контролируйте, закрывать ли соединение с шиной во время фазы выхода из цикла событий (Control whether to close the bus connection during the event loop exit phase)
Имя (Name)
sd_bus_set_close_on_exit, sd_bus_get_close_on_exit - Control
whether to close the bus connection during the event loop exit
phase
Синопсис (Synopsis)
#include <systemd/sd-bus.h>
int sd_bus_set_close_on_exit(sd_bus *bus, int b);
int sd_bus_get_close_on_exit(sd_bus *bus);
Описание (Description)
sd_bus_set_close_on_exit() may be used to enable or disable
whether the bus connection is automatically flushed (as in
sd_bus_flush(3)) and closed (as in sd_bus_close(3)) during the
exit phase of the event loop. This logic only applies to bus
connections that are attached to an sd-event(3) event loop, see
sd_bus_attach_event(3). By default this mechanism is enabled and
makes sure that any pending messages that have not been written
to the bus connection are written out when the event loop is
shutting down. In some cases this behaviour is not desirable, for
example when the bus connection shall remain usable until after
the event loop exited. If b is true, the feature is enabled
(which is the default), otherwise disabled.
sd_bus_get_close_on_exit() may be used to query the current
setting of this feature. It returns zero when the feature is
disabled, and positive if enabled.
Возвращаемое значение (Return value)
On success, sd_bus_set_close_on_exit() returns a non-negative
integer. On failure, it returns a negative errno-style error
code.
sd_bus_get_close_on_exit() returns 0 if the feature is currently
disabled or a positive integer if it is enabled. On failure, it
returns a negative errno-style error code.
Errors
Returned errors may indicate the following problems:
-ECHILD
The bus connection was created in a different process.
Примечание (Note)
These APIs are implemented as a shared library, which can be
compiled and linked to with the libsystemd pkg-config(1) file.
Смотри также (See also)
systemd(1), sd-bus(3), sd_bus_flush(3), sd_bus_attach_event(3),
sd-event(3), sd_event_add_exit(3)
