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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO | AUTHORS | COLOPHON |
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IBV_ALLOC_TD(3) Libibverbs Programmer's Manual IBV_ALLOC_TD(3)
ibv_alloc_td(), ibv_dealloc_td() - allocate and deallocate thread
domain object
#include <infiniband/verbs.h>
struct ibv_td *ibv_alloc_td(struct ibv_context *context,
struct ibv_td_init_attr *init_attr);
int ibv_dealloc_td(struct ibv_td *td);
ibv_alloc_td() allocates a thread domain object for the RDMA
device context context.
The thread domain object defines how the verbs libraries and
provider will use locks and additional hardware capabilities to
achieve best performance for handling multi-thread or single-
thread protection. An application assigns verbs resources to a
thread domain when it creates a verbs object.
If the ibv_td object is specified then any objects created under
this thread domain will disable internal locking designed to
protect against concurrent access to that object from multiple
user threads. By default all verbs objects are safe for multi-
threaded access, whether or not a thread domain is specified.
A struct ibv_td can be added to a parent domain via
ibv_alloc_parent_domain() and then the parent domain can be used
to create verbs objects.
ibv_dealloc_td() will deallocate the thread domain td. All
resources created with the td should be destroyed prior to
deallocating the td.
ibv_alloc_td() returns a pointer to the allocated struct ibv_td
object, or NULL if the request fails (and sets errno to indicate
the failure reason).
ibv_dealloc_td() returns 0 on success, or the value of errno on
failure (which indicates the failure reason).
ibv_alloc_parent_domain(3),
Alex Rosenbaum <alexr@mellanox.com>
Yishai Hadas <yishaih@mellanox.com>
This page is part of the rdma-core (RDMA Core Userspace Libraries
and Daemons) project. Information about the project can be found
at ⟨https://github.com/linux-rdma/rdma-core⟩. If you have a bug
report for this manual page, send it to
linux-rdma@vger.kernel.org. This page was obtained from the
project's upstream Git repository
⟨https://github.com/linux-rdma/rdma-core.git⟩ on 2024-06-14. (At
that time, the date of the most recent commit that was found in
the repository was 2024-06-10.) If you discover any rendering
problems in this HTML version of the page, or you believe there
is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
libibverbs 2017-11-06 IBV_ALLOC_TD(3)
Pages that refer to this page: ibv_alloc_parent_domain(3)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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