStructure(data, DoubleStruct)
self.assertEquals(doubleStruct.value, 2.2e22)
Marshal.FreeHGlobal(data)
def testWritePtrField(self):
data = Marshal.AllocHGlobal(Marshal.SizeOf(PyObject))
CPyMarshal.Zero(data, Marshal.SizeOf(PyObject))
CPyMarshal.WritePtrField(data, PyObject, "ob_type", IntPtr(12345))
dataStruct = Marshal.PtrToStructure(data, PyObject)
self.assertEquals(dataStruct.ob_type, IntPtr(12345), "failed to write")
Marshal.FreeHGlobal(data)
def testWriteDoubleField(self):
data = Marshal.AllocHGlobal(Marshal.SizeOf(PyFloatObject))
CPyMarshal.Zero(data, Marshal.SizeOf(PyFloatObject))
CPyMarshal.WriteDoubleField(data, PyFloatObject, "ob_fval", 7.6e-5)
dataStruct = Marshal.PtrToStructure(data, PyFloatObject)
self.assertEquals(dataStruct.ob_fval, 7.6e-5)
Marshal.FreeHGlobal(data)
def testWriteIntField(self):
data = Marshal.AllocHGlobal(Marshal.SizeOf(PyIntObject))
CPyMarshal.Zero(data, Marshal.SizeOf(PyIntObject))
for value in (Int32.MaxValue, Int32.MinValue):
CPyMarshal.WriteIntField(data, PyIntObject, "ob_ival", value)
dataStruct = Marshal.PtrToStructure(data, PyIntObject)
self.assertEquals(dataStruct.ob_ival, value, "failed to write")
Marshal.FreeHGlobal(data)
def testWriteUIntField(self):
data = Marshal.AllocHGlobal(Marshal.SizeOf(PyTypeObject))
CPyMarshal.Zero(data, Marshal.SizeOf(PyTypeObject))
for value in (UInt32.MaxValue, UInt32.MinValue):
CPyMarshal.WriteUIntField(data, PyTypeObject, "tp_version_tag",
value)
dataStruct = Marshal.PtrToStructure(data, PyTypeObject)
self.assertEquals(dataStruct.tp_version_tag, value,
"failed to write")
Marshal.FreeHGlobal(data)
def assertStringObjectHasLength(self, strPtr, length):
stringObject = Marshal.PtrToStructure(strPtr, PyStringObject)
self.assertEquals(stringObject.ob_refcnt, 1, "unexpected refcount")
self.assertEquals(stringObject.ob_size, length, "unexpected ob_size")
self.assertEquals(stringObject.ob_shash, -1,
"unexpected currently-useless-field")
self.assertEquals(stringObject.ob_sstate, 0,
"unexpected currently-useless-field")
strDataPtr = self.dataPtrFromStrPtr(strPtr)
terminatorPtr = OffsetPtr(strDataPtr, length)
self.assertEquals(Marshal.ReadByte(terminatorPtr), 0,
"string not terminated")
def testStoreFunction(self, mapper, _):
# note: can't be bothered to set any fields for now,
# because they're not actually needed at the moment
def f():
pass
fPtr = mapper.Store(f)
stored = Marshal.PtrToStructure(fPtr, PyFunctionObject)
self.assertEquals(stored.ob_refcnt, 1)
self.assertEquals(stored.ob_type, mapper.PyFunction_Type)
for attr in attrs:
self.assertEquals(getattr(stored, attr), IntPtr.Zero)
def testPyList_New_ZeroLength(self):
allocs = []
mapper = PythonMapper(GetAllocatingTestAllocator(allocs, []))
deallocTypes = CreateTypes(mapper)
del allocs[:]
listPtr = mapper.PyList_New(0)
self.assertEquals(allocs, [(listPtr, Marshal.SizeOf(PyListObject))], "bad alloc")
listStruct = Marshal.PtrToStructure(listPtr, PyListObject)
self.assertEquals(listStruct.ob_refcnt, 1, "bad refcount")
self.assertEquals(listStruct.ob_type, mapper.PyList_Type, "bad type")
self.assertEquals(listStruct.ob_size, 0, "bad ob_size")
self.assertEquals(listStruct.ob_item, IntPtr.Zero, "bad data pointer")
self.assertEquals(listStruct.allocated, 0, "bad allocated")
self.assertEquals(mapper.Retrieve(listPtr), [], "mapped to wrong object")
mapper.Dispose()
deallocTypes()
def test_PyTuple_Resize(self):
allocs = []
mapper = PythonMapper(GetAllocatingTestAllocator(allocs, []))
tuplePtrPtr = Marshal.AllocHGlobal(CPyMarshal.PtrSize)
oldTuplePtr = mapper.PyTuple_New(1)
del allocs[:]
CPyMarshal.WritePtr(tuplePtrPtr, oldTuplePtr)
self.assertEquals(mapper._PyTuple_Resize(tuplePtrPtr, 100), 0)
newTuplePtr = CPyMarshal.ReadPtr(tuplePtrPtr)
expectedSize = Marshal.SizeOf(PyTupleObject) + (CPyMarshal.PtrSize * (99))
self.assertEquals(allocs, [(newTuplePtr, expectedSize)])
tupleStruct = Marshal.PtrToStructure(newTuplePtr, PyTupleObject)
self.assertEquals(tupleStruct.ob_refcnt, 1)
self.assertEquals(tupleStruct.ob_type, mapper.PyTuple_Type)
self.assertEquals(tupleStruct.ob_size, 100)
mapper.Dispose()
Marshal.FreeHGlobal(tuplePtrPtr)
def testFillNotImplemented(self, mapper, _):
niPtr = mapper._Py_NotImplementedStruct
niStruct = Marshal.PtrToStructure(niPtr, PyObject)
self.assertEquals(niStruct.ob_refcnt, 1, "bad refcount")
self.assertEquals(niStruct.ob_type, mapper.PyNotImplemented_Type,
"unexpected type")
def testFillNone(self, mapper, _):
nonePtr = mapper._Py_NoneStruct
noneStruct = Marshal.PtrToStructure(nonePtr, PyObject)
self.assertEquals(noneStruct.ob_refcnt, 1, "bad refcount")
self.assertEquals(noneStruct.ob_type, mapper.PyNone_Type,
"unexpected type")
