SD_BUS_CLOSE(3)                  sd_bus_close                  SD_BUS_CLOSE(3)

NAME
       sd_bus_close, sd_bus_flush, sd_bus_default_flush_close - Close and
       flush a bus connection

SYNOPSIS
       #include <systemd/sd-bus.h>

       void sd_bus_close(sd_bus *bus);

       int sd_bus_flush(sd_bus *bus);

       void sd_bus_default_flush_close(void);

DESCRIPTION
       sd_bus_close() disconnects the specified bus connection. When this call
       is invoked and the specified bus object refers to an active connection
       it is immediately terminated. No further messages may be sent or
       received on it. Any messages queued in the bus object (both incoming
       and outgoing) are released. If invoked on NULL bus object or when the
       bus connection is already closed this function executes no operation.
       This call does not free or unreference the bus object itself. Use
       sd_bus_unref(3) for that.

       sd_bus_flush() synchronously writes out all outgoing queued message on
       a bus connection if there are any. This function call may block if the
       peer is not processing bus messages quickly.

       Before a program exits it is usually a good idea to flush any pending
       messages with sd_bus_flush() and then close connections with
       sd_bus_close() to ensure that no unwritten messages are lost, no
       further messages may be queued and all incoming but unprocessed
       messages are released. After both operations have been done, it is a
       good idea to also drop any remaining references to the bus object so
       that it may be freed. Since these three operations are frequently done
       together a helper call sd_bus_flush_close_unref(3) is provided that
       combines them into one.

       sd_bus_default_flush_close() is similar to sd_bus_flush_close_unref(),
       but does not take a bus pointer argument and instead iterates over any
       of the "default" buses opened by sd_bus_default(3),
       sd_bus_default_user(3), sd_bus_default_system(3), and similar calls.
       sd_bus_default_flush_close() is particularly useful to clean up any
       buses opened using those calls before the program exits.

RETURN VALUE
       On success, sd_bus_flush() returns a non-negative integer. On failure,
       it returns a negative errno-style error code.

   Errors
       Returned errors may indicate the following problems:

       -ECHILD
           The bus connection has been created in a different process.

NOTES
       These APIs are implemented as a shared library, which can be compiled
       and linked to with the libsystemd pkg-config(1) file.

SEE ALSO
       systemd(1), sd-bus(3), sd_bus_unref(3), sd_bus_set_close_on_exit(3)

systemd 252                                                    SD_BUS_CLOSE(3)

Czas wygenerowania: 0.00039 sek.

Created with the man page lookup class by Andrew Collington.
Based on a C man page viewer by Vadim Pavlov
Unicode soft-hyphen fix (as used by RedHat) by Dan Edwards
Some optimisations by Eli Argon
Caching idea and code contribution by James Richardson

Copyright © 2003-2025 Linux.pl
Hosted by Hosting Linux.pl