void *uwsgi_python_tracebacker_thread(void *foobar) {
struct iovec iov[9];
PyObject *new_thread = uwsgi_python_setup_thread("uWSGITraceBacker");
if (!new_thread) return NULL;
struct sockaddr_un so_sun;
socklen_t so_sun_len = 0;
char *str_wid = uwsgi_num2str(uwsgi.mywid);
char *sock_path = uwsgi_concat2(up.tracebacker, str_wid);
int current_defer_accept = uwsgi.no_defer_accept;
uwsgi.no_defer_accept = 1;
int fd = bind_to_unix(sock_path, uwsgi.listen_queue, uwsgi.chmod_socket, uwsgi.abstract_socket);
uwsgi.no_defer_accept = current_defer_accept;
PyObject *threading_module = PyImport_ImportModule("threading");
if (!threading_module) return NULL;
//PyObject *threading_dict = PyModule_GetDict(threading_module);
PyObject *traceback_module = PyImport_ImportModule("traceback");
if (!traceback_module) return NULL;
PyObject *traceback_dict = PyModule_GetDict(traceback_module);
PyObject *extract_stack = PyDict_GetItemString(traceback_dict, "extract_stack");
PyObject *sys_module = PyImport_ImportModule("sys");
PyObject *sys_dict = PyModule_GetDict(sys_module);
PyObject *_current_frames = PyDict_GetItemString(sys_dict, "_current_frames");
uwsgi_log("python tracebacker for worker %d available on %s\n", uwsgi.mywid, sock_path);
for(;;) {
UWSGI_RELEASE_GIL;
int client_fd = accept(fd, (struct sockaddr *) &so_sun, &so_sun_len);
if (client_fd < 0) {
uwsgi_error("accept()");
UWSGI_GET_GIL;
continue;
}
UWSGI_GET_GIL;
// here is the core of the tracebacker
PyObject *current_frames = PyEval_CallObject(_current_frames, (PyObject *)NULL);
if (!current_frames) goto end;
uwsgi_log("current_frames = %p\n", current_frames);
PyObject *current_frames_items = PyObject_GetAttrString(current_frames, "items");
if (!current_frames_items) goto end;
uwsgi_log("current_frames_items = %p\n", current_frames_items);
PyObject *frames_ret = PyEval_CallObject(current_frames_items, (PyObject *)NULL);
if (!frames_ret) goto end;
uwsgi_log("frames_ret = %p\n", frames_ret);
PyObject *frames_iter = PyObject_GetIter(frames_ret);
uwsgi_log("frames_iter = %p\n", frames_iter);
PyObject *frame = PyIter_Next(frames_iter);
while(frame) {
uwsgi_log("frame = %p\n", frame);
PyObject *stack = PyTuple_GetItem(frame, 1);
uwsgi_log("stack = %p\n", stack);
PyObject *arg_tuple = PyTuple_New(1);
PyTuple_SetItem(arg_tuple, 0, stack);
PyObject *stacktrace = PyEval_CallObject( extract_stack, arg_tuple);
uwsgi_log("stacktrace = %p\n", stacktrace);
PyObject *stacktrace_iter = PyObject_GetIter(stacktrace);
PyObject *st_items = PyIter_Next(stacktrace_iter);
while(st_items) {
uwsgi_log("st_items = %p\n", st_items);
PyObject *st_filename = PyTuple_GetItem(st_items, 0);
PyObject *st_lineno = PyTuple_GetItem(st_items, 1);
PyObject *st_name = PyTuple_GetItem(st_items, 2);
PyObject *st_line = PyTuple_GetItem(st_items, 3);
iov[0].iov_base = "filename = ";
iov[0].iov_len = 11;
iov[1].iov_base = PyString_AsString(st_filename);
iov[1].iov_len = strlen(iov[1].iov_base);
iov[2].iov_base = " lineno = ";
iov[2].iov_len = 10 ;
iov[3].iov_base = uwsgi_num2str(PyInt_AsLong(st_lineno));
iov[3].iov_len = strlen(iov[3].iov_base);
iov[4].iov_base = " function = ";
iov[4].iov_len = 12 ;
iov[5].iov_base = PyString_AsString(st_name);
iov[5].iov_len = strlen(iov[5].iov_base);
iov[6].iov_base = "\n";
iov[6].iov_len = 1 ;
if (st_line) {
}
if (writev(client_fd, iov, 7) < 0) {
uwsgi_error("writev()");
}
st_items = PyIter_Next(stacktrace_iter);
}
frame = PyIter_Next(frames_iter);
}
end:
close(client_fd);
}
return NULL;
}
void *uwsgi_python_autoreloader_thread(void *foobar) {
PyObject *new_thread = uwsgi_python_setup_thread("uWSGIAutoReloader");
if (!new_thread) return NULL;
PyObject *modules = PyImport_GetModuleDict();
if (uwsgi.mywid == 1) {
uwsgi_log("Python auto-reloader enabled\n");
}
PyObject *times_dict = PyDict_New();
char *filename;
for(;;) {
UWSGI_RELEASE_GIL;
sleep(up.auto_reload);
UWSGI_GET_GIL;
// do not start monitoring til the first app is loaded (required for lazy mode)
if (uwsgi_apps_cnt == 0) continue;
#ifdef UWSGI_PYTHON_OLD
int pos = 0;
#else
Py_ssize_t pos = 0;
#endif
PyObject *mod_name, *mod;
while (PyDict_Next(modules, &pos, &mod_name, &mod)) {
int found = 0;
struct uwsgi_string_list *usl = up.auto_reload_ignore;
while(usl) {
if (!strcmp(usl->value, PyString_AsString(mod_name))) {
found = 1;
break;
}
usl = usl->next;
}
if (found) continue;
if (!PyObject_HasAttrString(mod, "__file__")) continue;
PyObject *mod_file = PyObject_GetAttrString(mod, "__file__");
if (!mod_file) continue;
#ifdef PYTHREE
PyObject *zero = PyUnicode_AsUTF8String(mod_file);
char *mod_filename = PyString_AsString(zero);
#else
char *mod_filename = PyString_AsString(mod_file);
#endif
if (!mod_filename) {
#ifdef PYTHREE
Py_DECREF(zero);
#endif
continue;
}
char *ext = strrchr(mod_filename, '.');
if (ext && (!strcmp(ext+1, "pyc") || !strcmp(ext+1, "pyd") || !strcmp(ext+1, "pyo"))) {
filename = uwsgi_concat2n(mod_filename, strlen(mod_filename)-1, "", 0);
}
else {
filename = uwsgi_concat2(mod_filename, "");
}
if (uwsgi_check_python_mtime(times_dict, filename)) {
UWSGI_RELEASE_GIL;
return NULL;
}
free(filename);
#ifdef PYTHREE
Py_DECREF(zero);
#endif
}
}
return NULL;
}
void *uwsgi_python_tracebacker_thread(void *foobar) {
struct iovec iov[11];
PyObject *new_thread = uwsgi_python_setup_thread("uWSGITraceBacker");
if (!new_thread) return NULL;
struct sockaddr_un so_sun;
socklen_t so_sun_len = 0;
char *str_wid = uwsgi_num2str(uwsgi.mywid);
char *sock_path = uwsgi_concat2(up.tracebacker, str_wid);
int current_defer_accept = uwsgi.no_defer_accept;
uwsgi.no_defer_accept = 1;
int fd = bind_to_unix(sock_path, uwsgi.listen_queue, uwsgi.chmod_socket, uwsgi.abstract_socket);
if (fd < 0) {
uwsgi.no_defer_accept = current_defer_accept;
free(str_wid);
free(sock_path);
return NULL;
}
uwsgi.no_defer_accept = current_defer_accept;
PyObject *traceback_module = PyImport_ImportModule("traceback");
if (!traceback_module) {
free(str_wid);
free(sock_path);
close(fd);
return NULL;
}
PyObject *traceback_dict = PyModule_GetDict(traceback_module);
PyObject *extract_stack = PyDict_GetItemString(traceback_dict, "extract_stack");
PyObject *sys_module = PyImport_ImportModule("sys");
PyObject *sys_dict = PyModule_GetDict(sys_module);
PyObject *_current_frames = PyDict_GetItemString(sys_dict, "_current_frames");
uwsgi_log("python tracebacker for worker %d available on %s\n", uwsgi.mywid, sock_path);
for(;;) {
UWSGI_RELEASE_GIL;
int client_fd = accept(fd, (struct sockaddr *) &so_sun, &so_sun_len);
if (client_fd < 0) {
uwsgi_error("accept()");
UWSGI_GET_GIL;
continue;
}
UWSGI_GET_GIL;
// here is the core of the tracebacker
PyObject *current_frames = PyEval_CallObject(_current_frames, (PyObject *)NULL);
if (!current_frames) goto end2;
PyObject *current_frames_items = PyObject_GetAttrString(current_frames, "items");
if (!current_frames_items) goto end;
PyObject *frames_ret = PyEval_CallObject(current_frames_items, (PyObject *)NULL);
if (!frames_ret) goto end3;
PyObject *frames_iter = PyObject_GetIter(frames_ret);
if (!frames_iter) goto end4;
// we have the first frame, lets parse it
if (write(client_fd, "*** uWSGI Python tracebacker output ***\n\n", 41) < 0) {
uwsgi_error("write()");
}
PyObject *frame = PyIter_Next(frames_iter);
while(frame) {
PyObject *thread_id = PyTuple_GetItem(frame, 0);
if (!thread_id) goto next2;
PyObject *stack = PyTuple_GetItem(frame, 1);
if (!stack) goto next2;
PyObject *arg_tuple = PyTuple_New(1);
PyTuple_SetItem(arg_tuple, 0, stack);
Py_INCREF(stack);
PyObject *stacktrace = PyEval_CallObject( extract_stack, arg_tuple);
Py_DECREF(arg_tuple);
if (!stacktrace) goto next2;
PyObject *stacktrace_iter = PyObject_GetIter(stacktrace);
if (!stacktrace_iter) { Py_DECREF(stacktrace); goto next2;}
PyObject *st_items = PyIter_Next(stacktrace_iter);
// we have the first traceback item
while(st_items) {
#ifdef PYTHREE
int thread_name_need_free = 0;
#endif
PyObject *st_filename = PyTuple_GetItem(st_items, 0);
if (!st_filename) { Py_DECREF(st_items); goto next; }
PyObject *st_lineno = PyTuple_GetItem(st_items, 1);
if (!st_lineno) {Py_DECREF(st_items); goto next;}
PyObject *st_name = PyTuple_GetItem(st_items, 2);
if (!st_name) {Py_DECREF(st_items); goto next;}
PyObject *st_line = PyTuple_GetItem(st_items, 3);
iov[0].iov_base = "thread_id = ";
iov[0].iov_len = 12;
iov[1].iov_base = uwsgi_python_get_thread_name(thread_id);
if (!iov[1].iov_base) {
iov[1].iov_base = "<UnnamedPythonThread>";
}
#ifdef PYTHREE
else {
thread_name_need_free = 1;
}
#endif
iov[1].iov_len = strlen(iov[1].iov_base);
iov[2].iov_base = " filename = ";
iov[2].iov_len = 12;
#ifdef PYTHREE
PyObject *st_filename_utf8 = PyUnicode_AsUTF8String(st_filename);
if (!st_filename_utf8) {
if (thread_name_need_free) free(iov[1].iov_base);
goto next;
}
iov[3].iov_base = PyString_AsString(st_filename_utf8);
#else
iov[3].iov_base = PyString_AsString(st_filename);
#endif
iov[3].iov_len = strlen(iov[3].iov_base);
iov[4].iov_base = " lineno = ";
iov[4].iov_len = 10 ;
iov[5].iov_base = uwsgi_num2str(PyInt_AsLong(st_lineno));
iov[5].iov_len = strlen(iov[5].iov_base);
iov[6].iov_base = " function = ";
iov[6].iov_len = 12 ;
#ifdef PYTHREE
PyObject *st_name_utf8 = PyUnicode_AsUTF8String(st_name);
if (!st_name_utf8) {
if (thread_name_need_free) free(iov[1].iov_base);
Py_DECREF(st_filename_utf8);
goto next;
}
iov[7].iov_base = PyString_AsString(st_name_utf8);
#else
iov[7].iov_base = PyString_AsString(st_name);
#endif
iov[7].iov_len = strlen(iov[7].iov_base);
iov[8].iov_base = "";
iov[8].iov_len = 0 ;
iov[9].iov_base = "";
iov[9].iov_len = 0;
iov[10].iov_base = "\n";
iov[10].iov_len = 1;
#ifdef PYTHREE
PyObject *st_line_utf8 = NULL;
#endif
if (st_line) {
iov[8].iov_base = " line = ";
iov[8].iov_len = 8;
#ifdef PYTHREE
PyObject *st_line_utf8 = PyUnicode_AsUTF8String(st_line);
if (!st_line_utf8) {
if (thread_name_need_free) free(iov[1].iov_base);
Py_DECREF(st_filename_utf8);
Py_DECREF(st_name_utf8);
goto next;
}
iov[9].iov_base = PyString_AsString(st_line_utf8);
#else
iov[9].iov_base = PyString_AsString(st_line);
#endif
iov[9].iov_len = strlen(iov[9].iov_base);
}
if (writev(client_fd, iov, 11) < 0) {
uwsgi_error("writev()");
}
// free the line_no
free(iov[5].iov_base);
Py_DECREF(st_items);
#ifdef PYTHREE
Py_DECREF(st_filename_utf8);
Py_DECREF(st_name_utf8);
if (st_line_utf8) {
Py_DECREF(st_line_utf8);
}
if (thread_name_need_free)
free(iov[1].iov_base);
#endif
st_items = PyIter_Next(stacktrace_iter);
}
if (write(client_fd, "\n", 1) < 0) {
uwsgi_error("write()");
}
next:
Py_DECREF(stacktrace_iter);
Py_DECREF(stacktrace);
next2:
Py_DECREF(frame);
frame = PyIter_Next(frames_iter);
}
Py_DECREF(frames_iter);
end4:
Py_DECREF(frames_ret);
end3:
Py_DECREF(current_frames_items);
end:
Py_DECREF(current_frames);
end2:
close(client_fd);
}
return NULL;
}
