создать или уничтожить канал события завершения (create or destroy a completion event channel)
Имя (Name)
ibv_create_comp_channel, ibv_destroy_comp_channel - create or
destroy a completion event channel
Синопсис (Synopsis)
#include <infiniband/verbs.h>
struct ibv_comp_channel *ibv_create_comp_channel(struct ibv_context
*context);
int ibv_destroy_comp_channel(struct ibv_comp_channel *channel);
Описание (Description)
ibv_create_comp_channel() creates a completion event channel for
the RDMA device context context.
ibv_destroy_comp_channel() destroys the completion event channel
channel.
Возвращаемое значение (Return value)
ibv_create_comp_channel() returns a pointer to the created
completion event channel, or NULL if the request fails.
ibv_destroy_comp_channel() returns 0 on success, or the value of
errno on failure (which indicates the failure reason).
Примечание (Note)
A "completion channel" is an abstraction introduced by libibverbs
that does not exist in the InfiniBand Architecture verbs
specification or RDMA Protocol Verbs Specification. A completion
channel is essentially file descriptor that is used to deliver
completion notifications to a userspace process. When a
completion event is generated for a completion queue (CQ), the
event is delivered via the completion channel attached to that
CQ. This may be useful to steer completion events to different
threads by using multiple completion channels.
ibv_destroy_comp_channel() fails if any CQs are still associated
with the completion event channel being destroyed.
Смотри также (See also)
ibv_open_device(3), ibv_create_cq(3), ibv_get_cq_event(3)
