<citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>
for details. It is recommended to send
this message if the
- <varname>WATCHDOG_USEC=</varname>
- environment variable has been set for
- the service process, in every half the
- time interval that is specified in the
- variable.</para></listitem>
+ <varname>$WATCHDOG_PID</varname>
+ environment variable has been set to
+ the PID of the service process, in
+ every half the time interval that is
+ specified in the
+ <varname>$WATCHDOG_USEC</varname>
+ environment variable. See
+ <citerefentry><refentrytitle>sd_watchdog_enabled</refentrytitle><manvolnum>3</manvolnum></citerefentry>
+ for details.</para></listitem>
</varlistentry>
</variablelist>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd-daemon</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>daemon</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>sd_watchdog_enabled</refentrytitle><manvolnum>3</manvolnum></citerefentry>
</para>
</refsect1>