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| author | igo95862 <igo95862@yandex.ru> | 2020-11-17 12:47:28 +0300 |
|---|---|---|
| committer | Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> | 2020-12-08 18:08:31 +0100 |
| commit | 2f5c994dde74a5d43686b030fd3b26af3520b2f9 (patch) | |
| tree | cc7c2465dbd9b95a0badee552b90d6a59a72e1dd | |
| parent | 8992d8576bdef0ccfc5d9cd338609307f201a8c5 (diff) | |
| download | systemd-2f5c994dde74a5d43686b030fd3b26af3520b2f9.tar.gz | |
man: Add a paragraph to sd_bus_call explaning callback message lifetime
(cherry picked from commit e6ce785d611702532ae71547e78fbb49eff3aded)
| -rw-r--r-- | man/sd_bus_call.xml | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/man/sd_bus_call.xml b/man/sd_bus_call.xml index b52f65a8d3..2b44f52076 100644 --- a/man/sd_bus_call.xml +++ b/man/sd_bus_call.xml @@ -89,6 +89,12 @@ input parameter; it can be used to propagate errors from the callback handler, it will not receive any error that was received as method reply.)</para> + <para>The message <parameter>m</parameter> passed to the callback is only borrowed, that is, the callback should + not call <citerefentry><refentrytitle>sd_bus_message_unref</refentrytitle><manvolnum>3</manvolnum></citerefentry> + on it. If the callback wants to hold on to the message beyond the lifetime of the callback, it needs to call + <citerefentry><refentrytitle>sd_bus_message_ref</refentrytitle><manvolnum>3</manvolnum></citerefentry> to create a + new reference.</para> + <para>If <parameter>usec</parameter> is zero, the default D-Bus method call timeout is used. See <citerefentry><refentrytitle>sd_bus_get_method_call_timeout</refentrytitle><manvolnum>3</manvolnum></citerefentry>. </para> |