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   ibv_destroy_cq    ( 3 )

создать или уничтожить очередь завершения (CQ) (create or destroy a completion queue (CQ))

Имя (Name)

ibv_create_cq, ibv_destroy_cq - create or destroy a completion
       queue (CQ)

Синопсис (Synopsis)

#include <infiniband/verbs.h>

struct ibv_cq *ibv_create_cq(struct ibv_context *context, int cqe, void *cq_context, struct ibv_comp_channel *channel, int comp_vector);

int ibv_destroy_cq(struct ibv_cq *cq);


Описание (Description)

ibv_create_cq() creates a completion queue (CQ) with at least cqe
       entries for the RDMA device context context.  The pointer
       cq_context will be used to set user context pointer of the CQ
       structure. The argument channel is optional; if not NULL, the
       completion channel channel will be used to return completion
       events.  The CQ will use the completion vector comp_vector for
       signaling completion events; it must be at least zero and less
       than context->num_comp_vectors.

ibv_destroy_cq() destroys the CQ cq.


Возвращаемое значение (Return value)

ibv_create_cq() returns a pointer to the CQ, or NULL if the
       request fails.

ibv_destroy_cq() returns 0 on success, or the value of errno on failure (which indicates the failure reason).


Примечание (Note)

ibv_create_cq() may create a CQ with size greater than or equal
       to the requested size. Check the cqe attribute in the returned CQ
       for the actual size.

ibv_destroy_cq() fails if any queue pair is still associated with this CQ.


Смотри также (See also)

ibv_resize_cq(3), ibv_req_notify_cq(3), ibv_ack_cq_events(3),
       ibv_create_qp(3)