C++ PyLong_AsVoidPtr函数代码示例

static PyObject *_tkinit(PyObject *self, PyObject *args)
{
    Tcl_Interp *interp;
    TkappObject *app;

    PyObject *arg;
    int is_interp;
    if (!PyArg_ParseTuple(args, "Oi", &arg, &is_interp)) {
        return NULL;
    }

    if (is_interp) {
        interp = (Tcl_Interp *)PyLong_AsVoidPtr(arg);
    } else {
        /* Do it the hard way.  This will break if the TkappObject
           layout changes */
        app = (TkappObject *)PyLong_AsVoidPtr(arg);
        interp = app->interp;
    }

    /* This will bomb if interp is invalid... */

    TCL_CREATE_COMMAND(interp,
                       "PyAggImagePhoto",
                       (Tcl_CmdProc *)PyAggImagePhoto,
                       (ClientData)0,
                       (Tcl_CmdDeleteProc *)NULL);

    Py_INCREF(Py_None);
    return Py_None;
}

static PyObject *
memsys_set_atomic_inc_dec(PyObject *self, PyObject *args) {
    PyObject *addr_inc_obj, *addr_dec_obj;
    void *addr_inc, *addr_dec;
    if (!PyArg_ParseTuple(args, "OO", &addr_inc_obj, &addr_dec_obj)) {
        return NULL;
    }
    addr_inc = PyLong_AsVoidPtr(addr_inc_obj);
    if(PyErr_Occurred()) return NULL;
    addr_dec = PyLong_AsVoidPtr(addr_dec_obj);
    if(PyErr_Occurred()) return NULL;
    NRT_MemSys_set_atomic_inc_dec(addr_inc, addr_dec);
    Py_RETURN_NONE;
}

static int
set_void_ptr(void **vpp, PyObject *o, const char *name)
{
    void *vp = 0;

    if (check_value(o, name)) {
        return -1;
    }
    if (INT_CHECK(o)) {
        vp = PyLong_AsVoidPtr(o);
        if (PyErr_Occurred()) {
            return -1;
        }
    }
    else if (o == Py_None) {
        vp = 0;
    }
    else {
        PyErr_Format(PyExc_TypeError,
                     "property %400s must be a Python integer, not '%400s'",
                     name, Py_TYPE(o)->tp_name);
        return -1;
    }
    *vpp = vp;
    return 0;
}

PyObject *
SharedMemory_attach(SharedMemory *self, PyObject *args, PyObject *keywords) {
    PyObject *py_address = NULL;
    void *address = NULL;
    int flags = 0;
    static char *keyword_list[ ] = {"address", "flags", NULL};

    DPRINTF("Inside SharedMemory_attach()\n");

    if (!PyArg_ParseTupleAndKeywords(args, keywords, "|Oi", keyword_list,
                                     &py_address, &flags))
        goto error_return;

    if ((!py_address) || (py_address == Py_None))
        address = NULL;
    else {
        if (PyLong_Check(py_address))
            address = PyLong_AsVoidPtr(py_address);
        else {
            PyErr_SetString(PyExc_TypeError, "address must be a long");
            goto error_return;
        }
    }

    return shm_attach(self, address, flags);

    error_return:
    return NULL;
}

static PyObject *
PyBlosc_decompress_ptr(PyObject *self, PyObject *args)
{
    PyObject * pointer, * return_int;
    void * input, * output;
    size_t cbytes, nbytes;

    /* require a compressed string and a pointer  */
    if (!PyArg_ParseTuple(args, "s#O:decompress", &input, &cbytes, &pointer))
      return NULL;

    /*  convert the int or long Python object to a void * */
    output = PyLong_AsVoidPtr(pointer);
    if (output == NULL)
      return NULL;

    /*  fetch the uncompressed size into nbytes */
    if (!get_nbytes(input, cbytes, &nbytes))
      return NULL;

    /* do decompression */
    if (!decompress_helper(input, nbytes, output))
      return NULL;

    /*  Return nbytes as python integer. This is legitimate, because
     *  decompress_helper above has checked that the number of bytes written
     *  was indeed nbytes.
     *  */
    return_int = PyLong_FromSize_t(nbytes);
    Py_INCREF(return_int);
    return return_int;
}

/*
 * A convenience function to convert a C/C++ void pointer from a Python object.
 */
void *sip_api_convert_to_void_ptr(PyObject *obj)
{
    if (obj == NULL)
    {
        PyErr_SetString(PyExc_TypeError, "sip.voidptr is NULL");
        return NULL;
    }

    if (obj == Py_None)
        return NULL;

    if (PyObject_TypeCheck(obj, &sipVoidPtr_Type))
        return ((sipVoidPtrObject *)obj)->voidptr;

#if defined(SIP_USE_PYCAPSULE)
    if (PyCapsule_CheckExact(obj))
        return PyCapsule_GetPointer(obj, NULL);
#endif

#if defined(SIP_SUPPORT_PYCOBJECT)
    if (PyCObject_Check(obj))
        return PyCObject_AsVoidPtr(obj);
#endif

    return PyLong_AsVoidPtr(obj);
}

static gboolean
_pygi_marshal_from_py_void (PyGIInvokeState   *state,
                            PyGICallableCache *callable_cache,
                            PyGIArgCache      *arg_cache,
                            PyObject          *py_arg,
                            GIArgument        *arg,
                            gpointer          *cleanup_data)
{
    g_warn_if_fail (arg_cache->transfer == GI_TRANSFER_NOTHING);

    if (py_arg == Py_None) {
        arg->v_pointer = NULL;
    } else if (PYGLIB_CPointer_Check(py_arg)) {
        arg->v_pointer = PYGLIB_CPointer_GetPointer (py_arg, NULL);
    } else if (PYGLIB_PyLong_Check(py_arg) || PyLong_Check(py_arg)) {
        arg->v_pointer = PyLong_AsVoidPtr (py_arg);
    } else {
        PyErr_SetString(PyExc_ValueError,
                        "Pointer arguments are restricted to integers, capsules, and None. "
                        "See: https://bugzilla.gnome.org/show_bug.cgi?id=683599");
        return FALSE;
    }

    *cleanup_data = arg->v_pointer;
    return TRUE;
}

static int
Dispatcher_init(DispatcherObject *self, PyObject *args, PyObject *kwds)
{
    PyObject *tmaddrobj;
    void *tmaddr;
    int argct;
    int can_fallback;
    int has_stararg = 0;
    int exact_match_required = 0;

    if (!PyArg_ParseTuple(args, "OiiO!O!i|ii", &tmaddrobj, &argct,
                          &self->fold_args,
                          &PyTuple_Type, &self->argnames,
                          &PyTuple_Type, &self->defargs,
                          &can_fallback,
                          &has_stararg,
                          &exact_match_required
                         )) {
        return -1;
    }
    Py_INCREF(self->argnames);
    Py_INCREF(self->defargs);
    tmaddr = PyLong_AsVoidPtr(tmaddrobj);
    self->dispatcher = dispatcher_new(tmaddr, argct);
    self->can_compile = 1;
    self->can_fallback = can_fallback;
    self->firstdef = NULL;
    self->fallbackdef = NULL;
    self->interpdef = NULL;
    self->has_stararg = has_stararg;
    self->exact_match_required = exact_match_required;
    return 0;
}

static Tcl_Interp *get_interpreter(PyObject *tkapp) {
    PyObject *interpaddrobj = PyObject_CallMethod(tkapp, "interpaddr", NULL);
    if(interpaddrobj == NULL) { return NULL; }
    void *interpaddr = PyLong_AsVoidPtr(interpaddrobj);
    Py_DECREF(interpaddrobj);
    if(interpaddr == -1) { return NULL; }
    return (Tcl_Interp*)interpaddr;
}

// Get an array of OpenGL fundamental types from a sequence or an object that
// implements a compatible buffer.  Cache the array so that it persists until a
// similar call.
const GLvoid *qpyopengl_value_array_cached(sipErrorState *estate,
        PyObject *values, GLenum gl_type, PyObject *bindings, const char *pkey,
        GLuint skey)
{
    // Handle the trivial byte offset case first.
    PyErr_Clear();

    void *data = PyLong_AsVoidPtr(values);

    if (!PyErr_Occurred())
        return data;

    PyErr_Clear();

    qpyopengl_dataCache *data_cache = get_cache(bindings);

    if (!data_cache)
    {
        *estate = sipErrorFail;
        return 0;
    }

    if (!data_cache->pcache)
        data_cache->pcache = new PrimaryCache;

    // Get an empty wrapper for the array.
    PrimaryCacheEntry *pce = (*data_cache->pcache)[pkey];

    if (!pce)
    {
        pce = new PrimaryCacheEntry;
        data_cache->pcache->insert(pkey, pce);
    }

    Array *array;

    if (skey == 0)
    {
        array = &pce->skey_0;
    }
    else
    {
        if (!pce->skey_n)
            pce->skey_n = new SecondaryCache;

        array = (*pce->skey_n)[skey];

        if (!array)
        {
            array = new Array;
            pce->skey_n->insert(skey, array);
        }
    }

    array->clear();

    return convert_values(array, values, gl_type, estate);
}

static PyObject* send_action_python(PyObject* self, PyObject* args){
	int action;
	PyObject* d;
	if (!PyArg_ParseTuple(args, "Oi", &d,&action))
		return NULL;
	struct ms_control* data;
	data = (struct ms_control*)PyLong_AsVoidPtr(d);
	send_action(data,action);
	return Py_BuildValue("i",0);
}

static PyObject* get_motor_rawValue_python(PyObject* self, PyObject* args){
	int ret,motor,val;
	PyObject* d;
	if (!PyArg_ParseTuple(args, "Oi", &d,&motor))
		return NULL;
	struct ms_control* data;
	data = (struct ms_control*)PyLong_AsVoidPtr(d);
	ret=get_motor_rawValue(data,motor);
	return Py_BuildValue("i", ret);
}

static ach_channel_t *parse_channel_pointer( PyObject *i ) {
    if( PyInt_Check(i) ) {
        return (ach_channel_t*)PyInt_AsLong(i);
    } else if ( PyLong_Check(i) ) {
        return (ach_channel_t*)PyLong_AsVoidPtr(i);
    } else {
        PyErr_SetString( PyExc_TypeError, "invalid channel pointer" );
        return NULL;
    }
}

static PyObject* set_servo_value_python(PyObject* self, PyObject* args){
	int ret,servo,val;
	PyObject* d;
	if (!PyArg_ParseTuple(args, "Oii", &d,&servo,&val))
		return NULL;
	struct ms_control* data;
	data = (struct ms_control*)PyLong_AsVoidPtr(d);
	ret=set_servo_value(data,servo,val);
	return Py_BuildValue("i", ret);
}

PyObject *
read_memory_in(PyObject *self, PyObject *args)
{
    PyObject *address_object;
    if (!PyArg_UnpackTuple(args, "read_memory_in", 1, 1, &address_object))
        return NULL;

    void *address = PyLong_AsVoidPtr(address_object);
    return PyLong_FromUnsignedLong(*((unsigned char *)address));
}