Lines Matching +full:wait +full:- +full:on +full:- +full:write

1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
4 .. _func-poll:
13 v4l2-poll - Wait for some event on a file descriptor
18 .. code-block:: c
44 On success :c:func:`poll()` returns the number of file descriptors
47 is non-zero). Capture devices set the ``POLLIN`` and ``POLLRDNORM``
50 zero, on failure it returns -1 and the ``errno`` variable is set
73 When use of the :c:func:`write()` function has been negotiated and the
76 it waits until the driver is ready for a non-blocking
77 :c:func:`write()` call.
84 All drivers implementing the :c:func:`read()` or :c:func:`write()`
93 On success, :c:func:`poll()` returns the number structures which have
94 non-zero ``revents`` fields, or zero if the call timed out. On error -1
102     The driver does not support multiple read or write streams and the