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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | NOTES | HISTORY | SEE ALSO | COLOPHON |
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SD_EVENT...T_ON_IDLE(3) sd_event_set_exit_on_idle SD_EVENT...T_ON_IDLE(3)
sd_event_set_exit_on_idle, sd_event_get_exit_on_idle - Enable
event loop exit-on-idle support
#include <systemd/sd-event.h>
int sd_event_set_exit_on_idle(sd_event *event, int b);
int sd_event_get_exit_on_idle(sd_event *event);
sd_event_set_exit_on_idle() may be used to enable or disable the
exit-on-idle support in the event loop object specified in the
event parameter. If enabled, the event loop will exit with a zero
exit code there are no more enabled (SD_EVENT_ON,
SD_EVENT_ONESHOT), non-exit, non-post event sources.
sd_event_get_exit_on_idle() may be used to determine whether
exit-on-idle support was previously requested by a call to
sd_event_set_exit_on_idle() with a true b parameter and
successfully enabled.
On success, sd_event_set_exit_on_idle() and
sd_event_get_exit_on_idle() return a non-zero positive integer if
the exit-on-idle support was successfully enabled. They return
zero if the exit-on-idle support was explicitly disabled with a
false b parameter. On failure, they return a negative errno-style
error code.
Errors
Returned errors may indicate the following problems:
-ECHILD
The event loop has been created in a different process,
library or module instance.
-EINVAL
The passed event loop object was invalid.
Functions described here are available as a shared library, which
can be compiled against and linked to with the
libsystemd pkg-config(1) file.
All functions listed here are thread-agnostic and only a single
thread may operate on a given object at any given time. Different
threads may access the same object at different times. Multiple
independent objects may be used from different threads in
parallel.
The code described here uses getenv(3), which is declared to be
not multi-thread-safe. This means that the code calling the
functions described here must not call setenv(3) from a parallel
thread. It is recommended to only do calls to setenv() from an
early phase of the program when no other threads have been
started.
sd_event_set_exit_on_idle() and sd_event_get_exit_on_idle() were
added in version 259.
systemd(1), sd-event(3), sd_event_new(3), sd_event_add_io(3),
sd_event_add_time(3), sd_event_add_signal(3),
sd_event_add_child(3), sd_event_add_inotify(3),
sd_event_add_defer(3), systemd.service(5)
This page is part of the systemd (systemd system and service
manager) project. Information about the project can be found at
⟨http://www.freedesktop.org/wiki/Software/systemd⟩. If you have a
bug report for this manual page, see
⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩.
This page was obtained from the project's upstream Git repository
⟨https://github.com/systemd/systemd.git⟩ on 2026-08-04. (At that
time, the date of the most recent commit that was found in the
repository was 2026-08-03.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
systemd 262~devel SD_EVENT...T_ON_IDLE(3)
Pages that refer to this page: systemd.directives(7), systemd.index(7)
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HTML rendering created 2026-09-09 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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