NAME

       io_uring_buf_ring_cq_advance - advance index of provided buffer and CQ ring

SYNOPSIS

       #include <liburing.h>

       void io_uring_buf_ring_cq_advance(struct io_uring *ring,
                                         struct io_uring_buf_ring *br,
                                         int count);

       void __io_uring_buf_ring_cq_advance(struct io_uring *ring,
                                           struct io_uring_buf_ring *br,
                                           int cq_count,
                                           int buf_count);

DESCRIPTION

       The  io_uring_buf_ring_cq_advance(3)  commits count previously added buffers to the shared
       buffer ring br, making them visible to  the  kernel  and  hence  consumable.  This  passes
       ownership  of the buffer to the ring. At the same time, it advances the CQ ring of ring by
       count amount. This effectively bundles both  a  io_uring_buf_ring_advance(3)  call  and  a
       io_uring_cq_advance(3)  into  one  operation.  Since  updating either ring index entails a
       store memory barrier, doing both at once is more efficient.

       The __io_uring_buf_ring_cq_advance(3) function performs  the  same  operation,  except  it
       splits  the  counts into two separate values. It advances the CQ ring by cq_count entries,
       and the buffer ring by buf_count entries rather than increment both by the same value.

RETURN VALUE

       None

SEE ALSO

       io_uring_register_buf_ring(3), io_uring_buf_ring_add(3), io_uring_buf_ring_advance(3)