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NAME | SYNOPSIS | DESCRIPTION | NOTES | RETURN VALUE | SEE ALSO | COLOPHON |
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io_uring_cq_has_overflow(3) liburing Manual io_uring_cq_has_overflow(3)
io_uring_cq_has_overflow - returns if there are overflow entries
waiting to move to the CQ ring
#include <liburing.h>
bool io_uring_cq_has_overflow(const struct io_uring *ring);
The io_uring_cq_has_overflow(3) function informs the application
if CQ entries have overflowed and are waiting to be flushed to
the CQ ring. For example using io_uring_get_events(3)
Using this function is only valid if the ring has
IORING_FEAT_NODROP set, as it's checking for a flag set by
kernels supporting that feature. For really old kernels that
don't support this feature, if CQE overflow is experienced the
CQEs are lost. If that happens, the CQ ring overflow offset will
get incremented.
True if there are CQ entries waiting to be flushed to the CQ
ring.
io_uring_get_events(3)
This page is part of the liburing (A library for io_uring)
project. Information about the project can be found at
⟨https://github.com/axboe/liburing⟩. If you have a bug report for
this manual page, send it to io-uring@vger.kernel.org. This page
was obtained from the project's upstream Git repository
⟨https://github.com/axboe/liburing⟩ on 2024-06-14. (At that
time, the date of the most recent commit that was found in the
repository was 2024-06-03.) If you discover any rendering
problems in this HTML version of the page, or you believe there
is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
liburing-2.3 September 5, 2022io_uring_cq_has_overflow(3)
Pages that refer to this page: io_uring_cq_has_overflow(3), io_uring_get_events(3)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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