Lines Matching full:poll
4 .. _func-poll:
7 V4L2 poll()
13 v4l2-poll - Wait for some event on a file descriptor
20 #include <sys/poll.h>
22 .. c:function:: int poll( struct pollfd *ufds, unsigned int nfds, int timeout )
31 With the :c:func:`poll()` function applications can suspend execution
44 On success :c:func:`poll()` returns the number of file descriptors
52 :ref:`VIDIOC_STREAMON <VIDIOC_STREAMON>` the :c:func:`poll()`
57 :c:func:`poll()` function succeeds and sets the ``POLLERR`` flag in
59 :c:func:`poll()` to succeed as well, but it sets the ``POLLOUT`` and
64 :c:func:`poll()` will return.
67 driver does not capture yet, the :c:func:`poll()` function starts
74 driver does not stream yet, the :c:func:`poll()` function starts
80 the ``events`` field), then :c:func:`poll()` will *not* start
82 just poll for events and not for buffers.
85 function or streaming I/O must also support the :c:func:`poll()`
88 For more details see the :c:func:`poll()` manual page.
93 On success, :c:func:`poll()` returns the number structures which have