From f28e6ae98464fab4cbcb5a6d3e00d1ebb66a0c5c Mon Sep 17 00:00:00 2001 From: Luiz Augusto von Dentz Date: Thu, 4 Oct 2012 04:26:33 -0300 Subject: gdbus: Group interface changes to reduce the amount of signals emitted InterfacesAdded and InterfacesRemoved can group all the interfaces changes together in one message. --- gdbus/object.c | 362 +++++++++++++++++++++++++++++++++------------------------ 1 file changed, 208 insertions(+), 154 deletions(-) (limited to 'gdbus') diff --git a/gdbus/object.c b/gdbus/object.c index 214968e8..fef66357 100644 --- a/gdbus/object.c +++ b/gdbus/object.c @@ -45,6 +45,9 @@ struct generic_data { char *path; GSList *interfaces; GSList *objects; + GSList *added; + GSList *removed; + guint process_id; char *introspect; struct generic_data *parent; }; @@ -70,6 +73,8 @@ struct property_data { DBusMessage *message; }; +static gboolean process_changes(gpointer user_data); + static void print_arguments(GString *gstr, const GDBusArgInfo *args, const char *direction) { @@ -491,21 +496,71 @@ static void reset_parent(gpointer data, gpointer user_data) child->parent = parent; } -static void generic_unregister(DBusConnection *connection, void *user_data) +static void append_properties(struct interface_data *data, + DBusMessageIter *iter) { - struct generic_data *data = user_data; + DBusMessageIter dict; + + dbus_message_iter_open_container(iter, DBUS_TYPE_ARRAY, + DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING + DBUS_TYPE_STRING_AS_STRING + DBUS_TYPE_VARIANT_AS_STRING + DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict); + + /* TODO: list properties */ + + dbus_message_iter_close_container(iter, &dict); +} + +static void append_interface(gpointer data, gpointer user_data) +{ + struct interface_data *iface = data; + DBusMessageIter *array = user_data; + DBusMessageIter entry; + + dbus_message_iter_open_container(array, DBUS_TYPE_DICT_ENTRY, NULL, + &entry); + dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &iface->name); + append_properties(data, &entry); + dbus_message_iter_close_container(array, &entry); +} + +static void emit_interfaces_added(struct generic_data *data) +{ + DBusMessage *signal; + DBusMessageIter iter, array; struct generic_data *parent = data->parent; - if (parent != NULL) - parent->objects = g_slist_remove(parent->objects, data); + if (parent == NULL) + return; - g_slist_foreach(data->objects, reset_parent, data->parent); - g_slist_free(data->objects); + signal = dbus_message_new_signal(parent->path, + DBUS_INTERFACE_OBJECT_MANAGER, + "InterfacesAdded"); + if (signal == NULL) + return; - dbus_connection_unref(data->conn); - g_free(data->introspect); - g_free(data->path); - g_free(data); + dbus_message_iter_init_append(signal, &iter); + dbus_message_iter_append_basic(&iter, DBUS_TYPE_OBJECT_PATH, + &data->path); + + dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, + DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING + DBUS_TYPE_STRING_AS_STRING + DBUS_TYPE_ARRAY_AS_STRING + DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING + DBUS_TYPE_STRING_AS_STRING + DBUS_TYPE_VARIANT_AS_STRING + DBUS_DICT_ENTRY_END_CHAR_AS_STRING + DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &array); + + g_slist_foreach(data->added, append_interface, &array); + g_slist_free(data->added); + data->added = NULL; + + dbus_message_iter_close_container(&iter, &array); + + g_dbus_send_message(data->conn, signal); } static struct interface_data *find_interface(GSList *interfaces, @@ -546,45 +601,37 @@ static gboolean g_dbus_args_have_signature(const GDBusArgInfo *args, return TRUE; } -static DBusHandlerResult generic_message(DBusConnection *connection, - DBusMessage *message, void *user_data) +static gboolean remove_interface(struct generic_data *data, const char *name) { - struct generic_data *data = user_data; struct interface_data *iface; - const GDBusMethodTable *method; - const char *interface; - interface = dbus_message_get_interface(message); - - iface = find_interface(data->interfaces, interface); + iface = find_interface(data->interfaces, name); if (iface == NULL) - return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; - - for (method = iface->methods; method && - method->name && method->function; method++) { - if (dbus_message_is_method_call(message, iface->name, - method->name) == FALSE) - continue; + return FALSE; - if (g_dbus_args_have_signature(method->in_args, - message) == FALSE) - continue; + data->interfaces = g_slist_remove(data->interfaces, iface); - if (check_privilege(connection, message, method, - iface->user_data) == TRUE) - return DBUS_HANDLER_RESULT_HANDLED; + if (iface->destroy) { + iface->destroy(iface->user_data); + iface->user_data = NULL; + } - return process_message(connection, message, method, - iface->user_data); + if (data->parent == NULL) { + g_free(iface->name); + g_free(iface); + return TRUE; } - return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; -} + data->removed = g_slist_prepend(data->removed, iface->name); + g_free(iface); -static DBusObjectPathVTable generic_table = { - .unregister_function = generic_unregister, - .message_function = generic_message, -}; + if (data->process_id > 0) + return TRUE; + + data->process_id = g_idle_add(process_changes, data); + + return TRUE; +} static struct generic_data *invalidate_parent_data(DBusConnection *conn, const char *child_path) @@ -636,12 +683,6 @@ done: return data; } -static const GDBusMethodTable introspect_methods[] = { - { GDBUS_METHOD("Introspect", NULL, - GDBUS_ARGS({ "xml", "s" }), introspect) }, - { } -}; - static inline const GDBusPropertyTable *find_property(const GDBusPropertyTable *properties, const char *name) { @@ -860,35 +901,128 @@ static const GDBusSignalTable properties_signals[] = { { } }; -static void append_properties(struct interface_data *data, - DBusMessageIter *iter) +static void append_name(gpointer data, gpointer user_data) { - DBusMessageIter dict; + char *name = data; + DBusMessageIter *iter = user_data; - dbus_message_iter_open_container(iter, DBUS_TYPE_ARRAY, - DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING - DBUS_TYPE_STRING_AS_STRING - DBUS_TYPE_VARIANT_AS_STRING - DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict); + dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &name); +} - /* TODO: list properties */ +static void emit_interfaces_removed(struct generic_data *data) +{ + DBusMessage *signal; + DBusMessageIter iter, array; + struct generic_data *parent = data->parent; - dbus_message_iter_close_container(iter, &dict); + if (parent == NULL) + return; + + signal = dbus_message_new_signal(parent->path, + DBUS_INTERFACE_OBJECT_MANAGER, + "InterfacesRemoved"); + if (signal == NULL) + return; + + dbus_message_iter_init_append(signal, &iter); + dbus_message_iter_append_basic(&iter, DBUS_TYPE_OBJECT_PATH, + &data->path); + dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, + DBUS_TYPE_STRING_AS_STRING, &array); + + g_slist_foreach(data->removed, append_name, &array); + g_slist_free_full(data->removed, g_free); + data->removed = NULL; + + dbus_message_iter_close_container(&iter, &array); + + g_dbus_send_message(data->conn, signal); } -static void append_interface(gpointer data, gpointer user_data) +static gboolean process_changes(gpointer user_data) { - struct interface_data *iface = data; - DBusMessageIter *array = user_data; - DBusMessageIter entry; + struct generic_data *data = user_data; - dbus_message_iter_open_container(array, DBUS_TYPE_DICT_ENTRY, NULL, - &entry); - dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &iface->name); - append_properties(data, &entry); - dbus_message_iter_close_container(array, &entry); + data->process_id = 0; + + if (data->added != NULL) + emit_interfaces_added(data); + + if (data->removed != NULL) + emit_interfaces_removed(data); + + return FALSE; } +static void generic_unregister(DBusConnection *connection, void *user_data) +{ + struct generic_data *data = user_data; + struct generic_data *parent = data->parent; + + if (parent != NULL) + parent->objects = g_slist_remove(parent->objects, data); + + if (data->process_id > 0) { + g_source_remove(data->process_id); + if (data->removed != NULL) + emit_interfaces_removed(data); + } + + g_slist_foreach(data->objects, reset_parent, data->parent); + g_slist_free(data->objects); + + dbus_connection_unref(data->conn); + g_free(data->introspect); + g_free(data->path); + g_free(data); +} + +static DBusHandlerResult generic_message(DBusConnection *connection, + DBusMessage *message, void *user_data) +{ + struct generic_data *data = user_data; + struct interface_data *iface; + const GDBusMethodTable *method; + const char *interface; + + interface = dbus_message_get_interface(message); + + iface = find_interface(data->interfaces, interface); + if (iface == NULL) + return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + + for (method = iface->methods; method && + method->name && method->function; method++) { + if (dbus_message_is_method_call(message, iface->name, + method->name) == FALSE) + continue; + + if (g_dbus_args_have_signature(method->in_args, + message) == FALSE) + continue; + + if (check_privilege(connection, message, method, + iface->user_data) == TRUE) + return DBUS_HANDLER_RESULT_HANDLED; + + return process_message(connection, message, method, + iface->user_data); + } + + return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; +} + +static DBusObjectPathVTable generic_table = { + .unregister_function = generic_unregister, + .message_function = generic_message, +}; + +static const GDBusMethodTable introspect_methods[] = { + { GDBUS_METHOD("Introspect", NULL, + GDBUS_ARGS({ "xml", "s" }), introspect) }, + { } +}; + static void append_interfaces(struct generic_data *data, DBusMessageIter *iter) { DBusMessageIter array; @@ -973,43 +1107,6 @@ static const GDBusSignalTable manager_signals[] = { { } }; -static void emit_interface_added(struct generic_data *data, - struct interface_data *iface) -{ - DBusMessage *signal; - DBusMessageIter iter, array; - struct generic_data *parent = data->parent; - - if (parent == NULL) - return; - - signal = dbus_message_new_signal(parent->path, - DBUS_INTERFACE_OBJECT_MANAGER, - "InterfacesAdded"); - if (signal == NULL) - return; - - dbus_message_iter_init_append(signal, &iter); - dbus_message_iter_append_basic(&iter, DBUS_TYPE_OBJECT_PATH, - &data->path); - - dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, - DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING - DBUS_TYPE_STRING_AS_STRING - DBUS_TYPE_ARRAY_AS_STRING - DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING - DBUS_TYPE_STRING_AS_STRING - DBUS_TYPE_VARIANT_AS_STRING - DBUS_DICT_ENTRY_END_CHAR_AS_STRING - DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &array); - - append_interface(iface, &array); - - dbus_message_iter_close_container(&iter, &array); - - g_dbus_send_message(data->conn, signal); -} - static void add_interface(struct generic_data *data, const char *name, const GDBusMethodTable *methods, @@ -1029,8 +1126,14 @@ static void add_interface(struct generic_data *data, iface->destroy = destroy; data->interfaces = g_slist_append(data->interfaces, iface); + if (data->parent == NULL) + return; + + data->added = g_slist_append(data->added, iface); + if (data->process_id > 0) + return; - emit_interface_added(data, iface); + data->process_id = g_idle_add(process_changes, data); } static struct generic_data *object_path_ref(DBusConnection *connection, @@ -1074,55 +1177,6 @@ static struct generic_data *object_path_ref(DBusConnection *connection, return data; } -static void emit_interface_remove(struct generic_data *data, - struct interface_data *iface) -{ - DBusMessage *signal; - DBusMessageIter iter, array; - struct generic_data *parent = data->parent; - - if (parent == NULL) - return; - - signal = dbus_message_new_signal(parent->path, - DBUS_INTERFACE_OBJECT_MANAGER, - "InterfacesRemoved"); - if (signal == NULL) - return; - - dbus_message_iter_init_append(signal, &iter); - dbus_message_iter_append_basic(&iter, DBUS_TYPE_OBJECT_PATH, - &data->path); - - dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, - DBUS_TYPE_STRING_AS_STRING, &array); - dbus_message_iter_append_basic(&array, DBUS_TYPE_STRING, &iface->name); - dbus_message_iter_close_container(&iter, &array); - - g_dbus_send_message(data->conn, signal); -} - -static gboolean remove_interface(struct generic_data *data, const char *name) -{ - struct interface_data *iface; - - iface = find_interface(data->interfaces, name); - if (iface == NULL) - return FALSE; - - emit_interface_remove(data, iface); - - data->interfaces = g_slist_remove(data->interfaces, iface); - - if (iface->destroy) - iface->destroy(iface->user_data); - - g_free(iface->name); - g_free(iface); - - return TRUE; -} - static void object_path_unref(DBusConnection *connection, const char *path) { struct generic_data *data = NULL; @@ -1143,9 +1197,9 @@ static void object_path_unref(DBusConnection *connection, const char *path) remove_interface(data, DBUS_INTERFACE_PROPERTIES); remove_interface(data, DBUS_INTERFACE_OBJECT_MANAGER); - invalidate_parent_data(connection, path); + invalidate_parent_data(data->conn, data->path); - dbus_connection_unregister_object_path(connection, path); + dbus_connection_unregister_object_path(data->conn, data->path); } static gboolean check_signal(DBusConnection *conn, const char *path, @@ -1270,7 +1324,7 @@ gboolean g_dbus_unregister_interface(DBusConnection *connection, g_free(data->introspect); data->introspect = NULL; - object_path_unref(connection, path); + object_path_unref(connection, data->path); return TRUE; } -- cgit v1.2.3