dbus_bool_t
_dbus_loop_iterate (DBusLoop *loop,
dbus_bool_t block)
{
#define N_STACK_DESCRIPTORS 64
dbus_bool_t retval;
DBusPollFD *fds;
DBusPollFD stack_fds[N_STACK_DESCRIPTORS];
int n_fds;
WatchCallback **watches_for_fds;
WatchCallback *stack_watches_for_fds[N_STACK_DESCRIPTORS];
int i;
DBusList *link;
int n_ready;
int initial_serial;
long timeout;
dbus_bool_t oom_watch_pending;
int orig_depth;
retval = FALSE;
fds = NULL;
watches_for_fds = NULL;
n_fds = 0;
oom_watch_pending = FALSE;
orig_depth = loop->depth;
#if MAINLOOP_SPEW
_dbus_verbose ("Iteration block=%d depth=%d timeout_count=%d watch_count=%d\n",
block, loop->depth, loop->timeout_count, loop->watch_count);
#endif
if (loop->callbacks == NULL)
goto next_iteration;
if (loop->watch_count > N_STACK_DESCRIPTORS)
{
fds = dbus_new0 (DBusPollFD, loop->watch_count);
while (fds == NULL)
{
_dbus_wait_for_memory ();
fds = dbus_new0 (DBusPollFD, loop->watch_count);
}
watches_for_fds = dbus_new (WatchCallback*, loop->watch_count);
while (watches_for_fds == NULL)
{
_dbus_wait_for_memory ();
watches_for_fds = dbus_new (WatchCallback*, loop->watch_count);
}
}
dbus_bool_t
bus_connection_dispatch_one_message (DBusConnection *connection)
{
DBusDispatchStatus status;
while ((status = dbus_connection_dispatch (connection)) == DBUS_DISPATCH_NEED_MEMORY)
_dbus_wait_for_memory ();
return status == DBUS_DISPATCH_DATA_REMAINS;
}
static void
dispatch_status_function (DBusConnection *connection,
DBusDispatchStatus new_status,
void *data)
{
DBusLoop *loop = data;
if (new_status != DBUS_DISPATCH_COMPLETE)
{
while (!_dbus_loop_queue_dispatch (loop, connection))
_dbus_wait_for_memory ();
}
}
dbus_bool_t
_dbus_loop_dispatch (DBusLoop *loop)
{
#if MAINLOOP_SPEW
_dbus_verbose (" %d connections to dispatch\n", _dbus_list_get_length (&loop->need_dispatch));
#endif
if (loop->need_dispatch == NULL)
return FALSE;
next:
while (loop->need_dispatch != NULL)
{
DBusConnection *connection = _dbus_list_pop_first (&loop->need_dispatch);
while (TRUE)
{
DBusDispatchStatus status;
status = dbus_connection_dispatch (connection);
if (status == DBUS_DISPATCH_COMPLETE)
{
dbus_connection_unref (connection);
goto next;
}
else
{
if (status == DBUS_DISPATCH_NEED_MEMORY)
_dbus_wait_for_memory ();
}
}
}
return TRUE;
}
static dbus_bool_t
handle_reload_watch (DBusWatch *watch,
unsigned int flags,
void *data)
{
DBusError error;
DBusString str;
while (!_dbus_string_init (&str))
_dbus_wait_for_memory ();
if ((reload_pipe[RELOAD_READ_END] > 0) &&
_dbus_read_socket (reload_pipe[RELOAD_READ_END], &str, 1) != 1)
{
_dbus_warn ("Couldn't read from reload pipe.\n");
close_reload_pipe ();
return TRUE;
}
_dbus_string_free (&str);
/* this can only fail if we don't understand the config file
* or OOM. Either way we should just stick with the currently
* loaded config.
*/
dbus_error_init (&error);
if (! bus_context_reload_config (context, &error))
{
_DBUS_ASSERT_ERROR_IS_SET (&error);
_dbus_assert (dbus_error_has_name (&error, DBUS_ERROR_FAILED) ||
dbus_error_has_name (&error, DBUS_ERROR_NO_MEMORY));
_dbus_warn ("Unable to reload configuration: %s\n",
error.message);
dbus_error_free (&error);
}
return TRUE;
}
static dbus_bool_t
handle_reload_watch (DBusWatch *watch,
unsigned int flags,
void *data)
{
DBusError error;
DBusString str;
char *action_str;
char action = '\0';
while (!_dbus_string_init (&str))
_dbus_wait_for_memory ();
if ((reload_pipe[RELOAD_READ_END] > 0) &&
_dbus_read_socket (reload_pipe[RELOAD_READ_END], &str, 1) != 1)
{
_dbus_warn ("Couldn't read from reload pipe.\n");
close_reload_pipe (&watch);
return TRUE;
}
action_str = _dbus_string_get_data (&str);
if (action_str != NULL)
{
action = action_str[0];
}
_dbus_string_free (&str);
/* this can only fail if we don't understand the config file
* or OOM. Either way we should just stick with the currently
* loaded config.
*/
dbus_error_init (&error);
switch (action)
{
case ACTION_RELOAD:
if (! bus_context_reload_config (context, &error))
{
_DBUS_ASSERT_ERROR_IS_SET (&error);
_dbus_assert (dbus_error_has_name (&error, DBUS_ERROR_FAILED) ||
dbus_error_has_name (&error, DBUS_ERROR_NO_MEMORY));
_dbus_warn ("Unable to reload configuration: %s\n",
error.message);
dbus_error_free (&error);
}
break;
case ACTION_QUIT:
{
DBusLoop *loop;
/*
* On OSs without abstract sockets, we want to quit
* gracefully rather than being killed by SIGTERM,
* so that DBusServer gets a chance to clean up the
* sockets from the filesystem. fd.o #38656
*/
loop = bus_context_get_loop (context);
if (loop != NULL)
{
_dbus_loop_quit (loop);
}
}
break;
default:
break;
}
return TRUE;
}
