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dbus: Stop polling every 10 seconds to check whether all clients are still alive.

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Instead, watch for org.freedesktop.DBus.Disconnected signals.
This commit is contained in:
Tanu Kaskinen 2010-04-29 15:06:44 +03:00
parent 71ef5fe7e8
commit 22a8c4485b
1 changed files with 28 additions and 22 deletions
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50
src/modules/dbus/module-dbus-protocol.c
View file

@ -54,8 +54,6 @@ PA_MODULE_LOAD_ONCE(TRUE);
PA_MODULE_AUTHOR("Tanu Kaskinen");
PA_MODULE_VERSION(PACKAGE_VERSION);
#define CLEANUP_INTERVAL 10 /* seconds */
enum server_type {
SERVER_TYPE_LOCAL,
SERVER_TYPE_TCP
@ -76,7 +74,7 @@ struct userdata {
pa_idxset *connections;
pa_time_event *cleanup_event;
pa_defer_event *cleanup_event;
pa_dbus_protocol *dbus_protocol;
pa_dbusiface_core *core_iface;
@ -157,6 +155,23 @@ static dbus_bool_t user_check_cb(DBusConnection *connection, unsigned long uid,
return TRUE;
}
static DBusHandlerResult disconnection_filter_cb(DBusConnection *connection, DBusMessage *message, void *user_data) {
struct connection *c = user_data;
pa_assert(connection);
pa_assert(message);
pa_assert(c);
if (dbus_message_is_signal(message, "org.freedesktop.DBus.Local", "Disconnected")) {
/* The connection died. Now we want to free the connection object, but
* let's wait until this message is fully processed, in case someone
* else is interested in this signal too. */
c->server->userdata->module->core->mainloop->defer_enable(c->server->userdata->cleanup_event, 1);
}
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
}
/* Called by D-Bus when a new client connection is received. */
static void connection_new_cb(DBusServer *dbus_server, DBusConnection *new_connection, void *data) {
struct server *s = data;
@ -195,6 +210,8 @@ static void connection_new_cb(DBusServer *dbus_server, DBusConnection *new_conne
c->client->send_event = client_send_event_cb;
c->client->userdata = c;
pa_assert_se(dbus_connection_add_filter(new_connection, disconnection_filter_cb, c, NULL));
pa_idxset_put(s->userdata->connections, c, NULL);
pa_assert_se(pa_dbus_protocol_register_connection(s->userdata->dbus_protocol, new_connection, c->client) >= 0);
@ -490,33 +507,23 @@ static int get_access_arg(pa_modargs *ma, pa_bool_t *local_access, pa_bool_t *re
return 0;
}
/* Frees dead client connections. Called every CLEANUP_INTERVAL seconds. */
static void cleanup_cb(pa_mainloop_api *a, pa_time_event *e, const struct timeval *tv, void *userdata) {
/* Frees dead client connections. */
static void cleanup_cb(pa_mainloop_api *a, pa_defer_event *e, void *userdata) {
struct userdata *u = userdata;
struct connection *conn = NULL;
uint32_t idx;
struct timeval cleanup_timeval;
unsigned free_count = 0;
for (conn = pa_idxset_first(u->connections, &idx); conn; conn = pa_idxset_next(u->connections, &idx)) {
if (!dbus_connection_get_is_connected(pa_dbus_wrap_connection_get(conn->wrap_conn))) {
PA_IDXSET_FOREACH(conn, u->connections, idx) {
if (!dbus_connection_get_is_connected(pa_dbus_wrap_connection_get(conn->wrap_conn)))
connection_free(conn);
++free_count;
}
}
if (free_count > 0)
pa_log_debug("Freed %u dead D-Bus client connections.", free_count);
pa_gettimeofday(&cleanup_timeval);
cleanup_timeval.tv_sec += CLEANUP_INTERVAL;
u->module->core->mainloop->time_restart(e, &cleanup_timeval);
u->module->core->mainloop->defer_enable(e, 0);
}
int pa__init(pa_module *m) {
struct userdata *u = NULL;
pa_modargs *ma = NULL;
struct timeval cleanup_timeval;
pa_assert(m);
@ -555,9 +562,8 @@ int pa__init(pa_module *m) {
u->connections = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
pa_gettimeofday(&cleanup_timeval);
cleanup_timeval.tv_sec += CLEANUP_INTERVAL;
u->cleanup_event = m->core->mainloop->time_new(m->core->mainloop, &cleanup_timeval, cleanup_cb, u);
u->cleanup_event = m->core->mainloop->defer_new(m->core->mainloop, cleanup_cb, u);
m->core->mainloop->defer_enable(u->cleanup_event, 0);
u->dbus_protocol = pa_dbus_protocol_get(m->core);
u->core_iface = pa_dbusiface_core_new(m->core);
@ -594,7 +600,7 @@ void pa__done(pa_module *m) {
pa_dbusiface_core_free(u->core_iface);
if (u->cleanup_event)
m->core->mainloop->time_free(u->cleanup_event);
m->core->mainloop->defer_free(u->cleanup_event);
if (u->connections)
pa_idxset_free(u->connections, connection_free_cb, NULL);