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Fix some refcount and userdata issues in the Python wrapper.

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This commit is contained in:
Ghislain MARY 2014-08-25 13:18:44 +02:00
parent 8e21453946
commit 614df3fd3f
1 changed files with 31 additions and 25 deletions
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56
tools/python/apixml2python/linphone.py
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@ -548,8 +548,15 @@ class DeallocMethodDefinition(MethodDefinition):
return "\tpylinphone_trace(1, \"[PYLINPHONE] >>> %s(%p [%p])\", __FUNCTION__, self, native_ptr);\n"
def format_c_function_call(self):
reset_user_data_code = ''
if self.class_['class_name'] != 'Core' and self.class_['class_has_user_data']:
reset_user_data_code += \
"""if (native_ptr != NULL) {{
{function_prefix}set_user_data(native_ptr, NULL);
}}
""".format(function_prefix=self.class_['class_c_function_prefix'])
# Increment the refcount on self to prevent reentrancy in the dealloc method.
native_ptr_dealloc_code = "\tPy_INCREF(self);\n"
native_ptr_dealloc_code = "Py_INCREF(self);\n"
if self.class_['class_refcountable']:
native_ptr_dealloc_code += \
""" if (native_ptr != NULL) {{
@ -563,10 +570,11 @@ class DeallocMethodDefinition(MethodDefinition):
}}
""".format(function_prefix=self.class_['class_c_function_prefix'])
return \
"""{native_ptr_dealloc_code}
""" {reset_user_data_code}
{native_ptr_dealloc_code}
pylinphone_dispatch_messages();
self->ob_type->tp_free(self);
""".format(native_ptr_dealloc_code=native_ptr_dealloc_code)
""".format(reset_user_data_code=reset_user_data_code, native_ptr_dealloc_code=native_ptr_dealloc_code)
def format_return_trace(self):
return "\tpylinphone_trace(-1, \"[PYLINPHONE] <<< %s\", __FUNCTION__);"
@ -689,27 +697,7 @@ class EventCallbackMethodDefinition(MethodDefinition):
return "{common}\n{specific}".format(common=common, specific=specific)
def format_arguments_parsing(self):
body = "\tpygil_state = PyGILState_Ensure();\n"
for xml_method_arg in self.xml_method_args:
arg_name = xml_method_arg.get('name')
arg_type = xml_method_arg.get('type')
arg_complete_type = xml_method_arg.get('completetype')
arg_contained_type = xml_method_arg.get('containedtype')
argument_type = ArgumentType(arg_type, arg_complete_type, arg_contained_type, self.linphone_module)
if argument_type.fmt_str == 'O':
type_class = self.find_class_definition(arg_type)
get_user_data_code = ''
new_from_native_pointer_code = "py{name} = pylinphone_{arg_type}_new_from_native_ptr(&pylinphone_{arg_type}Type, {name});".format(name=arg_name, arg_type=strip_leading_linphone(arg_type))
if type_class is not None and type_class['class_has_user_data']:
get_user_data_function = type_class['class_c_function_prefix'] + "get_user_data"
get_user_data_code = "py{name} = {get_user_data_function}({name});".format(name=arg_name, get_user_data_function=get_user_data_function)
body += \
""" {get_user_data_code}
if (py{name} == NULL) {{
{new_from_native_pointer_code}
}}
""".format(name=arg_name, get_user_data_code=get_user_data_code, new_from_native_pointer_code=new_from_native_pointer_code)
return body
return "\tpygil_state = PyGILState_Ensure();\n"
def format_enter_trace(self):
fmt = '%p'
@ -730,6 +718,8 @@ class EventCallbackMethodDefinition(MethodDefinition):
return "\tpylinphone_trace(1, \"[PYLINPHONE] >>> %s({fmt})\", __FUNCTION__{args});\n".format(fmt=fmt, args=args)
def format_c_function_call(self):
create_python_objects_code = ''
decref_python_objects_code = ''
fmt = 'O'
args = ['pylc']
for xml_method_arg in self.xml_method_args:
@ -743,14 +733,30 @@ class EventCallbackMethodDefinition(MethodDefinition):
args.append('py' + arg_name)
else:
args.append(arg_name)
if argument_type.fmt_str == 'O':
type_class = self.find_class_definition(arg_type)
get_user_data_code = ''
new_from_native_pointer_code = "py{name} = pylinphone_{arg_type}_new_from_native_ptr(&pylinphone_{arg_type}Type, {name});".format(name=arg_name, arg_type=strip_leading_linphone(arg_type))
if type_class is not None and type_class['class_has_user_data']:
get_user_data_function = type_class['class_c_function_prefix'] + "get_user_data"
get_user_data_code = "py{name} = {get_user_data_function}({name});".format(name=arg_name, get_user_data_function=get_user_data_function)
create_python_objects_code += \
""" {get_user_data_code}
if (py{name} == NULL) {{
{new_from_native_pointer_code}
}}
""".format(name=arg_name, get_user_data_code=get_user_data_code, new_from_native_pointer_code=new_from_native_pointer_code)
decref_python_objects_code += "\t\tPy_DECREF(py{name});\n".format(name=arg_name)
args=', '.join(args)
return \
""" if ((func != NULL) && PyCallable_Check(func)) {{
{create_python_objects_code}
if (PyEval_CallObject(func, Py_BuildValue("{fmt}", {args})) == NULL) {{
PyErr_Print();
}}
{decref_python_objects_code}
}}
""".format(fmt=fmt.replace('O', 'N'), args=args)
""".format(fmt=fmt.replace('O', 'N'), args=args, create_python_objects_code=create_python_objects_code, decref_python_objects_code=decref_python_objects_code)
def format_return_trace(self):
return "\tpylinphone_trace(-1, \"[PYLINPHONE] <<< %s\", __FUNCTION__);\n"