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Darren Ng 2021-01-04 09:40:52 +08:00 committed by Luca Boccassi
parent a1de7d01ff
commit 63d9fe0f6d
3 changed files with 3 additions and 3 deletions

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care should be taken to use a division that rounds up to ensure the I/O polling operation care should be taken to use a division that rounds up to ensure the I/O polling operation
doesn't sleep for shorter than necessary, which might result in unintended busy looping doesn't sleep for shorter than necessary, which might result in unintended busy looping
(alternatively, use (alternatively, use
<citerefentry project='man-pages'><refentrytitle>ppoll</refentrytitle><manvolnum>3</manvolnum></citerefentry> <citerefentry project='man-pages'><refentrytitle>ppoll</refentrytitle><manvolnum>2</manvolnum></citerefentry>
instead of plain <function>poll()</function>, which understands timeouts with nano-second instead of plain <function>poll()</function>, which understands timeouts with nano-second
granularity).</para> granularity).</para>

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queued incoming messages are dispatched to registered callbacks. Each time it is invoked a single operation is queued incoming messages are dispatched to registered callbacks. Each time it is invoked a single operation is
executed. It returns zero when no operations were pending and positive if a message was processed. When zero is executed. It returns zero when no operations were pending and positive if a message was processed. When zero is
returned the caller should synchronously poll for I/O events before calling into returned the caller should synchronously poll for I/O events before calling into
<function>sd_bus_process()</function> again. For that either user the simple, synchronous <function>sd_bus_process()</function> again. For that either use the simple, synchronous
<citerefentry><refentrytitle>sd_bus_wait</refentrytitle><manvolnum>3</manvolnum></citerefentry> call, or hook up <citerefentry><refentrytitle>sd_bus_wait</refentrytitle><manvolnum>3</manvolnum></citerefentry> call, or hook up
the bus connection object to an external or manual event loop using the bus connection object to an external or manual event loop using
<citerefentry><refentrytitle>sd_bus_get_fd</refentrytitle><manvolnum>3</manvolnum></citerefentry>. <citerefentry><refentrytitle>sd_bus_get_fd</refentrytitle><manvolnum>3</manvolnum></citerefentry>.

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function is supposed to be called whenever function is supposed to be called whenever
<citerefentry><refentrytitle>sd_bus_process</refentrytitle><manvolnum>3</manvolnum></citerefentry> returns zero, <citerefentry><refentrytitle>sd_bus_process</refentrytitle><manvolnum>3</manvolnum></citerefentry> returns zero,
indicating that no work is pending on the connection. Internally, this call invokes <citerefentry indicating that no work is pending on the connection. Internally, this call invokes <citerefentry
project='man-pages'><refentrytitle>ppoll</refentrytitle><manvolnum>3</manvolnum></citerefentry>, to wait for I/O on project='man-pages'><refentrytitle>ppoll</refentrytitle><manvolnum>2</manvolnum></citerefentry>, to wait for I/O on
the bus connection. If the <parameter>timeout_sec</parameter> parameter is specified, the call will block at most the bus connection. If the <parameter>timeout_sec</parameter> parameter is specified, the call will block at most
for the specified amount of time in µs. Pass <constant>UINT64_MAX</constant> to permit it to sleep for the specified amount of time in µs. Pass <constant>UINT64_MAX</constant> to permit it to sleep
indefinitely.</para> indefinitely.</para>