[openib-general] [libibverbs/examples] pingpong tests cleanup (resource destroy + ack events + asprintf failure check)

[Dotan Barak]

Roland Dreier wrote:
> Looks pretty good, but could you please:
>
>  - split off the asprintf() checks into a separate patch ("one idea
>    per patch").
>  - change the code so it keeps a count of cq events and then just
>    does one ibv_ack_cq_events(cq, num_cq_events) at the end.  If
>    people are going to use this code as an example, then we should
>    avoid expensive calls to ibv_ack_cq_events() (which has to do a
>    pthread_mutex_lock()/unlock() and a pthread_cond_signal()) in the
>    main data-moving flow.
>
> thanks...
>   
- i wanted to give one patch with all of the fixes, but separate patches 
are fine by me (i will keep that in mind).
- i will change the code according to this tip (and add it to the man 
pages of this verb)

later on i will send the 2 patches.

thanks
Dotan