diff --git a/src/python.c b/src/python.c
index 912c18ae227bbd3d8379130ce1f5942d7af80eea..1a7359cd526a5d9a5e7e725dc77671d88cf6d29d 100644 (file)
--- a/src/python.c
+++ b/src/python.c
@@ -197,7 +197,7 @@ static char reg_flush_doc[] = "register_flush(callback[, data][, name]) -> ident
"The callback function will be called with two or three parameters:\n"
"timeout: Indicates that only data older than 'timeout' seconds is to\n"
" be flushed.\n"
- "id: Specifies which values are to be flushed.\n"
+ "id: Specifies which values are to be flushed. Might be None.\n"
"data: The optional data parameter passed to the register function.\n"
" If the parameter was omitted it will be omitted here, too.";
@@ -222,7 +222,6 @@ static char reg_shutdown_doc[] = "register_shutdown(callback[, data][, name]) ->
static pthread_t main_thread;
static PyOS_sighandler_t python_sigint_handler;
static _Bool do_interactive = 0;
-static int do_interactive = 0;
/* This is our global thread state. Python saves some stuff in thread-local
* storage. So if we allow the interpreter to run in the background
static cpy_callback_t *cpy_init_callbacks;
static cpy_callback_t *cpy_shutdown_callbacks;
+/* Make sure to hold the GIL while modifying these. */
+static int cpy_shutdown_triggered = 0;
+static int cpy_num_callbacks = 0;
+
static void cpy_destroy_user_data(void *data) {
cpy_callback_t *c = data;
free(c->name);
+ CPY_LOCK_THREADS
Py_DECREF(c->callback);
Py_XDECREF(c->data);
free(c);
+ --cpy_num_callbacks;
+ if (!cpy_num_callbacks && cpy_shutdown_triggered) {
+ Py_Finalize();
+ return;
+ }
+ CPY_RELEASE_THREADS
}
/* You must hold the GIL to call this function!
@@ -390,12 +400,11 @@ static int cpy_write_callback(const data_set_t *ds, const value_list_t *value_li
}
dict = PyDict_New(); /* New reference. */
if (value_list->meta) {
- int num;
char **table;
meta_data_t *meta = value_list->meta;
- num = meta_data_toc(meta, &table);
- for (size_t i = 0; i < num; ++i) {
+ int num = meta_data_toc(meta, &table);
+ for (int i = 0; i < num; ++i) {
int type;
char *string;
int64_t si;
@@ -520,7 +529,12 @@ static void cpy_flush_callback(int timeout, const char *id, user_data_t *data) {
PyObject *ret, *text;
CPY_LOCK_THREADS
- text = cpy_string_to_unicode_or_bytes(id);
+ if (id) {
+ text = cpy_string_to_unicode_or_bytes(id);
+ } else {
+ text = Py_None;
+ Py_INCREF(text);
+ }
if (c->data == NULL)
ret = PyObject_CallFunction(c->callback, "iN", timeout, text); /* New reference. */
else
@@ -560,6 +574,7 @@ static PyObject *cpy_register_generic(cpy_callback_t **list_head, PyObject *args
c->callback = callback;
c->data = data;
c->next = *list_head;
+ ++cpy_num_callbacks;
*list_head = c;
Py_XDECREF(mod);
PyMem_Free(name);
@@ -625,7 +640,6 @@ static PyObject *cpy_register_generic_userdata(void *reg, void *handler, PyObjec
char buf[512];
reg_function_t *register_function = (reg_function_t *) reg;
cpy_callback_t *c = NULL;
- user_data_t user_data = { 0 };
char *name = NULL;
PyObject *callback = NULL, *data = NULL;
static char *kwlist[] = {"callback", "data", "name", NULL};
@@ -651,17 +665,19 @@ static PyObject *cpy_register_generic_userdata(void *reg, void *handler, PyObjec
c->data = data;
c->next = NULL;
- user_data.free_func = cpy_destroy_user_data;
- user_data.data = c;
+ user_data_t user_data = {
+ .data = c,
+ .free_func = cpy_destroy_user_data
+ };
register_function(buf, handler, &user_data);
+ ++cpy_num_callbacks;
return cpy_string_to_unicode_or_bytes(buf);
}
static PyObject *cpy_register_read(PyObject *self, PyObject *args, PyObject *kwds) {
char buf[512];
cpy_callback_t *c = NULL;
- user_data_t user_data = { 0 };
double interval = 0;
char *name = NULL;
PyObject *callback = NULL, *data = NULL;
@@ -688,11 +704,14 @@ static PyObject *cpy_register_read(PyObject *self, PyObject *args, PyObject *kwd
c->data = data;
c->next = NULL;
- user_data.free_func = cpy_destroy_user_data;
- user_data.data = c;
+ user_data_t user_data = {
+ .data = c,
+ .free_func = cpy_destroy_user_data
+ };
plugin_register_complex_read(/* group = */ "python", buf,
cpy_read_callback, DOUBLE_TO_CDTIME_T (interval), &user_data);
+ ++cpy_num_callbacks;
return cpy_string_to_unicode_or_bytes(buf);
}
@@ -798,8 +817,8 @@ static PyObject *cpy_unregister_generic(cpy_callback_t **list_head, PyObject *ar
PyErr_Format(PyExc_RuntimeError, "Unable to unregister %s callback '%s'.", desc, name);
return NULL;
}
- /* Yes, this is actually save. To call this function the caller has to
- * hold the GIL. Well, save as long as there is only one GIL anyway ... */
+ /* Yes, this is actually safe. To call this function the caller has to
+ * hold the GIL. Well, safe as long as there is only one GIL anyway ... */
if (prev == NULL)
*list_head = tmp->next;
else
@@ -808,6 +827,15 @@ static PyObject *cpy_unregister_generic(cpy_callback_t **list_head, PyObject *ar
Py_RETURN_NONE;
}
+static void cpy_unregister_list(cpy_callback_t **list_head) {
+ cpy_callback_t *cur, *next;
+ for (cur = *list_head; cur; cur = next) {
+ next = cur->next;
+ cpy_destroy_user_data(cur);
+ }
+ *list_head = NULL;
+}
+
typedef int cpy_unregister_function_t(const char *name);
static PyObject *cpy_unregister_generic_userdata(cpy_unregister_function_t *unreg, PyObject *arg, const char *desc) {
static int cpy_shutdown(void) {
PyObject *ret;
- /* This can happen if the module was loaded but not configured. */
- if (state != NULL)
- PyEval_RestoreThread(state);
+ PyEval_RestoreThread(state);
for (cpy_callback_t *c = cpy_shutdown_callbacks; c; c = c->next) {
ret = PyObject_CallFunctionObjArgs(c->callback, c->data, (void *) 0); /* New reference. */
Py_DECREF(ret);
}
PyErr_Print();
- Py_Finalize();
+
+ cpy_unregister_list(&cpy_config_callbacks);
+ cpy_unregister_list(&cpy_init_callbacks);
+ cpy_unregister_list(&cpy_shutdown_callbacks);
+ cpy_shutdown_triggered = 1;
+
+ if (!cpy_num_callbacks)
+ Py_Finalize();
+
return 0;
}
if (PyImport_ImportModule("readline") == NULL) {
/* This interactive session will suck. */
cpy_log_exception("interactive session init");
- }
+ }
cur_sig = PyOS_setsig(SIGINT, python_sigint_handler);
/* We totally forked just now. Everyone saw that, right? */
PyOS_AfterFork();
if (!Py_IsInitialized()) {
WARNING("python: Plugin loaded but not configured.");
plugin_unregister_shutdown("python");
+ Py_Finalize();
return 0;
}
PyEval_InitThreads();