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

1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
4 .. _func-select:
13 v4l2-select - Synchronous I/O multiplexing
18 .. code-block:: c
30   The highest-numbered file descriptor in any of the three sets, plus 1.
33   File descriptions to be watched if a read() call won't block.
42   Maximum time to wait.
56 On success :c:func:`select()` returns the total number of bits set in
58 a value of zero. On failure it returns -1 and the ``errno`` variable is
66 When use of the :c:func:`read()` function has been negotiated and the
69 a subsequent :c:func:`read()` call, which also attempts to start
77 non-blocking :c:func:`write()` call.
79 All drivers implementing the :c:func:`read()` or :c:func:`write()`
88 On success, :c:func:`select()` returns the number of descriptors
90 the timeout expired. On error -1 is returned, and the ``errno`` variable
99     The driver does not support multiple read or write streams and the