[PHP EXTENSION] How can I list included files (in PHP script) from RINIT function?

I'm writing my first php extension and I need to list included files (in PHP script) from RINIT function, but I cannot figure out how. I deep into PHP source code and I think it's related to EG(included_files), but I can't to access the list. PHP_RINIT_FUNCTION(extname) { // SAPI NAME AND PHP SCRIPT FILE HANDLE PATH char *pt_var_sapi_name = sapi_module.name; char *pt_var_file_handle_path = SG(request_info).path_translated; // HOW CAN I USE EG(included_files) to get included files list? return SUCCESS; } Thanks!