NAME

io_uring_cq_has_overflow - returns if there are overflow entries waiting to move to the CQ ring

SYNOPSIS

#include <liburing.h>

bool io_uring_cq_has_overflow(const struct io_uring *ring);

DESCRIPTION

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)

NOTES

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.

RETURN VALUE

True if there are CQ entries waiting to be flushed to the CQ ring.

SEE ALSO

io_uring_get_events(3)