C++ PyCallable_Check函数代码示例

static int
Channel_tp_init(Channel *self, PyObject *args, PyObject *kwargs)
{
    int r, flags, tries, ndots, tcp_port, udp_port, optmask, ndomains, socket_send_buffer_size, socket_receive_buffer_size;
    char *lookups;
    char **c_domains;
    double timeout;
    struct ares_options options;
    PyObject *servers, *domains, *sock_state_cb;

    static char *kwlist[] = {"flags", "timeout", "tries", "ndots", "tcp_port", "udp_port",
                             "servers", "domains", "lookups", "sock_state_cb", "socket_send_buffer_size", "socket_receive_buffer_size", NULL};

    optmask = 0;
    flags = tries = ndots = tcp_port = udp_port = socket_send_buffer_size = socket_receive_buffer_size = -1;
    timeout = -1.0;
    lookups = NULL;
    c_domains = NULL;
    servers = domains = sock_state_cb = NULL;

    if (self->channel) {
        PyErr_SetString(PyExc_AresError, "Object already initialized");
        return -1;
    }

    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|idiiiiOOsOii:__init__", kwlist, &flags, &timeout, &tries, &ndots, &tcp_port, &udp_port, &servers,
                                                                                     &domains, &lookups, &sock_state_cb, &socket_send_buffer_size, &socket_receive_buffer_size)) {
        return -1;
    }

    if (sock_state_cb && !PyCallable_Check(sock_state_cb)) {
        PyErr_SetString(PyExc_TypeError, "sock_state_cb is not callable");
        return -1;
    }

    r = ares_library_init(ARES_LIB_INIT_ALL);
    if (r != ARES_SUCCESS) {
        RAISE_ARES_EXCEPTION(r);
        return -1;
    }
    self->lib_initialized = True;

    memset(&options, 0, sizeof(struct ares_options));

    if (flags != -1) {
        options.flags = flags;
        optmask |= ARES_OPT_FLAGS;
    }
    if (timeout != -1) {
        options.timeout = (int)timeout * 1000;
        optmask |= ARES_OPT_TIMEOUTMS;
    }
    if (tries != -1) {
        options.tries = tries;
        optmask |= ARES_OPT_TRIES;
    }
    if (ndots != -1) {
        options.ndots = ndots;
        optmask |= ARES_OPT_NDOTS;
    }
    if (tcp_port != -1) {
        options.tcp_port = tcp_port;
        optmask |= ARES_OPT_TCP_PORT;
    }
    if (udp_port != -1) {
        options.udp_port = udp_port;
        optmask |= ARES_OPT_UDP_PORT;
    }
    if (socket_send_buffer_size != -1) {
        options.socket_send_buffer_size = socket_send_buffer_size;
        optmask |= ARES_OPT_SOCK_SNDBUF;
    }
    if (socket_receive_buffer_size != -1) {
        options.socket_receive_buffer_size = socket_receive_buffer_size;
        optmask |= ARES_OPT_SOCK_RCVBUF;
    }
    if (sock_state_cb) {
        options.sock_state_cb = ares__sock_state_cb;
        options.sock_state_cb_data = (void *)self;
        optmask |= ARES_OPT_SOCK_STATE_CB;
        Py_INCREF(sock_state_cb);
        self->sock_state_cb = sock_state_cb;
    }
    if (lookups) {
        options.lookups = lookups;
        optmask |= ARES_OPT_LOOKUPS;
    }
    if (domains) {
        process_domains(domains, &c_domains, &ndomains);
        if (ndomains == -1) {
            goto error;
        }
        options.domains = c_domains;
        options.ndomains = ndomains;
        optmask |= ARES_OPT_DOMAINS;
    }

    r = ares_init_options(&self->channel, &options, optmask);
    if (r != ARES_SUCCESS) {
        RAISE_ARES_EXCEPTION(r);
//.........这里部分代码省略.........

static PyObject *
DNSResolver_func_getaddrinfo(DNSResolver *self, PyObject *args, PyObject *kwargs)
{
    char *name;
    char port_str[6];
    int port, family, socktype, protocol, flags, r;
    struct addrinfo hints;
    ares_cb_data_t *cb_data = NULL;
    uv_getaddrinfo_t* handle = NULL;
    PyObject *callback;

    static char *kwlist[] = {"callback", "name", "port", "family", "socktype", "protocol", "flags", NULL};

    port = socktype = protocol = flags = 0;
    family = AF_UNSPEC;

    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "sO|iiiii:getaddrinfo", kwlist, &name, &callback, &port, &family, &socktype, &protocol, &flags)) {
        return NULL;
    }

    if (!PyCallable_Check(callback)) {
        PyErr_SetString(PyExc_TypeError, "a callable is required");
        return NULL;
    }

    if (port < 0 || port > 65536) {
        PyErr_SetString(PyExc_ValueError, "port must be between 0 and 65536");
        return NULL;
    }
    snprintf(port_str, sizeof(port_str), "%d", port);

    handle = PyMem_Malloc(sizeof(uv_getaddrinfo_t));
    if (!handle) {
        PyErr_NoMemory();
        goto error;
    }

    cb_data = (ares_cb_data_t*) PyMem_Malloc(sizeof *cb_data);
    if (!cb_data) {
        PyErr_NoMemory();
        goto error;
    }

    Py_INCREF(callback);
    cb_data->resolver = self;
    cb_data->cb = callback;
    handle->data = (void *)cb_data;

    memset(&hints, 0, sizeof(hints));
    hints.ai_family = family;
    hints.ai_socktype = socktype;
    hints.ai_protocol = protocol;
    hints.ai_flags = flags;

    r = uv_getaddrinfo(UV_LOOP(self), handle, &getaddrinfo_cb, name, port_str, &hints);
    if (r != 0) {
        raise_uv_exception(self->loop, PyExc_DNSError);
        goto error;
    }

    Py_RETURN_NONE;

error:
    if (handle) {
        PyMem_Free(handle);
    }
    if (cb_data) {
        Py_DECREF(callback);
        PyMem_Free(cb_data);
    }
    return NULL;
}

int main(int argc, char *argv[])
{
    PyObject *pName, *pModule, *pDict, *pFunc, *pValue, *pArgs;

    if (argc < 5) {
        printf("Usage: exe_name python_source function_name\n");
        return 1;
    }

    /* Initialize the Python Interpreter */
    Py_Initialize();
    PySys_SetArgv(argc, argv);

    /* Build the name object */
    /* Convery C-String to PyString */
    pName = PyString_FromString(argv[1]);

    /* Load the module object */
    pModule = PyImport_Import(pName);

    /* pDict is a borrowed reference */
    /* Equivalent to __dict__ attribute of object */
    pDict = PyModule_GetDict(pModule);

    /* pFunc is also a borrowed reference */
    /* Get value of object with key 'argv[2]' */ 
    /* This is the function we'll execute */
    pFunc = PyDict_GetItemString(pDict, argv[2]);

    /* Prepare a tuple which will contain arguments for our Python function */

    /* Create tuple of size 2 */
    pArgs = PyTuple_New(2);

    /* We set the values at indices as provided by main program arguments */
    PyTuple_SetItem(pArgs, 0, PyInt_FromLong(atoi(argv[3])));
    PyTuple_SetItem(pArgs, 1, PyInt_FromLong(atoi(argv[4])));

    /* First check if the PyObject retrieved is callable */
    if (PyCallable_Check(pFunc)) {
        /* To store return value by the called function */
        PyObject *result;

        /* => PyObject_CallObject(object, arguments) */
        if (result = PyObject_CallObject(pFunc, pArgs)) {
            /* We convery returned PyObject to C's long */
            long resultLong = PyInt_AsLong(result);
            printf("Result is: %ld\n", resultLong);
        }
        else {
            /* Since NULL is returned, and NULL is error */
            printf("Failed\n");
        }
    } 
    else {
        /* What you provided wasnt callable */
        PyErr_Print();
    }

    /* Clean up */
    Py_DECREF(pModule);
    Py_DECREF(pName);
    Py_DECREF(pArgs);

    /* Shutdown Python Interpreter */
    Py_Finalize();

    return 0;
}

/**
 * @name    Callback Handling
 * @brief   Handle a callback coming from GPI
 * @ingroup python_c_api
 *
 * GILState before calling: Unknown
 *
 * GILState after calling: Unknown
 *
 * Makes one call to TAKE_GIL and one call to DROP_GIL
 *
 * Returns 0 on success or 1 on a failure.
 *
 * Handles a callback from the simulator, all of which call this function.
 *
 * We extract the associated context and find the Python function (usually
 * cocotb.scheduler.react) calling it with a reference to the trigger that
 * fired. The scheduler can then call next() on all the coroutines that
 * are waiting on that particular trigger.
 *
 * TODO:
 *  - Tidy up return values
 *  - Ensure cleanup correctly in exception cases
 *
 */
int handle_gpi_callback(void *user_data)
{
    int ret = 0;
    to_python();
    p_callback_data callback_data_p = (p_callback_data)user_data;

    if (callback_data_p->id_value != COCOTB_ACTIVE_ID) {
        fprintf(stderr, "Userdata corrupted!\n");
        ret = 1;
        goto err;
    }
    callback_data_p->id_value = COCOTB_INACTIVE_ID;

    /* Cache the sim time */
    gpi_get_sim_time(&cache_time.high, &cache_time.low);

    PyGILState_STATE gstate;
    gstate = TAKE_GIL();

    // Python allowed

    if (!PyCallable_Check(callback_data_p->function)) {
        fprintf(stderr, "Callback fired but function isn't callable?!\n");
        ret = 1;
        goto out;
    }

    // Call the callback
    PyObject *pValue = PyObject_Call(callback_data_p->function, callback_data_p->args, callback_data_p->kwargs);

    // If the return value is NULL a Python exception has occurred
    // The best thing to do here is shutdown as any subsequent
    // calls will go back to python which is now in an unknown state
    if (pValue == NULL)
    {
        fprintf(stderr, "ERROR: called callback function returned NULL\n");
        if (PyErr_Occurred()) {
            fprintf(stderr, "Failed to execute callback due to python exception\n");
            PyErr_Print();
        } else {
            fprintf(stderr, "Failed to execute callback\n");
        }

        gpi_sim_end();
        ret = 0;
        goto out;
    }

    // Free up our mess
    Py_DECREF(pValue);

    // Callbacks may have been re-enabled
    if (callback_data_p->id_value == COCOTB_INACTIVE_ID) {
        Py_DECREF(callback_data_p->function);
        Py_DECREF(callback_data_p->args);

        // Free the callback data
        free(callback_data_p);
    }

out:
    DROP_GIL(gstate);

err:
    to_simulator();
    return ret;
}

//.........这里部分代码省略.........
        if (pp->pyqtprop_parsed_type->metatype() == QMetaType::QObjectStar)
        {
            // However, if the type is a Python sub-class of QObject then we
            // use the name of the Python type.  This anticipates that the type
            // is one that will be proxied by QML at some point.
            if (pp->pyqtprop_parsed_type->typeDef() == sipType_QObject)
            {
                prop_type = ((PyTypeObject *)pp->pyqtprop_parsed_type->py_type())->tp_name;
                prop_type.append('*');
            }
            else
            {
                prop_type = "QObject*";
            }
        }
        else
        {
            prop_type = pp->pyqtprop_parsed_type->name();
        }

        QMetaPropertyBuilder prop_builder = builder.addProperty(prop_name,
                prop_type, notifier_id);

        // Reset the defaults.
        prop_builder.setReadable(false);
        prop_builder.setWritable(false);

        // Enum or flag.
        if (pp->pyqtprop_parsed_type->isEnum() || pp->pyqtprop_parsed_type->isFlag())
        {
            prop_builder.setEnumOrFlag(true);
        }

        if (pp->pyqtprop_get && PyCallable_Check(pp->pyqtprop_get))
        {
            // Readable.
            prop_builder.setReadable(true);
        }

        if (pp->pyqtprop_set && PyCallable_Check(pp->pyqtprop_set))
        {
            // Writable.
            prop_builder.setWritable(true);

            // See if the name of the setter follows the Designer convention.
            // If so tell the UI compilers not to use setProperty().
            PyObject *setter_name_obj = PyObject_GetAttr(pp->pyqtprop_set,
                    qpycore_dunder_name);

            if (setter_name_obj)
            {
                PyObject *ascii_obj = setter_name_obj;
                const char *ascii = sipString_AsASCIIString(&ascii_obj);
                Py_DECREF(setter_name_obj);

                if (ascii)
                {
                    if (qstrlen(ascii) > 3 && ascii[0] == 's' &&
                            ascii[1] == 'e' && ascii[2] == 't' &&
                            ascii[3] == toupper(prop_name[0]) &&
                            qstrcmp(&ascii[4], &prop_name[1]) == 0)
                        prop_builder.setStdCppSet(true);
                }

                Py_DECREF(ascii_obj);
            }

static PyObject *
UDP_func_send(UDP *self, PyObject *args)
{
    int r, dest_port, address_type;
    char *dest_ip;
    uv_buf_t buf;
    Py_buffer pbuf;
    PyObject *callback;
    uv_udp_send_t *wr = NULL;
    udp_send_data_t *req_data = NULL;

    callback = Py_None;

    RAISE_IF_HANDLE_CLOSED(self, PyExc_HandleClosedError, NULL);

    if (!PyArg_ParseTuple(args, "(si)s*|O:send", &dest_ip, &dest_port, &pbuf, &callback)) {
        return NULL;
    }

    if (callback != Py_None && !PyCallable_Check(callback)) {
        PyBuffer_Release(&pbuf);
        PyErr_SetString(PyExc_TypeError, "a callable or None is required");
        return NULL;
    }

    if (dest_port < 0 || dest_port > 65535) {
        PyErr_SetString(PyExc_ValueError, "port must be between 0 and 65535");
        return NULL;
    }

    if (pyuv_guess_ip_family(dest_ip, &address_type)) {
        PyErr_SetString(PyExc_ValueError, "invalid IP address");
        return NULL;
    }

    Py_INCREF(callback);

    wr = (uv_udp_send_t *)PyMem_Malloc(sizeof(uv_udp_send_t));
    if (!wr) {
        PyErr_NoMemory();
        goto error;
    }

    req_data = (udp_send_data_t*) PyMem_Malloc(sizeof(udp_send_data_t));
    if (!req_data) {
        PyErr_NoMemory();
        goto error;
    }

    buf = uv_buf_init(pbuf.buf, pbuf.len);
    req_data->callback = callback;
    req_data->buf_count = 1;
    req_data->data.view = pbuf;

    wr->data = (void *)req_data;

    if (address_type == AF_INET) {
        r = uv_udp_send(wr, (uv_udp_t *)UV_HANDLE(self), &buf, 1, uv_ip4_addr(dest_ip, dest_port), (uv_udp_send_cb)on_udp_send);
    } else {
        r = uv_udp_send6(wr, (uv_udp_t *)UV_HANDLE(self), &buf, 1, uv_ip6_addr(dest_ip, dest_port), (uv_udp_send_cb)on_udp_send);
    }
    if (r != 0) {
        RAISE_UV_EXCEPTION(UV_HANDLE_LOOP(self), PyExc_UDPError);
        goto error;
    }

    Py_RETURN_NONE;

error:
    PyBuffer_Release(&pbuf);
    Py_DECREF(callback);
    if (req_data) {
        PyMem_Free(req_data);
    }
    if (wr) {
        PyMem_Free(wr);
    }
    return NULL;
}

PyObject *pyrna_callback_classmethod_add(PyObject *UNUSED(self), PyObject *args)
{
	void *handle;
	PyObject *cls;
	PyObject *cb_func, *cb_args;
	const char *cb_regiontype_str;
	const char *cb_event_str;
	int cb_event;
	int cb_regiontype;
	StructRNA *srna;

	if (PyTuple_GET_SIZE(args) < 2) {
		PyErr_SetString(PyExc_ValueError, "handler_add(handle): expected at least 2 args");
		return NULL;
	}

	cls = PyTuple_GET_ITEM(args, 0);
	if (!(srna = pyrna_struct_as_srna(cls, false, "handler_add"))) {
		return NULL;
	}
	cb_func = PyTuple_GET_ITEM(args, 1);
	if (!PyCallable_Check(cb_func)) {
		PyErr_SetString(PyExc_TypeError, "first argument isn't callable");
		return NULL;
	}

	/* class specific callbacks */
	if (RNA_struct_is_a(srna, &RNA_Space)) {
		if (!PyArg_ParseTuple(args, "OOO!ss:Space.draw_handler_add",
		                      &cls, &cb_func,  /* already assigned, no matter */
		                      &PyTuple_Type, &cb_args, &cb_regiontype_str, &cb_event_str))
		{
			return NULL;
		}

		if (pyrna_enum_value_from_id(region_draw_mode_items, cb_event_str, &cb_event, "bpy_struct.callback_add()") == -1) {
			return NULL;
		}
		else if (pyrna_enum_value_from_id(region_type_items, cb_regiontype_str, &cb_regiontype, "bpy_struct.callback_add()") == -1) {
			return NULL;
		}
		else {
			const eSpace_Type spaceid = rna_Space_refine_reverse(srna);
			if (spaceid == SPACE_EMPTY) {
				PyErr_Format(PyExc_TypeError, "unknown space type '%.200s'", RNA_struct_identifier(srna));
				return NULL;
			}
			else {
				SpaceType *st = BKE_spacetype_from_id(spaceid);
				ARegionType *art = BKE_regiontype_from_id(st, cb_regiontype);

				handle = ED_region_draw_cb_activate(art, cb_region_draw, (void *)args, cb_event);
				Py_INCREF(args);
			}
		}
	}
	else {
		PyErr_SetString(PyExc_TypeError, "callback_add(): type does not support callbacks");
		return NULL;
	}

	return PyCapsule_New((void *)handle, RNA_CAPSULE_ID, NULL);
}

 virtual void load(const gcore::Path &path, lwc::Registry *reg) {
   
   std::string modulename = path.basename();
   modulename = modulename.substr(0, modulename.length()-3);
   
   gcore::Path dirname = path;
   dirname.pop();
   dirname.makeAbsolute().normalize();
   
   addToSysPath(dirname);
   
   PyObject *pymodname;
   pymodname = PyString_FromString(modulename.c_str());
   PyObject *mod = PyImport_Import(pymodname);
   Py_DECREF(pymodname);
   
   if (!mod) {
     std::cout << "pyloader: Could not load python module" << std::endl;
     PyErr_Print();
     return;
   }
   
   PyObject *getCountFunc = PyObject_GetAttrString(mod, "LWC_ModuleGetTypeCount");
   if (!getCountFunc || !PyCallable_Check(getCountFunc)) {
     if (getCountFunc) {
       Py_DECREF(getCountFunc);
     }
     Py_DECREF(mod);
     return;
   }
   
   PyObject *getNameFunc = PyObject_GetAttrString(mod, "LWC_ModuleGetTypeName");
   if (!getNameFunc || !PyCallable_Check(getNameFunc)) {
     Py_DECREF(getCountFunc);
     if (getNameFunc) {
       Py_DECREF(getNameFunc);
     }
     Py_DECREF(mod);
     return;
   }
   
   PyObject *getClassFunc = PyObject_GetAttrString(mod, "LWC_ModuleGetTypeClass");
   if (!getClassFunc || !PyCallable_Check(getClassFunc)) {
     Py_DECREF(getCountFunc);
     Py_DECREF(getNameFunc);
     if (getClassFunc) {
       Py_DECREF(getClassFunc);
     }
     Py_DECREF(mod);
     return;
   }
   
   PyObject *count = PyObject_CallObject(getCountFunc, NULL);
   long n = PyInt_AsLong(count);
   Py_DECREF(count);
   
   PyObject *args = PyTuple_New(1);
   
   for (long i=0; i<n; ++i) {
     // will this DECREF the old index?
     PyTuple_SetItem(args, 0, PyInt_FromLong(i));
     
     PyObject *pname = PyObject_CallObject(getNameFunc, args);
     PyObject *klass = PyObject_CallObject(getClassFunc, args);
     
     if (!klass) {
       std::cout << "pyloader: No class object for type" << std::endl;
       continue;
     }
     
     char *tn = PyString_AsString(pname);
     
     if (!reg->hasType(tn)) {
       if (mFactory->addType(tn, klass)) {
         registerType(tn, mFactory, reg);
       } else {
         std::cout << "pyloader: Invalid type \"" << tn << "\"" << std::endl;
       }
     } else {
       std::cout << "pyloader: Type \"" << tn << "\" already registered" << std::endl;
     }
     
     Py_DECREF(pname);
     Py_DECREF(klass);
   }
   
   Py_DECREF(args);
   Py_DECREF(getCountFunc);
   Py_DECREF(getNameFunc);
   Py_DECREF(getClassFunc);
   
   mPyModules.push_back(mod);
 }

static int child_init(int rank)
{
    PyObject *pFunc, *pArgs, *pValue, *pResult;
    int rval;
    char *classname;

    PyEval_AcquireLock();
    PyThreadState_Swap(myThreadState);

    // get instance class name
    classname = get_instance_class_name(handler_obj);
    if (classname == NULL)
    {
	if (!PyErr_Occurred())
	    PyErr_Format(PyExc_AttributeError, "'module' instance has no class name");
	python_handle_exception("child_init");
	Py_DECREF(format_exc_obj);
	Py_XDECREF(classname);
	PyThreadState_Swap(NULL);
	PyEval_ReleaseLock();
	return -1;
    }

    pFunc = PyObject_GetAttrString(handler_obj, child_init_mname.s);

    if (pFunc == NULL) {
	python_handle_exception("child_init");
	Py_XDECREF(pFunc);
	Py_DECREF(format_exc_obj);
        PyThreadState_Swap(NULL);
        PyEval_ReleaseLock();
        return -1;
    }

    if (!PyCallable_Check(pFunc)) {
	if (!PyErr_Occurred())
	    PyErr_Format(PyExc_AttributeError, "class object '%s' has is not callable attribute '%s'", !classname ? "None" : classname, mod_init_fname.s);
	python_handle_exception("child_init");
	Py_DECREF(format_exc_obj);
	Py_XDECREF(classname);
	Py_XDECREF(pFunc);
        PyThreadState_Swap(NULL);
        PyEval_ReleaseLock();
        return -1;
    }

    pArgs = PyTuple_New(1);
    if (pArgs == NULL) {
	python_handle_exception("child_init");
	Py_DECREF(format_exc_obj);
	Py_XDECREF(classname);
        Py_DECREF(pFunc);
        PyThreadState_Swap(NULL);
        PyEval_ReleaseLock();
        return -1;
    }

    pValue = PyInt_FromLong((long)rank);
    if (pValue == NULL) {
	python_handle_exception("child_init");
	Py_DECREF(format_exc_obj);
        Py_DECREF(pArgs);
        Py_DECREF(pFunc);
        PyThreadState_Swap(NULL);
        PyEval_ReleaseLock();
        return -1;
    }
    PyTuple_SetItem(pArgs, 0, pValue);
    /* pValue has been stolen */

    pResult = PyObject_CallObject(pFunc, pArgs);
    Py_DECREF(pFunc);
    Py_DECREF(pArgs);

    


    if (PyErr_Occurred()) {
        python_handle_exception("child_init");
	Py_DECREF(format_exc_obj);
        Py_XDECREF(pResult);
        PyThreadState_Swap(NULL);
        PyEval_ReleaseLock();
        return -1;
    }

    if (pResult == NULL) {
        LM_ERR("PyObject_CallObject() returned NULL but no exception!\n");
        PyThreadState_Swap(NULL);
        PyEval_ReleaseLock();
        return -1;
    }

    if (!PyInt_Check(pResult))
    {
	if (!PyErr_Occurred())
	    PyErr_Format(PyExc_TypeError, "method '%s' of class '%s' should return 'int' type", child_init_mname.s, !classname ? "None" : classname);
	python_handle_exception("child_init");
	Py_DECREF(format_exc_obj);
	Py_XDECREF(pResult);
//.........这里部分代码省略.........

static int mod_init(void)
{
    char *dname_src, *bname_src;

    int i;
    PyObject *sys_path, *pDir, *pModule, *pFunc, *pArgs;
    PyThreadState *mainThreadState;

    if (script_name.len == 0) {
        script_name.len = strlen(script_name.s);
    }
    if (mod_init_fname.len == 0) {
        mod_init_fname.len = strlen(mod_init_fname.s);
    }
    if (child_init_mname.len == 0) {
        child_init_mname.len = strlen(child_init_mname.s);
    }

    dname_src = as_asciiz(&script_name);
    bname_src = as_asciiz(&script_name);

    if(dname_src==NULL || bname_src==NULL)
    {
        LM_ERR("no more pkg memory\n");
        return -1;
    }

    dname = strdup(dirname(dname_src));
    if (strlen(dname) == 0)
        dname = ".";
    bname = strdup(basename(bname_src));
    i = strlen(bname);
    if (bname[i - 1] == 'c' || bname[i - 1] == 'o')
        i -= 1;
    if (bname[i - 3] == '.' && bname[i - 2] == 'p' && bname[i - 1] == 'y') {
        bname[i - 3] = '\0';
    } else {
        LM_ERR("%s: script_name doesn't look like a python script\n",
          script_name.s);
        return -1;
    }

    Py_Initialize();
    PyEval_InitThreads();
    mainThreadState = PyThreadState_Get();

    format_exc_obj = InitTracebackModule();

    if (format_exc_obj == NULL || !PyCallable_Check(format_exc_obj))
    {
        Py_XDECREF(format_exc_obj);
        PyEval_ReleaseLock();
        return -1;
    }

    sys_path = PySys_GetObject("path");
    /* PySys_GetObject doesn't pass reference! No need to DEREF */
    if (sys_path == NULL) {
	if (!PyErr_Occurred())
	    PyErr_Format(PyExc_AttributeError, "'module' object 'sys' has no attribute 'path'");
	python_handle_exception("mod_init");
	Py_DECREF(format_exc_obj);
        PyEval_ReleaseLock();
        return -1;
    }

    pDir = PyString_FromString(dname);
    if (pDir == NULL) {
	if (!PyErr_Occurred())
	    PyErr_Format(PyExc_AttributeError, "PyString_FromString() has failed");
	python_handle_exception("mod_init");
	Py_DECREF(format_exc_obj);
        PyEval_ReleaseLock();
        return -1;
    }

    PyList_Insert(sys_path, 0, pDir);
    Py_DECREF(pDir);

    if (init_modules() != 0) {
	if (!PyErr_Occurred())
	    PyErr_SetString(PyExc_AttributeError, "init_modules() has failed");
	python_handle_exception("mod_init");
	Py_DECREF(format_exc_obj);
        PyEval_ReleaseLock();
        return -1;
    }

    if (python_msgobj_init() != 0) {
	if (!PyErr_Occurred())
	    PyErr_SetString(PyExc_AttributeError, "python_msgobj_init() has failed");
	python_handle_exception("mod_init");
	Py_DECREF(format_exc_obj);
        PyEval_ReleaseLock();
        return -1;
    }

    pModule = PyImport_ImportModule(bname);
    if (pModule == NULL) {
	if (!PyErr_Occurred())
//.........这里部分代码省略.........

static gboolean
_pygi_marshal_from_py_interface_callback (PyGIInvokeState   *state,
                                          PyGICallableCache *callable_cache,
                                          PyGIArgCache      *arg_cache,
                                          PyObject          *py_arg,
                                          GIArgument        *arg,
                                          gpointer          *cleanup_data)
{
    GICallableInfo *callable_info;
    PyGICClosure *closure;
    PyGIArgCache *user_data_cache = NULL;
    PyGIArgCache *destroy_cache = NULL;
    PyGICallbackCache *callback_cache;
    PyObject *py_user_data = NULL;

    callback_cache = (PyGICallbackCache *)arg_cache;

    if (callback_cache->user_data_index > 0) {
        user_data_cache = _pygi_callable_cache_get_arg (callable_cache, callback_cache->user_data_index);
        if (user_data_cache->py_arg_index < state->n_py_in_args) {
            /* py_user_data is a borrowed reference. */
            py_user_data = PyTuple_GetItem (state->py_in_args, user_data_cache->py_arg_index);
            if (!py_user_data)
                return FALSE;
            /* NULL out user_data if it was not supplied and the default arg placeholder
             * was used instead.
             */
            if (py_user_data == _PyGIDefaultArgPlaceholder) {
                py_user_data = NULL;
            } else if (callable_cache->user_data_varargs_index < 0) {
                /* For non-variable length user data, place the user data in a
                 * single item tuple which is concatenated to the callbacks arguments.
                 * This allows callback input arg marshaling to always expect a
                 * tuple for user data. Note the
                 */
                py_user_data = Py_BuildValue("(O)", py_user_data, NULL);
            } else {
                /* increment the ref borrowed from PyTuple_GetItem above */
                Py_INCREF (py_user_data);
            }
        }
    }

    if (py_arg == Py_None) {
        return TRUE;
    }

    if (!PyCallable_Check (py_arg)) {
        PyErr_Format (PyExc_TypeError,
                      "Callback needs to be a function or method not %s",
                      py_arg->ob_type->tp_name);

        return FALSE;
    }

    callable_info = (GICallableInfo *)callback_cache->interface_info;

    closure = _pygi_make_native_closure (callable_info, callback_cache->scope, py_arg, py_user_data);
    arg->v_pointer = closure->closure;

    /* always decref the user data as _pygi_make_native_closure adds its own ref */
    Py_XDECREF (py_user_data);

    /* The PyGICClosure instance is used as user data passed into the C function.
     * The return trip to python will marshal this back and pull the python user data out.
     */
    if (user_data_cache != NULL) {
        state->args[user_data_cache->c_arg_index].arg_value.v_pointer = closure;
    }

    /* Setup a GDestroyNotify callback if this method supports it along with
     * a user data field. The user data field is a requirement in order
     * free resources and ref counts associated with this arguments closure.
     * In case a user data field is not available, show a warning giving
     * explicit information and setup a dummy notification to avoid a crash
     * later on in _pygi_destroy_notify_callback_closure.
     */
    if (callback_cache->destroy_notify_index > 0) {
        destroy_cache = _pygi_callable_cache_get_arg (callable_cache, callback_cache->destroy_notify_index);
    }

    if (destroy_cache) {
        if (user_data_cache != NULL) {
            state->args[destroy_cache->c_arg_index].arg_value.v_pointer = _pygi_invoke_closure_free;
        } else {
            char *full_name = pygi_callable_cache_get_full_name (callable_cache);
            gchar *msg = g_strdup_printf("Callables passed to %s will leak references because "
                                         "the method does not support a user_data argument. "
                                         "See: https://bugzilla.gnome.org/show_bug.cgi?id=685598",
                                         full_name);
            g_free (full_name);
            if (PyErr_WarnEx(PyExc_RuntimeWarning, msg, 2)) {
                g_free(msg);
                _pygi_invoke_closure_free(closure);
                return FALSE;
            }
            g_free(msg);
            state->args[destroy_cache->c_arg_index].arg_value.v_pointer = _pygi_destroy_notify_dummy;
        }
    }
//.........这里部分代码省略.........

int main(int argc, char *argv[])
{
    Py_Initialize();  
    if(!Py_IsInitialized())   
    {  
        return -1;  
    }  
    
    PyRun_SimpleString("import sys");
    PyRun_SimpleString("sys.path.append('./')");
    PyObject* pName;
    PyObject* pModule;
    PyObject* pDict;
    PyObject* pFunc;
    
    pName = PyString_FromString("call");
    pModule = PyImport_Import(pName);
    if(!pModule)
    {
        printf("can't find call.py");
        getchar();
        return -1;
    }
    
    pDict = PyModule_GetDict(pModule);
    if(!pDict)
    {
        return -1;
    }
    
    {
        pFunc = PyDict_GetItemString(pDict,"test");
        if(!pFunc || !PyCallable_Check(pFunc))
        {
            printf("can't find function [test]");
            getchar();
            return -1;
        }
        
        PyObject_CallObject(pFunc,0);
    }
    
    {
        pFunc = PyDict_GetItemString(pDict,"add");
        if(!pFunc || !PyCallable_Check(pFunc))
        {
            printf("can't find function [test]");
            getchar();
            return -1;
        }
        
        PyObject* args = PyTuple_New(2);
        PyTuple_SetItem(args,0,Py_BuildValue("l",3));
        PyTuple_SetItem(args,1,Py_BuildValue("l",4));
        PyObject *pAdded = PyObject_CallObject(pFunc,args);
        int ret = PyInt_AsLong(pAdded);  
        printf("add value:%d\n",ret);
        Py_DECREF(args);
    }    
    
    Py_DECREF(pName);
    Py_DECREF(pDict);
    Py_DECREF(pModule);
    Py_Finalize();    
    system("PAUSE");
    return 0;
}

static PyObject *
Channel_func_query(Channel *self, PyObject *args)
{
    char *name;
    int query_type;
    PyObject *callback, *ret;

    CHECK_CHANNEL(self);

    if (!PyArg_ParseTuple(args, "etiO:query", "idna", &name, &query_type, &callback)) {
        return NULL;
    }

    if (!PyCallable_Check(callback)) {
        PyErr_SetString(PyExc_TypeError, "a callable is required");
        ret = NULL;
        goto finally;
    }

    Py_INCREF(callback);

    switch (query_type) {
        case T_A:
        {
            ares_query(self->channel, name, C_IN, T_A, &query_a_cb, (void *)callback);
            break;
        }

        case T_AAAA:
        {
            ares_query(self->channel, name, C_IN, T_AAAA, &query_aaaa_cb, (void *)callback);
            break;
        }

        case T_CNAME:
        {
            ares_query(self->channel, name, C_IN, T_CNAME, &query_cname_cb, (void *)callback);
            break;
        }

        case T_MX:
        {
            ares_query(self->channel, name, C_IN, T_MX, &query_mx_cb, (void *)callback);
            break;
        }

        case T_NAPTR:
        {
            ares_query(self->channel, name, C_IN, T_NAPTR, &query_naptr_cb, (void *)callback);
            break;
        }

        case T_NS:
        {
            ares_query(self->channel, name, C_IN, T_NS, &query_ns_cb, (void *)callback);
            break;
        }

        case T_PTR:
        {
            ares_query(self->channel, name, C_IN, T_PTR, &query_ptr_cb, (void *)callback);
            break;
        }

        case T_SOA:
        {
            ares_query(self->channel, name, C_IN, T_SOA, &query_soa_cb, (void *)callback);
            break;
        }

        case T_SRV:
        {
            ares_query(self->channel, name, C_IN, T_SRV, &query_srv_cb, (void *)callback);
            break;
        }

        case T_TXT:
        {
            ares_query(self->channel, name, C_IN, T_TXT, &query_txt_cb, (void *)callback);
            break;
        }

        default:
        {
            Py_DECREF(callback);
            PyErr_SetString(PyExc_ValueError, "invalid query type specified");
            ret = NULL;
            goto finally;
        }
    }
    ret = Py_None;

finally:
    PyMem_Free(name);
    Py_XINCREF(ret);
    return ret;
}

// this code is heavily adapted from the paint license, which is in
// the file paint.license (BSD compatible) included in this
// distribution.  TODO, add license file to MANIFEST.in and CVS
Py::Object _png_module::write_png(const Py::Tuple& args)
{
    args.verify_length(4, 5);

    FILE *fp = NULL;
    bool close_file = false;
    bool close_dup_file = false;
    Py::Object buffer_obj = Py::Object(args[0]);
    PyObject* buffer = buffer_obj.ptr();
    if (!PyObject_CheckReadBuffer(buffer))
    {
        throw Py::TypeError("First argument must be an rgba buffer.");
    }

    const void* pixBufferPtr = NULL;
    Py_ssize_t pixBufferLength = 0;
    if (PyObject_AsReadBuffer(buffer, &pixBufferPtr, &pixBufferLength))
    {
        throw Py::ValueError("Couldn't get data from read buffer.");
    }

    png_byte* pixBuffer = (png_byte*)pixBufferPtr;
    int width = (int)Py::Int(args[1]);
    int height = (int)Py::Int(args[2]);

    if (pixBufferLength < width * height * 4)
    {
        throw Py::ValueError("Buffer and width, height don't seem to match.");
    }

    Py::Object py_fileobj = Py::Object(args[3]);
    PyObject* py_file = NULL;
    if (py_fileobj.isString())
    {
        if ((py_file = npy_PyFile_OpenFile(py_fileobj.ptr(), (char *)"wb")) == NULL) {
            throw Py::Exception();
        }
        close_file = true;
    }
    else
    {
        py_file = py_fileobj.ptr();
    }

    if ((fp = npy_PyFile_Dup(py_file, (char *)"wb")))
    {
        close_dup_file = true;
    }
    else
    {
        PyErr_Clear();
        PyObject* write_method = PyObject_GetAttrString(
                                     py_file, "write");
        if (!(write_method && PyCallable_Check(write_method)))
        {
            Py_XDECREF(write_method);
            throw Py::TypeError(
                "Object does not appear to be a 8-bit string path or "
                "a Python file-like object");
        }
        Py_XDECREF(write_method);
    }

    png_bytep *row_pointers = NULL;
    png_structp png_ptr = NULL;
    png_infop info_ptr = NULL;

    try
    {
        struct png_color_8_struct sig_bit;
        png_uint_32 row;

        row_pointers = new png_bytep[height];
        for (row = 0; row < (png_uint_32)height; ++row)
        {
            row_pointers[row] = pixBuffer + row * width * 4;
        }

        png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
        if (png_ptr == NULL)
        {
            throw Py::RuntimeError("Could not create write struct");
        }

        info_ptr = png_create_info_struct(png_ptr);
        if (info_ptr == NULL)
        {
            throw Py::RuntimeError("Could not create info struct");
        }

        if (setjmp(png_jmpbuf(png_ptr)))
        {
            throw Py::RuntimeError("Error building image");
        }

        if (fp)
        {
//.........这里部分代码省略.........

void PythonTransform::transform(const QByteArray &input, QByteArray &output)
{
    if (input.isEmpty())
        return;

    PyGILState_STATE lgstate;
    lgstate = PyGILState_Ensure();
    if (loadModule()) {
        PyObject * pyInbound = Py_False; // need reference count management

        if (twoWays)
            pyInbound = (wayValue == INBOUND ? Py_True : Py_False );
        Py_INCREF(pyInbound);

        if (PyModule_AddObject(pModule, INBOUND_ATTR_NAME, pyInbound) == -1) { // steal reference
            pythonmgm->checkPyError();
            logError(tr("T_T Could not set the direction value properly:\n%1").arg(pythonmgm->getLastError()),id);
            Py_XDECREF(pyInbound);
        }

        // setting parameters in the python environment
        if (!parameters.isEmpty()) {
            PyObject *paramsdict = PyDict_New();
            if (!pythonmgm->checkPyError()) {
                logError(tr("T_T Error while creating the Python parameter dict:\n%1").arg(pythonmgm->getLastError()), id);
                Py_XDECREF(paramsdict);
                PyGILState_Release(lgstate);
                return;
            }
            // adding parameters to the python list
            QHashIterator<QByteArray, QByteArray> i(parameters);
            while (i.hasNext()) {
                i.next();
                PyObject* paramKey = PyUnicode_FromStringAndSize(i.key(),i.key().size());
                if (!pythonmgm->checkPyError()) {
                    logError(tr("T_T Error while creating Python parameter key:\n%1").arg(pythonmgm->getLastError()), id);
                    Py_XDECREF(paramsdict);
                    PyGILState_Release(lgstate);
                    return;
                }

                PyObject* paramValue = PyUnicode_FromStringAndSize(i.value(),i.value().size());
                if (!pythonmgm->checkPyError()) {
                    logError(tr("T_T Error while creating Python parameter value:\n%1").arg(pythonmgm->getLastError()), id);
                    Py_XDECREF(paramsdict);
                    Py_XDECREF(paramKey);
                    PyGILState_Release(lgstate);
                    return;
                }

                if (PyDict_SetItem(paramsdict,paramKey,paramValue) == -1) { // stealing reference
                    pythonmgm->checkPyError(); // we already know there was an error
                    logError(tr("T_T Error while setting Python parameter pair:\n%1").arg(pythonmgm->getLastError()), id);
                    Py_XDECREF(paramsdict);
                    Py_XDECREF(paramKey);
                    Py_XDECREF(paramValue);
                    PyGILState_Release(lgstate);
                    return;
                }

                // Cleaning the values (references not stolen)
                Py_XDECREF(paramKey);
                Py_XDECREF(paramValue);
            }

            if (PyModule_AddObject(pModule,PARAMS_ATTR_NAME , paramsdict) == -1) { // stolen paramsdict reference
                pythonmgm->checkPyError();
                logError(tr("T_T Could not set the Pip3line_params value properly:\n%1").arg(pythonmgm->getLastError()),id);
            }


        } else {
            Py_INCREF(Py_None);
            if (PyModule_AddObject(pModule,PARAMS_ATTR_NAME , Py_None) == -1) { // stealing reference
                pythonmgm->checkPyError();
                logError(tr("T_T Could not set the Pip3line_params None value properly:\n%1").arg(pythonmgm->getLastError()),id);
                Py_DECREF(Py_None);
            }
        }

        PyObject * pFunc = PyObject_GetAttrString(pModule, MAIN_FUNCTION_NAME);

        if (pythonmgm->checkPyError() && PyCallable_Check(pFunc)) {
            PyObject* pArgs = PyTuple_New(1);

            if (!pythonmgm->checkPyError()) {
                Q_EMIT error(tr("T_T Error while creating the Python argument tuple:\n%1").arg(pythonmgm->getLastError()), id);
                Py_XDECREF(pFunc);
                Py_XDECREF(pArgs);
                PyGILState_Release(lgstate);
                return;
            }

            PyObject* inputPy = PyByteArray_FromStringAndSize(input.data(),input.size());
            if (!pythonmgm->checkPyError()) {
                Q_EMIT error(tr("T_T Error while creating the Python byte array:\n%1").arg(pythonmgm->getLastError()), id);
                Py_XDECREF(pFunc);
                Py_XDECREF(pArgs);
                Py_XDECREF(inputPy);
                PyGILState_Release(lgstate);
//.........这里部分代码省略.........